feat: region procedure service (#137)

* feat: adds region service and procedure service

* refactor: adds procedure service for ddl and region task

* feat: adds QueryProcedureRequest

* feat: improve ProcedureStateResponse and MigrateRegionRequest

* fix: forgot headers

* fix: remove cluster_id in MigrateRegionRequest

* refactor: rename Procedure to ProcedureService

* chore: rename peer

* fix: forgot java Procedure

build.rs

@@ -39,9 +39,11 @@ fn main() {
                 "proto/greptime/v1/meta/heartbeat.proto",
                 "proto/greptime/v1/meta/route.proto",
                 "proto/greptime/v1/meta/ddl.proto",
+                "proto/greptime/v1/meta/region.proto",
                 "proto/greptime/v1/meta/store.proto",
                 "proto/greptime/v1/meta/lock.proto",
                 "proto/greptime/v1/meta/cluster.proto",
+                "proto/greptime/v1/meta/procedure.proto",
                 "proto/greptime/v1/region/server.proto",
                 "proto/greptime/v1/index/inverted_index.proto",
                 "proto/prometheus/remote/remote.proto",

c++/greptime/v1/meta/common.pb.cc

@@ -150,10 +150,23 @@ struct KeyValueDefaultTypeInternal {
   };
 };
 PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 KeyValueDefaultTypeInternal _KeyValue_default_instance_;
+PROTOBUF_CONSTEXPR ProcedureId::ProcedureId(
+    ::_pbi::ConstantInitialized): _impl_{
+    /*decltype(_impl_.key_)*/{&::_pbi::fixed_address_empty_string, ::_pbi::ConstantInitialized{}}
+  , /*decltype(_impl_._cached_size_)*/{}} {}
+struct ProcedureIdDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR ProcedureIdDefaultTypeInternal()
+      : _instance(::_pbi::ConstantInitialized{}) {}
+  ~ProcedureIdDefaultTypeInternal() {}
+  union {
+    ProcedureId _instance;
+  };
+};
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ProcedureIdDefaultTypeInternal _ProcedureId_default_instance_;
 }  // namespace meta
 }  // namespace v1
 }  // namespace greptime
-static ::_pb::Metadata file_level_metadata_greptime_2fv1_2fmeta_2fcommon_2eproto[9];
+static ::_pb::Metadata file_level_metadata_greptime_2fv1_2fmeta_2fcommon_2eproto[10];
 static const ::_pb::EnumDescriptor* file_level_enum_descriptors_greptime_2fv1_2fmeta_2fcommon_2eproto[1];
 static constexpr ::_pb::ServiceDescriptor const** file_level_service_descriptors_greptime_2fv1_2fmeta_2fcommon_2eproto = nullptr;
 
@@ -236,6 +249,13 @@ const uint32_t TableStruct_greptime_2fv1_2fmeta_2fcommon_2eproto::offsets[] PROT
   ~0u,  // no _inlined_string_donated_
   PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::KeyValue, _impl_.key_),
   PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::KeyValue, _impl_.value_),
+  ~0u,  // no _has_bits_
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::ProcedureId, _internal_metadata_),
+  ~0u,  // no _extensions_
+  ~0u,  // no _oneof_case_
+  ~0u,  // no _weak_field_map_
+  ~0u,  // no _inlined_string_donated_
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::ProcedureId, _impl_.key_),
 };
 static const ::_pbi::MigrationSchema schemas[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
   { 0, 8, -1, sizeof(::greptime::v1::meta::RequestHeader_TracingContextEntry_DoNotUse)},
@@ -247,6 +267,7 @@ static const ::_pbi::MigrationSchema schemas[] PROTOBUF_SECTION_VARIABLE(protode
   { 53, -1, -1, sizeof(::greptime::v1::meta::TableName)},
   { 62, -1, -1, sizeof(::greptime::v1::meta::TimeInterval)},
   { 70, -1, -1, sizeof(::greptime::v1::meta::KeyValue)},
+  { 78, -1, -1, sizeof(::greptime::v1::meta::ProcedureId)},
 };
 
 static const ::_pb::Message* const file_default_instances[] = {
@@ -259,6 +280,7 @@ static const ::_pb::Message* const file_default_instances[] = {
   &::greptime::v1::meta::_TableName_default_instance_._instance,
   &::greptime::v1::meta::_TimeInterval_default_instance_._instance,
   &::greptime::v1::meta::_KeyValue_default_instance_._instance,
+  &::greptime::v1::meta::_ProcedureId_default_instance_._instance,
 };
 
 const char descriptor_table_protodef_greptime_2fv1_2fmeta_2fcommon_2eproto[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) =
@@ -279,16 +301,16 @@ const char descriptor_table_protodef_greptime_2fv1_2fmeta_2fcommon_2eproto[] PRO
   "\022\022\n\ntable_name\030\003 \001(\t\"L\n\014TimeInterval\022\036\n\026"
   "start_timestamp_millis\030\001 \001(\003\022\034\n\024end_time"
   "stamp_millis\030\002 \001(\003\"&\n\010KeyValue\022\013\n\003key\030\001 "
-  "\001(\014\022\r\n\005value\030\002 \001(\014*\"\n\004Role\022\014\n\010DATANODE\020\000"
+  "\001(\014\022\r\n\005value\030\002 \001(\014\"\032\n\013ProcedureId\022\013\n\003key"
-  "\022\014\n\010FRONTEND\020\001B<Z:github.com/GreptimeTea"
+  "\030\001 \001(\014*\"\n\004Role\022\014\n\010DATANODE\020\000\022\014\n\010FRONTEND"
-  "m/greptime-proto/go/greptime/v1/metab\006pr"
+  "\020\001B<Z:github.com/GreptimeTeam/greptime-p"
-  "oto3"
+  "roto/go/greptime/v1/metab\006proto3"
   ;
 static ::_pbi::once_flag descriptor_table_greptime_2fv1_2fmeta_2fcommon_2eproto_once;
 const ::_pbi::DescriptorTable descriptor_table_greptime_2fv1_2fmeta_2fcommon_2eproto = {
-    false, false, 804, descriptor_table_protodef_greptime_2fv1_2fmeta_2fcommon_2eproto,
+    false, false, 832, descriptor_table_protodef_greptime_2fv1_2fmeta_2fcommon_2eproto,
     "greptime/v1/meta/common.proto",
-    &descriptor_table_greptime_2fv1_2fmeta_2fcommon_2eproto_once, nullptr, 0, 9,
+    &descriptor_table_greptime_2fv1_2fmeta_2fcommon_2eproto_once, nullptr, 0, 10,
     schemas, file_default_instances, TableStruct_greptime_2fv1_2fmeta_2fcommon_2eproto::offsets,
     file_level_metadata_greptime_2fv1_2fmeta_2fcommon_2eproto, file_level_enum_descriptors_greptime_2fv1_2fmeta_2fcommon_2eproto,
     file_level_service_descriptors_greptime_2fv1_2fmeta_2fcommon_2eproto,
@@ -2308,6 +2330,204 @@ void KeyValue::InternalSwap(KeyValue* other) {
       file_level_metadata_greptime_2fv1_2fmeta_2fcommon_2eproto[8]);
 }
 
+// ===================================================================
+
+class ProcedureId::_Internal {
+ public:
+};
+
+ProcedureId::ProcedureId(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+                         bool is_message_owned)
+  : ::PROTOBUF_NAMESPACE_ID::Message(arena, is_message_owned) {
+  SharedCtor(arena, is_message_owned);
+  // @@protoc_insertion_point(arena_constructor:greptime.v1.meta.ProcedureId)
+}
+ProcedureId::ProcedureId(const ProcedureId& from)
+  : ::PROTOBUF_NAMESPACE_ID::Message() {
+  ProcedureId* const _this = this; (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.key_){}
+    , /*decltype(_impl_._cached_size_)*/{}};
+
+  _internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
+  _impl_.key_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+    _impl_.key_.Set("", GetArenaForAllocation());
+  #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_key().empty()) {
+    _this->_impl_.key_.Set(from._internal_key(), 
+      _this->GetArenaForAllocation());
+  }
+  // @@protoc_insertion_point(copy_constructor:greptime.v1.meta.ProcedureId)
+}
+
+inline void ProcedureId::SharedCtor(
+    ::_pb::Arena* arena, bool is_message_owned) {
+  (void)arena;
+  (void)is_message_owned;
+  new (&_impl_) Impl_{
+      decltype(_impl_.key_){}
+    , /*decltype(_impl_._cached_size_)*/{}
+  };
+  _impl_.key_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+    _impl_.key_.Set("", GetArenaForAllocation());
+  #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+
+ProcedureId::~ProcedureId() {
+  // @@protoc_insertion_point(destructor:greptime.v1.meta.ProcedureId)
+  if (auto *arena = _internal_metadata_.DeleteReturnArena<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>()) {
+  (void)arena;
+    return;
+  }
+  SharedDtor();
+}
+
+inline void ProcedureId::SharedDtor() {
+  GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.key_.Destroy();
+}
+
+void ProcedureId::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+void ProcedureId::Clear() {
+// @@protoc_insertion_point(message_clear_start:greptime.v1.meta.ProcedureId)
+  uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.key_.ClearToEmpty();
+  _internal_metadata_.Clear<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>();
+}
+
+const char* ProcedureId::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx) {
+#define CHK_(x) if (PROTOBUF_PREDICT_FALSE(!(x))) goto failure
+  while (!ctx->Done(&ptr)) {
+    uint32_t tag;
+    ptr = ::_pbi::ReadTag(ptr, &tag);
+    switch (tag >> 3) {
+      // bytes key = 1;
+      case 1:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 10)) {
+          auto str = _internal_mutable_key();
+          ptr = ::_pbi::InlineGreedyStringParser(str, ptr, ctx);
+          CHK_(ptr);
+        } else
+          goto handle_unusual;
+        continue;
+      default:
+        goto handle_unusual;
+    }  // switch
+  handle_unusual:
+    if ((tag == 0) || ((tag & 7) == 4)) {
+      CHK_(ptr);
+      ctx->SetLastTag(tag);
+      goto message_done;
+    }
+    ptr = UnknownFieldParse(
+        tag,
+        _internal_metadata_.mutable_unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(),
+        ptr, ctx);
+    CHK_(ptr != nullptr);
+  }  // while
+message_done:
+  return ptr;
+failure:
+  ptr = nullptr;
+  goto message_done;
+#undef CHK_
+}
+
+uint8_t* ProcedureId::_InternalSerialize(
+    uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:greptime.v1.meta.ProcedureId)
+  uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  // bytes key = 1;
+  if (!this->_internal_key().empty()) {
+    target = stream->WriteBytesMaybeAliased(
+        1, this->_internal_key(), target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target = ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+        _internal_metadata_.unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(::PROTOBUF_NAMESPACE_ID::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:greptime.v1.meta.ProcedureId)
+  return target;
+}
+
+size_t ProcedureId::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:greptime.v1.meta.ProcedureId)
+  size_t total_size = 0;
+
+  uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // bytes key = 1;
+  if (!this->_internal_key().empty()) {
+    total_size += 1 +
+      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::BytesSize(
+        this->_internal_key());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData ProcedureId::_class_data_ = {
+    ::PROTOBUF_NAMESPACE_ID::Message::CopyWithSourceCheck,
+    ProcedureId::MergeImpl
+};
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*ProcedureId::GetClassData() const { return &_class_data_; }
+
+
+void ProcedureId::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg) {
+  auto* const _this = static_cast<ProcedureId*>(&to_msg);
+  auto& from = static_cast<const ProcedureId&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:greptime.v1.meta.ProcedureId)
+  GOOGLE_DCHECK_NE(&from, _this);
+  uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_key().empty()) {
+    _this->_internal_set_key(from._internal_key());
+  }
+  _this->_internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void ProcedureId::CopyFrom(const ProcedureId& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:greptime.v1.meta.ProcedureId)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool ProcedureId::IsInitialized() const {
+  return true;
+}
+
+void ProcedureId::InternalSwap(ProcedureId* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::InternalSwap(
+      &_impl_.key_, lhs_arena,
+      &other->_impl_.key_, rhs_arena
+  );
+}
+
+::PROTOBUF_NAMESPACE_ID::Metadata ProcedureId::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_greptime_2fv1_2fmeta_2fcommon_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fcommon_2eproto_once,
+      file_level_metadata_greptime_2fv1_2fmeta_2fcommon_2eproto[9]);
+}
+
 // @@protoc_insertion_point(namespace_scope)
 }  // namespace meta
 }  // namespace v1
@@ -2349,6 +2569,10 @@ template<> PROTOBUF_NOINLINE ::greptime::v1::meta::KeyValue*
 Arena::CreateMaybeMessage< ::greptime::v1::meta::KeyValue >(Arena* arena) {
   return Arena::CreateMessageInternal< ::greptime::v1::meta::KeyValue >(arena);
 }
+template<> PROTOBUF_NOINLINE ::greptime::v1::meta::ProcedureId*
+Arena::CreateMaybeMessage< ::greptime::v1::meta::ProcedureId >(Arena* arena) {
+  return Arena::CreateMessageInternal< ::greptime::v1::meta::ProcedureId >(arena);
+}
 PROTOBUF_NAMESPACE_CLOSE
 
 // @@protoc_insertion_point(global_scope)

c++/greptime/v1/meta/common.pb.h

@@ -60,6 +60,9 @@ extern KeyValueDefaultTypeInternal _KeyValue_default_instance_;
 class Peer;
 struct PeerDefaultTypeInternal;
 extern PeerDefaultTypeInternal _Peer_default_instance_;
+class ProcedureId;
+struct ProcedureIdDefaultTypeInternal;
+extern ProcedureIdDefaultTypeInternal _ProcedureId_default_instance_;
 class RequestHeader;
 struct RequestHeaderDefaultTypeInternal;
 extern RequestHeaderDefaultTypeInternal _RequestHeader_default_instance_;
@@ -85,6 +88,7 @@ PROTOBUF_NAMESPACE_OPEN
 template<> ::greptime::v1::meta::Error* Arena::CreateMaybeMessage<::greptime::v1::meta::Error>(Arena*);
 template<> ::greptime::v1::meta::KeyValue* Arena::CreateMaybeMessage<::greptime::v1::meta::KeyValue>(Arena*);
 template<> ::greptime::v1::meta::Peer* Arena::CreateMaybeMessage<::greptime::v1::meta::Peer>(Arena*);
+template<> ::greptime::v1::meta::ProcedureId* Arena::CreateMaybeMessage<::greptime::v1::meta::ProcedureId>(Arena*);
 template<> ::greptime::v1::meta::RequestHeader* Arena::CreateMaybeMessage<::greptime::v1::meta::RequestHeader>(Arena*);
 template<> ::greptime::v1::meta::RequestHeader_TracingContextEntry_DoNotUse* Arena::CreateMaybeMessage<::greptime::v1::meta::RequestHeader_TracingContextEntry_DoNotUse>(Arena*);
 template<> ::greptime::v1::meta::ResponseHeader* Arena::CreateMaybeMessage<::greptime::v1::meta::ResponseHeader>(Arena*);
@@ -1524,6 +1528,159 @@ class KeyValue final :
   union { Impl_ _impl_; };
   friend struct ::TableStruct_greptime_2fv1_2fmeta_2fcommon_2eproto;
 };
+// -------------------------------------------------------------------
+
+class ProcedureId final :
+    public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:greptime.v1.meta.ProcedureId) */ {
+ public:
+  inline ProcedureId() : ProcedureId(nullptr) {}
+  ~ProcedureId() override;
+  explicit PROTOBUF_CONSTEXPR ProcedureId(::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized);
+
+  ProcedureId(const ProcedureId& from);
+  ProcedureId(ProcedureId&& from) noexcept
+    : ProcedureId() {
+    *this = ::std::move(from);
+  }
+
+  inline ProcedureId& operator=(const ProcedureId& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline ProcedureId& operator=(ProcedureId&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const ProcedureId& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const ProcedureId* internal_default_instance() {
+    return reinterpret_cast<const ProcedureId*>(
+               &_ProcedureId_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    9;
+
+  friend void swap(ProcedureId& a, ProcedureId& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(ProcedureId* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::PROTOBUF_NAMESPACE_ID::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(ProcedureId* other) {
+    if (other == this) return;
+    GOOGLE_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  ProcedureId* New(::PROTOBUF_NAMESPACE_ID::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<ProcedureId>(arena);
+  }
+  using ::PROTOBUF_NAMESPACE_ID::Message::CopyFrom;
+  void CopyFrom(const ProcedureId& from);
+  using ::PROTOBUF_NAMESPACE_ID::Message::MergeFrom;
+  void MergeFrom( const ProcedureId& from) {
+    ProcedureId::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::PROTOBUF_NAMESPACE_ID::internal::ParseContext* ctx) final;
+  uint8_t* _InternalSerialize(
+      uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::PROTOBUF_NAMESPACE_ID::Arena* arena, bool is_message_owned);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(ProcedureId* other);
+
+  private:
+  friend class ::PROTOBUF_NAMESPACE_ID::internal::AnyMetadata;
+  static ::PROTOBUF_NAMESPACE_ID::StringPiece FullMessageName() {
+    return "greptime.v1.meta.ProcedureId";
+  }
+  protected:
+  explicit ProcedureId(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+                       bool is_message_owned = false);
+  public:
+
+  static const ClassData _class_data_;
+  const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*GetClassData() const final;
+
+  ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kKeyFieldNumber = 1,
+  };
+  // bytes key = 1;
+  void clear_key();
+  const std::string& key() const;
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_key(ArgT0&& arg0, ArgT... args);
+  std::string* mutable_key();
+  PROTOBUF_NODISCARD std::string* release_key();
+  void set_allocated_key(std::string* key);
+  private:
+  const std::string& _internal_key() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_key(const std::string& value);
+  std::string* _internal_mutable_key();
+  public:
+
+  // @@protoc_insertion_point(class_scope:greptime.v1.meta.ProcedureId)
+ private:
+  class _Internal;
+
+  template <typename T> friend class ::PROTOBUF_NAMESPACE_ID::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr key_;
+    mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_greptime_2fv1_2fmeta_2fcommon_2eproto;
+};
 // ===================================================================
 
 
@@ -2254,6 +2411,60 @@ inline void KeyValue::set_allocated_value(std::string* value) {
   // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.KeyValue.value)
 }
 
+// -------------------------------------------------------------------
+
+// ProcedureId
+
+// bytes key = 1;
+inline void ProcedureId::clear_key() {
+  _impl_.key_.ClearToEmpty();
+}
+inline const std::string& ProcedureId::key() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.meta.ProcedureId.key)
+  return _internal_key();
+}
+template <typename ArgT0, typename... ArgT>
+inline PROTOBUF_ALWAYS_INLINE
+void ProcedureId::set_key(ArgT0&& arg0, ArgT... args) {
+ 
+ _impl_.key_.SetBytes(static_cast<ArgT0 &&>(arg0), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:greptime.v1.meta.ProcedureId.key)
+}
+inline std::string* ProcedureId::mutable_key() {
+  std::string* _s = _internal_mutable_key();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.meta.ProcedureId.key)
+  return _s;
+}
+inline const std::string& ProcedureId::_internal_key() const {
+  return _impl_.key_.Get();
+}
+inline void ProcedureId::_internal_set_key(const std::string& value) {
+  
+  _impl_.key_.Set(value, GetArenaForAllocation());
+}
+inline std::string* ProcedureId::_internal_mutable_key() {
+  
+  return _impl_.key_.Mutable(GetArenaForAllocation());
+}
+inline std::string* ProcedureId::release_key() {
+  // @@protoc_insertion_point(field_release:greptime.v1.meta.ProcedureId.key)
+  return _impl_.key_.Release();
+}
+inline void ProcedureId::set_allocated_key(std::string* key) {
+  if (key != nullptr) {
+    
+  } else {
+    
+  }
+  _impl_.key_.SetAllocated(key, GetArenaForAllocation());
+#ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (_impl_.key_.IsDefault()) {
+    _impl_.key_.Set("", GetArenaForAllocation());
+  }
+#endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.ProcedureId.key)
+}
+
 #ifdef __GNUC__
   #pragma GCC diagnostic pop
 #endif  // __GNUC__
@@ -2273,6 +2484,8 @@ inline void KeyValue::set_allocated_value(std::string* value) {
 
 // -------------------------------------------------------------------
 
+// -------------------------------------------------------------------
+
 
 // @@protoc_insertion_point(namespace_scope)
 

c++/greptime/v1/meta/ddl.grpc.pb.cc

@@ -23,67 +23,6 @@ namespace greptime {
 namespace v1 {
 namespace meta {
 
-static const char* DdlTask_method_names[] = {
-  "/greptime.v1.meta.DdlTask/SubmitDdlTask",
-};
-
-std::unique_ptr< DdlTask::Stub> DdlTask::NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options) {
-  (void)options;
-  std::unique_ptr< DdlTask::Stub> stub(new DdlTask::Stub(channel, options));
-  return stub;
-}
-
-DdlTask::Stub::Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options)
-  : channel_(channel), rpcmethod_SubmitDdlTask_(DdlTask_method_names[0], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
-  {}
-
-::grpc::Status DdlTask::Stub::SubmitDdlTask(::grpc::ClientContext* context, const ::greptime::v1::meta::SubmitDdlTaskRequest& request, ::greptime::v1::meta::SubmitDdlTaskResponse* response) {
-  return ::grpc::internal::BlockingUnaryCall< ::greptime::v1::meta::SubmitDdlTaskRequest, ::greptime::v1::meta::SubmitDdlTaskResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_SubmitDdlTask_, context, request, response);
-}
-
-void DdlTask::Stub::async::SubmitDdlTask(::grpc::ClientContext* context, const ::greptime::v1::meta::SubmitDdlTaskRequest* request, ::greptime::v1::meta::SubmitDdlTaskResponse* response, std::function<void(::grpc::Status)> f) {
-  ::grpc::internal::CallbackUnaryCall< ::greptime::v1::meta::SubmitDdlTaskRequest, ::greptime::v1::meta::SubmitDdlTaskResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_SubmitDdlTask_, context, request, response, std::move(f));
-}
-
-void DdlTask::Stub::async::SubmitDdlTask(::grpc::ClientContext* context, const ::greptime::v1::meta::SubmitDdlTaskRequest* request, ::greptime::v1::meta::SubmitDdlTaskResponse* response, ::grpc::ClientUnaryReactor* reactor) {
-  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_SubmitDdlTask_, context, request, response, reactor);
-}
-
-::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::SubmitDdlTaskResponse>* DdlTask::Stub::PrepareAsyncSubmitDdlTaskRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::SubmitDdlTaskRequest& request, ::grpc::CompletionQueue* cq) {
-  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::greptime::v1::meta::SubmitDdlTaskResponse, ::greptime::v1::meta::SubmitDdlTaskRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_SubmitDdlTask_, context, request);
-}
-
-::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::SubmitDdlTaskResponse>* DdlTask::Stub::AsyncSubmitDdlTaskRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::SubmitDdlTaskRequest& request, ::grpc::CompletionQueue* cq) {
-  auto* result =
-    this->PrepareAsyncSubmitDdlTaskRaw(context, request, cq);
-  result->StartCall();
-  return result;
-}
-
-DdlTask::Service::Service() {
-  AddMethod(new ::grpc::internal::RpcServiceMethod(
-      DdlTask_method_names[0],
-      ::grpc::internal::RpcMethod::NORMAL_RPC,
-      new ::grpc::internal::RpcMethodHandler< DdlTask::Service, ::greptime::v1::meta::SubmitDdlTaskRequest, ::greptime::v1::meta::SubmitDdlTaskResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
-          [](DdlTask::Service* service,
-             ::grpc::ServerContext* ctx,
-             const ::greptime::v1::meta::SubmitDdlTaskRequest* req,
-             ::greptime::v1::meta::SubmitDdlTaskResponse* resp) {
-               return service->SubmitDdlTask(ctx, req, resp);
-             }, this)));
-}
-
-DdlTask::Service::~Service() {
-}
-
-::grpc::Status DdlTask::Service::SubmitDdlTask(::grpc::ServerContext* context, const ::greptime::v1::meta::SubmitDdlTaskRequest* request, ::greptime::v1::meta::SubmitDdlTaskResponse* response) {
-  (void) context;
-  (void) request;
-  (void) response;
-  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
-}
-
-
 }  // namespace greptime
 }  // namespace v1
 }  // namespace meta

c++/greptime/v1/meta/ddl.grpc.pb.h

@@ -44,216 +44,6 @@ namespace greptime {
 namespace v1 {
 namespace meta {
 
-class DdlTask final {
- public:
-  static constexpr char const* service_full_name() {
-    return "greptime.v1.meta.DdlTask";
-  }
-  class StubInterface {
-   public:
-    virtual ~StubInterface() {}
-    // Submits a DDL task to meta.
-    virtual ::grpc::Status SubmitDdlTask(::grpc::ClientContext* context, const ::greptime::v1::meta::SubmitDdlTaskRequest& request, ::greptime::v1::meta::SubmitDdlTaskResponse* response) = 0;
-    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::SubmitDdlTaskResponse>> AsyncSubmitDdlTask(::grpc::ClientContext* context, const ::greptime::v1::meta::SubmitDdlTaskRequest& request, ::grpc::CompletionQueue* cq) {
-      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::SubmitDdlTaskResponse>>(AsyncSubmitDdlTaskRaw(context, request, cq));
-    }
-    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::SubmitDdlTaskResponse>> PrepareAsyncSubmitDdlTask(::grpc::ClientContext* context, const ::greptime::v1::meta::SubmitDdlTaskRequest& request, ::grpc::CompletionQueue* cq) {
-      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::SubmitDdlTaskResponse>>(PrepareAsyncSubmitDdlTaskRaw(context, request, cq));
-    }
-    class async_interface {
-     public:
-      virtual ~async_interface() {}
-      // Submits a DDL task to meta.
-      virtual void SubmitDdlTask(::grpc::ClientContext* context, const ::greptime::v1::meta::SubmitDdlTaskRequest* request, ::greptime::v1::meta::SubmitDdlTaskResponse* response, std::function<void(::grpc::Status)>) = 0;
-      virtual void SubmitDdlTask(::grpc::ClientContext* context, const ::greptime::v1::meta::SubmitDdlTaskRequest* request, ::greptime::v1::meta::SubmitDdlTaskResponse* response, ::grpc::ClientUnaryReactor* reactor) = 0;
-    };
-    typedef class async_interface experimental_async_interface;
-    virtual class async_interface* async() { return nullptr; }
-    class async_interface* experimental_async() { return async(); }
-   private:
-    virtual ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::SubmitDdlTaskResponse>* AsyncSubmitDdlTaskRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::SubmitDdlTaskRequest& request, ::grpc::CompletionQueue* cq) = 0;
-    virtual ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::SubmitDdlTaskResponse>* PrepareAsyncSubmitDdlTaskRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::SubmitDdlTaskRequest& request, ::grpc::CompletionQueue* cq) = 0;
-  };
-  class Stub final : public StubInterface {
-   public:
-    Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
-    ::grpc::Status SubmitDdlTask(::grpc::ClientContext* context, const ::greptime::v1::meta::SubmitDdlTaskRequest& request, ::greptime::v1::meta::SubmitDdlTaskResponse* response) override;
-    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::SubmitDdlTaskResponse>> AsyncSubmitDdlTask(::grpc::ClientContext* context, const ::greptime::v1::meta::SubmitDdlTaskRequest& request, ::grpc::CompletionQueue* cq) {
-      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::SubmitDdlTaskResponse>>(AsyncSubmitDdlTaskRaw(context, request, cq));
-    }
-    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::SubmitDdlTaskResponse>> PrepareAsyncSubmitDdlTask(::grpc::ClientContext* context, const ::greptime::v1::meta::SubmitDdlTaskRequest& request, ::grpc::CompletionQueue* cq) {
-      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::SubmitDdlTaskResponse>>(PrepareAsyncSubmitDdlTaskRaw(context, request, cq));
-    }
-    class async final :
-      public StubInterface::async_interface {
-     public:
-      void SubmitDdlTask(::grpc::ClientContext* context, const ::greptime::v1::meta::SubmitDdlTaskRequest* request, ::greptime::v1::meta::SubmitDdlTaskResponse* response, std::function<void(::grpc::Status)>) override;
-      void SubmitDdlTask(::grpc::ClientContext* context, const ::greptime::v1::meta::SubmitDdlTaskRequest* request, ::greptime::v1::meta::SubmitDdlTaskResponse* response, ::grpc::ClientUnaryReactor* reactor) override;
-     private:
-      friend class Stub;
-      explicit async(Stub* stub): stub_(stub) { }
-      Stub* stub() { return stub_; }
-      Stub* stub_;
-    };
-    class async* async() override { return &async_stub_; }
-
-   private:
-    std::shared_ptr< ::grpc::ChannelInterface> channel_;
-    class async async_stub_{this};
-    ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::SubmitDdlTaskResponse>* AsyncSubmitDdlTaskRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::SubmitDdlTaskRequest& request, ::grpc::CompletionQueue* cq) override;
-    ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::SubmitDdlTaskResponse>* PrepareAsyncSubmitDdlTaskRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::SubmitDdlTaskRequest& request, ::grpc::CompletionQueue* cq) override;
-    const ::grpc::internal::RpcMethod rpcmethod_SubmitDdlTask_;
-  };
-  static std::unique_ptr<Stub> NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
-
-  class Service : public ::grpc::Service {
-   public:
-    Service();
-    virtual ~Service();
-    // Submits a DDL task to meta.
-    virtual ::grpc::Status SubmitDdlTask(::grpc::ServerContext* context, const ::greptime::v1::meta::SubmitDdlTaskRequest* request, ::greptime::v1::meta::SubmitDdlTaskResponse* response);
-  };
-  template <class BaseClass>
-  class WithAsyncMethod_SubmitDdlTask : public BaseClass {
-   private:
-    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
-   public:
-    WithAsyncMethod_SubmitDdlTask() {
-      ::grpc::Service::MarkMethodAsync(0);
-    }
-    ~WithAsyncMethod_SubmitDdlTask() override {
-      BaseClassMustBeDerivedFromService(this);
-    }
-    // disable synchronous version of this method
-    ::grpc::Status SubmitDdlTask(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::SubmitDdlTaskRequest* /*request*/, ::greptime::v1::meta::SubmitDdlTaskResponse* /*response*/) override {
-      abort();
-      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
-    }
-    void RequestSubmitDdlTask(::grpc::ServerContext* context, ::greptime::v1::meta::SubmitDdlTaskRequest* request, ::grpc::ServerAsyncResponseWriter< ::greptime::v1::meta::SubmitDdlTaskResponse>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
-      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
-    }
-  };
-  typedef WithAsyncMethod_SubmitDdlTask<Service > AsyncService;
-  template <class BaseClass>
-  class WithCallbackMethod_SubmitDdlTask : public BaseClass {
-   private:
-    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
-   public:
-    WithCallbackMethod_SubmitDdlTask() {
-      ::grpc::Service::MarkMethodCallback(0,
-          new ::grpc::internal::CallbackUnaryHandler< ::greptime::v1::meta::SubmitDdlTaskRequest, ::greptime::v1::meta::SubmitDdlTaskResponse>(
-            [this](
-                   ::grpc::CallbackServerContext* context, const ::greptime::v1::meta::SubmitDdlTaskRequest* request, ::greptime::v1::meta::SubmitDdlTaskResponse* response) { return this->SubmitDdlTask(context, request, response); }));}
-    void SetMessageAllocatorFor_SubmitDdlTask(
-        ::grpc::MessageAllocator< ::greptime::v1::meta::SubmitDdlTaskRequest, ::greptime::v1::meta::SubmitDdlTaskResponse>* allocator) {
-      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(0);
-      static_cast<::grpc::internal::CallbackUnaryHandler< ::greptime::v1::meta::SubmitDdlTaskRequest, ::greptime::v1::meta::SubmitDdlTaskResponse>*>(handler)
-              ->SetMessageAllocator(allocator);
-    }
-    ~WithCallbackMethod_SubmitDdlTask() override {
-      BaseClassMustBeDerivedFromService(this);
-    }
-    // disable synchronous version of this method
-    ::grpc::Status SubmitDdlTask(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::SubmitDdlTaskRequest* /*request*/, ::greptime::v1::meta::SubmitDdlTaskResponse* /*response*/) override {
-      abort();
-      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
-    }
-    virtual ::grpc::ServerUnaryReactor* SubmitDdlTask(
-      ::grpc::CallbackServerContext* /*context*/, const ::greptime::v1::meta::SubmitDdlTaskRequest* /*request*/, ::greptime::v1::meta::SubmitDdlTaskResponse* /*response*/)  { return nullptr; }
-  };
-  typedef WithCallbackMethod_SubmitDdlTask<Service > CallbackService;
-  typedef CallbackService ExperimentalCallbackService;
-  template <class BaseClass>
-  class WithGenericMethod_SubmitDdlTask : public BaseClass {
-   private:
-    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
-   public:
-    WithGenericMethod_SubmitDdlTask() {
-      ::grpc::Service::MarkMethodGeneric(0);
-    }
-    ~WithGenericMethod_SubmitDdlTask() override {
-      BaseClassMustBeDerivedFromService(this);
-    }
-    // disable synchronous version of this method
-    ::grpc::Status SubmitDdlTask(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::SubmitDdlTaskRequest* /*request*/, ::greptime::v1::meta::SubmitDdlTaskResponse* /*response*/) override {
-      abort();
-      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
-    }
-  };
-  template <class BaseClass>
-  class WithRawMethod_SubmitDdlTask : public BaseClass {
-   private:
-    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
-   public:
-    WithRawMethod_SubmitDdlTask() {
-      ::grpc::Service::MarkMethodRaw(0);
-    }
-    ~WithRawMethod_SubmitDdlTask() override {
-      BaseClassMustBeDerivedFromService(this);
-    }
-    // disable synchronous version of this method
-    ::grpc::Status SubmitDdlTask(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::SubmitDdlTaskRequest* /*request*/, ::greptime::v1::meta::SubmitDdlTaskResponse* /*response*/) override {
-      abort();
-      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
-    }
-    void RequestSubmitDdlTask(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
-      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
-    }
-  };
-  template <class BaseClass>
-  class WithRawCallbackMethod_SubmitDdlTask : public BaseClass {
-   private:
-    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
-   public:
-    WithRawCallbackMethod_SubmitDdlTask() {
-      ::grpc::Service::MarkMethodRawCallback(0,
-          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
-            [this](
-                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->SubmitDdlTask(context, request, response); }));
-    }
-    ~WithRawCallbackMethod_SubmitDdlTask() override {
-      BaseClassMustBeDerivedFromService(this);
-    }
-    // disable synchronous version of this method
-    ::grpc::Status SubmitDdlTask(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::SubmitDdlTaskRequest* /*request*/, ::greptime::v1::meta::SubmitDdlTaskResponse* /*response*/) override {
-      abort();
-      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
-    }
-    virtual ::grpc::ServerUnaryReactor* SubmitDdlTask(
-      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
-  };
-  template <class BaseClass>
-  class WithStreamedUnaryMethod_SubmitDdlTask : public BaseClass {
-   private:
-    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
-   public:
-    WithStreamedUnaryMethod_SubmitDdlTask() {
-      ::grpc::Service::MarkMethodStreamed(0,
-        new ::grpc::internal::StreamedUnaryHandler<
-          ::greptime::v1::meta::SubmitDdlTaskRequest, ::greptime::v1::meta::SubmitDdlTaskResponse>(
-            [this](::grpc::ServerContext* context,
-                   ::grpc::ServerUnaryStreamer<
-                     ::greptime::v1::meta::SubmitDdlTaskRequest, ::greptime::v1::meta::SubmitDdlTaskResponse>* streamer) {
-                       return this->StreamedSubmitDdlTask(context,
-                         streamer);
-                  }));
-    }
-    ~WithStreamedUnaryMethod_SubmitDdlTask() override {
-      BaseClassMustBeDerivedFromService(this);
-    }
-    // disable regular version of this method
-    ::grpc::Status SubmitDdlTask(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::SubmitDdlTaskRequest* /*request*/, ::greptime::v1::meta::SubmitDdlTaskResponse* /*response*/) override {
-      abort();
-      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
-    }
-    // replace default version of method with streamed unary
-    virtual ::grpc::Status StreamedSubmitDdlTask(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::greptime::v1::meta::SubmitDdlTaskRequest,::greptime::v1::meta::SubmitDdlTaskResponse>* server_unary_streamer) = 0;
-  };
-  typedef WithStreamedUnaryMethod_SubmitDdlTask<Service > StreamedUnaryService;
-  typedef Service SplitStreamedService;
-  typedef WithStreamedUnaryMethod_SubmitDdlTask<Service > StreamedService;
-};
-
 }  // namespace meta
 }  // namespace v1
 }  // namespace greptime

c++/greptime/v1/meta/ddl.pb.cc

@@ -116,37 +116,37 @@ struct TruncateTableTaskDefaultTypeInternal {
   };
 };
 PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 TruncateTableTaskDefaultTypeInternal _TruncateTableTask_default_instance_;
-PROTOBUF_CONSTEXPR SubmitDdlTaskRequest::SubmitDdlTaskRequest(
+PROTOBUF_CONSTEXPR DdlTaskRequest::DdlTaskRequest(
     ::_pbi::ConstantInitialized): _impl_{
     /*decltype(_impl_.header_)*/nullptr
   , /*decltype(_impl_.task_)*/{}
   , /*decltype(_impl_._cached_size_)*/{}
   , /*decltype(_impl_._oneof_case_)*/{}} {}
-struct SubmitDdlTaskRequestDefaultTypeInternal {
+struct DdlTaskRequestDefaultTypeInternal {
-  PROTOBUF_CONSTEXPR SubmitDdlTaskRequestDefaultTypeInternal()
+  PROTOBUF_CONSTEXPR DdlTaskRequestDefaultTypeInternal()
       : _instance(::_pbi::ConstantInitialized{}) {}
-  ~SubmitDdlTaskRequestDefaultTypeInternal() {}
+  ~DdlTaskRequestDefaultTypeInternal() {}
   union {
-    SubmitDdlTaskRequest _instance;
+    DdlTaskRequest _instance;
   };
 };
-PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 SubmitDdlTaskRequestDefaultTypeInternal _SubmitDdlTaskRequest_default_instance_;
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 DdlTaskRequestDefaultTypeInternal _DdlTaskRequest_default_instance_;
-PROTOBUF_CONSTEXPR SubmitDdlTaskResponse::SubmitDdlTaskResponse(
+PROTOBUF_CONSTEXPR DdlTaskResponse::DdlTaskResponse(
     ::_pbi::ConstantInitialized): _impl_{
     /*decltype(_impl_.table_ids_)*/{}
-  , /*decltype(_impl_.key_)*/{&::_pbi::fixed_address_empty_string, ::_pbi::ConstantInitialized{}}
   , /*decltype(_impl_.header_)*/nullptr
+  , /*decltype(_impl_.pid_)*/nullptr
   , /*decltype(_impl_.table_id_)*/nullptr
   , /*decltype(_impl_._cached_size_)*/{}} {}
-struct SubmitDdlTaskResponseDefaultTypeInternal {
+struct DdlTaskResponseDefaultTypeInternal {
-  PROTOBUF_CONSTEXPR SubmitDdlTaskResponseDefaultTypeInternal()
+  PROTOBUF_CONSTEXPR DdlTaskResponseDefaultTypeInternal()
       : _instance(::_pbi::ConstantInitialized{}) {}
-  ~SubmitDdlTaskResponseDefaultTypeInternal() {}
+  ~DdlTaskResponseDefaultTypeInternal() {}
   union {
-    SubmitDdlTaskResponse _instance;
+    DdlTaskResponse _instance;
   };
 };
-PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 SubmitDdlTaskResponseDefaultTypeInternal _SubmitDdlTaskResponse_default_instance_;
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 DdlTaskResponseDefaultTypeInternal _DdlTaskResponse_default_instance_;
 }  // namespace meta
 }  // namespace v1
 }  // namespace greptime
@@ -207,12 +207,12 @@ const uint32_t TableStruct_greptime_2fv1_2fmeta_2fddl_2eproto::offsets[] PROTOBU
   ~0u,  // no _inlined_string_donated_
   PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::TruncateTableTask, _impl_.truncate_table_),
   ~0u,  // no _has_bits_
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::SubmitDdlTaskRequest, _internal_metadata_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::DdlTaskRequest, _internal_metadata_),
   ~0u,  // no _extensions_
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::SubmitDdlTaskRequest, _impl_._oneof_case_[0]),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::DdlTaskRequest, _impl_._oneof_case_[0]),
   ~0u,  // no _weak_field_map_
   ~0u,  // no _inlined_string_donated_
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::SubmitDdlTaskRequest, _impl_.header_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::DdlTaskRequest, _impl_.header_),
   ::_pbi::kInvalidFieldOffsetTag,
   ::_pbi::kInvalidFieldOffsetTag,
   ::_pbi::kInvalidFieldOffsetTag,
@@ -220,17 +220,17 @@ const uint32_t TableStruct_greptime_2fv1_2fmeta_2fddl_2eproto::offsets[] PROTOBU
   ::_pbi::kInvalidFieldOffsetTag,
   ::_pbi::kInvalidFieldOffsetTag,
   ::_pbi::kInvalidFieldOffsetTag,
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::SubmitDdlTaskRequest, _impl_.task_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::DdlTaskRequest, _impl_.task_),
   ~0u,  // no _has_bits_
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::SubmitDdlTaskResponse, _internal_metadata_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::DdlTaskResponse, _internal_metadata_),
   ~0u,  // no _extensions_
   ~0u,  // no _oneof_case_
   ~0u,  // no _weak_field_map_
   ~0u,  // no _inlined_string_donated_
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::SubmitDdlTaskResponse, _impl_.header_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::DdlTaskResponse, _impl_.header_),
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::SubmitDdlTaskResponse, _impl_.key_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::DdlTaskResponse, _impl_.pid_),
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::SubmitDdlTaskResponse, _impl_.table_id_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::DdlTaskResponse, _impl_.table_id_),
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::SubmitDdlTaskResponse, _impl_.table_ids_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::DdlTaskResponse, _impl_.table_ids_),
 };
 static const ::_pbi::MigrationSchema schemas[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
   { 0, -1, -1, sizeof(::greptime::v1::meta::CreateTableTask)},
@@ -240,8 +240,8 @@ static const ::_pbi::MigrationSchema schemas[] PROTOBUF_SECTION_VARIABLE(protode
   { 30, -1, -1, sizeof(::greptime::v1::meta::AlterTableTask)},
   { 37, -1, -1, sizeof(::greptime::v1::meta::AlterTableTasks)},
   { 44, -1, -1, sizeof(::greptime::v1::meta::TruncateTableTask)},
-  { 51, -1, -1, sizeof(::greptime::v1::meta::SubmitDdlTaskRequest)},
+  { 51, -1, -1, sizeof(::greptime::v1::meta::DdlTaskRequest)},
-  { 66, -1, -1, sizeof(::greptime::v1::meta::SubmitDdlTaskResponse)},
+  { 66, -1, -1, sizeof(::greptime::v1::meta::DdlTaskResponse)},
 };
 
 static const ::_pb::Message* const file_default_instances[] = {
@@ -252,8 +252,8 @@ static const ::_pb::Message* const file_default_instances[] = {
   &::greptime::v1::meta::_AlterTableTask_default_instance_._instance,
   &::greptime::v1::meta::_AlterTableTasks_default_instance_._instance,
   &::greptime::v1::meta::_TruncateTableTask_default_instance_._instance,
-  &::greptime::v1::meta::_SubmitDdlTaskRequest_default_instance_._instance,
+  &::greptime::v1::meta::_DdlTaskRequest_default_instance_._instance,
-  &::greptime::v1::meta::_SubmitDdlTaskResponse_default_instance_._instance,
+  &::greptime::v1::meta::_DdlTaskResponse_default_instance_._instance,
 };
 
 const char descriptor_table_protodef_greptime_2fv1_2fmeta_2fddl_2eproto[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) =
@@ -274,30 +274,27 @@ const char descriptor_table_protodef_greptime_2fv1_2fmeta_2fddl_2eproto[] PROTOB
   "sks\030\001 \003(\0132 .greptime.v1.meta.AlterTableT"
   "ask\"K\n\021TruncateTableTask\0226\n\016truncate_tab"
   "le\030\001 \001(\0132\036.greptime.v1.TruncateTableExpr"
-  "\"\215\004\n\024SubmitDdlTaskRequest\022/\n\006header\030\001 \001("
+  "\"\207\004\n\016DdlTaskRequest\022/\n\006header\030\001 \001(\0132\037.gr"
-  "\0132\037.greptime.v1.meta.RequestHeader\022>\n\021cr"
+  "eptime.v1.meta.RequestHeader\022>\n\021create_t"
-  "eate_table_task\030\002 \001(\0132!.greptime.v1.meta"
+  "able_task\030\002 \001(\0132!.greptime.v1.meta.Creat"
-  ".CreateTableTaskH\000\022:\n\017drop_table_task\030\003 "
+  "eTableTaskH\000\022:\n\017drop_table_task\030\003 \001(\0132\037."
-  "\001(\0132\037.greptime.v1.meta.DropTableTaskH\000\022<"
+  "greptime.v1.meta.DropTableTaskH\000\022<\n\020alte"
-  "\n\020alter_table_task\030\004 \001(\0132 .greptime.v1.m"
+  "r_table_task\030\004 \001(\0132 .greptime.v1.meta.Al"
-  "eta.AlterTableTaskH\000\022B\n\023truncate_table_t"
+  "terTableTaskH\000\022B\n\023truncate_table_task\030\005 "
-  "ask\030\005 \001(\0132#.greptime.v1.meta.TruncateTab"
+  "\001(\0132#.greptime.v1.meta.TruncateTableTask"
-  "leTaskH\000\022@\n\022create_table_tasks\030\006 \001(\0132\".g"
+  "H\000\022@\n\022create_table_tasks\030\006 \001(\0132\".greptim"
-  "reptime.v1.meta.CreateTableTasksH\000\022<\n\020dr"
+  "e.v1.meta.CreateTableTasksH\000\022<\n\020drop_tab"
-  "op_table_tasks\030\007 \001(\0132 .greptime.v1.meta."
+  "le_tasks\030\007 \001(\0132 .greptime.v1.meta.DropTa"
-  "DropTableTasksH\000\022>\n\021alter_table_tasks\030\010 "
+  "bleTasksH\000\022>\n\021alter_table_tasks\030\010 \001(\0132!."
-  "\001(\0132!.greptime.v1.meta.AlterTableTasksH\000"
+  "greptime.v1.meta.AlterTableTasksH\000B\006\n\004ta"
-  "B\006\n\004task\"\261\001\n\025SubmitDdlTaskResponse\0220\n\006he"
+  "sk\"\312\001\n\017DdlTaskResponse\0220\n\006header\030\001 \001(\0132 "
-  "ader\030\001 \001(\0132 .greptime.v1.meta.ResponseHe"
+  ".greptime.v1.meta.ResponseHeader\022*\n\003pid\030"
-  "ader\022\013\n\003key\030\002 \001(\014\022+\n\010table_id\030\004 \001(\0132\031.gr"
+  "\002 \001(\0132\035.greptime.v1.meta.ProcedureId\022+\n\010"
-  "eptime.v1.meta.TableId\022,\n\ttable_ids\030\005 \003("
+  "table_id\030\004 \001(\0132\031.greptime.v1.meta.TableI"
-  "\0132\031.greptime.v1.meta.TableId*#\n\013DdlTaskT"
+  "d\022,\n\ttable_ids\030\005 \003(\0132\031.greptime.v1.meta."
-  "ype\022\n\n\006Create\020\000\022\010\n\004Drop\020\0012k\n\007DdlTask\022`\n\r"
+  "TableId*#\n\013DdlTaskType\022\n\n\006Create\020\000\022\010\n\004Dr"
-  "SubmitDdlTask\022&.greptime.v1.meta.SubmitD"
+  "op\020\001B<Z:github.com/GreptimeTeam/greptime"
-  "dlTaskRequest\032\'.greptime.v1.meta.SubmitD"
+  "-proto/go/greptime/v1/metab\006proto3"
-  "dlTaskResponseB<Z:github.com/GreptimeTea"
-  "m/greptime-proto/go/greptime/v1/metab\006pr"
-  "oto3"
   ;
 static const ::_pbi::DescriptorTable* const descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_deps[3] = {
   &::descriptor_table_greptime_2fv1_2fddl_2eproto,
@@ -306,7 +303,7 @@ static const ::_pbi::DescriptorTable* const descriptor_table_greptime_2fv1_2fmet
 };
 static ::_pbi::once_flag descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_once;
 const ::_pbi::DescriptorTable descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto = {
-    false, false, 1604, descriptor_table_protodef_greptime_2fv1_2fmeta_2fddl_2eproto,
+    false, false, 1514, descriptor_table_protodef_greptime_2fv1_2fmeta_2fddl_2eproto,
     "greptime/v1/meta/ddl.proto",
     &descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_once, descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_deps, 3, 9,
     schemas, file_default_instances, TableStruct_greptime_2fv1_2fmeta_2fddl_2eproto::offsets,
@@ -1774,57 +1771,57 @@ void TruncateTableTask::InternalSwap(TruncateTableTask* other) {
 
 // ===================================================================
 
-class SubmitDdlTaskRequest::_Internal {
+class DdlTaskRequest::_Internal {
  public:
-  static const ::greptime::v1::meta::RequestHeader& header(const SubmitDdlTaskRequest* msg);
+  static const ::greptime::v1::meta::RequestHeader& header(const DdlTaskRequest* msg);
-  static const ::greptime::v1::meta::CreateTableTask& create_table_task(const SubmitDdlTaskRequest* msg);
+  static const ::greptime::v1::meta::CreateTableTask& create_table_task(const DdlTaskRequest* msg);
-  static const ::greptime::v1::meta::DropTableTask& drop_table_task(const SubmitDdlTaskRequest* msg);
+  static const ::greptime::v1::meta::DropTableTask& drop_table_task(const DdlTaskRequest* msg);
-  static const ::greptime::v1::meta::AlterTableTask& alter_table_task(const SubmitDdlTaskRequest* msg);
+  static const ::greptime::v1::meta::AlterTableTask& alter_table_task(const DdlTaskRequest* msg);
-  static const ::greptime::v1::meta::TruncateTableTask& truncate_table_task(const SubmitDdlTaskRequest* msg);
+  static const ::greptime::v1::meta::TruncateTableTask& truncate_table_task(const DdlTaskRequest* msg);
-  static const ::greptime::v1::meta::CreateTableTasks& create_table_tasks(const SubmitDdlTaskRequest* msg);
+  static const ::greptime::v1::meta::CreateTableTasks& create_table_tasks(const DdlTaskRequest* msg);
-  static const ::greptime::v1::meta::DropTableTasks& drop_table_tasks(const SubmitDdlTaskRequest* msg);
+  static const ::greptime::v1::meta::DropTableTasks& drop_table_tasks(const DdlTaskRequest* msg);
-  static const ::greptime::v1::meta::AlterTableTasks& alter_table_tasks(const SubmitDdlTaskRequest* msg);
+  static const ::greptime::v1::meta::AlterTableTasks& alter_table_tasks(const DdlTaskRequest* msg);
 };
 
 const ::greptime::v1::meta::RequestHeader&
-SubmitDdlTaskRequest::_Internal::header(const SubmitDdlTaskRequest* msg) {
+DdlTaskRequest::_Internal::header(const DdlTaskRequest* msg) {
   return *msg->_impl_.header_;
 }
 const ::greptime::v1::meta::CreateTableTask&
-SubmitDdlTaskRequest::_Internal::create_table_task(const SubmitDdlTaskRequest* msg) {
+DdlTaskRequest::_Internal::create_table_task(const DdlTaskRequest* msg) {
   return *msg->_impl_.task_.create_table_task_;
 }
 const ::greptime::v1::meta::DropTableTask&
-SubmitDdlTaskRequest::_Internal::drop_table_task(const SubmitDdlTaskRequest* msg) {
+DdlTaskRequest::_Internal::drop_table_task(const DdlTaskRequest* msg) {
   return *msg->_impl_.task_.drop_table_task_;
 }
 const ::greptime::v1::meta::AlterTableTask&
-SubmitDdlTaskRequest::_Internal::alter_table_task(const SubmitDdlTaskRequest* msg) {
+DdlTaskRequest::_Internal::alter_table_task(const DdlTaskRequest* msg) {
   return *msg->_impl_.task_.alter_table_task_;
 }
 const ::greptime::v1::meta::TruncateTableTask&
-SubmitDdlTaskRequest::_Internal::truncate_table_task(const SubmitDdlTaskRequest* msg) {
+DdlTaskRequest::_Internal::truncate_table_task(const DdlTaskRequest* msg) {
   return *msg->_impl_.task_.truncate_table_task_;
 }
 const ::greptime::v1::meta::CreateTableTasks&
-SubmitDdlTaskRequest::_Internal::create_table_tasks(const SubmitDdlTaskRequest* msg) {
+DdlTaskRequest::_Internal::create_table_tasks(const DdlTaskRequest* msg) {
   return *msg->_impl_.task_.create_table_tasks_;
 }
 const ::greptime::v1::meta::DropTableTasks&
-SubmitDdlTaskRequest::_Internal::drop_table_tasks(const SubmitDdlTaskRequest* msg) {
+DdlTaskRequest::_Internal::drop_table_tasks(const DdlTaskRequest* msg) {
   return *msg->_impl_.task_.drop_table_tasks_;
 }
 const ::greptime::v1::meta::AlterTableTasks&
-SubmitDdlTaskRequest::_Internal::alter_table_tasks(const SubmitDdlTaskRequest* msg) {
+DdlTaskRequest::_Internal::alter_table_tasks(const DdlTaskRequest* msg) {
   return *msg->_impl_.task_.alter_table_tasks_;
 }
-void SubmitDdlTaskRequest::clear_header() {
+void DdlTaskRequest::clear_header() {
   if (GetArenaForAllocation() == nullptr && _impl_.header_ != nullptr) {
     delete _impl_.header_;
   }
   _impl_.header_ = nullptr;
 }
-void SubmitDdlTaskRequest::set_allocated_create_table_task(::greptime::v1::meta::CreateTableTask* create_table_task) {
+void DdlTaskRequest::set_allocated_create_table_task(::greptime::v1::meta::CreateTableTask* create_table_task) {
   ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
   clear_task();
   if (create_table_task) {
@@ -1837,9 +1834,9 @@ void SubmitDdlTaskRequest::set_allocated_create_table_task(::greptime::v1::meta:
     set_has_create_table_task();
     _impl_.task_.create_table_task_ = create_table_task;
   }
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.SubmitDdlTaskRequest.create_table_task)
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.DdlTaskRequest.create_table_task)
 }
-void SubmitDdlTaskRequest::set_allocated_drop_table_task(::greptime::v1::meta::DropTableTask* drop_table_task) {
+void DdlTaskRequest::set_allocated_drop_table_task(::greptime::v1::meta::DropTableTask* drop_table_task) {
   ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
   clear_task();
   if (drop_table_task) {
@@ -1852,9 +1849,9 @@ void SubmitDdlTaskRequest::set_allocated_drop_table_task(::greptime::v1::meta::D
     set_has_drop_table_task();
     _impl_.task_.drop_table_task_ = drop_table_task;
   }
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.SubmitDdlTaskRequest.drop_table_task)
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.DdlTaskRequest.drop_table_task)
 }
-void SubmitDdlTaskRequest::set_allocated_alter_table_task(::greptime::v1::meta::AlterTableTask* alter_table_task) {
+void DdlTaskRequest::set_allocated_alter_table_task(::greptime::v1::meta::AlterTableTask* alter_table_task) {
   ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
   clear_task();
   if (alter_table_task) {
@@ -1867,9 +1864,9 @@ void SubmitDdlTaskRequest::set_allocated_alter_table_task(::greptime::v1::meta::
     set_has_alter_table_task();
     _impl_.task_.alter_table_task_ = alter_table_task;
   }
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.SubmitDdlTaskRequest.alter_table_task)
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.DdlTaskRequest.alter_table_task)
 }
-void SubmitDdlTaskRequest::set_allocated_truncate_table_task(::greptime::v1::meta::TruncateTableTask* truncate_table_task) {
+void DdlTaskRequest::set_allocated_truncate_table_task(::greptime::v1::meta::TruncateTableTask* truncate_table_task) {
   ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
   clear_task();
   if (truncate_table_task) {
@@ -1882,9 +1879,9 @@ void SubmitDdlTaskRequest::set_allocated_truncate_table_task(::greptime::v1::met
     set_has_truncate_table_task();
     _impl_.task_.truncate_table_task_ = truncate_table_task;
   }
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.SubmitDdlTaskRequest.truncate_table_task)
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.DdlTaskRequest.truncate_table_task)
 }
-void SubmitDdlTaskRequest::set_allocated_create_table_tasks(::greptime::v1::meta::CreateTableTasks* create_table_tasks) {
+void DdlTaskRequest::set_allocated_create_table_tasks(::greptime::v1::meta::CreateTableTasks* create_table_tasks) {
   ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
   clear_task();
   if (create_table_tasks) {
@@ -1897,9 +1894,9 @@ void SubmitDdlTaskRequest::set_allocated_create_table_tasks(::greptime::v1::meta
     set_has_create_table_tasks();
     _impl_.task_.create_table_tasks_ = create_table_tasks;
   }
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.SubmitDdlTaskRequest.create_table_tasks)
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.DdlTaskRequest.create_table_tasks)
 }
-void SubmitDdlTaskRequest::set_allocated_drop_table_tasks(::greptime::v1::meta::DropTableTasks* drop_table_tasks) {
+void DdlTaskRequest::set_allocated_drop_table_tasks(::greptime::v1::meta::DropTableTasks* drop_table_tasks) {
   ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
   clear_task();
   if (drop_table_tasks) {
@@ -1912,9 +1909,9 @@ void SubmitDdlTaskRequest::set_allocated_drop_table_tasks(::greptime::v1::meta::
     set_has_drop_table_tasks();
     _impl_.task_.drop_table_tasks_ = drop_table_tasks;
   }
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.SubmitDdlTaskRequest.drop_table_tasks)
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.DdlTaskRequest.drop_table_tasks)
 }
-void SubmitDdlTaskRequest::set_allocated_alter_table_tasks(::greptime::v1::meta::AlterTableTasks* alter_table_tasks) {
+void DdlTaskRequest::set_allocated_alter_table_tasks(::greptime::v1::meta::AlterTableTasks* alter_table_tasks) {
   ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
   clear_task();
   if (alter_table_tasks) {
@@ -1927,17 +1924,17 @@ void SubmitDdlTaskRequest::set_allocated_alter_table_tasks(::greptime::v1::meta:
     set_has_alter_table_tasks();
     _impl_.task_.alter_table_tasks_ = alter_table_tasks;
   }
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.SubmitDdlTaskRequest.alter_table_tasks)
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.DdlTaskRequest.alter_table_tasks)
 }
-SubmitDdlTaskRequest::SubmitDdlTaskRequest(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+DdlTaskRequest::DdlTaskRequest(::PROTOBUF_NAMESPACE_ID::Arena* arena,
                          bool is_message_owned)
   : ::PROTOBUF_NAMESPACE_ID::Message(arena, is_message_owned) {
   SharedCtor(arena, is_message_owned);
-  // @@protoc_insertion_point(arena_constructor:greptime.v1.meta.SubmitDdlTaskRequest)
+  // @@protoc_insertion_point(arena_constructor:greptime.v1.meta.DdlTaskRequest)
 }
-SubmitDdlTaskRequest::SubmitDdlTaskRequest(const SubmitDdlTaskRequest& from)
+DdlTaskRequest::DdlTaskRequest(const DdlTaskRequest& from)
   : ::PROTOBUF_NAMESPACE_ID::Message() {
-  SubmitDdlTaskRequest* const _this = this; (void)_this;
+  DdlTaskRequest* const _this = this; (void)_this;
   new (&_impl_) Impl_{
       decltype(_impl_.header_){nullptr}
     , decltype(_impl_.task_){}
@@ -1989,10 +1986,10 @@ SubmitDdlTaskRequest::SubmitDdlTaskRequest(const SubmitDdlTaskRequest& from)
       break;
     }
   }
-  // @@protoc_insertion_point(copy_constructor:greptime.v1.meta.SubmitDdlTaskRequest)
+  // @@protoc_insertion_point(copy_constructor:greptime.v1.meta.DdlTaskRequest)
 }
 
-inline void SubmitDdlTaskRequest::SharedCtor(
+inline void DdlTaskRequest::SharedCtor(
     ::_pb::Arena* arena, bool is_message_owned) {
   (void)arena;
   (void)is_message_owned;
@@ -2005,8 +2002,8 @@ inline void SubmitDdlTaskRequest::SharedCtor(
   clear_has_task();
 }
 
-SubmitDdlTaskRequest::~SubmitDdlTaskRequest() {
+DdlTaskRequest::~DdlTaskRequest() {
-  // @@protoc_insertion_point(destructor:greptime.v1.meta.SubmitDdlTaskRequest)
+  // @@protoc_insertion_point(destructor:greptime.v1.meta.DdlTaskRequest)
   if (auto *arena = _internal_metadata_.DeleteReturnArena<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>()) {
   (void)arena;
     return;
@@ -2014,7 +2011,7 @@ SubmitDdlTaskRequest::~SubmitDdlTaskRequest() {
   SharedDtor();
 }
 
-inline void SubmitDdlTaskRequest::SharedDtor() {
+inline void DdlTaskRequest::SharedDtor() {
   GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
   if (this != internal_default_instance()) delete _impl_.header_;
   if (has_task()) {
@@ -2022,12 +2019,12 @@ inline void SubmitDdlTaskRequest::SharedDtor() {
   }
 }
 
-void SubmitDdlTaskRequest::SetCachedSize(int size) const {
+void DdlTaskRequest::SetCachedSize(int size) const {
   _impl_._cached_size_.Set(size);
 }
 
-void SubmitDdlTaskRequest::clear_task() {
+void DdlTaskRequest::clear_task() {
-// @@protoc_insertion_point(one_of_clear_start:greptime.v1.meta.SubmitDdlTaskRequest)
+// @@protoc_insertion_point(one_of_clear_start:greptime.v1.meta.DdlTaskRequest)
   switch (task_case()) {
     case kCreateTableTask: {
       if (GetArenaForAllocation() == nullptr) {
@@ -2079,8 +2076,8 @@ void SubmitDdlTaskRequest::clear_task() {
 }
 
 
-void SubmitDdlTaskRequest::Clear() {
+void DdlTaskRequest::Clear() {
-// @@protoc_insertion_point(message_clear_start:greptime.v1.meta.SubmitDdlTaskRequest)
+// @@protoc_insertion_point(message_clear_start:greptime.v1.meta.DdlTaskRequest)
   uint32_t cached_has_bits = 0;
   // Prevent compiler warnings about cached_has_bits being unused
   (void) cached_has_bits;
@@ -2093,7 +2090,7 @@ void SubmitDdlTaskRequest::Clear() {
   _internal_metadata_.Clear<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>();
 }
 
-const char* SubmitDdlTaskRequest::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx) {
+const char* DdlTaskRequest::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx) {
 #define CHK_(x) if (PROTOBUF_PREDICT_FALSE(!(x))) goto failure
   while (!ctx->Done(&ptr)) {
     uint32_t tag;
@@ -2186,9 +2183,9 @@ failure:
 #undef CHK_
 }
 
-uint8_t* SubmitDdlTaskRequest::_InternalSerialize(
+uint8_t* DdlTaskRequest::_InternalSerialize(
     uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const {
-  // @@protoc_insertion_point(serialize_to_array_start:greptime.v1.meta.SubmitDdlTaskRequest)
+  // @@protoc_insertion_point(serialize_to_array_start:greptime.v1.meta.DdlTaskRequest)
   uint32_t cached_has_bits = 0;
   (void) cached_has_bits;
 
@@ -2252,12 +2249,12 @@ uint8_t* SubmitDdlTaskRequest::_InternalSerialize(
     target = ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
         _internal_metadata_.unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(::PROTOBUF_NAMESPACE_ID::UnknownFieldSet::default_instance), target, stream);
   }
-  // @@protoc_insertion_point(serialize_to_array_end:greptime.v1.meta.SubmitDdlTaskRequest)
+  // @@protoc_insertion_point(serialize_to_array_end:greptime.v1.meta.DdlTaskRequest)
   return target;
 }
 
-size_t SubmitDdlTaskRequest::ByteSizeLong() const {
+size_t DdlTaskRequest::ByteSizeLong() const {
-// @@protoc_insertion_point(message_byte_size_start:greptime.v1.meta.SubmitDdlTaskRequest)
+// @@protoc_insertion_point(message_byte_size_start:greptime.v1.meta.DdlTaskRequest)
   size_t total_size = 0;
 
   uint32_t cached_has_bits = 0;
@@ -2328,17 +2325,17 @@ size_t SubmitDdlTaskRequest::ByteSizeLong() const {
   return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
 }
 
-const ::PROTOBUF_NAMESPACE_ID::Message::ClassData SubmitDdlTaskRequest::_class_data_ = {
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData DdlTaskRequest::_class_data_ = {
     ::PROTOBUF_NAMESPACE_ID::Message::CopyWithSourceCheck,
-    SubmitDdlTaskRequest::MergeImpl
+    DdlTaskRequest::MergeImpl
 };
-const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*SubmitDdlTaskRequest::GetClassData() const { return &_class_data_; }
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*DdlTaskRequest::GetClassData() const { return &_class_data_; }
 
 
-void SubmitDdlTaskRequest::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg) {
+void DdlTaskRequest::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg) {
-  auto* const _this = static_cast<SubmitDdlTaskRequest*>(&to_msg);
+  auto* const _this = static_cast<DdlTaskRequest*>(&to_msg);
-  auto& from = static_cast<const SubmitDdlTaskRequest&>(from_msg);
+  auto& from = static_cast<const DdlTaskRequest&>(from_msg);
-  // @@protoc_insertion_point(class_specific_merge_from_start:greptime.v1.meta.SubmitDdlTaskRequest)
+  // @@protoc_insertion_point(class_specific_merge_from_start:greptime.v1.meta.DdlTaskRequest)
   GOOGLE_DCHECK_NE(&from, _this);
   uint32_t cached_has_bits = 0;
   (void) cached_has_bits;
@@ -2390,18 +2387,18 @@ void SubmitDdlTaskRequest::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, c
   _this->_internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
 }
 
-void SubmitDdlTaskRequest::CopyFrom(const SubmitDdlTaskRequest& from) {
+void DdlTaskRequest::CopyFrom(const DdlTaskRequest& from) {
-// @@protoc_insertion_point(class_specific_copy_from_start:greptime.v1.meta.SubmitDdlTaskRequest)
+// @@protoc_insertion_point(class_specific_copy_from_start:greptime.v1.meta.DdlTaskRequest)
   if (&from == this) return;
   Clear();
   MergeFrom(from);
 }
 
-bool SubmitDdlTaskRequest::IsInitialized() const {
+bool DdlTaskRequest::IsInitialized() const {
   return true;
 }
 
-void SubmitDdlTaskRequest::InternalSwap(SubmitDdlTaskRequest* other) {
+void DdlTaskRequest::InternalSwap(DdlTaskRequest* other) {
   using std::swap;
   _internal_metadata_.InternalSwap(&other->_internal_metadata_);
   swap(_impl_.header_, other->_impl_.header_);
@@ -2409,7 +2406,7 @@ void SubmitDdlTaskRequest::InternalSwap(SubmitDdlTaskRequest* other) {
   swap(_impl_._oneof_case_[0], other->_impl_._oneof_case_[0]);
 }
 
-::PROTOBUF_NAMESPACE_ID::Metadata SubmitDdlTaskRequest::GetMetadata() const {
+::PROTOBUF_NAMESPACE_ID::Metadata DdlTaskRequest::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_once,
       file_level_metadata_greptime_2fv1_2fmeta_2fddl_2eproto[7]);
@@ -2417,88 +2414,90 @@ void SubmitDdlTaskRequest::InternalSwap(SubmitDdlTaskRequest* other) {
 
 // ===================================================================
 
-class SubmitDdlTaskResponse::_Internal {
+class DdlTaskResponse::_Internal {
  public:
-  static const ::greptime::v1::meta::ResponseHeader& header(const SubmitDdlTaskResponse* msg);
+  static const ::greptime::v1::meta::ResponseHeader& header(const DdlTaskResponse* msg);
-  static const ::greptime::v1::meta::TableId& table_id(const SubmitDdlTaskResponse* msg);
+  static const ::greptime::v1::meta::ProcedureId& pid(const DdlTaskResponse* msg);
+  static const ::greptime::v1::meta::TableId& table_id(const DdlTaskResponse* msg);
 };
 
 const ::greptime::v1::meta::ResponseHeader&
-SubmitDdlTaskResponse::_Internal::header(const SubmitDdlTaskResponse* msg) {
+DdlTaskResponse::_Internal::header(const DdlTaskResponse* msg) {
   return *msg->_impl_.header_;
 }
+const ::greptime::v1::meta::ProcedureId&
+DdlTaskResponse::_Internal::pid(const DdlTaskResponse* msg) {
+  return *msg->_impl_.pid_;
+}
 const ::greptime::v1::meta::TableId&
-SubmitDdlTaskResponse::_Internal::table_id(const SubmitDdlTaskResponse* msg) {
+DdlTaskResponse::_Internal::table_id(const DdlTaskResponse* msg) {
   return *msg->_impl_.table_id_;
 }
-void SubmitDdlTaskResponse::clear_header() {
+void DdlTaskResponse::clear_header() {
   if (GetArenaForAllocation() == nullptr && _impl_.header_ != nullptr) {
     delete _impl_.header_;
   }
   _impl_.header_ = nullptr;
 }
-void SubmitDdlTaskResponse::clear_table_id() {
+void DdlTaskResponse::clear_pid() {
+  if (GetArenaForAllocation() == nullptr && _impl_.pid_ != nullptr) {
+    delete _impl_.pid_;
+  }
+  _impl_.pid_ = nullptr;
+}
+void DdlTaskResponse::clear_table_id() {
   if (GetArenaForAllocation() == nullptr && _impl_.table_id_ != nullptr) {
     delete _impl_.table_id_;
   }
   _impl_.table_id_ = nullptr;
 }
-void SubmitDdlTaskResponse::clear_table_ids() {
+void DdlTaskResponse::clear_table_ids() {
   _impl_.table_ids_.Clear();
 }
-SubmitDdlTaskResponse::SubmitDdlTaskResponse(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+DdlTaskResponse::DdlTaskResponse(::PROTOBUF_NAMESPACE_ID::Arena* arena,
                          bool is_message_owned)
   : ::PROTOBUF_NAMESPACE_ID::Message(arena, is_message_owned) {
   SharedCtor(arena, is_message_owned);
-  // @@protoc_insertion_point(arena_constructor:greptime.v1.meta.SubmitDdlTaskResponse)
+  // @@protoc_insertion_point(arena_constructor:greptime.v1.meta.DdlTaskResponse)
 }
-SubmitDdlTaskResponse::SubmitDdlTaskResponse(const SubmitDdlTaskResponse& from)
+DdlTaskResponse::DdlTaskResponse(const DdlTaskResponse& from)
   : ::PROTOBUF_NAMESPACE_ID::Message() {
-  SubmitDdlTaskResponse* const _this = this; (void)_this;
+  DdlTaskResponse* const _this = this; (void)_this;
   new (&_impl_) Impl_{
       decltype(_impl_.table_ids_){from._impl_.table_ids_}
-    , decltype(_impl_.key_){}
     , decltype(_impl_.header_){nullptr}
+    , decltype(_impl_.pid_){nullptr}
     , decltype(_impl_.table_id_){nullptr}
     , /*decltype(_impl_._cached_size_)*/{}};
 
   _internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
-  _impl_.key_.InitDefault();
-  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-    _impl_.key_.Set("", GetArenaForAllocation());
-  #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  if (!from._internal_key().empty()) {
-    _this->_impl_.key_.Set(from._internal_key(), 
-      _this->GetArenaForAllocation());
-  }
   if (from._internal_has_header()) {
     _this->_impl_.header_ = new ::greptime::v1::meta::ResponseHeader(*from._impl_.header_);
   }
+  if (from._internal_has_pid()) {
+    _this->_impl_.pid_ = new ::greptime::v1::meta::ProcedureId(*from._impl_.pid_);
+  }
   if (from._internal_has_table_id()) {
     _this->_impl_.table_id_ = new ::greptime::v1::meta::TableId(*from._impl_.table_id_);
   }
-  // @@protoc_insertion_point(copy_constructor:greptime.v1.meta.SubmitDdlTaskResponse)
+  // @@protoc_insertion_point(copy_constructor:greptime.v1.meta.DdlTaskResponse)
 }
 
-inline void SubmitDdlTaskResponse::SharedCtor(
+inline void DdlTaskResponse::SharedCtor(
     ::_pb::Arena* arena, bool is_message_owned) {
   (void)arena;
   (void)is_message_owned;
   new (&_impl_) Impl_{
       decltype(_impl_.table_ids_){arena}
-    , decltype(_impl_.key_){}
     , decltype(_impl_.header_){nullptr}
+    , decltype(_impl_.pid_){nullptr}
     , decltype(_impl_.table_id_){nullptr}
     , /*decltype(_impl_._cached_size_)*/{}
   };
-  _impl_.key_.InitDefault();
-  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-    _impl_.key_.Set("", GetArenaForAllocation());
-  #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
 }
 
-SubmitDdlTaskResponse::~SubmitDdlTaskResponse() {
+DdlTaskResponse::~DdlTaskResponse() {
-  // @@protoc_insertion_point(destructor:greptime.v1.meta.SubmitDdlTaskResponse)
+  // @@protoc_insertion_point(destructor:greptime.v1.meta.DdlTaskResponse)
   if (auto *arena = _internal_metadata_.DeleteReturnArena<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>()) {
   (void)arena;
     return;
@@ -2506,30 +2505,33 @@ SubmitDdlTaskResponse::~SubmitDdlTaskResponse() {
   SharedDtor();
 }
 
-inline void SubmitDdlTaskResponse::SharedDtor() {
+inline void DdlTaskResponse::SharedDtor() {
   GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
   _impl_.table_ids_.~RepeatedPtrField();
-  _impl_.key_.Destroy();
   if (this != internal_default_instance()) delete _impl_.header_;
+  if (this != internal_default_instance()) delete _impl_.pid_;
   if (this != internal_default_instance()) delete _impl_.table_id_;
 }
 
-void SubmitDdlTaskResponse::SetCachedSize(int size) const {
+void DdlTaskResponse::SetCachedSize(int size) const {
   _impl_._cached_size_.Set(size);
 }
 
-void SubmitDdlTaskResponse::Clear() {
+void DdlTaskResponse::Clear() {
-// @@protoc_insertion_point(message_clear_start:greptime.v1.meta.SubmitDdlTaskResponse)
+// @@protoc_insertion_point(message_clear_start:greptime.v1.meta.DdlTaskResponse)
   uint32_t cached_has_bits = 0;
   // Prevent compiler warnings about cached_has_bits being unused
   (void) cached_has_bits;
 
   _impl_.table_ids_.Clear();
-  _impl_.key_.ClearToEmpty();
   if (GetArenaForAllocation() == nullptr && _impl_.header_ != nullptr) {
     delete _impl_.header_;
   }
   _impl_.header_ = nullptr;
+  if (GetArenaForAllocation() == nullptr && _impl_.pid_ != nullptr) {
+    delete _impl_.pid_;
+  }
+  _impl_.pid_ = nullptr;
   if (GetArenaForAllocation() == nullptr && _impl_.table_id_ != nullptr) {
     delete _impl_.table_id_;
   }
@@ -2537,7 +2539,7 @@ void SubmitDdlTaskResponse::Clear() {
   _internal_metadata_.Clear<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>();
 }
 
-const char* SubmitDdlTaskResponse::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx) {
+const char* DdlTaskResponse::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx) {
 #define CHK_(x) if (PROTOBUF_PREDICT_FALSE(!(x))) goto failure
   while (!ctx->Done(&ptr)) {
     uint32_t tag;
@@ -2551,11 +2553,10 @@ const char* SubmitDdlTaskResponse::_InternalParse(const char* ptr, ::_pbi::Parse
         } else
           goto handle_unusual;
         continue;
-      // bytes key = 2;
+      // .greptime.v1.meta.ProcedureId pid = 2;
       case 2:
         if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 18)) {
-          auto str = _internal_mutable_key();
+          ptr = ctx->ParseMessage(_internal_mutable_pid(), ptr);
-          ptr = ::_pbi::InlineGreedyStringParser(str, ptr, ctx);
           CHK_(ptr);
         } else
           goto handle_unusual;
@@ -2604,9 +2605,9 @@ failure:
 #undef CHK_
 }
 
-uint8_t* SubmitDdlTaskResponse::_InternalSerialize(
+uint8_t* DdlTaskResponse::_InternalSerialize(
     uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const {
-  // @@protoc_insertion_point(serialize_to_array_start:greptime.v1.meta.SubmitDdlTaskResponse)
+  // @@protoc_insertion_point(serialize_to_array_start:greptime.v1.meta.DdlTaskResponse)
   uint32_t cached_has_bits = 0;
   (void) cached_has_bits;
 
@@ -2617,10 +2618,11 @@ uint8_t* SubmitDdlTaskResponse::_InternalSerialize(
         _Internal::header(this).GetCachedSize(), target, stream);
   }
 
-  // bytes key = 2;
+  // .greptime.v1.meta.ProcedureId pid = 2;
-  if (!this->_internal_key().empty()) {
+  if (this->_internal_has_pid()) {
-    target = stream->WriteBytesMaybeAliased(
+    target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
-        2, this->_internal_key(), target);
+      InternalWriteMessage(2, _Internal::pid(this),
+        _Internal::pid(this).GetCachedSize(), target, stream);
   }
 
   // .greptime.v1.meta.TableId table_id = 4;
@@ -2642,12 +2644,12 @@ uint8_t* SubmitDdlTaskResponse::_InternalSerialize(
     target = ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
         _internal_metadata_.unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(::PROTOBUF_NAMESPACE_ID::UnknownFieldSet::default_instance), target, stream);
   }
-  // @@protoc_insertion_point(serialize_to_array_end:greptime.v1.meta.SubmitDdlTaskResponse)
+  // @@protoc_insertion_point(serialize_to_array_end:greptime.v1.meta.DdlTaskResponse)
   return target;
 }
 
-size_t SubmitDdlTaskResponse::ByteSizeLong() const {
+size_t DdlTaskResponse::ByteSizeLong() const {
-// @@protoc_insertion_point(message_byte_size_start:greptime.v1.meta.SubmitDdlTaskResponse)
+// @@protoc_insertion_point(message_byte_size_start:greptime.v1.meta.DdlTaskResponse)
   size_t total_size = 0;
 
   uint32_t cached_has_bits = 0;
@@ -2661,13 +2663,6 @@ size_t SubmitDdlTaskResponse::ByteSizeLong() const {
       ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(msg);
   }
 
-  // bytes key = 2;
-  if (!this->_internal_key().empty()) {
-    total_size += 1 +
-      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::BytesSize(
-        this->_internal_key());
-  }
-
   // .greptime.v1.meta.ResponseHeader header = 1;
   if (this->_internal_has_header()) {
     total_size += 1 +
@@ -2675,6 +2670,13 @@ size_t SubmitDdlTaskResponse::ByteSizeLong() const {
         *_impl_.header_);
   }
 
+  // .greptime.v1.meta.ProcedureId pid = 2;
+  if (this->_internal_has_pid()) {
+    total_size += 1 +
+      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(
+        *_impl_.pid_);
+  }
+
   // .greptime.v1.meta.TableId table_id = 4;
   if (this->_internal_has_table_id()) {
     total_size += 1 +
@@ -2685,29 +2687,30 @@ size_t SubmitDdlTaskResponse::ByteSizeLong() const {
   return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
 }
 
-const ::PROTOBUF_NAMESPACE_ID::Message::ClassData SubmitDdlTaskResponse::_class_data_ = {
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData DdlTaskResponse::_class_data_ = {
     ::PROTOBUF_NAMESPACE_ID::Message::CopyWithSourceCheck,
-    SubmitDdlTaskResponse::MergeImpl
+    DdlTaskResponse::MergeImpl
 };
-const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*SubmitDdlTaskResponse::GetClassData() const { return &_class_data_; }
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*DdlTaskResponse::GetClassData() const { return &_class_data_; }
 
 
-void SubmitDdlTaskResponse::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg) {
+void DdlTaskResponse::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg) {
-  auto* const _this = static_cast<SubmitDdlTaskResponse*>(&to_msg);
+  auto* const _this = static_cast<DdlTaskResponse*>(&to_msg);
-  auto& from = static_cast<const SubmitDdlTaskResponse&>(from_msg);
+  auto& from = static_cast<const DdlTaskResponse&>(from_msg);
-  // @@protoc_insertion_point(class_specific_merge_from_start:greptime.v1.meta.SubmitDdlTaskResponse)
+  // @@protoc_insertion_point(class_specific_merge_from_start:greptime.v1.meta.DdlTaskResponse)
   GOOGLE_DCHECK_NE(&from, _this);
   uint32_t cached_has_bits = 0;
   (void) cached_has_bits;
 
   _this->_impl_.table_ids_.MergeFrom(from._impl_.table_ids_);
-  if (!from._internal_key().empty()) {
-    _this->_internal_set_key(from._internal_key());
-  }
   if (from._internal_has_header()) {
     _this->_internal_mutable_header()->::greptime::v1::meta::ResponseHeader::MergeFrom(
         from._internal_header());
   }
+  if (from._internal_has_pid()) {
+    _this->_internal_mutable_pid()->::greptime::v1::meta::ProcedureId::MergeFrom(
+        from._internal_pid());
+  }
   if (from._internal_has_table_id()) {
     _this->_internal_mutable_table_id()->::greptime::v1::meta::TableId::MergeFrom(
         from._internal_table_id());
@@ -2715,36 +2718,30 @@ void SubmitDdlTaskResponse::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg,
   _this->_internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
 }
 
-void SubmitDdlTaskResponse::CopyFrom(const SubmitDdlTaskResponse& from) {
+void DdlTaskResponse::CopyFrom(const DdlTaskResponse& from) {
-// @@protoc_insertion_point(class_specific_copy_from_start:greptime.v1.meta.SubmitDdlTaskResponse)
+// @@protoc_insertion_point(class_specific_copy_from_start:greptime.v1.meta.DdlTaskResponse)
   if (&from == this) return;
   Clear();
   MergeFrom(from);
 }
 
-bool SubmitDdlTaskResponse::IsInitialized() const {
+bool DdlTaskResponse::IsInitialized() const {
   return true;
 }
 
-void SubmitDdlTaskResponse::InternalSwap(SubmitDdlTaskResponse* other) {
+void DdlTaskResponse::InternalSwap(DdlTaskResponse* other) {
   using std::swap;
-  auto* lhs_arena = GetArenaForAllocation();
-  auto* rhs_arena = other->GetArenaForAllocation();
   _internal_metadata_.InternalSwap(&other->_internal_metadata_);
   _impl_.table_ids_.InternalSwap(&other->_impl_.table_ids_);
-  ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::InternalSwap(
-      &_impl_.key_, lhs_arena,
-      &other->_impl_.key_, rhs_arena
-  );
   ::PROTOBUF_NAMESPACE_ID::internal::memswap<
-      PROTOBUF_FIELD_OFFSET(SubmitDdlTaskResponse, _impl_.table_id_)
+      PROTOBUF_FIELD_OFFSET(DdlTaskResponse, _impl_.table_id_)
-      + sizeof(SubmitDdlTaskResponse::_impl_.table_id_)
+      + sizeof(DdlTaskResponse::_impl_.table_id_)
-      - PROTOBUF_FIELD_OFFSET(SubmitDdlTaskResponse, _impl_.header_)>(
+      - PROTOBUF_FIELD_OFFSET(DdlTaskResponse, _impl_.header_)>(
           reinterpret_cast<char*>(&_impl_.header_),
           reinterpret_cast<char*>(&other->_impl_.header_));
 }
 
-::PROTOBUF_NAMESPACE_ID::Metadata SubmitDdlTaskResponse::GetMetadata() const {
+::PROTOBUF_NAMESPACE_ID::Metadata DdlTaskResponse::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_once,
       file_level_metadata_greptime_2fv1_2fmeta_2fddl_2eproto[8]);
@@ -2783,13 +2780,13 @@ template<> PROTOBUF_NOINLINE ::greptime::v1::meta::TruncateTableTask*
 Arena::CreateMaybeMessage< ::greptime::v1::meta::TruncateTableTask >(Arena* arena) {
   return Arena::CreateMessageInternal< ::greptime::v1::meta::TruncateTableTask >(arena);
 }
-template<> PROTOBUF_NOINLINE ::greptime::v1::meta::SubmitDdlTaskRequest*
+template<> PROTOBUF_NOINLINE ::greptime::v1::meta::DdlTaskRequest*
-Arena::CreateMaybeMessage< ::greptime::v1::meta::SubmitDdlTaskRequest >(Arena* arena) {
+Arena::CreateMaybeMessage< ::greptime::v1::meta::DdlTaskRequest >(Arena* arena) {
-  return Arena::CreateMessageInternal< ::greptime::v1::meta::SubmitDdlTaskRequest >(arena);
+  return Arena::CreateMessageInternal< ::greptime::v1::meta::DdlTaskRequest >(arena);
 }
-template<> PROTOBUF_NOINLINE ::greptime::v1::meta::SubmitDdlTaskResponse*
+template<> PROTOBUF_NOINLINE ::greptime::v1::meta::DdlTaskResponse*
-Arena::CreateMaybeMessage< ::greptime::v1::meta::SubmitDdlTaskResponse >(Arena* arena) {
+Arena::CreateMaybeMessage< ::greptime::v1::meta::DdlTaskResponse >(Arena* arena) {
-  return Arena::CreateMessageInternal< ::greptime::v1::meta::SubmitDdlTaskResponse >(arena);
+  return Arena::CreateMessageInternal< ::greptime::v1::meta::DdlTaskResponse >(arena);
 }
 PROTOBUF_NAMESPACE_CLOSE
 

c++/greptime/v1/meta/procedure.grpc.pb.cc

@@ -0,0 +1,174 @@
+// Generated by the gRPC C++ plugin.
+// If you make any local change, they will be lost.
+// source: greptime/v1/meta/procedure.proto
+
+#include "greptime/v1/meta/procedure.pb.h"
+#include "greptime/v1/meta/procedure.grpc.pb.h"
+
+#include <functional>
+#include <grpcpp/support/async_stream.h>
+#include <grpcpp/support/async_unary_call.h>
+#include <grpcpp/impl/channel_interface.h>
+#include <grpcpp/impl/client_unary_call.h>
+#include <grpcpp/support/client_callback.h>
+#include <grpcpp/support/message_allocator.h>
+#include <grpcpp/support/method_handler.h>
+#include <grpcpp/impl/rpc_service_method.h>
+#include <grpcpp/support/server_callback.h>
+#include <grpcpp/impl/codegen/server_callback_handlers.h>
+#include <grpcpp/server_context.h>
+#include <grpcpp/impl/service_type.h>
+#include <grpcpp/support/sync_stream.h>
+namespace greptime {
+namespace v1 {
+namespace meta {
+
+static const char* ProcedureService_method_names[] = {
+  "/greptime.v1.meta.ProcedureService/query",
+  "/greptime.v1.meta.ProcedureService/ddl",
+  "/greptime.v1.meta.ProcedureService/migrate",
+};
+
+std::unique_ptr< ProcedureService::Stub> ProcedureService::NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options) {
+  (void)options;
+  std::unique_ptr< ProcedureService::Stub> stub(new ProcedureService::Stub(channel, options));
+  return stub;
+}
+
+ProcedureService::Stub::Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options)
+  : channel_(channel), rpcmethod_query_(ProcedureService_method_names[0], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  , rpcmethod_ddl_(ProcedureService_method_names[1], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  , rpcmethod_migrate_(ProcedureService_method_names[2], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  {}
+
+::grpc::Status ProcedureService::Stub::query(::grpc::ClientContext* context, const ::greptime::v1::meta::QueryProcedureRequest& request, ::greptime::v1::meta::ProcedureStateResponse* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::greptime::v1::meta::QueryProcedureRequest, ::greptime::v1::meta::ProcedureStateResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_query_, context, request, response);
+}
+
+void ProcedureService::Stub::async::query(::grpc::ClientContext* context, const ::greptime::v1::meta::QueryProcedureRequest* request, ::greptime::v1::meta::ProcedureStateResponse* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::greptime::v1::meta::QueryProcedureRequest, ::greptime::v1::meta::ProcedureStateResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_query_, context, request, response, std::move(f));
+}
+
+void ProcedureService::Stub::async::query(::grpc::ClientContext* context, const ::greptime::v1::meta::QueryProcedureRequest* request, ::greptime::v1::meta::ProcedureStateResponse* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_query_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::ProcedureStateResponse>* ProcedureService::Stub::PrepareAsyncqueryRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::QueryProcedureRequest& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::greptime::v1::meta::ProcedureStateResponse, ::greptime::v1::meta::QueryProcedureRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_query_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::ProcedureStateResponse>* ProcedureService::Stub::AsyncqueryRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::QueryProcedureRequest& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncqueryRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+::grpc::Status ProcedureService::Stub::ddl(::grpc::ClientContext* context, const ::greptime::v1::meta::DdlTaskRequest& request, ::greptime::v1::meta::DdlTaskResponse* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::greptime::v1::meta::DdlTaskRequest, ::greptime::v1::meta::DdlTaskResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_ddl_, context, request, response);
+}
+
+void ProcedureService::Stub::async::ddl(::grpc::ClientContext* context, const ::greptime::v1::meta::DdlTaskRequest* request, ::greptime::v1::meta::DdlTaskResponse* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::greptime::v1::meta::DdlTaskRequest, ::greptime::v1::meta::DdlTaskResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_ddl_, context, request, response, std::move(f));
+}
+
+void ProcedureService::Stub::async::ddl(::grpc::ClientContext* context, const ::greptime::v1::meta::DdlTaskRequest* request, ::greptime::v1::meta::DdlTaskResponse* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_ddl_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::DdlTaskResponse>* ProcedureService::Stub::PrepareAsyncddlRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::DdlTaskRequest& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::greptime::v1::meta::DdlTaskResponse, ::greptime::v1::meta::DdlTaskRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_ddl_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::DdlTaskResponse>* ProcedureService::Stub::AsyncddlRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::DdlTaskRequest& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncddlRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+::grpc::Status ProcedureService::Stub::migrate(::grpc::ClientContext* context, const ::greptime::v1::meta::MigrateRegionRequest& request, ::greptime::v1::meta::MigrateRegionResponse* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::greptime::v1::meta::MigrateRegionRequest, ::greptime::v1::meta::MigrateRegionResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_migrate_, context, request, response);
+}
+
+void ProcedureService::Stub::async::migrate(::grpc::ClientContext* context, const ::greptime::v1::meta::MigrateRegionRequest* request, ::greptime::v1::meta::MigrateRegionResponse* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::greptime::v1::meta::MigrateRegionRequest, ::greptime::v1::meta::MigrateRegionResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_migrate_, context, request, response, std::move(f));
+}
+
+void ProcedureService::Stub::async::migrate(::grpc::ClientContext* context, const ::greptime::v1::meta::MigrateRegionRequest* request, ::greptime::v1::meta::MigrateRegionResponse* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_migrate_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::MigrateRegionResponse>* ProcedureService::Stub::PrepareAsyncmigrateRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::MigrateRegionRequest& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::greptime::v1::meta::MigrateRegionResponse, ::greptime::v1::meta::MigrateRegionRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_migrate_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::MigrateRegionResponse>* ProcedureService::Stub::AsyncmigrateRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::MigrateRegionRequest& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncmigrateRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+ProcedureService::Service::Service() {
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      ProcedureService_method_names[0],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< ProcedureService::Service, ::greptime::v1::meta::QueryProcedureRequest, ::greptime::v1::meta::ProcedureStateResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](ProcedureService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::greptime::v1::meta::QueryProcedureRequest* req,
+             ::greptime::v1::meta::ProcedureStateResponse* resp) {
+               return service->query(ctx, req, resp);
+             }, this)));
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      ProcedureService_method_names[1],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< ProcedureService::Service, ::greptime::v1::meta::DdlTaskRequest, ::greptime::v1::meta::DdlTaskResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](ProcedureService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::greptime::v1::meta::DdlTaskRequest* req,
+             ::greptime::v1::meta::DdlTaskResponse* resp) {
+               return service->ddl(ctx, req, resp);
+             }, this)));
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      ProcedureService_method_names[2],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< ProcedureService::Service, ::greptime::v1::meta::MigrateRegionRequest, ::greptime::v1::meta::MigrateRegionResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](ProcedureService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::greptime::v1::meta::MigrateRegionRequest* req,
+             ::greptime::v1::meta::MigrateRegionResponse* resp) {
+               return service->migrate(ctx, req, resp);
+             }, this)));
+}
+
+ProcedureService::Service::~Service() {
+}
+
+::grpc::Status ProcedureService::Service::query(::grpc::ServerContext* context, const ::greptime::v1::meta::QueryProcedureRequest* request, ::greptime::v1::meta::ProcedureStateResponse* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+::grpc::Status ProcedureService::Service::ddl(::grpc::ServerContext* context, const ::greptime::v1::meta::DdlTaskRequest* request, ::greptime::v1::meta::DdlTaskResponse* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+::grpc::Status ProcedureService::Service::migrate(::grpc::ServerContext* context, const ::greptime::v1::meta::MigrateRegionRequest* request, ::greptime::v1::meta::MigrateRegionResponse* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+
+}  // namespace greptime
+}  // namespace v1
+}  // namespace meta
+

c++/greptime/v1/meta/procedure.grpc.pb.h

@@ -0,0 +1,572 @@
+// Generated by the gRPC C++ plugin.
+// If you make any local change, they will be lost.
+// source: greptime/v1/meta/procedure.proto
+// Original file comments:
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+#ifndef GRPC_greptime_2fv1_2fmeta_2fprocedure_2eproto__INCLUDED
+#define GRPC_greptime_2fv1_2fmeta_2fprocedure_2eproto__INCLUDED
+
+#include "greptime/v1/meta/procedure.pb.h"
+
+#include <functional>
+#include <grpcpp/generic/async_generic_service.h>
+#include <grpcpp/support/async_stream.h>
+#include <grpcpp/support/async_unary_call.h>
+#include <grpcpp/support/client_callback.h>
+#include <grpcpp/client_context.h>
+#include <grpcpp/completion_queue.h>
+#include <grpcpp/support/message_allocator.h>
+#include <grpcpp/support/method_handler.h>
+#include <grpcpp/impl/codegen/proto_utils.h>
+#include <grpcpp/impl/rpc_method.h>
+#include <grpcpp/support/server_callback.h>
+#include <grpcpp/impl/codegen/server_callback_handlers.h>
+#include <grpcpp/server_context.h>
+#include <grpcpp/impl/service_type.h>
+#include <grpcpp/impl/codegen/status.h>
+#include <grpcpp/support/stub_options.h>
+#include <grpcpp/support/sync_stream.h>
+
+namespace greptime {
+namespace v1 {
+namespace meta {
+
+class ProcedureService final {
+ public:
+  static constexpr char const* service_full_name() {
+    return "greptime.v1.meta.ProcedureService";
+  }
+  class StubInterface {
+   public:
+    virtual ~StubInterface() {}
+    // Query a submitted procedure state
+    virtual ::grpc::Status query(::grpc::ClientContext* context, const ::greptime::v1::meta::QueryProcedureRequest& request, ::greptime::v1::meta::ProcedureStateResponse* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::ProcedureStateResponse>> Asyncquery(::grpc::ClientContext* context, const ::greptime::v1::meta::QueryProcedureRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::ProcedureStateResponse>>(AsyncqueryRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::ProcedureStateResponse>> PrepareAsyncquery(::grpc::ClientContext* context, const ::greptime::v1::meta::QueryProcedureRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::ProcedureStateResponse>>(PrepareAsyncqueryRaw(context, request, cq));
+    }
+    // Submits a DDL task
+    virtual ::grpc::Status ddl(::grpc::ClientContext* context, const ::greptime::v1::meta::DdlTaskRequest& request, ::greptime::v1::meta::DdlTaskResponse* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::DdlTaskResponse>> Asyncddl(::grpc::ClientContext* context, const ::greptime::v1::meta::DdlTaskRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::DdlTaskResponse>>(AsyncddlRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::DdlTaskResponse>> PrepareAsyncddl(::grpc::ClientContext* context, const ::greptime::v1::meta::DdlTaskRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::DdlTaskResponse>>(PrepareAsyncddlRaw(context, request, cq));
+    }
+    // Submits a region migration task
+    virtual ::grpc::Status migrate(::grpc::ClientContext* context, const ::greptime::v1::meta::MigrateRegionRequest& request, ::greptime::v1::meta::MigrateRegionResponse* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::MigrateRegionResponse>> Asyncmigrate(::grpc::ClientContext* context, const ::greptime::v1::meta::MigrateRegionRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::MigrateRegionResponse>>(AsyncmigrateRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::MigrateRegionResponse>> PrepareAsyncmigrate(::grpc::ClientContext* context, const ::greptime::v1::meta::MigrateRegionRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::MigrateRegionResponse>>(PrepareAsyncmigrateRaw(context, request, cq));
+    }
+    class async_interface {
+     public:
+      virtual ~async_interface() {}
+      // Query a submitted procedure state
+      virtual void query(::grpc::ClientContext* context, const ::greptime::v1::meta::QueryProcedureRequest* request, ::greptime::v1::meta::ProcedureStateResponse* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void query(::grpc::ClientContext* context, const ::greptime::v1::meta::QueryProcedureRequest* request, ::greptime::v1::meta::ProcedureStateResponse* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+      // Submits a DDL task
+      virtual void ddl(::grpc::ClientContext* context, const ::greptime::v1::meta::DdlTaskRequest* request, ::greptime::v1::meta::DdlTaskResponse* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void ddl(::grpc::ClientContext* context, const ::greptime::v1::meta::DdlTaskRequest* request, ::greptime::v1::meta::DdlTaskResponse* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+      // Submits a region migration task
+      virtual void migrate(::grpc::ClientContext* context, const ::greptime::v1::meta::MigrateRegionRequest* request, ::greptime::v1::meta::MigrateRegionResponse* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void migrate(::grpc::ClientContext* context, const ::greptime::v1::meta::MigrateRegionRequest* request, ::greptime::v1::meta::MigrateRegionResponse* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+    };
+    typedef class async_interface experimental_async_interface;
+    virtual class async_interface* async() { return nullptr; }
+    class async_interface* experimental_async() { return async(); }
+   private:
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::ProcedureStateResponse>* AsyncqueryRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::QueryProcedureRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::ProcedureStateResponse>* PrepareAsyncqueryRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::QueryProcedureRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::DdlTaskResponse>* AsyncddlRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::DdlTaskRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::DdlTaskResponse>* PrepareAsyncddlRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::DdlTaskRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::MigrateRegionResponse>* AsyncmigrateRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::MigrateRegionRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::greptime::v1::meta::MigrateRegionResponse>* PrepareAsyncmigrateRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::MigrateRegionRequest& request, ::grpc::CompletionQueue* cq) = 0;
+  };
+  class Stub final : public StubInterface {
+   public:
+    Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+    ::grpc::Status query(::grpc::ClientContext* context, const ::greptime::v1::meta::QueryProcedureRequest& request, ::greptime::v1::meta::ProcedureStateResponse* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::ProcedureStateResponse>> Asyncquery(::grpc::ClientContext* context, const ::greptime::v1::meta::QueryProcedureRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::ProcedureStateResponse>>(AsyncqueryRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::ProcedureStateResponse>> PrepareAsyncquery(::grpc::ClientContext* context, const ::greptime::v1::meta::QueryProcedureRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::ProcedureStateResponse>>(PrepareAsyncqueryRaw(context, request, cq));
+    }
+    ::grpc::Status ddl(::grpc::ClientContext* context, const ::greptime::v1::meta::DdlTaskRequest& request, ::greptime::v1::meta::DdlTaskResponse* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::DdlTaskResponse>> Asyncddl(::grpc::ClientContext* context, const ::greptime::v1::meta::DdlTaskRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::DdlTaskResponse>>(AsyncddlRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::DdlTaskResponse>> PrepareAsyncddl(::grpc::ClientContext* context, const ::greptime::v1::meta::DdlTaskRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::DdlTaskResponse>>(PrepareAsyncddlRaw(context, request, cq));
+    }
+    ::grpc::Status migrate(::grpc::ClientContext* context, const ::greptime::v1::meta::MigrateRegionRequest& request, ::greptime::v1::meta::MigrateRegionResponse* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::MigrateRegionResponse>> Asyncmigrate(::grpc::ClientContext* context, const ::greptime::v1::meta::MigrateRegionRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::MigrateRegionResponse>>(AsyncmigrateRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::MigrateRegionResponse>> PrepareAsyncmigrate(::grpc::ClientContext* context, const ::greptime::v1::meta::MigrateRegionRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::MigrateRegionResponse>>(PrepareAsyncmigrateRaw(context, request, cq));
+    }
+    class async final :
+      public StubInterface::async_interface {
+     public:
+      void query(::grpc::ClientContext* context, const ::greptime::v1::meta::QueryProcedureRequest* request, ::greptime::v1::meta::ProcedureStateResponse* response, std::function<void(::grpc::Status)>) override;
+      void query(::grpc::ClientContext* context, const ::greptime::v1::meta::QueryProcedureRequest* request, ::greptime::v1::meta::ProcedureStateResponse* response, ::grpc::ClientUnaryReactor* reactor) override;
+      void ddl(::grpc::ClientContext* context, const ::greptime::v1::meta::DdlTaskRequest* request, ::greptime::v1::meta::DdlTaskResponse* response, std::function<void(::grpc::Status)>) override;
+      void ddl(::grpc::ClientContext* context, const ::greptime::v1::meta::DdlTaskRequest* request, ::greptime::v1::meta::DdlTaskResponse* response, ::grpc::ClientUnaryReactor* reactor) override;
+      void migrate(::grpc::ClientContext* context, const ::greptime::v1::meta::MigrateRegionRequest* request, ::greptime::v1::meta::MigrateRegionResponse* response, std::function<void(::grpc::Status)>) override;
+      void migrate(::grpc::ClientContext* context, const ::greptime::v1::meta::MigrateRegionRequest* request, ::greptime::v1::meta::MigrateRegionResponse* response, ::grpc::ClientUnaryReactor* reactor) override;
+     private:
+      friend class Stub;
+      explicit async(Stub* stub): stub_(stub) { }
+      Stub* stub() { return stub_; }
+      Stub* stub_;
+    };
+    class async* async() override { return &async_stub_; }
+
+   private:
+    std::shared_ptr< ::grpc::ChannelInterface> channel_;
+    class async async_stub_{this};
+    ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::ProcedureStateResponse>* AsyncqueryRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::QueryProcedureRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::ProcedureStateResponse>* PrepareAsyncqueryRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::QueryProcedureRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::DdlTaskResponse>* AsyncddlRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::DdlTaskRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::DdlTaskResponse>* PrepareAsyncddlRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::DdlTaskRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::MigrateRegionResponse>* AsyncmigrateRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::MigrateRegionRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::greptime::v1::meta::MigrateRegionResponse>* PrepareAsyncmigrateRaw(::grpc::ClientContext* context, const ::greptime::v1::meta::MigrateRegionRequest& request, ::grpc::CompletionQueue* cq) override;
+    const ::grpc::internal::RpcMethod rpcmethod_query_;
+    const ::grpc::internal::RpcMethod rpcmethod_ddl_;
+    const ::grpc::internal::RpcMethod rpcmethod_migrate_;
+  };
+  static std::unique_ptr<Stub> NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+
+  class Service : public ::grpc::Service {
+   public:
+    Service();
+    virtual ~Service();
+    // Query a submitted procedure state
+    virtual ::grpc::Status query(::grpc::ServerContext* context, const ::greptime::v1::meta::QueryProcedureRequest* request, ::greptime::v1::meta::ProcedureStateResponse* response);
+    // Submits a DDL task
+    virtual ::grpc::Status ddl(::grpc::ServerContext* context, const ::greptime::v1::meta::DdlTaskRequest* request, ::greptime::v1::meta::DdlTaskResponse* response);
+    // Submits a region migration task
+    virtual ::grpc::Status migrate(::grpc::ServerContext* context, const ::greptime::v1::meta::MigrateRegionRequest* request, ::greptime::v1::meta::MigrateRegionResponse* response);
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_query : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_query() {
+      ::grpc::Service::MarkMethodAsync(0);
+    }
+    ~WithAsyncMethod_query() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status query(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::QueryProcedureRequest* /*request*/, ::greptime::v1::meta::ProcedureStateResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void Requestquery(::grpc::ServerContext* context, ::greptime::v1::meta::QueryProcedureRequest* request, ::grpc::ServerAsyncResponseWriter< ::greptime::v1::meta::ProcedureStateResponse>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_ddl : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_ddl() {
+      ::grpc::Service::MarkMethodAsync(1);
+    }
+    ~WithAsyncMethod_ddl() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ddl(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::DdlTaskRequest* /*request*/, ::greptime::v1::meta::DdlTaskResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void Requestddl(::grpc::ServerContext* context, ::greptime::v1::meta::DdlTaskRequest* request, ::grpc::ServerAsyncResponseWriter< ::greptime::v1::meta::DdlTaskResponse>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(1, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_migrate : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_migrate() {
+      ::grpc::Service::MarkMethodAsync(2);
+    }
+    ~WithAsyncMethod_migrate() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status migrate(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::MigrateRegionRequest* /*request*/, ::greptime::v1::meta::MigrateRegionResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void Requestmigrate(::grpc::ServerContext* context, ::greptime::v1::meta::MigrateRegionRequest* request, ::grpc::ServerAsyncResponseWriter< ::greptime::v1::meta::MigrateRegionResponse>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(2, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  typedef WithAsyncMethod_query<WithAsyncMethod_ddl<WithAsyncMethod_migrate<Service > > > AsyncService;
+  template <class BaseClass>
+  class WithCallbackMethod_query : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_query() {
+      ::grpc::Service::MarkMethodCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::greptime::v1::meta::QueryProcedureRequest, ::greptime::v1::meta::ProcedureStateResponse>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::greptime::v1::meta::QueryProcedureRequest* request, ::greptime::v1::meta::ProcedureStateResponse* response) { return this->query(context, request, response); }));}
+    void SetMessageAllocatorFor_query(
+        ::grpc::MessageAllocator< ::greptime::v1::meta::QueryProcedureRequest, ::greptime::v1::meta::ProcedureStateResponse>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(0);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::greptime::v1::meta::QueryProcedureRequest, ::greptime::v1::meta::ProcedureStateResponse>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_query() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status query(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::QueryProcedureRequest* /*request*/, ::greptime::v1::meta::ProcedureStateResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* query(
+      ::grpc::CallbackServerContext* /*context*/, const ::greptime::v1::meta::QueryProcedureRequest* /*request*/, ::greptime::v1::meta::ProcedureStateResponse* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithCallbackMethod_ddl : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_ddl() {
+      ::grpc::Service::MarkMethodCallback(1,
+          new ::grpc::internal::CallbackUnaryHandler< ::greptime::v1::meta::DdlTaskRequest, ::greptime::v1::meta::DdlTaskResponse>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::greptime::v1::meta::DdlTaskRequest* request, ::greptime::v1::meta::DdlTaskResponse* response) { return this->ddl(context, request, response); }));}
+    void SetMessageAllocatorFor_ddl(
+        ::grpc::MessageAllocator< ::greptime::v1::meta::DdlTaskRequest, ::greptime::v1::meta::DdlTaskResponse>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(1);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::greptime::v1::meta::DdlTaskRequest, ::greptime::v1::meta::DdlTaskResponse>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_ddl() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ddl(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::DdlTaskRequest* /*request*/, ::greptime::v1::meta::DdlTaskResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* ddl(
+      ::grpc::CallbackServerContext* /*context*/, const ::greptime::v1::meta::DdlTaskRequest* /*request*/, ::greptime::v1::meta::DdlTaskResponse* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithCallbackMethod_migrate : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_migrate() {
+      ::grpc::Service::MarkMethodCallback(2,
+          new ::grpc::internal::CallbackUnaryHandler< ::greptime::v1::meta::MigrateRegionRequest, ::greptime::v1::meta::MigrateRegionResponse>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::greptime::v1::meta::MigrateRegionRequest* request, ::greptime::v1::meta::MigrateRegionResponse* response) { return this->migrate(context, request, response); }));}
+    void SetMessageAllocatorFor_migrate(
+        ::grpc::MessageAllocator< ::greptime::v1::meta::MigrateRegionRequest, ::greptime::v1::meta::MigrateRegionResponse>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(2);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::greptime::v1::meta::MigrateRegionRequest, ::greptime::v1::meta::MigrateRegionResponse>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_migrate() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status migrate(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::MigrateRegionRequest* /*request*/, ::greptime::v1::meta::MigrateRegionResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* migrate(
+      ::grpc::CallbackServerContext* /*context*/, const ::greptime::v1::meta::MigrateRegionRequest* /*request*/, ::greptime::v1::meta::MigrateRegionResponse* /*response*/)  { return nullptr; }
+  };
+  typedef WithCallbackMethod_query<WithCallbackMethod_ddl<WithCallbackMethod_migrate<Service > > > CallbackService;
+  typedef CallbackService ExperimentalCallbackService;
+  template <class BaseClass>
+  class WithGenericMethod_query : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_query() {
+      ::grpc::Service::MarkMethodGeneric(0);
+    }
+    ~WithGenericMethod_query() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status query(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::QueryProcedureRequest* /*request*/, ::greptime::v1::meta::ProcedureStateResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithGenericMethod_ddl : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_ddl() {
+      ::grpc::Service::MarkMethodGeneric(1);
+    }
+    ~WithGenericMethod_ddl() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ddl(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::DdlTaskRequest* /*request*/, ::greptime::v1::meta::DdlTaskResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithGenericMethod_migrate : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_migrate() {
+      ::grpc::Service::MarkMethodGeneric(2);
+    }
+    ~WithGenericMethod_migrate() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status migrate(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::MigrateRegionRequest* /*request*/, ::greptime::v1::meta::MigrateRegionResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_query : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_query() {
+      ::grpc::Service::MarkMethodRaw(0);
+    }
+    ~WithRawMethod_query() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status query(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::QueryProcedureRequest* /*request*/, ::greptime::v1::meta::ProcedureStateResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void Requestquery(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_ddl : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_ddl() {
+      ::grpc::Service::MarkMethodRaw(1);
+    }
+    ~WithRawMethod_ddl() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ddl(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::DdlTaskRequest* /*request*/, ::greptime::v1::meta::DdlTaskResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void Requestddl(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(1, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_migrate : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_migrate() {
+      ::grpc::Service::MarkMethodRaw(2);
+    }
+    ~WithRawMethod_migrate() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status migrate(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::MigrateRegionRequest* /*request*/, ::greptime::v1::meta::MigrateRegionResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void Requestmigrate(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(2, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_query : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_query() {
+      ::grpc::Service::MarkMethodRawCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->query(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_query() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status query(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::QueryProcedureRequest* /*request*/, ::greptime::v1::meta::ProcedureStateResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* query(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_ddl : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_ddl() {
+      ::grpc::Service::MarkMethodRawCallback(1,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->ddl(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_ddl() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ddl(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::DdlTaskRequest* /*request*/, ::greptime::v1::meta::DdlTaskResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* ddl(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_migrate : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_migrate() {
+      ::grpc::Service::MarkMethodRawCallback(2,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->migrate(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_migrate() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status migrate(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::MigrateRegionRequest* /*request*/, ::greptime::v1::meta::MigrateRegionResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* migrate(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_query : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_query() {
+      ::grpc::Service::MarkMethodStreamed(0,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::greptime::v1::meta::QueryProcedureRequest, ::greptime::v1::meta::ProcedureStateResponse>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::greptime::v1::meta::QueryProcedureRequest, ::greptime::v1::meta::ProcedureStateResponse>* streamer) {
+                       return this->Streamedquery(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_query() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status query(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::QueryProcedureRequest* /*request*/, ::greptime::v1::meta::ProcedureStateResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status Streamedquery(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::greptime::v1::meta::QueryProcedureRequest,::greptime::v1::meta::ProcedureStateResponse>* server_unary_streamer) = 0;
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_ddl : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_ddl() {
+      ::grpc::Service::MarkMethodStreamed(1,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::greptime::v1::meta::DdlTaskRequest, ::greptime::v1::meta::DdlTaskResponse>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::greptime::v1::meta::DdlTaskRequest, ::greptime::v1::meta::DdlTaskResponse>* streamer) {
+                       return this->Streamedddl(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_ddl() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status ddl(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::DdlTaskRequest* /*request*/, ::greptime::v1::meta::DdlTaskResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status Streamedddl(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::greptime::v1::meta::DdlTaskRequest,::greptime::v1::meta::DdlTaskResponse>* server_unary_streamer) = 0;
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_migrate : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_migrate() {
+      ::grpc::Service::MarkMethodStreamed(2,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::greptime::v1::meta::MigrateRegionRequest, ::greptime::v1::meta::MigrateRegionResponse>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::greptime::v1::meta::MigrateRegionRequest, ::greptime::v1::meta::MigrateRegionResponse>* streamer) {
+                       return this->Streamedmigrate(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_migrate() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status migrate(::grpc::ServerContext* /*context*/, const ::greptime::v1::meta::MigrateRegionRequest* /*request*/, ::greptime::v1::meta::MigrateRegionResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status Streamedmigrate(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::greptime::v1::meta::MigrateRegionRequest,::greptime::v1::meta::MigrateRegionResponse>* server_unary_streamer) = 0;
+  };
+  typedef WithStreamedUnaryMethod_query<WithStreamedUnaryMethod_ddl<WithStreamedUnaryMethod_migrate<Service > > > StreamedUnaryService;
+  typedef Service SplitStreamedService;
+  typedef WithStreamedUnaryMethod_query<WithStreamedUnaryMethod_ddl<WithStreamedUnaryMethod_migrate<Service > > > StreamedService;
+};
+
+}  // namespace meta
+}  // namespace v1
+}  // namespace greptime
+
+
+#endif  // GRPC_greptime_2fv1_2fmeta_2fprocedure_2eproto__INCLUDED

c++/greptime/v1/meta/procedure.pb.cc

@@ -0,0 +1,706 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: greptime/v1/meta/procedure.proto
+
+#include "greptime/v1/meta/procedure.pb.h"
+
+#include <algorithm>
+
+#include <google/protobuf/io/coded_stream.h>
+#include <google/protobuf/extension_set.h>
+#include <google/protobuf/wire_format_lite.h>
+#include <google/protobuf/descriptor.h>
+#include <google/protobuf/generated_message_reflection.h>
+#include <google/protobuf/reflection_ops.h>
+#include <google/protobuf/wire_format.h>
+// @@protoc_insertion_point(includes)
+#include <google/protobuf/port_def.inc>
+
+PROTOBUF_PRAGMA_INIT_SEG
+
+namespace _pb = ::PROTOBUF_NAMESPACE_ID;
+namespace _pbi = _pb::internal;
+
+namespace greptime {
+namespace v1 {
+namespace meta {
+PROTOBUF_CONSTEXPR QueryProcedureRequest::QueryProcedureRequest(
+    ::_pbi::ConstantInitialized): _impl_{
+    /*decltype(_impl_.header_)*/nullptr
+  , /*decltype(_impl_.pid_)*/nullptr
+  , /*decltype(_impl_._cached_size_)*/{}} {}
+struct QueryProcedureRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR QueryProcedureRequestDefaultTypeInternal()
+      : _instance(::_pbi::ConstantInitialized{}) {}
+  ~QueryProcedureRequestDefaultTypeInternal() {}
+  union {
+    QueryProcedureRequest _instance;
+  };
+};
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 QueryProcedureRequestDefaultTypeInternal _QueryProcedureRequest_default_instance_;
+PROTOBUF_CONSTEXPR ProcedureStateResponse::ProcedureStateResponse(
+    ::_pbi::ConstantInitialized): _impl_{
+    /*decltype(_impl_.error_)*/{&::_pbi::fixed_address_empty_string, ::_pbi::ConstantInitialized{}}
+  , /*decltype(_impl_.header_)*/nullptr
+  , /*decltype(_impl_.status_)*/0
+  , /*decltype(_impl_._cached_size_)*/{}} {}
+struct ProcedureStateResponseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR ProcedureStateResponseDefaultTypeInternal()
+      : _instance(::_pbi::ConstantInitialized{}) {}
+  ~ProcedureStateResponseDefaultTypeInternal() {}
+  union {
+    ProcedureStateResponse _instance;
+  };
+};
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ProcedureStateResponseDefaultTypeInternal _ProcedureStateResponse_default_instance_;
+}  // namespace meta
+}  // namespace v1
+}  // namespace greptime
+static ::_pb::Metadata file_level_metadata_greptime_2fv1_2fmeta_2fprocedure_2eproto[2];
+static const ::_pb::EnumDescriptor* file_level_enum_descriptors_greptime_2fv1_2fmeta_2fprocedure_2eproto[1];
+static constexpr ::_pb::ServiceDescriptor const** file_level_service_descriptors_greptime_2fv1_2fmeta_2fprocedure_2eproto = nullptr;
+
+const uint32_t TableStruct_greptime_2fv1_2fmeta_2fprocedure_2eproto::offsets[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
+  ~0u,  // no _has_bits_
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::QueryProcedureRequest, _internal_metadata_),
+  ~0u,  // no _extensions_
+  ~0u,  // no _oneof_case_
+  ~0u,  // no _weak_field_map_
+  ~0u,  // no _inlined_string_donated_
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::QueryProcedureRequest, _impl_.header_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::QueryProcedureRequest, _impl_.pid_),
+  ~0u,  // no _has_bits_
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::ProcedureStateResponse, _internal_metadata_),
+  ~0u,  // no _extensions_
+  ~0u,  // no _oneof_case_
+  ~0u,  // no _weak_field_map_
+  ~0u,  // no _inlined_string_donated_
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::ProcedureStateResponse, _impl_.header_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::ProcedureStateResponse, _impl_.status_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::ProcedureStateResponse, _impl_.error_),
+};
+static const ::_pbi::MigrationSchema schemas[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
+  { 0, -1, -1, sizeof(::greptime::v1::meta::QueryProcedureRequest)},
+  { 8, -1, -1, sizeof(::greptime::v1::meta::ProcedureStateResponse)},
+};
+
+static const ::_pb::Message* const file_default_instances[] = {
+  &::greptime::v1::meta::_QueryProcedureRequest_default_instance_._instance,
+  &::greptime::v1::meta::_ProcedureStateResponse_default_instance_._instance,
+};
+
+const char descriptor_table_protodef_greptime_2fv1_2fmeta_2fprocedure_2eproto[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) =
+  "\n greptime/v1/meta/procedure.proto\022\020grep"
+  "time.v1.meta\032\035greptime/v1/meta/common.pr"
+  "oto\032\032greptime/v1/meta/ddl.proto\032\035greptim"
+  "e/v1/meta/region.proto\"t\n\025QueryProcedure"
+  "Request\022/\n\006header\030\001 \001(\0132\037.greptime.v1.me"
+  "ta.RequestHeader\022*\n\003pid\030\002 \001(\0132\035.greptime"
+  ".v1.meta.ProcedureId\"\214\001\n\026ProcedureStateR"
+  "esponse\0220\n\006header\030\001 \001(\0132 .greptime.v1.me"
+  "ta.ResponseHeader\0221\n\006status\030\002 \001(\0162!.grep"
+  "time.v1.meta.ProcedureStatus\022\r\n\005error\030\003 "
+  "\001(\t*B\n\017ProcedureStatus\022\013\n\007Running\020\000\022\010\n\004D"
+  "one\020\001\022\014\n\010Retrying\020\002\022\n\n\006Failed\020\0032\226\002\n\020Proc"
+  "edureService\022Z\n\005query\022\'.greptime.v1.meta"
+  ".QueryProcedureRequest\032(.greptime.v1.met"
+  "a.ProcedureStateResponse\022J\n\003ddl\022 .grepti"
+  "me.v1.meta.DdlTaskRequest\032!.greptime.v1."
+  "meta.DdlTaskResponse\022Z\n\007migrate\022&.grepti"
+  "me.v1.meta.MigrateRegionRequest\032\'.grepti"
+  "me.v1.meta.MigrateRegionResponseB<Z:gith"
+  "ub.com/GreptimeTeam/greptime-proto/go/gr"
+  "eptime/v1/metab\006proto3"
+  ;
+static const ::_pbi::DescriptorTable* const descriptor_table_greptime_2fv1_2fmeta_2fprocedure_2eproto_deps[3] = {
+  &::descriptor_table_greptime_2fv1_2fmeta_2fcommon_2eproto,
+  &::descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto,
+  &::descriptor_table_greptime_2fv1_2fmeta_2fregion_2eproto,
+};
+static ::_pbi::once_flag descriptor_table_greptime_2fv1_2fmeta_2fprocedure_2eproto_once;
+const ::_pbi::DescriptorTable descriptor_table_greptime_2fv1_2fmeta_2fprocedure_2eproto = {
+    false, false, 822, descriptor_table_protodef_greptime_2fv1_2fmeta_2fprocedure_2eproto,
+    "greptime/v1/meta/procedure.proto",
+    &descriptor_table_greptime_2fv1_2fmeta_2fprocedure_2eproto_once, descriptor_table_greptime_2fv1_2fmeta_2fprocedure_2eproto_deps, 3, 2,
+    schemas, file_default_instances, TableStruct_greptime_2fv1_2fmeta_2fprocedure_2eproto::offsets,
+    file_level_metadata_greptime_2fv1_2fmeta_2fprocedure_2eproto, file_level_enum_descriptors_greptime_2fv1_2fmeta_2fprocedure_2eproto,
+    file_level_service_descriptors_greptime_2fv1_2fmeta_2fprocedure_2eproto,
+};
+PROTOBUF_ATTRIBUTE_WEAK const ::_pbi::DescriptorTable* descriptor_table_greptime_2fv1_2fmeta_2fprocedure_2eproto_getter() {
+  return &descriptor_table_greptime_2fv1_2fmeta_2fprocedure_2eproto;
+}
+
+// Force running AddDescriptors() at dynamic initialization time.
+PROTOBUF_ATTRIBUTE_INIT_PRIORITY2 static ::_pbi::AddDescriptorsRunner dynamic_init_dummy_greptime_2fv1_2fmeta_2fprocedure_2eproto(&descriptor_table_greptime_2fv1_2fmeta_2fprocedure_2eproto);
+namespace greptime {
+namespace v1 {
+namespace meta {
+const ::PROTOBUF_NAMESPACE_ID::EnumDescriptor* ProcedureStatus_descriptor() {
+  ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(&descriptor_table_greptime_2fv1_2fmeta_2fprocedure_2eproto);
+  return file_level_enum_descriptors_greptime_2fv1_2fmeta_2fprocedure_2eproto[0];
+}
+bool ProcedureStatus_IsValid(int value) {
+  switch (value) {
+    case 0:
+    case 1:
+    case 2:
+    case 3:
+      return true;
+    default:
+      return false;
+  }
+}
+
+
+// ===================================================================
+
+class QueryProcedureRequest::_Internal {
+ public:
+  static const ::greptime::v1::meta::RequestHeader& header(const QueryProcedureRequest* msg);
+  static const ::greptime::v1::meta::ProcedureId& pid(const QueryProcedureRequest* msg);
+};
+
+const ::greptime::v1::meta::RequestHeader&
+QueryProcedureRequest::_Internal::header(const QueryProcedureRequest* msg) {
+  return *msg->_impl_.header_;
+}
+const ::greptime::v1::meta::ProcedureId&
+QueryProcedureRequest::_Internal::pid(const QueryProcedureRequest* msg) {
+  return *msg->_impl_.pid_;
+}
+void QueryProcedureRequest::clear_header() {
+  if (GetArenaForAllocation() == nullptr && _impl_.header_ != nullptr) {
+    delete _impl_.header_;
+  }
+  _impl_.header_ = nullptr;
+}
+void QueryProcedureRequest::clear_pid() {
+  if (GetArenaForAllocation() == nullptr && _impl_.pid_ != nullptr) {
+    delete _impl_.pid_;
+  }
+  _impl_.pid_ = nullptr;
+}
+QueryProcedureRequest::QueryProcedureRequest(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+                         bool is_message_owned)
+  : ::PROTOBUF_NAMESPACE_ID::Message(arena, is_message_owned) {
+  SharedCtor(arena, is_message_owned);
+  // @@protoc_insertion_point(arena_constructor:greptime.v1.meta.QueryProcedureRequest)
+}
+QueryProcedureRequest::QueryProcedureRequest(const QueryProcedureRequest& from)
+  : ::PROTOBUF_NAMESPACE_ID::Message() {
+  QueryProcedureRequest* const _this = this; (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.header_){nullptr}
+    , decltype(_impl_.pid_){nullptr}
+    , /*decltype(_impl_._cached_size_)*/{}};
+
+  _internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
+  if (from._internal_has_header()) {
+    _this->_impl_.header_ = new ::greptime::v1::meta::RequestHeader(*from._impl_.header_);
+  }
+  if (from._internal_has_pid()) {
+    _this->_impl_.pid_ = new ::greptime::v1::meta::ProcedureId(*from._impl_.pid_);
+  }
+  // @@protoc_insertion_point(copy_constructor:greptime.v1.meta.QueryProcedureRequest)
+}
+
+inline void QueryProcedureRequest::SharedCtor(
+    ::_pb::Arena* arena, bool is_message_owned) {
+  (void)arena;
+  (void)is_message_owned;
+  new (&_impl_) Impl_{
+      decltype(_impl_.header_){nullptr}
+    , decltype(_impl_.pid_){nullptr}
+    , /*decltype(_impl_._cached_size_)*/{}
+  };
+}
+
+QueryProcedureRequest::~QueryProcedureRequest() {
+  // @@protoc_insertion_point(destructor:greptime.v1.meta.QueryProcedureRequest)
+  if (auto *arena = _internal_metadata_.DeleteReturnArena<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>()) {
+  (void)arena;
+    return;
+  }
+  SharedDtor();
+}
+
+inline void QueryProcedureRequest::SharedDtor() {
+  GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
+  if (this != internal_default_instance()) delete _impl_.header_;
+  if (this != internal_default_instance()) delete _impl_.pid_;
+}
+
+void QueryProcedureRequest::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+void QueryProcedureRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:greptime.v1.meta.QueryProcedureRequest)
+  uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  if (GetArenaForAllocation() == nullptr && _impl_.header_ != nullptr) {
+    delete _impl_.header_;
+  }
+  _impl_.header_ = nullptr;
+  if (GetArenaForAllocation() == nullptr && _impl_.pid_ != nullptr) {
+    delete _impl_.pid_;
+  }
+  _impl_.pid_ = nullptr;
+  _internal_metadata_.Clear<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>();
+}
+
+const char* QueryProcedureRequest::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx) {
+#define CHK_(x) if (PROTOBUF_PREDICT_FALSE(!(x))) goto failure
+  while (!ctx->Done(&ptr)) {
+    uint32_t tag;
+    ptr = ::_pbi::ReadTag(ptr, &tag);
+    switch (tag >> 3) {
+      // .greptime.v1.meta.RequestHeader header = 1;
+      case 1:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 10)) {
+          ptr = ctx->ParseMessage(_internal_mutable_header(), ptr);
+          CHK_(ptr);
+        } else
+          goto handle_unusual;
+        continue;
+      // .greptime.v1.meta.ProcedureId pid = 2;
+      case 2:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 18)) {
+          ptr = ctx->ParseMessage(_internal_mutable_pid(), ptr);
+          CHK_(ptr);
+        } else
+          goto handle_unusual;
+        continue;
+      default:
+        goto handle_unusual;
+    }  // switch
+  handle_unusual:
+    if ((tag == 0) || ((tag & 7) == 4)) {
+      CHK_(ptr);
+      ctx->SetLastTag(tag);
+      goto message_done;
+    }
+    ptr = UnknownFieldParse(
+        tag,
+        _internal_metadata_.mutable_unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(),
+        ptr, ctx);
+    CHK_(ptr != nullptr);
+  }  // while
+message_done:
+  return ptr;
+failure:
+  ptr = nullptr;
+  goto message_done;
+#undef CHK_
+}
+
+uint8_t* QueryProcedureRequest::_InternalSerialize(
+    uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:greptime.v1.meta.QueryProcedureRequest)
+  uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  // .greptime.v1.meta.RequestHeader header = 1;
+  if (this->_internal_has_header()) {
+    target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
+      InternalWriteMessage(1, _Internal::header(this),
+        _Internal::header(this).GetCachedSize(), target, stream);
+  }
+
+  // .greptime.v1.meta.ProcedureId pid = 2;
+  if (this->_internal_has_pid()) {
+    target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
+      InternalWriteMessage(2, _Internal::pid(this),
+        _Internal::pid(this).GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target = ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+        _internal_metadata_.unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(::PROTOBUF_NAMESPACE_ID::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:greptime.v1.meta.QueryProcedureRequest)
+  return target;
+}
+
+size_t QueryProcedureRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:greptime.v1.meta.QueryProcedureRequest)
+  size_t total_size = 0;
+
+  uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // .greptime.v1.meta.RequestHeader header = 1;
+  if (this->_internal_has_header()) {
+    total_size += 1 +
+      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(
+        *_impl_.header_);
+  }
+
+  // .greptime.v1.meta.ProcedureId pid = 2;
+  if (this->_internal_has_pid()) {
+    total_size += 1 +
+      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(
+        *_impl_.pid_);
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData QueryProcedureRequest::_class_data_ = {
+    ::PROTOBUF_NAMESPACE_ID::Message::CopyWithSourceCheck,
+    QueryProcedureRequest::MergeImpl
+};
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*QueryProcedureRequest::GetClassData() const { return &_class_data_; }
+
+
+void QueryProcedureRequest::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg) {
+  auto* const _this = static_cast<QueryProcedureRequest*>(&to_msg);
+  auto& from = static_cast<const QueryProcedureRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:greptime.v1.meta.QueryProcedureRequest)
+  GOOGLE_DCHECK_NE(&from, _this);
+  uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (from._internal_has_header()) {
+    _this->_internal_mutable_header()->::greptime::v1::meta::RequestHeader::MergeFrom(
+        from._internal_header());
+  }
+  if (from._internal_has_pid()) {
+    _this->_internal_mutable_pid()->::greptime::v1::meta::ProcedureId::MergeFrom(
+        from._internal_pid());
+  }
+  _this->_internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void QueryProcedureRequest::CopyFrom(const QueryProcedureRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:greptime.v1.meta.QueryProcedureRequest)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool QueryProcedureRequest::IsInitialized() const {
+  return true;
+}
+
+void QueryProcedureRequest::InternalSwap(QueryProcedureRequest* other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::PROTOBUF_NAMESPACE_ID::internal::memswap<
+      PROTOBUF_FIELD_OFFSET(QueryProcedureRequest, _impl_.pid_)
+      + sizeof(QueryProcedureRequest::_impl_.pid_)
+      - PROTOBUF_FIELD_OFFSET(QueryProcedureRequest, _impl_.header_)>(
+          reinterpret_cast<char*>(&_impl_.header_),
+          reinterpret_cast<char*>(&other->_impl_.header_));
+}
+
+::PROTOBUF_NAMESPACE_ID::Metadata QueryProcedureRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_greptime_2fv1_2fmeta_2fprocedure_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fprocedure_2eproto_once,
+      file_level_metadata_greptime_2fv1_2fmeta_2fprocedure_2eproto[0]);
+}
+
+// ===================================================================
+
+class ProcedureStateResponse::_Internal {
+ public:
+  static const ::greptime::v1::meta::ResponseHeader& header(const ProcedureStateResponse* msg);
+};
+
+const ::greptime::v1::meta::ResponseHeader&
+ProcedureStateResponse::_Internal::header(const ProcedureStateResponse* msg) {
+  return *msg->_impl_.header_;
+}
+void ProcedureStateResponse::clear_header() {
+  if (GetArenaForAllocation() == nullptr && _impl_.header_ != nullptr) {
+    delete _impl_.header_;
+  }
+  _impl_.header_ = nullptr;
+}
+ProcedureStateResponse::ProcedureStateResponse(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+                         bool is_message_owned)
+  : ::PROTOBUF_NAMESPACE_ID::Message(arena, is_message_owned) {
+  SharedCtor(arena, is_message_owned);
+  // @@protoc_insertion_point(arena_constructor:greptime.v1.meta.ProcedureStateResponse)
+}
+ProcedureStateResponse::ProcedureStateResponse(const ProcedureStateResponse& from)
+  : ::PROTOBUF_NAMESPACE_ID::Message() {
+  ProcedureStateResponse* const _this = this; (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.error_){}
+    , decltype(_impl_.header_){nullptr}
+    , decltype(_impl_.status_){}
+    , /*decltype(_impl_._cached_size_)*/{}};
+
+  _internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
+  _impl_.error_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+    _impl_.error_.Set("", GetArenaForAllocation());
+  #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_error().empty()) {
+    _this->_impl_.error_.Set(from._internal_error(), 
+      _this->GetArenaForAllocation());
+  }
+  if (from._internal_has_header()) {
+    _this->_impl_.header_ = new ::greptime::v1::meta::ResponseHeader(*from._impl_.header_);
+  }
+  _this->_impl_.status_ = from._impl_.status_;
+  // @@protoc_insertion_point(copy_constructor:greptime.v1.meta.ProcedureStateResponse)
+}
+
+inline void ProcedureStateResponse::SharedCtor(
+    ::_pb::Arena* arena, bool is_message_owned) {
+  (void)arena;
+  (void)is_message_owned;
+  new (&_impl_) Impl_{
+      decltype(_impl_.error_){}
+    , decltype(_impl_.header_){nullptr}
+    , decltype(_impl_.status_){0}
+    , /*decltype(_impl_._cached_size_)*/{}
+  };
+  _impl_.error_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+    _impl_.error_.Set("", GetArenaForAllocation());
+  #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+
+ProcedureStateResponse::~ProcedureStateResponse() {
+  // @@protoc_insertion_point(destructor:greptime.v1.meta.ProcedureStateResponse)
+  if (auto *arena = _internal_metadata_.DeleteReturnArena<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>()) {
+  (void)arena;
+    return;
+  }
+  SharedDtor();
+}
+
+inline void ProcedureStateResponse::SharedDtor() {
+  GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.error_.Destroy();
+  if (this != internal_default_instance()) delete _impl_.header_;
+}
+
+void ProcedureStateResponse::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+void ProcedureStateResponse::Clear() {
+// @@protoc_insertion_point(message_clear_start:greptime.v1.meta.ProcedureStateResponse)
+  uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.error_.ClearToEmpty();
+  if (GetArenaForAllocation() == nullptr && _impl_.header_ != nullptr) {
+    delete _impl_.header_;
+  }
+  _impl_.header_ = nullptr;
+  _impl_.status_ = 0;
+  _internal_metadata_.Clear<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>();
+}
+
+const char* ProcedureStateResponse::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx) {
+#define CHK_(x) if (PROTOBUF_PREDICT_FALSE(!(x))) goto failure
+  while (!ctx->Done(&ptr)) {
+    uint32_t tag;
+    ptr = ::_pbi::ReadTag(ptr, &tag);
+    switch (tag >> 3) {
+      // .greptime.v1.meta.ResponseHeader header = 1;
+      case 1:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 10)) {
+          ptr = ctx->ParseMessage(_internal_mutable_header(), ptr);
+          CHK_(ptr);
+        } else
+          goto handle_unusual;
+        continue;
+      // .greptime.v1.meta.ProcedureStatus status = 2;
+      case 2:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 16)) {
+          uint64_t val = ::PROTOBUF_NAMESPACE_ID::internal::ReadVarint64(&ptr);
+          CHK_(ptr);
+          _internal_set_status(static_cast<::greptime::v1::meta::ProcedureStatus>(val));
+        } else
+          goto handle_unusual;
+        continue;
+      // string error = 3;
+      case 3:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 26)) {
+          auto str = _internal_mutable_error();
+          ptr = ::_pbi::InlineGreedyStringParser(str, ptr, ctx);
+          CHK_(ptr);
+          CHK_(::_pbi::VerifyUTF8(str, "greptime.v1.meta.ProcedureStateResponse.error"));
+        } else
+          goto handle_unusual;
+        continue;
+      default:
+        goto handle_unusual;
+    }  // switch
+  handle_unusual:
+    if ((tag == 0) || ((tag & 7) == 4)) {
+      CHK_(ptr);
+      ctx->SetLastTag(tag);
+      goto message_done;
+    }
+    ptr = UnknownFieldParse(
+        tag,
+        _internal_metadata_.mutable_unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(),
+        ptr, ctx);
+    CHK_(ptr != nullptr);
+  }  // while
+message_done:
+  return ptr;
+failure:
+  ptr = nullptr;
+  goto message_done;
+#undef CHK_
+}
+
+uint8_t* ProcedureStateResponse::_InternalSerialize(
+    uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:greptime.v1.meta.ProcedureStateResponse)
+  uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  // .greptime.v1.meta.ResponseHeader header = 1;
+  if (this->_internal_has_header()) {
+    target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
+      InternalWriteMessage(1, _Internal::header(this),
+        _Internal::header(this).GetCachedSize(), target, stream);
+  }
+
+  // .greptime.v1.meta.ProcedureStatus status = 2;
+  if (this->_internal_status() != 0) {
+    target = stream->EnsureSpace(target);
+    target = ::_pbi::WireFormatLite::WriteEnumToArray(
+      2, this->_internal_status(), target);
+  }
+
+  // string error = 3;
+  if (!this->_internal_error().empty()) {
+    ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(
+      this->_internal_error().data(), static_cast<int>(this->_internal_error().length()),
+      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::SERIALIZE,
+      "greptime.v1.meta.ProcedureStateResponse.error");
+    target = stream->WriteStringMaybeAliased(
+        3, this->_internal_error(), target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target = ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+        _internal_metadata_.unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(::PROTOBUF_NAMESPACE_ID::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:greptime.v1.meta.ProcedureStateResponse)
+  return target;
+}
+
+size_t ProcedureStateResponse::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:greptime.v1.meta.ProcedureStateResponse)
+  size_t total_size = 0;
+
+  uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string error = 3;
+  if (!this->_internal_error().empty()) {
+    total_size += 1 +
+      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::StringSize(
+        this->_internal_error());
+  }
+
+  // .greptime.v1.meta.ResponseHeader header = 1;
+  if (this->_internal_has_header()) {
+    total_size += 1 +
+      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(
+        *_impl_.header_);
+  }
+
+  // .greptime.v1.meta.ProcedureStatus status = 2;
+  if (this->_internal_status() != 0) {
+    total_size += 1 +
+      ::_pbi::WireFormatLite::EnumSize(this->_internal_status());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData ProcedureStateResponse::_class_data_ = {
+    ::PROTOBUF_NAMESPACE_ID::Message::CopyWithSourceCheck,
+    ProcedureStateResponse::MergeImpl
+};
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*ProcedureStateResponse::GetClassData() const { return &_class_data_; }
+
+
+void ProcedureStateResponse::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg) {
+  auto* const _this = static_cast<ProcedureStateResponse*>(&to_msg);
+  auto& from = static_cast<const ProcedureStateResponse&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:greptime.v1.meta.ProcedureStateResponse)
+  GOOGLE_DCHECK_NE(&from, _this);
+  uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_error().empty()) {
+    _this->_internal_set_error(from._internal_error());
+  }
+  if (from._internal_has_header()) {
+    _this->_internal_mutable_header()->::greptime::v1::meta::ResponseHeader::MergeFrom(
+        from._internal_header());
+  }
+  if (from._internal_status() != 0) {
+    _this->_internal_set_status(from._internal_status());
+  }
+  _this->_internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void ProcedureStateResponse::CopyFrom(const ProcedureStateResponse& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:greptime.v1.meta.ProcedureStateResponse)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool ProcedureStateResponse::IsInitialized() const {
+  return true;
+}
+
+void ProcedureStateResponse::InternalSwap(ProcedureStateResponse* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::InternalSwap(
+      &_impl_.error_, lhs_arena,
+      &other->_impl_.error_, rhs_arena
+  );
+  ::PROTOBUF_NAMESPACE_ID::internal::memswap<
+      PROTOBUF_FIELD_OFFSET(ProcedureStateResponse, _impl_.status_)
+      + sizeof(ProcedureStateResponse::_impl_.status_)
+      - PROTOBUF_FIELD_OFFSET(ProcedureStateResponse, _impl_.header_)>(
+          reinterpret_cast<char*>(&_impl_.header_),
+          reinterpret_cast<char*>(&other->_impl_.header_));
+}
+
+::PROTOBUF_NAMESPACE_ID::Metadata ProcedureStateResponse::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_greptime_2fv1_2fmeta_2fprocedure_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fprocedure_2eproto_once,
+      file_level_metadata_greptime_2fv1_2fmeta_2fprocedure_2eproto[1]);
+}
+
+// @@protoc_insertion_point(namespace_scope)
+}  // namespace meta
+}  // namespace v1
+}  // namespace greptime
+PROTOBUF_NAMESPACE_OPEN
+template<> PROTOBUF_NOINLINE ::greptime::v1::meta::QueryProcedureRequest*
+Arena::CreateMaybeMessage< ::greptime::v1::meta::QueryProcedureRequest >(Arena* arena) {
+  return Arena::CreateMessageInternal< ::greptime::v1::meta::QueryProcedureRequest >(arena);
+}
+template<> PROTOBUF_NOINLINE ::greptime::v1::meta::ProcedureStateResponse*
+Arena::CreateMaybeMessage< ::greptime::v1::meta::ProcedureStateResponse >(Arena* arena) {
+  return Arena::CreateMessageInternal< ::greptime::v1::meta::ProcedureStateResponse >(arena);
+}
+PROTOBUF_NAMESPACE_CLOSE
+
+// @@protoc_insertion_point(global_scope)
+#include <google/protobuf/port_undef.inc>

c++/greptime/v1/meta/procedure.pb.h

@@ -0,0 +1,824 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: greptime/v1/meta/procedure.proto
+
+#ifndef GOOGLE_PROTOBUF_INCLUDED_greptime_2fv1_2fmeta_2fprocedure_2eproto
+#define GOOGLE_PROTOBUF_INCLUDED_greptime_2fv1_2fmeta_2fprocedure_2eproto
+
+#include <limits>
+#include <string>
+
+#include <google/protobuf/port_def.inc>
+#if PROTOBUF_VERSION < 3021000
+#error This file was generated by a newer version of protoc which is
+#error incompatible with your Protocol Buffer headers. Please update
+#error your headers.
+#endif
+#if 3021006 < PROTOBUF_MIN_PROTOC_VERSION
+#error This file was generated by an older version of protoc which is
+#error incompatible with your Protocol Buffer headers. Please
+#error regenerate this file with a newer version of protoc.
+#endif
+
+#include <google/protobuf/port_undef.inc>
+#include <google/protobuf/io/coded_stream.h>
+#include <google/protobuf/arena.h>
+#include <google/protobuf/arenastring.h>
+#include <google/protobuf/generated_message_util.h>
+#include <google/protobuf/metadata_lite.h>
+#include <google/protobuf/generated_message_reflection.h>
+#include <google/protobuf/message.h>
+#include <google/protobuf/repeated_field.h>  // IWYU pragma: export
+#include <google/protobuf/extension_set.h>  // IWYU pragma: export
+#include <google/protobuf/generated_enum_reflection.h>
+#include <google/protobuf/unknown_field_set.h>
+#include "greptime/v1/meta/common.pb.h"
+#include "greptime/v1/meta/ddl.pb.h"
+#include "greptime/v1/meta/region.pb.h"
+// @@protoc_insertion_point(includes)
+#include <google/protobuf/port_def.inc>
+#define PROTOBUF_INTERNAL_EXPORT_greptime_2fv1_2fmeta_2fprocedure_2eproto
+PROTOBUF_NAMESPACE_OPEN
+namespace internal {
+class AnyMetadata;
+}  // namespace internal
+PROTOBUF_NAMESPACE_CLOSE
+
+// Internal implementation detail -- do not use these members.
+struct TableStruct_greptime_2fv1_2fmeta_2fprocedure_2eproto {
+  static const uint32_t offsets[];
+};
+extern const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_greptime_2fv1_2fmeta_2fprocedure_2eproto;
+namespace greptime {
+namespace v1 {
+namespace meta {
+class ProcedureStateResponse;
+struct ProcedureStateResponseDefaultTypeInternal;
+extern ProcedureStateResponseDefaultTypeInternal _ProcedureStateResponse_default_instance_;
+class QueryProcedureRequest;
+struct QueryProcedureRequestDefaultTypeInternal;
+extern QueryProcedureRequestDefaultTypeInternal _QueryProcedureRequest_default_instance_;
+}  // namespace meta
+}  // namespace v1
+}  // namespace greptime
+PROTOBUF_NAMESPACE_OPEN
+template<> ::greptime::v1::meta::ProcedureStateResponse* Arena::CreateMaybeMessage<::greptime::v1::meta::ProcedureStateResponse>(Arena*);
+template<> ::greptime::v1::meta::QueryProcedureRequest* Arena::CreateMaybeMessage<::greptime::v1::meta::QueryProcedureRequest>(Arena*);
+PROTOBUF_NAMESPACE_CLOSE
+namespace greptime {
+namespace v1 {
+namespace meta {
+
+enum ProcedureStatus : int {
+  Running = 0,
+  Done = 1,
+  Retrying = 2,
+  Failed = 3,
+  ProcedureStatus_INT_MIN_SENTINEL_DO_NOT_USE_ = std::numeric_limits<int32_t>::min(),
+  ProcedureStatus_INT_MAX_SENTINEL_DO_NOT_USE_ = std::numeric_limits<int32_t>::max()
+};
+bool ProcedureStatus_IsValid(int value);
+constexpr ProcedureStatus ProcedureStatus_MIN = Running;
+constexpr ProcedureStatus ProcedureStatus_MAX = Failed;
+constexpr int ProcedureStatus_ARRAYSIZE = ProcedureStatus_MAX + 1;
+
+const ::PROTOBUF_NAMESPACE_ID::EnumDescriptor* ProcedureStatus_descriptor();
+template<typename T>
+inline const std::string& ProcedureStatus_Name(T enum_t_value) {
+  static_assert(::std::is_same<T, ProcedureStatus>::value ||
+    ::std::is_integral<T>::value,
+    "Incorrect type passed to function ProcedureStatus_Name.");
+  return ::PROTOBUF_NAMESPACE_ID::internal::NameOfEnum(
+    ProcedureStatus_descriptor(), enum_t_value);
+}
+inline bool ProcedureStatus_Parse(
+    ::PROTOBUF_NAMESPACE_ID::ConstStringParam name, ProcedureStatus* value) {
+  return ::PROTOBUF_NAMESPACE_ID::internal::ParseNamedEnum<ProcedureStatus>(
+    ProcedureStatus_descriptor(), name, value);
+}
+// ===================================================================
+
+class QueryProcedureRequest final :
+    public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:greptime.v1.meta.QueryProcedureRequest) */ {
+ public:
+  inline QueryProcedureRequest() : QueryProcedureRequest(nullptr) {}
+  ~QueryProcedureRequest() override;
+  explicit PROTOBUF_CONSTEXPR QueryProcedureRequest(::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized);
+
+  QueryProcedureRequest(const QueryProcedureRequest& from);
+  QueryProcedureRequest(QueryProcedureRequest&& from) noexcept
+    : QueryProcedureRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline QueryProcedureRequest& operator=(const QueryProcedureRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline QueryProcedureRequest& operator=(QueryProcedureRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const QueryProcedureRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const QueryProcedureRequest* internal_default_instance() {
+    return reinterpret_cast<const QueryProcedureRequest*>(
+               &_QueryProcedureRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    0;
+
+  friend void swap(QueryProcedureRequest& a, QueryProcedureRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(QueryProcedureRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::PROTOBUF_NAMESPACE_ID::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(QueryProcedureRequest* other) {
+    if (other == this) return;
+    GOOGLE_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  QueryProcedureRequest* New(::PROTOBUF_NAMESPACE_ID::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<QueryProcedureRequest>(arena);
+  }
+  using ::PROTOBUF_NAMESPACE_ID::Message::CopyFrom;
+  void CopyFrom(const QueryProcedureRequest& from);
+  using ::PROTOBUF_NAMESPACE_ID::Message::MergeFrom;
+  void MergeFrom( const QueryProcedureRequest& from) {
+    QueryProcedureRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::PROTOBUF_NAMESPACE_ID::internal::ParseContext* ctx) final;
+  uint8_t* _InternalSerialize(
+      uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::PROTOBUF_NAMESPACE_ID::Arena* arena, bool is_message_owned);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(QueryProcedureRequest* other);
+
+  private:
+  friend class ::PROTOBUF_NAMESPACE_ID::internal::AnyMetadata;
+  static ::PROTOBUF_NAMESPACE_ID::StringPiece FullMessageName() {
+    return "greptime.v1.meta.QueryProcedureRequest";
+  }
+  protected:
+  explicit QueryProcedureRequest(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+                       bool is_message_owned = false);
+  public:
+
+  static const ClassData _class_data_;
+  const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*GetClassData() const final;
+
+  ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kHeaderFieldNumber = 1,
+    kPidFieldNumber = 2,
+  };
+  // .greptime.v1.meta.RequestHeader header = 1;
+  bool has_header() const;
+  private:
+  bool _internal_has_header() const;
+  public:
+  void clear_header();
+  const ::greptime::v1::meta::RequestHeader& header() const;
+  PROTOBUF_NODISCARD ::greptime::v1::meta::RequestHeader* release_header();
+  ::greptime::v1::meta::RequestHeader* mutable_header();
+  void set_allocated_header(::greptime::v1::meta::RequestHeader* header);
+  private:
+  const ::greptime::v1::meta::RequestHeader& _internal_header() const;
+  ::greptime::v1::meta::RequestHeader* _internal_mutable_header();
+  public:
+  void unsafe_arena_set_allocated_header(
+      ::greptime::v1::meta::RequestHeader* header);
+  ::greptime::v1::meta::RequestHeader* unsafe_arena_release_header();
+
+  // .greptime.v1.meta.ProcedureId pid = 2;
+  bool has_pid() const;
+  private:
+  bool _internal_has_pid() const;
+  public:
+  void clear_pid();
+  const ::greptime::v1::meta::ProcedureId& pid() const;
+  PROTOBUF_NODISCARD ::greptime::v1::meta::ProcedureId* release_pid();
+  ::greptime::v1::meta::ProcedureId* mutable_pid();
+  void set_allocated_pid(::greptime::v1::meta::ProcedureId* pid);
+  private:
+  const ::greptime::v1::meta::ProcedureId& _internal_pid() const;
+  ::greptime::v1::meta::ProcedureId* _internal_mutable_pid();
+  public:
+  void unsafe_arena_set_allocated_pid(
+      ::greptime::v1::meta::ProcedureId* pid);
+  ::greptime::v1::meta::ProcedureId* unsafe_arena_release_pid();
+
+  // @@protoc_insertion_point(class_scope:greptime.v1.meta.QueryProcedureRequest)
+ private:
+  class _Internal;
+
+  template <typename T> friend class ::PROTOBUF_NAMESPACE_ID::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::greptime::v1::meta::RequestHeader* header_;
+    ::greptime::v1::meta::ProcedureId* pid_;
+    mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_greptime_2fv1_2fmeta_2fprocedure_2eproto;
+};
+// -------------------------------------------------------------------
+
+class ProcedureStateResponse final :
+    public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:greptime.v1.meta.ProcedureStateResponse) */ {
+ public:
+  inline ProcedureStateResponse() : ProcedureStateResponse(nullptr) {}
+  ~ProcedureStateResponse() override;
+  explicit PROTOBUF_CONSTEXPR ProcedureStateResponse(::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized);
+
+  ProcedureStateResponse(const ProcedureStateResponse& from);
+  ProcedureStateResponse(ProcedureStateResponse&& from) noexcept
+    : ProcedureStateResponse() {
+    *this = ::std::move(from);
+  }
+
+  inline ProcedureStateResponse& operator=(const ProcedureStateResponse& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline ProcedureStateResponse& operator=(ProcedureStateResponse&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const ProcedureStateResponse& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const ProcedureStateResponse* internal_default_instance() {
+    return reinterpret_cast<const ProcedureStateResponse*>(
+               &_ProcedureStateResponse_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    1;
+
+  friend void swap(ProcedureStateResponse& a, ProcedureStateResponse& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(ProcedureStateResponse* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::PROTOBUF_NAMESPACE_ID::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(ProcedureStateResponse* other) {
+    if (other == this) return;
+    GOOGLE_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  ProcedureStateResponse* New(::PROTOBUF_NAMESPACE_ID::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<ProcedureStateResponse>(arena);
+  }
+  using ::PROTOBUF_NAMESPACE_ID::Message::CopyFrom;
+  void CopyFrom(const ProcedureStateResponse& from);
+  using ::PROTOBUF_NAMESPACE_ID::Message::MergeFrom;
+  void MergeFrom( const ProcedureStateResponse& from) {
+    ProcedureStateResponse::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::PROTOBUF_NAMESPACE_ID::internal::ParseContext* ctx) final;
+  uint8_t* _InternalSerialize(
+      uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::PROTOBUF_NAMESPACE_ID::Arena* arena, bool is_message_owned);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(ProcedureStateResponse* other);
+
+  private:
+  friend class ::PROTOBUF_NAMESPACE_ID::internal::AnyMetadata;
+  static ::PROTOBUF_NAMESPACE_ID::StringPiece FullMessageName() {
+    return "greptime.v1.meta.ProcedureStateResponse";
+  }
+  protected:
+  explicit ProcedureStateResponse(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+                       bool is_message_owned = false);
+  public:
+
+  static const ClassData _class_data_;
+  const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*GetClassData() const final;
+
+  ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kErrorFieldNumber = 3,
+    kHeaderFieldNumber = 1,
+    kStatusFieldNumber = 2,
+  };
+  // string error = 3;
+  void clear_error();
+  const std::string& error() const;
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_error(ArgT0&& arg0, ArgT... args);
+  std::string* mutable_error();
+  PROTOBUF_NODISCARD std::string* release_error();
+  void set_allocated_error(std::string* error);
+  private:
+  const std::string& _internal_error() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_error(const std::string& value);
+  std::string* _internal_mutable_error();
+  public:
+
+  // .greptime.v1.meta.ResponseHeader header = 1;
+  bool has_header() const;
+  private:
+  bool _internal_has_header() const;
+  public:
+  void clear_header();
+  const ::greptime::v1::meta::ResponseHeader& header() const;
+  PROTOBUF_NODISCARD ::greptime::v1::meta::ResponseHeader* release_header();
+  ::greptime::v1::meta::ResponseHeader* mutable_header();
+  void set_allocated_header(::greptime::v1::meta::ResponseHeader* header);
+  private:
+  const ::greptime::v1::meta::ResponseHeader& _internal_header() const;
+  ::greptime::v1::meta::ResponseHeader* _internal_mutable_header();
+  public:
+  void unsafe_arena_set_allocated_header(
+      ::greptime::v1::meta::ResponseHeader* header);
+  ::greptime::v1::meta::ResponseHeader* unsafe_arena_release_header();
+
+  // .greptime.v1.meta.ProcedureStatus status = 2;
+  void clear_status();
+  ::greptime::v1::meta::ProcedureStatus status() const;
+  void set_status(::greptime::v1::meta::ProcedureStatus value);
+  private:
+  ::greptime::v1::meta::ProcedureStatus _internal_status() const;
+  void _internal_set_status(::greptime::v1::meta::ProcedureStatus value);
+  public:
+
+  // @@protoc_insertion_point(class_scope:greptime.v1.meta.ProcedureStateResponse)
+ private:
+  class _Internal;
+
+  template <typename T> friend class ::PROTOBUF_NAMESPACE_ID::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr error_;
+    ::greptime::v1::meta::ResponseHeader* header_;
+    int status_;
+    mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_greptime_2fv1_2fmeta_2fprocedure_2eproto;
+};
+// ===================================================================
+
+
+// ===================================================================
+
+#ifdef __GNUC__
+  #pragma GCC diagnostic push
+  #pragma GCC diagnostic ignored "-Wstrict-aliasing"
+#endif  // __GNUC__
+// QueryProcedureRequest
+
+// .greptime.v1.meta.RequestHeader header = 1;
+inline bool QueryProcedureRequest::_internal_has_header() const {
+  return this != internal_default_instance() && _impl_.header_ != nullptr;
+}
+inline bool QueryProcedureRequest::has_header() const {
+  return _internal_has_header();
+}
+inline const ::greptime::v1::meta::RequestHeader& QueryProcedureRequest::_internal_header() const {
+  const ::greptime::v1::meta::RequestHeader* p = _impl_.header_;
+  return p != nullptr ? *p : reinterpret_cast<const ::greptime::v1::meta::RequestHeader&>(
+      ::greptime::v1::meta::_RequestHeader_default_instance_);
+}
+inline const ::greptime::v1::meta::RequestHeader& QueryProcedureRequest::header() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.meta.QueryProcedureRequest.header)
+  return _internal_header();
+}
+inline void QueryProcedureRequest::unsafe_arena_set_allocated_header(
+    ::greptime::v1::meta::RequestHeader* header) {
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.header_);
+  }
+  _impl_.header_ = header;
+  if (header) {
+    
+  } else {
+    
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.meta.QueryProcedureRequest.header)
+}
+inline ::greptime::v1::meta::RequestHeader* QueryProcedureRequest::release_header() {
+  
+  ::greptime::v1::meta::RequestHeader* temp = _impl_.header_;
+  _impl_.header_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old =  reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(temp);
+  temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
+  if (GetArenaForAllocation() == nullptr) { delete old; }
+#else  // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return temp;
+}
+inline ::greptime::v1::meta::RequestHeader* QueryProcedureRequest::unsafe_arena_release_header() {
+  // @@protoc_insertion_point(field_release:greptime.v1.meta.QueryProcedureRequest.header)
+  
+  ::greptime::v1::meta::RequestHeader* temp = _impl_.header_;
+  _impl_.header_ = nullptr;
+  return temp;
+}
+inline ::greptime::v1::meta::RequestHeader* QueryProcedureRequest::_internal_mutable_header() {
+  
+  if (_impl_.header_ == nullptr) {
+    auto* p = CreateMaybeMessage<::greptime::v1::meta::RequestHeader>(GetArenaForAllocation());
+    _impl_.header_ = p;
+  }
+  return _impl_.header_;
+}
+inline ::greptime::v1::meta::RequestHeader* QueryProcedureRequest::mutable_header() {
+  ::greptime::v1::meta::RequestHeader* _msg = _internal_mutable_header();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.meta.QueryProcedureRequest.header)
+  return _msg;
+}
+inline void QueryProcedureRequest::set_allocated_header(::greptime::v1::meta::RequestHeader* header) {
+  ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
+  if (message_arena == nullptr) {
+    delete reinterpret_cast< ::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.header_);
+  }
+  if (header) {
+    ::PROTOBUF_NAMESPACE_ID::Arena* submessage_arena =
+        ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(
+                reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(header));
+    if (message_arena != submessage_arena) {
+      header = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
+          message_arena, header, submessage_arena);
+    }
+    
+  } else {
+    
+  }
+  _impl_.header_ = header;
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.QueryProcedureRequest.header)
+}
+
+// .greptime.v1.meta.ProcedureId pid = 2;
+inline bool QueryProcedureRequest::_internal_has_pid() const {
+  return this != internal_default_instance() && _impl_.pid_ != nullptr;
+}
+inline bool QueryProcedureRequest::has_pid() const {
+  return _internal_has_pid();
+}
+inline const ::greptime::v1::meta::ProcedureId& QueryProcedureRequest::_internal_pid() const {
+  const ::greptime::v1::meta::ProcedureId* p = _impl_.pid_;
+  return p != nullptr ? *p : reinterpret_cast<const ::greptime::v1::meta::ProcedureId&>(
+      ::greptime::v1::meta::_ProcedureId_default_instance_);
+}
+inline const ::greptime::v1::meta::ProcedureId& QueryProcedureRequest::pid() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.meta.QueryProcedureRequest.pid)
+  return _internal_pid();
+}
+inline void QueryProcedureRequest::unsafe_arena_set_allocated_pid(
+    ::greptime::v1::meta::ProcedureId* pid) {
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.pid_);
+  }
+  _impl_.pid_ = pid;
+  if (pid) {
+    
+  } else {
+    
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.meta.QueryProcedureRequest.pid)
+}
+inline ::greptime::v1::meta::ProcedureId* QueryProcedureRequest::release_pid() {
+  
+  ::greptime::v1::meta::ProcedureId* temp = _impl_.pid_;
+  _impl_.pid_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old =  reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(temp);
+  temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
+  if (GetArenaForAllocation() == nullptr) { delete old; }
+#else  // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return temp;
+}
+inline ::greptime::v1::meta::ProcedureId* QueryProcedureRequest::unsafe_arena_release_pid() {
+  // @@protoc_insertion_point(field_release:greptime.v1.meta.QueryProcedureRequest.pid)
+  
+  ::greptime::v1::meta::ProcedureId* temp = _impl_.pid_;
+  _impl_.pid_ = nullptr;
+  return temp;
+}
+inline ::greptime::v1::meta::ProcedureId* QueryProcedureRequest::_internal_mutable_pid() {
+  
+  if (_impl_.pid_ == nullptr) {
+    auto* p = CreateMaybeMessage<::greptime::v1::meta::ProcedureId>(GetArenaForAllocation());
+    _impl_.pid_ = p;
+  }
+  return _impl_.pid_;
+}
+inline ::greptime::v1::meta::ProcedureId* QueryProcedureRequest::mutable_pid() {
+  ::greptime::v1::meta::ProcedureId* _msg = _internal_mutable_pid();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.meta.QueryProcedureRequest.pid)
+  return _msg;
+}
+inline void QueryProcedureRequest::set_allocated_pid(::greptime::v1::meta::ProcedureId* pid) {
+  ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
+  if (message_arena == nullptr) {
+    delete reinterpret_cast< ::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.pid_);
+  }
+  if (pid) {
+    ::PROTOBUF_NAMESPACE_ID::Arena* submessage_arena =
+        ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(
+                reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(pid));
+    if (message_arena != submessage_arena) {
+      pid = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
+          message_arena, pid, submessage_arena);
+    }
+    
+  } else {
+    
+  }
+  _impl_.pid_ = pid;
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.QueryProcedureRequest.pid)
+}
+
+// -------------------------------------------------------------------
+
+// ProcedureStateResponse
+
+// .greptime.v1.meta.ResponseHeader header = 1;
+inline bool ProcedureStateResponse::_internal_has_header() const {
+  return this != internal_default_instance() && _impl_.header_ != nullptr;
+}
+inline bool ProcedureStateResponse::has_header() const {
+  return _internal_has_header();
+}
+inline const ::greptime::v1::meta::ResponseHeader& ProcedureStateResponse::_internal_header() const {
+  const ::greptime::v1::meta::ResponseHeader* p = _impl_.header_;
+  return p != nullptr ? *p : reinterpret_cast<const ::greptime::v1::meta::ResponseHeader&>(
+      ::greptime::v1::meta::_ResponseHeader_default_instance_);
+}
+inline const ::greptime::v1::meta::ResponseHeader& ProcedureStateResponse::header() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.meta.ProcedureStateResponse.header)
+  return _internal_header();
+}
+inline void ProcedureStateResponse::unsafe_arena_set_allocated_header(
+    ::greptime::v1::meta::ResponseHeader* header) {
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.header_);
+  }
+  _impl_.header_ = header;
+  if (header) {
+    
+  } else {
+    
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.meta.ProcedureStateResponse.header)
+}
+inline ::greptime::v1::meta::ResponseHeader* ProcedureStateResponse::release_header() {
+  
+  ::greptime::v1::meta::ResponseHeader* temp = _impl_.header_;
+  _impl_.header_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old =  reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(temp);
+  temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
+  if (GetArenaForAllocation() == nullptr) { delete old; }
+#else  // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return temp;
+}
+inline ::greptime::v1::meta::ResponseHeader* ProcedureStateResponse::unsafe_arena_release_header() {
+  // @@protoc_insertion_point(field_release:greptime.v1.meta.ProcedureStateResponse.header)
+  
+  ::greptime::v1::meta::ResponseHeader* temp = _impl_.header_;
+  _impl_.header_ = nullptr;
+  return temp;
+}
+inline ::greptime::v1::meta::ResponseHeader* ProcedureStateResponse::_internal_mutable_header() {
+  
+  if (_impl_.header_ == nullptr) {
+    auto* p = CreateMaybeMessage<::greptime::v1::meta::ResponseHeader>(GetArenaForAllocation());
+    _impl_.header_ = p;
+  }
+  return _impl_.header_;
+}
+inline ::greptime::v1::meta::ResponseHeader* ProcedureStateResponse::mutable_header() {
+  ::greptime::v1::meta::ResponseHeader* _msg = _internal_mutable_header();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.meta.ProcedureStateResponse.header)
+  return _msg;
+}
+inline void ProcedureStateResponse::set_allocated_header(::greptime::v1::meta::ResponseHeader* header) {
+  ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
+  if (message_arena == nullptr) {
+    delete reinterpret_cast< ::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.header_);
+  }
+  if (header) {
+    ::PROTOBUF_NAMESPACE_ID::Arena* submessage_arena =
+        ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(
+                reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(header));
+    if (message_arena != submessage_arena) {
+      header = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
+          message_arena, header, submessage_arena);
+    }
+    
+  } else {
+    
+  }
+  _impl_.header_ = header;
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.ProcedureStateResponse.header)
+}
+
+// .greptime.v1.meta.ProcedureStatus status = 2;
+inline void ProcedureStateResponse::clear_status() {
+  _impl_.status_ = 0;
+}
+inline ::greptime::v1::meta::ProcedureStatus ProcedureStateResponse::_internal_status() const {
+  return static_cast< ::greptime::v1::meta::ProcedureStatus >(_impl_.status_);
+}
+inline ::greptime::v1::meta::ProcedureStatus ProcedureStateResponse::status() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.meta.ProcedureStateResponse.status)
+  return _internal_status();
+}
+inline void ProcedureStateResponse::_internal_set_status(::greptime::v1::meta::ProcedureStatus value) {
+  
+  _impl_.status_ = value;
+}
+inline void ProcedureStateResponse::set_status(::greptime::v1::meta::ProcedureStatus value) {
+  _internal_set_status(value);
+  // @@protoc_insertion_point(field_set:greptime.v1.meta.ProcedureStateResponse.status)
+}
+
+// string error = 3;
+inline void ProcedureStateResponse::clear_error() {
+  _impl_.error_.ClearToEmpty();
+}
+inline const std::string& ProcedureStateResponse::error() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.meta.ProcedureStateResponse.error)
+  return _internal_error();
+}
+template <typename ArgT0, typename... ArgT>
+inline PROTOBUF_ALWAYS_INLINE
+void ProcedureStateResponse::set_error(ArgT0&& arg0, ArgT... args) {
+ 
+ _impl_.error_.Set(static_cast<ArgT0 &&>(arg0), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:greptime.v1.meta.ProcedureStateResponse.error)
+}
+inline std::string* ProcedureStateResponse::mutable_error() {
+  std::string* _s = _internal_mutable_error();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.meta.ProcedureStateResponse.error)
+  return _s;
+}
+inline const std::string& ProcedureStateResponse::_internal_error() const {
+  return _impl_.error_.Get();
+}
+inline void ProcedureStateResponse::_internal_set_error(const std::string& value) {
+  
+  _impl_.error_.Set(value, GetArenaForAllocation());
+}
+inline std::string* ProcedureStateResponse::_internal_mutable_error() {
+  
+  return _impl_.error_.Mutable(GetArenaForAllocation());
+}
+inline std::string* ProcedureStateResponse::release_error() {
+  // @@protoc_insertion_point(field_release:greptime.v1.meta.ProcedureStateResponse.error)
+  return _impl_.error_.Release();
+}
+inline void ProcedureStateResponse::set_allocated_error(std::string* error) {
+  if (error != nullptr) {
+    
+  } else {
+    
+  }
+  _impl_.error_.SetAllocated(error, GetArenaForAllocation());
+#ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (_impl_.error_.IsDefault()) {
+    _impl_.error_.Set("", GetArenaForAllocation());
+  }
+#endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.ProcedureStateResponse.error)
+}
+
+#ifdef __GNUC__
+  #pragma GCC diagnostic pop
+#endif  // __GNUC__
+// -------------------------------------------------------------------
+
+
+// @@protoc_insertion_point(namespace_scope)
+
+}  // namespace meta
+}  // namespace v1
+}  // namespace greptime
+
+PROTOBUF_NAMESPACE_OPEN
+
+template <> struct is_proto_enum< ::greptime::v1::meta::ProcedureStatus> : ::std::true_type {};
+template <>
+inline const EnumDescriptor* GetEnumDescriptor< ::greptime::v1::meta::ProcedureStatus>() {
+  return ::greptime::v1::meta::ProcedureStatus_descriptor();
+}
+
+PROTOBUF_NAMESPACE_CLOSE
+
+// @@protoc_insertion_point(global_scope)
+
+#include <google/protobuf/port_undef.inc>
+#endif  // GOOGLE_PROTOBUF_INCLUDED_GOOGLE_PROTOBUF_INCLUDED_greptime_2fv1_2fmeta_2fprocedure_2eproto

c++/greptime/v1/meta/region.grpc.pb.cc

@@ -0,0 +1,29 @@
+// Generated by the gRPC C++ plugin.
+// If you make any local change, they will be lost.
+// source: greptime/v1/meta/region.proto
+
+#include "greptime/v1/meta/region.pb.h"
+#include "greptime/v1/meta/region.grpc.pb.h"
+
+#include <functional>
+#include <grpcpp/support/async_stream.h>
+#include <grpcpp/support/async_unary_call.h>
+#include <grpcpp/impl/channel_interface.h>
+#include <grpcpp/impl/client_unary_call.h>
+#include <grpcpp/support/client_callback.h>
+#include <grpcpp/support/message_allocator.h>
+#include <grpcpp/support/method_handler.h>
+#include <grpcpp/impl/rpc_service_method.h>
+#include <grpcpp/support/server_callback.h>
+#include <grpcpp/impl/codegen/server_callback_handlers.h>
+#include <grpcpp/server_context.h>
+#include <grpcpp/impl/service_type.h>
+#include <grpcpp/support/sync_stream.h>
+namespace greptime {
+namespace v1 {
+namespace meta {
+
+}  // namespace greptime
+}  // namespace v1
+}  // namespace meta
+

c++/greptime/v1/meta/region.grpc.pb.h

@@ -0,0 +1,52 @@
+// Generated by the gRPC C++ plugin.
+// If you make any local change, they will be lost.
+// source: greptime/v1/meta/region.proto
+// Original file comments:
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+#ifndef GRPC_greptime_2fv1_2fmeta_2fregion_2eproto__INCLUDED
+#define GRPC_greptime_2fv1_2fmeta_2fregion_2eproto__INCLUDED
+
+#include "greptime/v1/meta/region.pb.h"
+
+#include <functional>
+#include <grpcpp/generic/async_generic_service.h>
+#include <grpcpp/support/async_stream.h>
+#include <grpcpp/support/async_unary_call.h>
+#include <grpcpp/support/client_callback.h>
+#include <grpcpp/client_context.h>
+#include <grpcpp/completion_queue.h>
+#include <grpcpp/support/message_allocator.h>
+#include <grpcpp/support/method_handler.h>
+#include <grpcpp/impl/codegen/proto_utils.h>
+#include <grpcpp/impl/rpc_method.h>
+#include <grpcpp/support/server_callback.h>
+#include <grpcpp/impl/codegen/server_callback_handlers.h>
+#include <grpcpp/server_context.h>
+#include <grpcpp/impl/service_type.h>
+#include <grpcpp/impl/codegen/status.h>
+#include <grpcpp/support/stub_options.h>
+#include <grpcpp/support/sync_stream.h>
+
+namespace greptime {
+namespace v1 {
+namespace meta {
+
+}  // namespace meta
+}  // namespace v1
+}  // namespace greptime
+
+
+#endif  // GRPC_greptime_2fv1_2fmeta_2fregion_2eproto__INCLUDED

c++/greptime/v1/meta/region.pb.cc

@@ -0,0 +1,703 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: greptime/v1/meta/region.proto
+
+#include "greptime/v1/meta/region.pb.h"
+
+#include <algorithm>
+
+#include <google/protobuf/io/coded_stream.h>
+#include <google/protobuf/extension_set.h>
+#include <google/protobuf/wire_format_lite.h>
+#include <google/protobuf/descriptor.h>
+#include <google/protobuf/generated_message_reflection.h>
+#include <google/protobuf/reflection_ops.h>
+#include <google/protobuf/wire_format.h>
+// @@protoc_insertion_point(includes)
+#include <google/protobuf/port_def.inc>
+
+PROTOBUF_PRAGMA_INIT_SEG
+
+namespace _pb = ::PROTOBUF_NAMESPACE_ID;
+namespace _pbi = _pb::internal;
+
+namespace greptime {
+namespace v1 {
+namespace meta {
+PROTOBUF_CONSTEXPR MigrateRegionRequest::MigrateRegionRequest(
+    ::_pbi::ConstantInitialized): _impl_{
+    /*decltype(_impl_.header_)*/nullptr
+  , /*decltype(_impl_.region_id_)*/uint64_t{0u}
+  , /*decltype(_impl_.from_peer_)*/uint64_t{0u}
+  , /*decltype(_impl_.to_peer_)*/uint64_t{0u}
+  , /*decltype(_impl_.replay_timeout_secs_)*/0u
+  , /*decltype(_impl_._cached_size_)*/{}} {}
+struct MigrateRegionRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR MigrateRegionRequestDefaultTypeInternal()
+      : _instance(::_pbi::ConstantInitialized{}) {}
+  ~MigrateRegionRequestDefaultTypeInternal() {}
+  union {
+    MigrateRegionRequest _instance;
+  };
+};
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 MigrateRegionRequestDefaultTypeInternal _MigrateRegionRequest_default_instance_;
+PROTOBUF_CONSTEXPR MigrateRegionResponse::MigrateRegionResponse(
+    ::_pbi::ConstantInitialized): _impl_{
+    /*decltype(_impl_.header_)*/nullptr
+  , /*decltype(_impl_.pid_)*/nullptr
+  , /*decltype(_impl_._cached_size_)*/{}} {}
+struct MigrateRegionResponseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR MigrateRegionResponseDefaultTypeInternal()
+      : _instance(::_pbi::ConstantInitialized{}) {}
+  ~MigrateRegionResponseDefaultTypeInternal() {}
+  union {
+    MigrateRegionResponse _instance;
+  };
+};
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 MigrateRegionResponseDefaultTypeInternal _MigrateRegionResponse_default_instance_;
+}  // namespace meta
+}  // namespace v1
+}  // namespace greptime
+static ::_pb::Metadata file_level_metadata_greptime_2fv1_2fmeta_2fregion_2eproto[2];
+static constexpr ::_pb::EnumDescriptor const** file_level_enum_descriptors_greptime_2fv1_2fmeta_2fregion_2eproto = nullptr;
+static constexpr ::_pb::ServiceDescriptor const** file_level_service_descriptors_greptime_2fv1_2fmeta_2fregion_2eproto = nullptr;
+
+const uint32_t TableStruct_greptime_2fv1_2fmeta_2fregion_2eproto::offsets[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
+  ~0u,  // no _has_bits_
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::MigrateRegionRequest, _internal_metadata_),
+  ~0u,  // no _extensions_
+  ~0u,  // no _oneof_case_
+  ~0u,  // no _weak_field_map_
+  ~0u,  // no _inlined_string_donated_
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::MigrateRegionRequest, _impl_.header_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::MigrateRegionRequest, _impl_.region_id_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::MigrateRegionRequest, _impl_.from_peer_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::MigrateRegionRequest, _impl_.to_peer_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::MigrateRegionRequest, _impl_.replay_timeout_secs_),
+  ~0u,  // no _has_bits_
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::MigrateRegionResponse, _internal_metadata_),
+  ~0u,  // no _extensions_
+  ~0u,  // no _oneof_case_
+  ~0u,  // no _weak_field_map_
+  ~0u,  // no _inlined_string_donated_
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::MigrateRegionResponse, _impl_.header_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::MigrateRegionResponse, _impl_.pid_),
+};
+static const ::_pbi::MigrationSchema schemas[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
+  { 0, -1, -1, sizeof(::greptime::v1::meta::MigrateRegionRequest)},
+  { 11, -1, -1, sizeof(::greptime::v1::meta::MigrateRegionResponse)},
+};
+
+static const ::_pb::Message* const file_default_instances[] = {
+  &::greptime::v1::meta::_MigrateRegionRequest_default_instance_._instance,
+  &::greptime::v1::meta::_MigrateRegionResponse_default_instance_._instance,
+};
+
+const char descriptor_table_protodef_greptime_2fv1_2fmeta_2fregion_2eproto[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) =
+  "\n\035greptime/v1/meta/region.proto\022\020greptim"
+  "e.v1.meta\032\035greptime/v1/meta/common.proto"
+  "\"\233\001\n\024MigrateRegionRequest\022/\n\006header\030\001 \001("
+  "\0132\037.greptime.v1.meta.RequestHeader\022\021\n\tre"
+  "gion_id\030\003 \001(\004\022\021\n\tfrom_peer\030\004 \001(\004\022\017\n\007to_p"
+  "eer\030\005 \001(\004\022\033\n\023replay_timeout_secs\030\006 \001(\r\"u"
+  "\n\025MigrateRegionResponse\0220\n\006header\030\001 \001(\0132"
+  " .greptime.v1.meta.ResponseHeader\022*\n\003pid"
+  "\030\002 \001(\0132\035.greptime.v1.meta.ProcedureIdB<Z"
+  ":github.com/GreptimeTeam/greptime-proto/"
+  "go/greptime/v1/metab\006proto3"
+  ;
+static const ::_pbi::DescriptorTable* const descriptor_table_greptime_2fv1_2fmeta_2fregion_2eproto_deps[1] = {
+  &::descriptor_table_greptime_2fv1_2fmeta_2fcommon_2eproto,
+};
+static ::_pbi::once_flag descriptor_table_greptime_2fv1_2fmeta_2fregion_2eproto_once;
+const ::_pbi::DescriptorTable descriptor_table_greptime_2fv1_2fmeta_2fregion_2eproto = {
+    false, false, 427, descriptor_table_protodef_greptime_2fv1_2fmeta_2fregion_2eproto,
+    "greptime/v1/meta/region.proto",
+    &descriptor_table_greptime_2fv1_2fmeta_2fregion_2eproto_once, descriptor_table_greptime_2fv1_2fmeta_2fregion_2eproto_deps, 1, 2,
+    schemas, file_default_instances, TableStruct_greptime_2fv1_2fmeta_2fregion_2eproto::offsets,
+    file_level_metadata_greptime_2fv1_2fmeta_2fregion_2eproto, file_level_enum_descriptors_greptime_2fv1_2fmeta_2fregion_2eproto,
+    file_level_service_descriptors_greptime_2fv1_2fmeta_2fregion_2eproto,
+};
+PROTOBUF_ATTRIBUTE_WEAK const ::_pbi::DescriptorTable* descriptor_table_greptime_2fv1_2fmeta_2fregion_2eproto_getter() {
+  return &descriptor_table_greptime_2fv1_2fmeta_2fregion_2eproto;
+}
+
+// Force running AddDescriptors() at dynamic initialization time.
+PROTOBUF_ATTRIBUTE_INIT_PRIORITY2 static ::_pbi::AddDescriptorsRunner dynamic_init_dummy_greptime_2fv1_2fmeta_2fregion_2eproto(&descriptor_table_greptime_2fv1_2fmeta_2fregion_2eproto);
+namespace greptime {
+namespace v1 {
+namespace meta {
+
+// ===================================================================
+
+class MigrateRegionRequest::_Internal {
+ public:
+  static const ::greptime::v1::meta::RequestHeader& header(const MigrateRegionRequest* msg);
+};
+
+const ::greptime::v1::meta::RequestHeader&
+MigrateRegionRequest::_Internal::header(const MigrateRegionRequest* msg) {
+  return *msg->_impl_.header_;
+}
+void MigrateRegionRequest::clear_header() {
+  if (GetArenaForAllocation() == nullptr && _impl_.header_ != nullptr) {
+    delete _impl_.header_;
+  }
+  _impl_.header_ = nullptr;
+}
+MigrateRegionRequest::MigrateRegionRequest(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+                         bool is_message_owned)
+  : ::PROTOBUF_NAMESPACE_ID::Message(arena, is_message_owned) {
+  SharedCtor(arena, is_message_owned);
+  // @@protoc_insertion_point(arena_constructor:greptime.v1.meta.MigrateRegionRequest)
+}
+MigrateRegionRequest::MigrateRegionRequest(const MigrateRegionRequest& from)
+  : ::PROTOBUF_NAMESPACE_ID::Message() {
+  MigrateRegionRequest* const _this = this; (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.header_){nullptr}
+    , decltype(_impl_.region_id_){}
+    , decltype(_impl_.from_peer_){}
+    , decltype(_impl_.to_peer_){}
+    , decltype(_impl_.replay_timeout_secs_){}
+    , /*decltype(_impl_._cached_size_)*/{}};
+
+  _internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
+  if (from._internal_has_header()) {
+    _this->_impl_.header_ = new ::greptime::v1::meta::RequestHeader(*from._impl_.header_);
+  }
+  ::memcpy(&_impl_.region_id_, &from._impl_.region_id_,
+    static_cast<size_t>(reinterpret_cast<char*>(&_impl_.replay_timeout_secs_) -
+    reinterpret_cast<char*>(&_impl_.region_id_)) + sizeof(_impl_.replay_timeout_secs_));
+  // @@protoc_insertion_point(copy_constructor:greptime.v1.meta.MigrateRegionRequest)
+}
+
+inline void MigrateRegionRequest::SharedCtor(
+    ::_pb::Arena* arena, bool is_message_owned) {
+  (void)arena;
+  (void)is_message_owned;
+  new (&_impl_) Impl_{
+      decltype(_impl_.header_){nullptr}
+    , decltype(_impl_.region_id_){uint64_t{0u}}
+    , decltype(_impl_.from_peer_){uint64_t{0u}}
+    , decltype(_impl_.to_peer_){uint64_t{0u}}
+    , decltype(_impl_.replay_timeout_secs_){0u}
+    , /*decltype(_impl_._cached_size_)*/{}
+  };
+}
+
+MigrateRegionRequest::~MigrateRegionRequest() {
+  // @@protoc_insertion_point(destructor:greptime.v1.meta.MigrateRegionRequest)
+  if (auto *arena = _internal_metadata_.DeleteReturnArena<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>()) {
+  (void)arena;
+    return;
+  }
+  SharedDtor();
+}
+
+inline void MigrateRegionRequest::SharedDtor() {
+  GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
+  if (this != internal_default_instance()) delete _impl_.header_;
+}
+
+void MigrateRegionRequest::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+void MigrateRegionRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:greptime.v1.meta.MigrateRegionRequest)
+  uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  if (GetArenaForAllocation() == nullptr && _impl_.header_ != nullptr) {
+    delete _impl_.header_;
+  }
+  _impl_.header_ = nullptr;
+  ::memset(&_impl_.region_id_, 0, static_cast<size_t>(
+      reinterpret_cast<char*>(&_impl_.replay_timeout_secs_) -
+      reinterpret_cast<char*>(&_impl_.region_id_)) + sizeof(_impl_.replay_timeout_secs_));
+  _internal_metadata_.Clear<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>();
+}
+
+const char* MigrateRegionRequest::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx) {
+#define CHK_(x) if (PROTOBUF_PREDICT_FALSE(!(x))) goto failure
+  while (!ctx->Done(&ptr)) {
+    uint32_t tag;
+    ptr = ::_pbi::ReadTag(ptr, &tag);
+    switch (tag >> 3) {
+      // .greptime.v1.meta.RequestHeader header = 1;
+      case 1:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 10)) {
+          ptr = ctx->ParseMessage(_internal_mutable_header(), ptr);
+          CHK_(ptr);
+        } else
+          goto handle_unusual;
+        continue;
+      // uint64 region_id = 3;
+      case 3:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 24)) {
+          _impl_.region_id_ = ::PROTOBUF_NAMESPACE_ID::internal::ReadVarint64(&ptr);
+          CHK_(ptr);
+        } else
+          goto handle_unusual;
+        continue;
+      // uint64 from_peer = 4;
+      case 4:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 32)) {
+          _impl_.from_peer_ = ::PROTOBUF_NAMESPACE_ID::internal::ReadVarint64(&ptr);
+          CHK_(ptr);
+        } else
+          goto handle_unusual;
+        continue;
+      // uint64 to_peer = 5;
+      case 5:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 40)) {
+          _impl_.to_peer_ = ::PROTOBUF_NAMESPACE_ID::internal::ReadVarint64(&ptr);
+          CHK_(ptr);
+        } else
+          goto handle_unusual;
+        continue;
+      // uint32 replay_timeout_secs = 6;
+      case 6:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 48)) {
+          _impl_.replay_timeout_secs_ = ::PROTOBUF_NAMESPACE_ID::internal::ReadVarint32(&ptr);
+          CHK_(ptr);
+        } else
+          goto handle_unusual;
+        continue;
+      default:
+        goto handle_unusual;
+    }  // switch
+  handle_unusual:
+    if ((tag == 0) || ((tag & 7) == 4)) {
+      CHK_(ptr);
+      ctx->SetLastTag(tag);
+      goto message_done;
+    }
+    ptr = UnknownFieldParse(
+        tag,
+        _internal_metadata_.mutable_unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(),
+        ptr, ctx);
+    CHK_(ptr != nullptr);
+  }  // while
+message_done:
+  return ptr;
+failure:
+  ptr = nullptr;
+  goto message_done;
+#undef CHK_
+}
+
+uint8_t* MigrateRegionRequest::_InternalSerialize(
+    uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:greptime.v1.meta.MigrateRegionRequest)
+  uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  // .greptime.v1.meta.RequestHeader header = 1;
+  if (this->_internal_has_header()) {
+    target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
+      InternalWriteMessage(1, _Internal::header(this),
+        _Internal::header(this).GetCachedSize(), target, stream);
+  }
+
+  // uint64 region_id = 3;
+  if (this->_internal_region_id() != 0) {
+    target = stream->EnsureSpace(target);
+    target = ::_pbi::WireFormatLite::WriteUInt64ToArray(3, this->_internal_region_id(), target);
+  }
+
+  // uint64 from_peer = 4;
+  if (this->_internal_from_peer() != 0) {
+    target = stream->EnsureSpace(target);
+    target = ::_pbi::WireFormatLite::WriteUInt64ToArray(4, this->_internal_from_peer(), target);
+  }
+
+  // uint64 to_peer = 5;
+  if (this->_internal_to_peer() != 0) {
+    target = stream->EnsureSpace(target);
+    target = ::_pbi::WireFormatLite::WriteUInt64ToArray(5, this->_internal_to_peer(), target);
+  }
+
+  // uint32 replay_timeout_secs = 6;
+  if (this->_internal_replay_timeout_secs() != 0) {
+    target = stream->EnsureSpace(target);
+    target = ::_pbi::WireFormatLite::WriteUInt32ToArray(6, this->_internal_replay_timeout_secs(), target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target = ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+        _internal_metadata_.unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(::PROTOBUF_NAMESPACE_ID::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:greptime.v1.meta.MigrateRegionRequest)
+  return target;
+}
+
+size_t MigrateRegionRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:greptime.v1.meta.MigrateRegionRequest)
+  size_t total_size = 0;
+
+  uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // .greptime.v1.meta.RequestHeader header = 1;
+  if (this->_internal_has_header()) {
+    total_size += 1 +
+      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(
+        *_impl_.header_);
+  }
+
+  // uint64 region_id = 3;
+  if (this->_internal_region_id() != 0) {
+    total_size += ::_pbi::WireFormatLite::UInt64SizePlusOne(this->_internal_region_id());
+  }
+
+  // uint64 from_peer = 4;
+  if (this->_internal_from_peer() != 0) {
+    total_size += ::_pbi::WireFormatLite::UInt64SizePlusOne(this->_internal_from_peer());
+  }
+
+  // uint64 to_peer = 5;
+  if (this->_internal_to_peer() != 0) {
+    total_size += ::_pbi::WireFormatLite::UInt64SizePlusOne(this->_internal_to_peer());
+  }
+
+  // uint32 replay_timeout_secs = 6;
+  if (this->_internal_replay_timeout_secs() != 0) {
+    total_size += ::_pbi::WireFormatLite::UInt32SizePlusOne(this->_internal_replay_timeout_secs());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData MigrateRegionRequest::_class_data_ = {
+    ::PROTOBUF_NAMESPACE_ID::Message::CopyWithSourceCheck,
+    MigrateRegionRequest::MergeImpl
+};
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*MigrateRegionRequest::GetClassData() const { return &_class_data_; }
+
+
+void MigrateRegionRequest::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg) {
+  auto* const _this = static_cast<MigrateRegionRequest*>(&to_msg);
+  auto& from = static_cast<const MigrateRegionRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:greptime.v1.meta.MigrateRegionRequest)
+  GOOGLE_DCHECK_NE(&from, _this);
+  uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (from._internal_has_header()) {
+    _this->_internal_mutable_header()->::greptime::v1::meta::RequestHeader::MergeFrom(
+        from._internal_header());
+  }
+  if (from._internal_region_id() != 0) {
+    _this->_internal_set_region_id(from._internal_region_id());
+  }
+  if (from._internal_from_peer() != 0) {
+    _this->_internal_set_from_peer(from._internal_from_peer());
+  }
+  if (from._internal_to_peer() != 0) {
+    _this->_internal_set_to_peer(from._internal_to_peer());
+  }
+  if (from._internal_replay_timeout_secs() != 0) {
+    _this->_internal_set_replay_timeout_secs(from._internal_replay_timeout_secs());
+  }
+  _this->_internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void MigrateRegionRequest::CopyFrom(const MigrateRegionRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:greptime.v1.meta.MigrateRegionRequest)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool MigrateRegionRequest::IsInitialized() const {
+  return true;
+}
+
+void MigrateRegionRequest::InternalSwap(MigrateRegionRequest* other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::PROTOBUF_NAMESPACE_ID::internal::memswap<
+      PROTOBUF_FIELD_OFFSET(MigrateRegionRequest, _impl_.replay_timeout_secs_)
+      + sizeof(MigrateRegionRequest::_impl_.replay_timeout_secs_)
+      - PROTOBUF_FIELD_OFFSET(MigrateRegionRequest, _impl_.header_)>(
+          reinterpret_cast<char*>(&_impl_.header_),
+          reinterpret_cast<char*>(&other->_impl_.header_));
+}
+
+::PROTOBUF_NAMESPACE_ID::Metadata MigrateRegionRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_greptime_2fv1_2fmeta_2fregion_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fregion_2eproto_once,
+      file_level_metadata_greptime_2fv1_2fmeta_2fregion_2eproto[0]);
+}
+
+// ===================================================================
+
+class MigrateRegionResponse::_Internal {
+ public:
+  static const ::greptime::v1::meta::ResponseHeader& header(const MigrateRegionResponse* msg);
+  static const ::greptime::v1::meta::ProcedureId& pid(const MigrateRegionResponse* msg);
+};
+
+const ::greptime::v1::meta::ResponseHeader&
+MigrateRegionResponse::_Internal::header(const MigrateRegionResponse* msg) {
+  return *msg->_impl_.header_;
+}
+const ::greptime::v1::meta::ProcedureId&
+MigrateRegionResponse::_Internal::pid(const MigrateRegionResponse* msg) {
+  return *msg->_impl_.pid_;
+}
+void MigrateRegionResponse::clear_header() {
+  if (GetArenaForAllocation() == nullptr && _impl_.header_ != nullptr) {
+    delete _impl_.header_;
+  }
+  _impl_.header_ = nullptr;
+}
+void MigrateRegionResponse::clear_pid() {
+  if (GetArenaForAllocation() == nullptr && _impl_.pid_ != nullptr) {
+    delete _impl_.pid_;
+  }
+  _impl_.pid_ = nullptr;
+}
+MigrateRegionResponse::MigrateRegionResponse(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+                         bool is_message_owned)
+  : ::PROTOBUF_NAMESPACE_ID::Message(arena, is_message_owned) {
+  SharedCtor(arena, is_message_owned);
+  // @@protoc_insertion_point(arena_constructor:greptime.v1.meta.MigrateRegionResponse)
+}
+MigrateRegionResponse::MigrateRegionResponse(const MigrateRegionResponse& from)
+  : ::PROTOBUF_NAMESPACE_ID::Message() {
+  MigrateRegionResponse* const _this = this; (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.header_){nullptr}
+    , decltype(_impl_.pid_){nullptr}
+    , /*decltype(_impl_._cached_size_)*/{}};
+
+  _internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
+  if (from._internal_has_header()) {
+    _this->_impl_.header_ = new ::greptime::v1::meta::ResponseHeader(*from._impl_.header_);
+  }
+  if (from._internal_has_pid()) {
+    _this->_impl_.pid_ = new ::greptime::v1::meta::ProcedureId(*from._impl_.pid_);
+  }
+  // @@protoc_insertion_point(copy_constructor:greptime.v1.meta.MigrateRegionResponse)
+}
+
+inline void MigrateRegionResponse::SharedCtor(
+    ::_pb::Arena* arena, bool is_message_owned) {
+  (void)arena;
+  (void)is_message_owned;
+  new (&_impl_) Impl_{
+      decltype(_impl_.header_){nullptr}
+    , decltype(_impl_.pid_){nullptr}
+    , /*decltype(_impl_._cached_size_)*/{}
+  };
+}
+
+MigrateRegionResponse::~MigrateRegionResponse() {
+  // @@protoc_insertion_point(destructor:greptime.v1.meta.MigrateRegionResponse)
+  if (auto *arena = _internal_metadata_.DeleteReturnArena<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>()) {
+  (void)arena;
+    return;
+  }
+  SharedDtor();
+}
+
+inline void MigrateRegionResponse::SharedDtor() {
+  GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
+  if (this != internal_default_instance()) delete _impl_.header_;
+  if (this != internal_default_instance()) delete _impl_.pid_;
+}
+
+void MigrateRegionResponse::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+void MigrateRegionResponse::Clear() {
+// @@protoc_insertion_point(message_clear_start:greptime.v1.meta.MigrateRegionResponse)
+  uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  if (GetArenaForAllocation() == nullptr && _impl_.header_ != nullptr) {
+    delete _impl_.header_;
+  }
+  _impl_.header_ = nullptr;
+  if (GetArenaForAllocation() == nullptr && _impl_.pid_ != nullptr) {
+    delete _impl_.pid_;
+  }
+  _impl_.pid_ = nullptr;
+  _internal_metadata_.Clear<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>();
+}
+
+const char* MigrateRegionResponse::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx) {
+#define CHK_(x) if (PROTOBUF_PREDICT_FALSE(!(x))) goto failure
+  while (!ctx->Done(&ptr)) {
+    uint32_t tag;
+    ptr = ::_pbi::ReadTag(ptr, &tag);
+    switch (tag >> 3) {
+      // .greptime.v1.meta.ResponseHeader header = 1;
+      case 1:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 10)) {
+          ptr = ctx->ParseMessage(_internal_mutable_header(), ptr);
+          CHK_(ptr);
+        } else
+          goto handle_unusual;
+        continue;
+      // .greptime.v1.meta.ProcedureId pid = 2;
+      case 2:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 18)) {
+          ptr = ctx->ParseMessage(_internal_mutable_pid(), ptr);
+          CHK_(ptr);
+        } else
+          goto handle_unusual;
+        continue;
+      default:
+        goto handle_unusual;
+    }  // switch
+  handle_unusual:
+    if ((tag == 0) || ((tag & 7) == 4)) {
+      CHK_(ptr);
+      ctx->SetLastTag(tag);
+      goto message_done;
+    }
+    ptr = UnknownFieldParse(
+        tag,
+        _internal_metadata_.mutable_unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(),
+        ptr, ctx);
+    CHK_(ptr != nullptr);
+  }  // while
+message_done:
+  return ptr;
+failure:
+  ptr = nullptr;
+  goto message_done;
+#undef CHK_
+}
+
+uint8_t* MigrateRegionResponse::_InternalSerialize(
+    uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:greptime.v1.meta.MigrateRegionResponse)
+  uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  // .greptime.v1.meta.ResponseHeader header = 1;
+  if (this->_internal_has_header()) {
+    target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
+      InternalWriteMessage(1, _Internal::header(this),
+        _Internal::header(this).GetCachedSize(), target, stream);
+  }
+
+  // .greptime.v1.meta.ProcedureId pid = 2;
+  if (this->_internal_has_pid()) {
+    target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
+      InternalWriteMessage(2, _Internal::pid(this),
+        _Internal::pid(this).GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target = ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+        _internal_metadata_.unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(::PROTOBUF_NAMESPACE_ID::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:greptime.v1.meta.MigrateRegionResponse)
+  return target;
+}
+
+size_t MigrateRegionResponse::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:greptime.v1.meta.MigrateRegionResponse)
+  size_t total_size = 0;
+
+  uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // .greptime.v1.meta.ResponseHeader header = 1;
+  if (this->_internal_has_header()) {
+    total_size += 1 +
+      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(
+        *_impl_.header_);
+  }
+
+  // .greptime.v1.meta.ProcedureId pid = 2;
+  if (this->_internal_has_pid()) {
+    total_size += 1 +
+      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(
+        *_impl_.pid_);
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData MigrateRegionResponse::_class_data_ = {
+    ::PROTOBUF_NAMESPACE_ID::Message::CopyWithSourceCheck,
+    MigrateRegionResponse::MergeImpl
+};
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*MigrateRegionResponse::GetClassData() const { return &_class_data_; }
+
+
+void MigrateRegionResponse::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg) {
+  auto* const _this = static_cast<MigrateRegionResponse*>(&to_msg);
+  auto& from = static_cast<const MigrateRegionResponse&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:greptime.v1.meta.MigrateRegionResponse)
+  GOOGLE_DCHECK_NE(&from, _this);
+  uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (from._internal_has_header()) {
+    _this->_internal_mutable_header()->::greptime::v1::meta::ResponseHeader::MergeFrom(
+        from._internal_header());
+  }
+  if (from._internal_has_pid()) {
+    _this->_internal_mutable_pid()->::greptime::v1::meta::ProcedureId::MergeFrom(
+        from._internal_pid());
+  }
+  _this->_internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void MigrateRegionResponse::CopyFrom(const MigrateRegionResponse& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:greptime.v1.meta.MigrateRegionResponse)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool MigrateRegionResponse::IsInitialized() const {
+  return true;
+}
+
+void MigrateRegionResponse::InternalSwap(MigrateRegionResponse* other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::PROTOBUF_NAMESPACE_ID::internal::memswap<
+      PROTOBUF_FIELD_OFFSET(MigrateRegionResponse, _impl_.pid_)
+      + sizeof(MigrateRegionResponse::_impl_.pid_)
+      - PROTOBUF_FIELD_OFFSET(MigrateRegionResponse, _impl_.header_)>(
+          reinterpret_cast<char*>(&_impl_.header_),
+          reinterpret_cast<char*>(&other->_impl_.header_));
+}
+
+::PROTOBUF_NAMESPACE_ID::Metadata MigrateRegionResponse::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_greptime_2fv1_2fmeta_2fregion_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fregion_2eproto_once,
+      file_level_metadata_greptime_2fv1_2fmeta_2fregion_2eproto[1]);
+}
+
+// @@protoc_insertion_point(namespace_scope)
+}  // namespace meta
+}  // namespace v1
+}  // namespace greptime
+PROTOBUF_NAMESPACE_OPEN
+template<> PROTOBUF_NOINLINE ::greptime::v1::meta::MigrateRegionRequest*
+Arena::CreateMaybeMessage< ::greptime::v1::meta::MigrateRegionRequest >(Arena* arena) {
+  return Arena::CreateMessageInternal< ::greptime::v1::meta::MigrateRegionRequest >(arena);
+}
+template<> PROTOBUF_NOINLINE ::greptime::v1::meta::MigrateRegionResponse*
+Arena::CreateMaybeMessage< ::greptime::v1::meta::MigrateRegionResponse >(Arena* arena) {
+  return Arena::CreateMessageInternal< ::greptime::v1::meta::MigrateRegionResponse >(arena);
+}
+PROTOBUF_NAMESPACE_CLOSE
+
+// @@protoc_insertion_point(global_scope)
+#include <google/protobuf/port_undef.inc>

c++/greptime/v1/meta/region.pb.h

@@ -0,0 +1,811 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: greptime/v1/meta/region.proto
+
+#ifndef GOOGLE_PROTOBUF_INCLUDED_greptime_2fv1_2fmeta_2fregion_2eproto
+#define GOOGLE_PROTOBUF_INCLUDED_greptime_2fv1_2fmeta_2fregion_2eproto
+
+#include <limits>
+#include <string>
+
+#include <google/protobuf/port_def.inc>
+#if PROTOBUF_VERSION < 3021000
+#error This file was generated by a newer version of protoc which is
+#error incompatible with your Protocol Buffer headers. Please update
+#error your headers.
+#endif
+#if 3021006 < PROTOBUF_MIN_PROTOC_VERSION
+#error This file was generated by an older version of protoc which is
+#error incompatible with your Protocol Buffer headers. Please
+#error regenerate this file with a newer version of protoc.
+#endif
+
+#include <google/protobuf/port_undef.inc>
+#include <google/protobuf/io/coded_stream.h>
+#include <google/protobuf/arena.h>
+#include <google/protobuf/arenastring.h>
+#include <google/protobuf/generated_message_util.h>
+#include <google/protobuf/metadata_lite.h>
+#include <google/protobuf/generated_message_reflection.h>
+#include <google/protobuf/message.h>
+#include <google/protobuf/repeated_field.h>  // IWYU pragma: export
+#include <google/protobuf/extension_set.h>  // IWYU pragma: export
+#include <google/protobuf/unknown_field_set.h>
+#include "greptime/v1/meta/common.pb.h"
+// @@protoc_insertion_point(includes)
+#include <google/protobuf/port_def.inc>
+#define PROTOBUF_INTERNAL_EXPORT_greptime_2fv1_2fmeta_2fregion_2eproto
+PROTOBUF_NAMESPACE_OPEN
+namespace internal {
+class AnyMetadata;
+}  // namespace internal
+PROTOBUF_NAMESPACE_CLOSE
+
+// Internal implementation detail -- do not use these members.
+struct TableStruct_greptime_2fv1_2fmeta_2fregion_2eproto {
+  static const uint32_t offsets[];
+};
+extern const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_greptime_2fv1_2fmeta_2fregion_2eproto;
+namespace greptime {
+namespace v1 {
+namespace meta {
+class MigrateRegionRequest;
+struct MigrateRegionRequestDefaultTypeInternal;
+extern MigrateRegionRequestDefaultTypeInternal _MigrateRegionRequest_default_instance_;
+class MigrateRegionResponse;
+struct MigrateRegionResponseDefaultTypeInternal;
+extern MigrateRegionResponseDefaultTypeInternal _MigrateRegionResponse_default_instance_;
+}  // namespace meta
+}  // namespace v1
+}  // namespace greptime
+PROTOBUF_NAMESPACE_OPEN
+template<> ::greptime::v1::meta::MigrateRegionRequest* Arena::CreateMaybeMessage<::greptime::v1::meta::MigrateRegionRequest>(Arena*);
+template<> ::greptime::v1::meta::MigrateRegionResponse* Arena::CreateMaybeMessage<::greptime::v1::meta::MigrateRegionResponse>(Arena*);
+PROTOBUF_NAMESPACE_CLOSE
+namespace greptime {
+namespace v1 {
+namespace meta {
+
+// ===================================================================
+
+class MigrateRegionRequest final :
+    public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:greptime.v1.meta.MigrateRegionRequest) */ {
+ public:
+  inline MigrateRegionRequest() : MigrateRegionRequest(nullptr) {}
+  ~MigrateRegionRequest() override;
+  explicit PROTOBUF_CONSTEXPR MigrateRegionRequest(::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized);
+
+  MigrateRegionRequest(const MigrateRegionRequest& from);
+  MigrateRegionRequest(MigrateRegionRequest&& from) noexcept
+    : MigrateRegionRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline MigrateRegionRequest& operator=(const MigrateRegionRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline MigrateRegionRequest& operator=(MigrateRegionRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const MigrateRegionRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const MigrateRegionRequest* internal_default_instance() {
+    return reinterpret_cast<const MigrateRegionRequest*>(
+               &_MigrateRegionRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    0;
+
+  friend void swap(MigrateRegionRequest& a, MigrateRegionRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(MigrateRegionRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::PROTOBUF_NAMESPACE_ID::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(MigrateRegionRequest* other) {
+    if (other == this) return;
+    GOOGLE_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  MigrateRegionRequest* New(::PROTOBUF_NAMESPACE_ID::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<MigrateRegionRequest>(arena);
+  }
+  using ::PROTOBUF_NAMESPACE_ID::Message::CopyFrom;
+  void CopyFrom(const MigrateRegionRequest& from);
+  using ::PROTOBUF_NAMESPACE_ID::Message::MergeFrom;
+  void MergeFrom( const MigrateRegionRequest& from) {
+    MigrateRegionRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::PROTOBUF_NAMESPACE_ID::internal::ParseContext* ctx) final;
+  uint8_t* _InternalSerialize(
+      uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::PROTOBUF_NAMESPACE_ID::Arena* arena, bool is_message_owned);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(MigrateRegionRequest* other);
+
+  private:
+  friend class ::PROTOBUF_NAMESPACE_ID::internal::AnyMetadata;
+  static ::PROTOBUF_NAMESPACE_ID::StringPiece FullMessageName() {
+    return "greptime.v1.meta.MigrateRegionRequest";
+  }
+  protected:
+  explicit MigrateRegionRequest(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+                       bool is_message_owned = false);
+  public:
+
+  static const ClassData _class_data_;
+  const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*GetClassData() const final;
+
+  ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kHeaderFieldNumber = 1,
+    kRegionIdFieldNumber = 3,
+    kFromPeerFieldNumber = 4,
+    kToPeerFieldNumber = 5,
+    kReplayTimeoutSecsFieldNumber = 6,
+  };
+  // .greptime.v1.meta.RequestHeader header = 1;
+  bool has_header() const;
+  private:
+  bool _internal_has_header() const;
+  public:
+  void clear_header();
+  const ::greptime::v1::meta::RequestHeader& header() const;
+  PROTOBUF_NODISCARD ::greptime::v1::meta::RequestHeader* release_header();
+  ::greptime::v1::meta::RequestHeader* mutable_header();
+  void set_allocated_header(::greptime::v1::meta::RequestHeader* header);
+  private:
+  const ::greptime::v1::meta::RequestHeader& _internal_header() const;
+  ::greptime::v1::meta::RequestHeader* _internal_mutable_header();
+  public:
+  void unsafe_arena_set_allocated_header(
+      ::greptime::v1::meta::RequestHeader* header);
+  ::greptime::v1::meta::RequestHeader* unsafe_arena_release_header();
+
+  // uint64 region_id = 3;
+  void clear_region_id();
+  uint64_t region_id() const;
+  void set_region_id(uint64_t value);
+  private:
+  uint64_t _internal_region_id() const;
+  void _internal_set_region_id(uint64_t value);
+  public:
+
+  // uint64 from_peer = 4;
+  void clear_from_peer();
+  uint64_t from_peer() const;
+  void set_from_peer(uint64_t value);
+  private:
+  uint64_t _internal_from_peer() const;
+  void _internal_set_from_peer(uint64_t value);
+  public:
+
+  // uint64 to_peer = 5;
+  void clear_to_peer();
+  uint64_t to_peer() const;
+  void set_to_peer(uint64_t value);
+  private:
+  uint64_t _internal_to_peer() const;
+  void _internal_set_to_peer(uint64_t value);
+  public:
+
+  // uint32 replay_timeout_secs = 6;
+  void clear_replay_timeout_secs();
+  uint32_t replay_timeout_secs() const;
+  void set_replay_timeout_secs(uint32_t value);
+  private:
+  uint32_t _internal_replay_timeout_secs() const;
+  void _internal_set_replay_timeout_secs(uint32_t value);
+  public:
+
+  // @@protoc_insertion_point(class_scope:greptime.v1.meta.MigrateRegionRequest)
+ private:
+  class _Internal;
+
+  template <typename T> friend class ::PROTOBUF_NAMESPACE_ID::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::greptime::v1::meta::RequestHeader* header_;
+    uint64_t region_id_;
+    uint64_t from_peer_;
+    uint64_t to_peer_;
+    uint32_t replay_timeout_secs_;
+    mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_greptime_2fv1_2fmeta_2fregion_2eproto;
+};
+// -------------------------------------------------------------------
+
+class MigrateRegionResponse final :
+    public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:greptime.v1.meta.MigrateRegionResponse) */ {
+ public:
+  inline MigrateRegionResponse() : MigrateRegionResponse(nullptr) {}
+  ~MigrateRegionResponse() override;
+  explicit PROTOBUF_CONSTEXPR MigrateRegionResponse(::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized);
+
+  MigrateRegionResponse(const MigrateRegionResponse& from);
+  MigrateRegionResponse(MigrateRegionResponse&& from) noexcept
+    : MigrateRegionResponse() {
+    *this = ::std::move(from);
+  }
+
+  inline MigrateRegionResponse& operator=(const MigrateRegionResponse& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline MigrateRegionResponse& operator=(MigrateRegionResponse&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const MigrateRegionResponse& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const MigrateRegionResponse* internal_default_instance() {
+    return reinterpret_cast<const MigrateRegionResponse*>(
+               &_MigrateRegionResponse_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    1;
+
+  friend void swap(MigrateRegionResponse& a, MigrateRegionResponse& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(MigrateRegionResponse* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::PROTOBUF_NAMESPACE_ID::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(MigrateRegionResponse* other) {
+    if (other == this) return;
+    GOOGLE_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  MigrateRegionResponse* New(::PROTOBUF_NAMESPACE_ID::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<MigrateRegionResponse>(arena);
+  }
+  using ::PROTOBUF_NAMESPACE_ID::Message::CopyFrom;
+  void CopyFrom(const MigrateRegionResponse& from);
+  using ::PROTOBUF_NAMESPACE_ID::Message::MergeFrom;
+  void MergeFrom( const MigrateRegionResponse& from) {
+    MigrateRegionResponse::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::PROTOBUF_NAMESPACE_ID::internal::ParseContext* ctx) final;
+  uint8_t* _InternalSerialize(
+      uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::PROTOBUF_NAMESPACE_ID::Arena* arena, bool is_message_owned);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(MigrateRegionResponse* other);
+
+  private:
+  friend class ::PROTOBUF_NAMESPACE_ID::internal::AnyMetadata;
+  static ::PROTOBUF_NAMESPACE_ID::StringPiece FullMessageName() {
+    return "greptime.v1.meta.MigrateRegionResponse";
+  }
+  protected:
+  explicit MigrateRegionResponse(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+                       bool is_message_owned = false);
+  public:
+
+  static const ClassData _class_data_;
+  const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*GetClassData() const final;
+
+  ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kHeaderFieldNumber = 1,
+    kPidFieldNumber = 2,
+  };
+  // .greptime.v1.meta.ResponseHeader header = 1;
+  bool has_header() const;
+  private:
+  bool _internal_has_header() const;
+  public:
+  void clear_header();
+  const ::greptime::v1::meta::ResponseHeader& header() const;
+  PROTOBUF_NODISCARD ::greptime::v1::meta::ResponseHeader* release_header();
+  ::greptime::v1::meta::ResponseHeader* mutable_header();
+  void set_allocated_header(::greptime::v1::meta::ResponseHeader* header);
+  private:
+  const ::greptime::v1::meta::ResponseHeader& _internal_header() const;
+  ::greptime::v1::meta::ResponseHeader* _internal_mutable_header();
+  public:
+  void unsafe_arena_set_allocated_header(
+      ::greptime::v1::meta::ResponseHeader* header);
+  ::greptime::v1::meta::ResponseHeader* unsafe_arena_release_header();
+
+  // .greptime.v1.meta.ProcedureId pid = 2;
+  bool has_pid() const;
+  private:
+  bool _internal_has_pid() const;
+  public:
+  void clear_pid();
+  const ::greptime::v1::meta::ProcedureId& pid() const;
+  PROTOBUF_NODISCARD ::greptime::v1::meta::ProcedureId* release_pid();
+  ::greptime::v1::meta::ProcedureId* mutable_pid();
+  void set_allocated_pid(::greptime::v1::meta::ProcedureId* pid);
+  private:
+  const ::greptime::v1::meta::ProcedureId& _internal_pid() const;
+  ::greptime::v1::meta::ProcedureId* _internal_mutable_pid();
+  public:
+  void unsafe_arena_set_allocated_pid(
+      ::greptime::v1::meta::ProcedureId* pid);
+  ::greptime::v1::meta::ProcedureId* unsafe_arena_release_pid();
+
+  // @@protoc_insertion_point(class_scope:greptime.v1.meta.MigrateRegionResponse)
+ private:
+  class _Internal;
+
+  template <typename T> friend class ::PROTOBUF_NAMESPACE_ID::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::greptime::v1::meta::ResponseHeader* header_;
+    ::greptime::v1::meta::ProcedureId* pid_;
+    mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_greptime_2fv1_2fmeta_2fregion_2eproto;
+};
+// ===================================================================
+
+
+// ===================================================================
+
+#ifdef __GNUC__
+  #pragma GCC diagnostic push
+  #pragma GCC diagnostic ignored "-Wstrict-aliasing"
+#endif  // __GNUC__
+// MigrateRegionRequest
+
+// .greptime.v1.meta.RequestHeader header = 1;
+inline bool MigrateRegionRequest::_internal_has_header() const {
+  return this != internal_default_instance() && _impl_.header_ != nullptr;
+}
+inline bool MigrateRegionRequest::has_header() const {
+  return _internal_has_header();
+}
+inline const ::greptime::v1::meta::RequestHeader& MigrateRegionRequest::_internal_header() const {
+  const ::greptime::v1::meta::RequestHeader* p = _impl_.header_;
+  return p != nullptr ? *p : reinterpret_cast<const ::greptime::v1::meta::RequestHeader&>(
+      ::greptime::v1::meta::_RequestHeader_default_instance_);
+}
+inline const ::greptime::v1::meta::RequestHeader& MigrateRegionRequest::header() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.meta.MigrateRegionRequest.header)
+  return _internal_header();
+}
+inline void MigrateRegionRequest::unsafe_arena_set_allocated_header(
+    ::greptime::v1::meta::RequestHeader* header) {
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.header_);
+  }
+  _impl_.header_ = header;
+  if (header) {
+    
+  } else {
+    
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.meta.MigrateRegionRequest.header)
+}
+inline ::greptime::v1::meta::RequestHeader* MigrateRegionRequest::release_header() {
+  
+  ::greptime::v1::meta::RequestHeader* temp = _impl_.header_;
+  _impl_.header_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old =  reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(temp);
+  temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
+  if (GetArenaForAllocation() == nullptr) { delete old; }
+#else  // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return temp;
+}
+inline ::greptime::v1::meta::RequestHeader* MigrateRegionRequest::unsafe_arena_release_header() {
+  // @@protoc_insertion_point(field_release:greptime.v1.meta.MigrateRegionRequest.header)
+  
+  ::greptime::v1::meta::RequestHeader* temp = _impl_.header_;
+  _impl_.header_ = nullptr;
+  return temp;
+}
+inline ::greptime::v1::meta::RequestHeader* MigrateRegionRequest::_internal_mutable_header() {
+  
+  if (_impl_.header_ == nullptr) {
+    auto* p = CreateMaybeMessage<::greptime::v1::meta::RequestHeader>(GetArenaForAllocation());
+    _impl_.header_ = p;
+  }
+  return _impl_.header_;
+}
+inline ::greptime::v1::meta::RequestHeader* MigrateRegionRequest::mutable_header() {
+  ::greptime::v1::meta::RequestHeader* _msg = _internal_mutable_header();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.meta.MigrateRegionRequest.header)
+  return _msg;
+}
+inline void MigrateRegionRequest::set_allocated_header(::greptime::v1::meta::RequestHeader* header) {
+  ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
+  if (message_arena == nullptr) {
+    delete reinterpret_cast< ::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.header_);
+  }
+  if (header) {
+    ::PROTOBUF_NAMESPACE_ID::Arena* submessage_arena =
+        ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(
+                reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(header));
+    if (message_arena != submessage_arena) {
+      header = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
+          message_arena, header, submessage_arena);
+    }
+    
+  } else {
+    
+  }
+  _impl_.header_ = header;
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.MigrateRegionRequest.header)
+}
+
+// uint64 region_id = 3;
+inline void MigrateRegionRequest::clear_region_id() {
+  _impl_.region_id_ = uint64_t{0u};
+}
+inline uint64_t MigrateRegionRequest::_internal_region_id() const {
+  return _impl_.region_id_;
+}
+inline uint64_t MigrateRegionRequest::region_id() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.meta.MigrateRegionRequest.region_id)
+  return _internal_region_id();
+}
+inline void MigrateRegionRequest::_internal_set_region_id(uint64_t value) {
+  
+  _impl_.region_id_ = value;
+}
+inline void MigrateRegionRequest::set_region_id(uint64_t value) {
+  _internal_set_region_id(value);
+  // @@protoc_insertion_point(field_set:greptime.v1.meta.MigrateRegionRequest.region_id)
+}
+
+// uint64 from_peer = 4;
+inline void MigrateRegionRequest::clear_from_peer() {
+  _impl_.from_peer_ = uint64_t{0u};
+}
+inline uint64_t MigrateRegionRequest::_internal_from_peer() const {
+  return _impl_.from_peer_;
+}
+inline uint64_t MigrateRegionRequest::from_peer() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.meta.MigrateRegionRequest.from_peer)
+  return _internal_from_peer();
+}
+inline void MigrateRegionRequest::_internal_set_from_peer(uint64_t value) {
+  
+  _impl_.from_peer_ = value;
+}
+inline void MigrateRegionRequest::set_from_peer(uint64_t value) {
+  _internal_set_from_peer(value);
+  // @@protoc_insertion_point(field_set:greptime.v1.meta.MigrateRegionRequest.from_peer)
+}
+
+// uint64 to_peer = 5;
+inline void MigrateRegionRequest::clear_to_peer() {
+  _impl_.to_peer_ = uint64_t{0u};
+}
+inline uint64_t MigrateRegionRequest::_internal_to_peer() const {
+  return _impl_.to_peer_;
+}
+inline uint64_t MigrateRegionRequest::to_peer() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.meta.MigrateRegionRequest.to_peer)
+  return _internal_to_peer();
+}
+inline void MigrateRegionRequest::_internal_set_to_peer(uint64_t value) {
+  
+  _impl_.to_peer_ = value;
+}
+inline void MigrateRegionRequest::set_to_peer(uint64_t value) {
+  _internal_set_to_peer(value);
+  // @@protoc_insertion_point(field_set:greptime.v1.meta.MigrateRegionRequest.to_peer)
+}
+
+// uint32 replay_timeout_secs = 6;
+inline void MigrateRegionRequest::clear_replay_timeout_secs() {
+  _impl_.replay_timeout_secs_ = 0u;
+}
+inline uint32_t MigrateRegionRequest::_internal_replay_timeout_secs() const {
+  return _impl_.replay_timeout_secs_;
+}
+inline uint32_t MigrateRegionRequest::replay_timeout_secs() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.meta.MigrateRegionRequest.replay_timeout_secs)
+  return _internal_replay_timeout_secs();
+}
+inline void MigrateRegionRequest::_internal_set_replay_timeout_secs(uint32_t value) {
+  
+  _impl_.replay_timeout_secs_ = value;
+}
+inline void MigrateRegionRequest::set_replay_timeout_secs(uint32_t value) {
+  _internal_set_replay_timeout_secs(value);
+  // @@protoc_insertion_point(field_set:greptime.v1.meta.MigrateRegionRequest.replay_timeout_secs)
+}
+
+// -------------------------------------------------------------------
+
+// MigrateRegionResponse
+
+// .greptime.v1.meta.ResponseHeader header = 1;
+inline bool MigrateRegionResponse::_internal_has_header() const {
+  return this != internal_default_instance() && _impl_.header_ != nullptr;
+}
+inline bool MigrateRegionResponse::has_header() const {
+  return _internal_has_header();
+}
+inline const ::greptime::v1::meta::ResponseHeader& MigrateRegionResponse::_internal_header() const {
+  const ::greptime::v1::meta::ResponseHeader* p = _impl_.header_;
+  return p != nullptr ? *p : reinterpret_cast<const ::greptime::v1::meta::ResponseHeader&>(
+      ::greptime::v1::meta::_ResponseHeader_default_instance_);
+}
+inline const ::greptime::v1::meta::ResponseHeader& MigrateRegionResponse::header() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.meta.MigrateRegionResponse.header)
+  return _internal_header();
+}
+inline void MigrateRegionResponse::unsafe_arena_set_allocated_header(
+    ::greptime::v1::meta::ResponseHeader* header) {
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.header_);
+  }
+  _impl_.header_ = header;
+  if (header) {
+    
+  } else {
+    
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.meta.MigrateRegionResponse.header)
+}
+inline ::greptime::v1::meta::ResponseHeader* MigrateRegionResponse::release_header() {
+  
+  ::greptime::v1::meta::ResponseHeader* temp = _impl_.header_;
+  _impl_.header_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old =  reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(temp);
+  temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
+  if (GetArenaForAllocation() == nullptr) { delete old; }
+#else  // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return temp;
+}
+inline ::greptime::v1::meta::ResponseHeader* MigrateRegionResponse::unsafe_arena_release_header() {
+  // @@protoc_insertion_point(field_release:greptime.v1.meta.MigrateRegionResponse.header)
+  
+  ::greptime::v1::meta::ResponseHeader* temp = _impl_.header_;
+  _impl_.header_ = nullptr;
+  return temp;
+}
+inline ::greptime::v1::meta::ResponseHeader* MigrateRegionResponse::_internal_mutable_header() {
+  
+  if (_impl_.header_ == nullptr) {
+    auto* p = CreateMaybeMessage<::greptime::v1::meta::ResponseHeader>(GetArenaForAllocation());
+    _impl_.header_ = p;
+  }
+  return _impl_.header_;
+}
+inline ::greptime::v1::meta::ResponseHeader* MigrateRegionResponse::mutable_header() {
+  ::greptime::v1::meta::ResponseHeader* _msg = _internal_mutable_header();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.meta.MigrateRegionResponse.header)
+  return _msg;
+}
+inline void MigrateRegionResponse::set_allocated_header(::greptime::v1::meta::ResponseHeader* header) {
+  ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
+  if (message_arena == nullptr) {
+    delete reinterpret_cast< ::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.header_);
+  }
+  if (header) {
+    ::PROTOBUF_NAMESPACE_ID::Arena* submessage_arena =
+        ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(
+                reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(header));
+    if (message_arena != submessage_arena) {
+      header = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
+          message_arena, header, submessage_arena);
+    }
+    
+  } else {
+    
+  }
+  _impl_.header_ = header;
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.MigrateRegionResponse.header)
+}
+
+// .greptime.v1.meta.ProcedureId pid = 2;
+inline bool MigrateRegionResponse::_internal_has_pid() const {
+  return this != internal_default_instance() && _impl_.pid_ != nullptr;
+}
+inline bool MigrateRegionResponse::has_pid() const {
+  return _internal_has_pid();
+}
+inline const ::greptime::v1::meta::ProcedureId& MigrateRegionResponse::_internal_pid() const {
+  const ::greptime::v1::meta::ProcedureId* p = _impl_.pid_;
+  return p != nullptr ? *p : reinterpret_cast<const ::greptime::v1::meta::ProcedureId&>(
+      ::greptime::v1::meta::_ProcedureId_default_instance_);
+}
+inline const ::greptime::v1::meta::ProcedureId& MigrateRegionResponse::pid() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.meta.MigrateRegionResponse.pid)
+  return _internal_pid();
+}
+inline void MigrateRegionResponse::unsafe_arena_set_allocated_pid(
+    ::greptime::v1::meta::ProcedureId* pid) {
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.pid_);
+  }
+  _impl_.pid_ = pid;
+  if (pid) {
+    
+  } else {
+    
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.meta.MigrateRegionResponse.pid)
+}
+inline ::greptime::v1::meta::ProcedureId* MigrateRegionResponse::release_pid() {
+  
+  ::greptime::v1::meta::ProcedureId* temp = _impl_.pid_;
+  _impl_.pid_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old =  reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(temp);
+  temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
+  if (GetArenaForAllocation() == nullptr) { delete old; }
+#else  // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return temp;
+}
+inline ::greptime::v1::meta::ProcedureId* MigrateRegionResponse::unsafe_arena_release_pid() {
+  // @@protoc_insertion_point(field_release:greptime.v1.meta.MigrateRegionResponse.pid)
+  
+  ::greptime::v1::meta::ProcedureId* temp = _impl_.pid_;
+  _impl_.pid_ = nullptr;
+  return temp;
+}
+inline ::greptime::v1::meta::ProcedureId* MigrateRegionResponse::_internal_mutable_pid() {
+  
+  if (_impl_.pid_ == nullptr) {
+    auto* p = CreateMaybeMessage<::greptime::v1::meta::ProcedureId>(GetArenaForAllocation());
+    _impl_.pid_ = p;
+  }
+  return _impl_.pid_;
+}
+inline ::greptime::v1::meta::ProcedureId* MigrateRegionResponse::mutable_pid() {
+  ::greptime::v1::meta::ProcedureId* _msg = _internal_mutable_pid();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.meta.MigrateRegionResponse.pid)
+  return _msg;
+}
+inline void MigrateRegionResponse::set_allocated_pid(::greptime::v1::meta::ProcedureId* pid) {
+  ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
+  if (message_arena == nullptr) {
+    delete reinterpret_cast< ::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.pid_);
+  }
+  if (pid) {
+    ::PROTOBUF_NAMESPACE_ID::Arena* submessage_arena =
+        ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(
+                reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(pid));
+    if (message_arena != submessage_arena) {
+      pid = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
+          message_arena, pid, submessage_arena);
+    }
+    
+  } else {
+    
+  }
+  _impl_.pid_ = pid;
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.MigrateRegionResponse.pid)
+}
+
+#ifdef __GNUC__
+  #pragma GCC diagnostic pop
+#endif  // __GNUC__
+// -------------------------------------------------------------------
+
+
+// @@protoc_insertion_point(namespace_scope)
+
+}  // namespace meta
+}  // namespace v1
+}  // namespace greptime
+
+// @@protoc_insertion_point(global_scope)
+
+#include <google/protobuf/port_undef.inc>
+#endif  // GOOGLE_PROTOBUF_INCLUDED_GOOGLE_PROTOBUF_INCLUDED_greptime_2fv1_2fmeta_2fregion_2eproto

go/greptime/v1/meta/common.pb.go

@@ -561,6 +561,54 @@ func (x *KeyValue) GetValue() []byte {
 	return nil
 }
 
+// Procedure identifer
+type ProcedureId struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Key []byte `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+}
+
+func (x *ProcedureId) Reset() {
+	*x = ProcedureId{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_greptime_v1_meta_common_proto_msgTypes[8]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ProcedureId) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ProcedureId) ProtoMessage() {}
+
+func (x *ProcedureId) ProtoReflect() protoreflect.Message {
+	mi := &file_greptime_v1_meta_common_proto_msgTypes[8]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ProcedureId.ProtoReflect.Descriptor instead.
+func (*ProcedureId) Descriptor() ([]byte, []int) {
+	return file_greptime_v1_meta_common_proto_rawDescGZIP(), []int{8}
+}
+
+func (x *ProcedureId) GetKey() []byte {
+	if x != nil {
+		return x.Key
+	}
+	return nil
+}
+
 var File_greptime_v1_meta_common_proto protoreflect.FileDescriptor
 
 var file_greptime_v1_meta_common_proto_rawDesc = []byte{
@@ -621,14 +669,16 @@ var file_greptime_v1_meta_common_proto_rawDesc = []byte{
 	0x6d, 0x70, 0x4d, 0x69, 0x6c, 0x6c, 0x69, 0x73, 0x22, 0x32, 0x0a, 0x08, 0x4b, 0x65, 0x79, 0x56,
 	0x61, 0x6c, 0x75, 0x65, 0x12, 0x10, 0x0a, 0x03, 0x6b, 0x65, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28,
 	0x0c, 0x52, 0x03, 0x6b, 0x65, 0x79, 0x12, 0x14, 0x0a, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x18,
-	0x02, 0x20, 0x01, 0x28, 0x0c, 0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x2a, 0x22, 0x0a, 0x04,
+	0x02, 0x20, 0x01, 0x28, 0x0c, 0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x22, 0x1f, 0x0a, 0x0b,
-	0x52, 0x6f, 0x6c, 0x65, 0x12, 0x0c, 0x0a, 0x08, 0x44, 0x41, 0x54, 0x41, 0x4e, 0x4f, 0x44, 0x45,
+	0x50, 0x72, 0x6f, 0x63, 0x65, 0x64, 0x75, 0x72, 0x65, 0x49, 0x64, 0x12, 0x10, 0x0a, 0x03, 0x6b,
-	0x10, 0x00, 0x12, 0x0c, 0x0a, 0x08, 0x46, 0x52, 0x4f, 0x4e, 0x54, 0x45, 0x4e, 0x44, 0x10, 0x01,
+	0x65, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0c, 0x52, 0x03, 0x6b, 0x65, 0x79, 0x2a, 0x22, 0x0a,
-	0x42, 0x3c, 0x5a, 0x3a, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x47,
+	0x04, 0x52, 0x6f, 0x6c, 0x65, 0x12, 0x0c, 0x0a, 0x08, 0x44, 0x41, 0x54, 0x41, 0x4e, 0x4f, 0x44,
-	0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x54, 0x65, 0x61, 0x6d, 0x2f, 0x67, 0x72, 0x65, 0x70,
+	0x45, 0x10, 0x00, 0x12, 0x0c, 0x0a, 0x08, 0x46, 0x52, 0x4f, 0x4e, 0x54, 0x45, 0x4e, 0x44, 0x10,
-	0x74, 0x69, 0x6d, 0x65, 0x2d, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x67, 0x6f, 0x2f, 0x67, 0x72,
+	0x01, 0x42, 0x3c, 0x5a, 0x3a, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f,
-	0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2f, 0x76, 0x31, 0x2f, 0x6d, 0x65, 0x74, 0x61, 0x62, 0x06,
+	0x47, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x54, 0x65, 0x61, 0x6d, 0x2f, 0x67, 0x72, 0x65,
-	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x70, 0x74, 0x69, 0x6d, 0x65, 0x2d, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x67, 0x6f, 0x2f, 0x67,
+	0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2f, 0x76, 0x31, 0x2f, 0x6d, 0x65, 0x74, 0x61, 0x62,
+	0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -644,7 +694,7 @@ func file_greptime_v1_meta_common_proto_rawDescGZIP() []byte {
 }
 
 var file_greptime_v1_meta_common_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
-var file_greptime_v1_meta_common_proto_msgTypes = make([]protoimpl.MessageInfo, 9)
+var file_greptime_v1_meta_common_proto_msgTypes = make([]protoimpl.MessageInfo, 10)
 var file_greptime_v1_meta_common_proto_goTypes = []interface{}{
 	(Role)(0),              // 0: greptime.v1.meta.Role
 	(*RequestHeader)(nil),  // 1: greptime.v1.meta.RequestHeader
@@ -655,11 +705,12 @@ var file_greptime_v1_meta_common_proto_goTypes = []interface{}{
 	(*TableName)(nil),      // 6: greptime.v1.meta.TableName
 	(*TimeInterval)(nil),   // 7: greptime.v1.meta.TimeInterval
 	(*KeyValue)(nil),       // 8: greptime.v1.meta.KeyValue
-	nil,                    // 9: greptime.v1.meta.RequestHeader.TracingContextEntry
+	(*ProcedureId)(nil),    // 9: greptime.v1.meta.ProcedureId
+	nil,                    // 10: greptime.v1.meta.RequestHeader.TracingContextEntry
 }
 var file_greptime_v1_meta_common_proto_depIdxs = []int32{
 	0,  // 0: greptime.v1.meta.RequestHeader.role:type_name -> greptime.v1.meta.Role
-	9, // 1: greptime.v1.meta.RequestHeader.tracing_context:type_name -> greptime.v1.meta.RequestHeader.TracingContextEntry
+	10, // 1: greptime.v1.meta.RequestHeader.tracing_context:type_name -> greptime.v1.meta.RequestHeader.TracingContextEntry
 	3,  // 2: greptime.v1.meta.ResponseHeader.error:type_name -> greptime.v1.meta.Error
 	3,  // [3:3] is the sub-list for method output_type
 	3,  // [3:3] is the sub-list for method input_type
@@ -770,6 +821,18 @@ func file_greptime_v1_meta_common_proto_init() {
 				return nil
 			}
 		}
+		file_greptime_v1_meta_common_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ProcedureId); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
@@ -777,7 +840,7 @@ func file_greptime_v1_meta_common_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_greptime_v1_meta_common_proto_rawDesc,
 			NumEnums:      1,
-			NumMessages:   9,
+			NumMessages:   10,
 			NumExtensions: 0,
 			NumServices:   0,
 		},

go/greptime/v1/meta/ddl.pb.go

@@ -426,7 +426,7 @@ func (x *TruncateTableTask) GetTruncateTable() *v1.TruncateTableExpr {
 	return nil
 }
 
-type SubmitDdlTaskRequest struct {
+type DdlTaskRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
@@ -434,18 +434,18 @@ type SubmitDdlTaskRequest struct {
 	Header *RequestHeader `protobuf:"bytes,1,opt,name=header,proto3" json:"header,omitempty"`
 	// Types that are assignable to Task:
 	//
-	//	*SubmitDdlTaskRequest_CreateTableTask
+	//	*DdlTaskRequest_CreateTableTask
-	//	*SubmitDdlTaskRequest_DropTableTask
+	//	*DdlTaskRequest_DropTableTask
-	//	*SubmitDdlTaskRequest_AlterTableTask
+	//	*DdlTaskRequest_AlterTableTask
-	//	*SubmitDdlTaskRequest_TruncateTableTask
+	//	*DdlTaskRequest_TruncateTableTask
-	//	*SubmitDdlTaskRequest_CreateTableTasks
+	//	*DdlTaskRequest_CreateTableTasks
-	//	*SubmitDdlTaskRequest_DropTableTasks
+	//	*DdlTaskRequest_DropTableTasks
-	//	*SubmitDdlTaskRequest_AlterTableTasks
+	//	*DdlTaskRequest_AlterTableTasks
-	Task isSubmitDdlTaskRequest_Task `protobuf_oneof:"task"`
+	Task isDdlTaskRequest_Task `protobuf_oneof:"task"`
 }
 
-func (x *SubmitDdlTaskRequest) Reset() {
+func (x *DdlTaskRequest) Reset() {
-	*x = SubmitDdlTaskRequest{}
+	*x = DdlTaskRequest{}
 	if protoimpl.UnsafeEnabled {
 		mi := &file_greptime_v1_meta_ddl_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
@@ -453,13 +453,13 @@ func (x *SubmitDdlTaskRequest) Reset() {
 	}
 }
 
-func (x *SubmitDdlTaskRequest) String() string {
+func (x *DdlTaskRequest) String() string {
 	return protoimpl.X.MessageStringOf(x)
 }
 
-func (*SubmitDdlTaskRequest) ProtoMessage() {}
+func (*DdlTaskRequest) ProtoMessage() {}
 
-func (x *SubmitDdlTaskRequest) ProtoReflect() protoreflect.Message {
+func (x *DdlTaskRequest) ProtoReflect() protoreflect.Message {
 	mi := &file_greptime_v1_meta_ddl_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
@@ -471,128 +471,127 @@ func (x *SubmitDdlTaskRequest) ProtoReflect() protoreflect.Message {
 	return mi.MessageOf(x)
 }
 
-// Deprecated: Use SubmitDdlTaskRequest.ProtoReflect.Descriptor instead.
+// Deprecated: Use DdlTaskRequest.ProtoReflect.Descriptor instead.
-func (*SubmitDdlTaskRequest) Descriptor() ([]byte, []int) {
+func (*DdlTaskRequest) Descriptor() ([]byte, []int) {
 	return file_greptime_v1_meta_ddl_proto_rawDescGZIP(), []int{7}
 }
 
-func (x *SubmitDdlTaskRequest) GetHeader() *RequestHeader {
+func (x *DdlTaskRequest) GetHeader() *RequestHeader {
 	if x != nil {
 		return x.Header
 	}
 	return nil
 }
 
-func (m *SubmitDdlTaskRequest) GetTask() isSubmitDdlTaskRequest_Task {
+func (m *DdlTaskRequest) GetTask() isDdlTaskRequest_Task {
 	if m != nil {
 		return m.Task
 	}
 	return nil
 }
 
-func (x *SubmitDdlTaskRequest) GetCreateTableTask() *CreateTableTask {
+func (x *DdlTaskRequest) GetCreateTableTask() *CreateTableTask {
-	if x, ok := x.GetTask().(*SubmitDdlTaskRequest_CreateTableTask); ok {
+	if x, ok := x.GetTask().(*DdlTaskRequest_CreateTableTask); ok {
 		return x.CreateTableTask
 	}
 	return nil
 }
 
-func (x *SubmitDdlTaskRequest) GetDropTableTask() *DropTableTask {
+func (x *DdlTaskRequest) GetDropTableTask() *DropTableTask {
-	if x, ok := x.GetTask().(*SubmitDdlTaskRequest_DropTableTask); ok {
+	if x, ok := x.GetTask().(*DdlTaskRequest_DropTableTask); ok {
 		return x.DropTableTask
 	}
 	return nil
 }
 
-func (x *SubmitDdlTaskRequest) GetAlterTableTask() *AlterTableTask {
+func (x *DdlTaskRequest) GetAlterTableTask() *AlterTableTask {
-	if x, ok := x.GetTask().(*SubmitDdlTaskRequest_AlterTableTask); ok {
+	if x, ok := x.GetTask().(*DdlTaskRequest_AlterTableTask); ok {
 		return x.AlterTableTask
 	}
 	return nil
 }
 
-func (x *SubmitDdlTaskRequest) GetTruncateTableTask() *TruncateTableTask {
+func (x *DdlTaskRequest) GetTruncateTableTask() *TruncateTableTask {
-	if x, ok := x.GetTask().(*SubmitDdlTaskRequest_TruncateTableTask); ok {
+	if x, ok := x.GetTask().(*DdlTaskRequest_TruncateTableTask); ok {
 		return x.TruncateTableTask
 	}
 	return nil
 }
 
-func (x *SubmitDdlTaskRequest) GetCreateTableTasks() *CreateTableTasks {
+func (x *DdlTaskRequest) GetCreateTableTasks() *CreateTableTasks {
-	if x, ok := x.GetTask().(*SubmitDdlTaskRequest_CreateTableTasks); ok {
+	if x, ok := x.GetTask().(*DdlTaskRequest_CreateTableTasks); ok {
 		return x.CreateTableTasks
 	}
 	return nil
 }
 
-func (x *SubmitDdlTaskRequest) GetDropTableTasks() *DropTableTasks {
+func (x *DdlTaskRequest) GetDropTableTasks() *DropTableTasks {
-	if x, ok := x.GetTask().(*SubmitDdlTaskRequest_DropTableTasks); ok {
+	if x, ok := x.GetTask().(*DdlTaskRequest_DropTableTasks); ok {
 		return x.DropTableTasks
 	}
 	return nil
 }
 
-func (x *SubmitDdlTaskRequest) GetAlterTableTasks() *AlterTableTasks {
+func (x *DdlTaskRequest) GetAlterTableTasks() *AlterTableTasks {
-	if x, ok := x.GetTask().(*SubmitDdlTaskRequest_AlterTableTasks); ok {
+	if x, ok := x.GetTask().(*DdlTaskRequest_AlterTableTasks); ok {
 		return x.AlterTableTasks
 	}
 	return nil
 }
 
-type isSubmitDdlTaskRequest_Task interface {
+type isDdlTaskRequest_Task interface {
-	isSubmitDdlTaskRequest_Task()
+	isDdlTaskRequest_Task()
 }
 
-type SubmitDdlTaskRequest_CreateTableTask struct {
+type DdlTaskRequest_CreateTableTask struct {
 	CreateTableTask *CreateTableTask `protobuf:"bytes,2,opt,name=create_table_task,json=createTableTask,proto3,oneof"`
 }
 
-type SubmitDdlTaskRequest_DropTableTask struct {
+type DdlTaskRequest_DropTableTask struct {
 	DropTableTask *DropTableTask `protobuf:"bytes,3,opt,name=drop_table_task,json=dropTableTask,proto3,oneof"`
 }
 
-type SubmitDdlTaskRequest_AlterTableTask struct {
+type DdlTaskRequest_AlterTableTask struct {
 	AlterTableTask *AlterTableTask `protobuf:"bytes,4,opt,name=alter_table_task,json=alterTableTask,proto3,oneof"`
 }
 
-type SubmitDdlTaskRequest_TruncateTableTask struct {
+type DdlTaskRequest_TruncateTableTask struct {
 	TruncateTableTask *TruncateTableTask `protobuf:"bytes,5,opt,name=truncate_table_task,json=truncateTableTask,proto3,oneof"`
 }
 
-type SubmitDdlTaskRequest_CreateTableTasks struct {
+type DdlTaskRequest_CreateTableTasks struct {
 	CreateTableTasks *CreateTableTasks `protobuf:"bytes,6,opt,name=create_table_tasks,json=createTableTasks,proto3,oneof"`
 }
 
-type SubmitDdlTaskRequest_DropTableTasks struct {
+type DdlTaskRequest_DropTableTasks struct {
 	DropTableTasks *DropTableTasks `protobuf:"bytes,7,opt,name=drop_table_tasks,json=dropTableTasks,proto3,oneof"`
 }
 
-type SubmitDdlTaskRequest_AlterTableTasks struct {
+type DdlTaskRequest_AlterTableTasks struct {
 	AlterTableTasks *AlterTableTasks `protobuf:"bytes,8,opt,name=alter_table_tasks,json=alterTableTasks,proto3,oneof"`
 }
 
-func (*SubmitDdlTaskRequest_CreateTableTask) isSubmitDdlTaskRequest_Task() {}
+func (*DdlTaskRequest_CreateTableTask) isDdlTaskRequest_Task() {}
 
-func (*SubmitDdlTaskRequest_DropTableTask) isSubmitDdlTaskRequest_Task() {}
+func (*DdlTaskRequest_DropTableTask) isDdlTaskRequest_Task() {}
 
-func (*SubmitDdlTaskRequest_AlterTableTask) isSubmitDdlTaskRequest_Task() {}
+func (*DdlTaskRequest_AlterTableTask) isDdlTaskRequest_Task() {}
 
-func (*SubmitDdlTaskRequest_TruncateTableTask) isSubmitDdlTaskRequest_Task() {}
+func (*DdlTaskRequest_TruncateTableTask) isDdlTaskRequest_Task() {}
 
-func (*SubmitDdlTaskRequest_CreateTableTasks) isSubmitDdlTaskRequest_Task() {}
+func (*DdlTaskRequest_CreateTableTasks) isDdlTaskRequest_Task() {}
 
-func (*SubmitDdlTaskRequest_DropTableTasks) isSubmitDdlTaskRequest_Task() {}
+func (*DdlTaskRequest_DropTableTasks) isDdlTaskRequest_Task() {}
 
-func (*SubmitDdlTaskRequest_AlterTableTasks) isSubmitDdlTaskRequest_Task() {}
+func (*DdlTaskRequest_AlterTableTasks) isDdlTaskRequest_Task() {}
 
-type SubmitDdlTaskResponse struct {
+type DdlTaskResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
 	Header *ResponseHeader `protobuf:"bytes,1,opt,name=header,proto3" json:"header,omitempty"`
-	// Key is the identifier for the ddl task.
+	Pid    *ProcedureId    `protobuf:"bytes,2,opt,name=pid,proto3" json:"pid,omitempty"`
-	Key []byte `protobuf:"bytes,2,opt,name=key,proto3" json:"key,omitempty"`
 	// Returns if table created.
 	// TODO(jeremy): remove it?
 	TableId *TableId `protobuf:"bytes,4,opt,name=table_id,json=tableId,proto3" json:"table_id,omitempty"`
@@ -600,8 +599,8 @@ type SubmitDdlTaskResponse struct {
 	TableIds []*TableId `protobuf:"bytes,5,rep,name=table_ids,json=tableIds,proto3" json:"table_ids,omitempty"`
 }
 
-func (x *SubmitDdlTaskResponse) Reset() {
+func (x *DdlTaskResponse) Reset() {
-	*x = SubmitDdlTaskResponse{}
+	*x = DdlTaskResponse{}
 	if protoimpl.UnsafeEnabled {
 		mi := &file_greptime_v1_meta_ddl_proto_msgTypes[8]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
@@ -609,13 +608,13 @@ func (x *SubmitDdlTaskResponse) Reset() {
 	}
 }
 
-func (x *SubmitDdlTaskResponse) String() string {
+func (x *DdlTaskResponse) String() string {
 	return protoimpl.X.MessageStringOf(x)
 }
 
-func (*SubmitDdlTaskResponse) ProtoMessage() {}
+func (*DdlTaskResponse) ProtoMessage() {}
 
-func (x *SubmitDdlTaskResponse) ProtoReflect() protoreflect.Message {
+func (x *DdlTaskResponse) ProtoReflect() protoreflect.Message {
 	mi := &file_greptime_v1_meta_ddl_proto_msgTypes[8]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
@@ -627,33 +626,33 @@ func (x *SubmitDdlTaskResponse) ProtoReflect() protoreflect.Message {
 	return mi.MessageOf(x)
 }
 
-// Deprecated: Use SubmitDdlTaskResponse.ProtoReflect.Descriptor instead.
+// Deprecated: Use DdlTaskResponse.ProtoReflect.Descriptor instead.
-func (*SubmitDdlTaskResponse) Descriptor() ([]byte, []int) {
+func (*DdlTaskResponse) Descriptor() ([]byte, []int) {
 	return file_greptime_v1_meta_ddl_proto_rawDescGZIP(), []int{8}
 }
 
-func (x *SubmitDdlTaskResponse) GetHeader() *ResponseHeader {
+func (x *DdlTaskResponse) GetHeader() *ResponseHeader {
 	if x != nil {
 		return x.Header
 	}
 	return nil
 }
 
-func (x *SubmitDdlTaskResponse) GetKey() []byte {
+func (x *DdlTaskResponse) GetPid() *ProcedureId {
 	if x != nil {
-		return x.Key
+		return x.Pid
 	}
 	return nil
 }
 
-func (x *SubmitDdlTaskResponse) GetTableId() *TableId {
+func (x *DdlTaskResponse) GetTableId() *TableId {
 	if x != nil {
 		return x.TableId
 	}
 	return nil
 }
 
-func (x *SubmitDdlTaskResponse) GetTableIds() []*TableId {
+func (x *DdlTaskResponse) GetTableIds() []*TableId {
 	if x != nil {
 		return x.TableIds
 	}
@@ -711,75 +710,69 @@ var file_greptime_v1_meta_ddl_proto_rawDesc = []byte{
 	0x6c, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x1e, 0x2e, 0x67, 0x72, 0x65, 0x70, 0x74,
 	0x69, 0x6d, 0x65, 0x2e, 0x76, 0x31, 0x2e, 0x54, 0x72, 0x75, 0x6e, 0x63, 0x61, 0x74, 0x65, 0x54,
 	0x61, 0x62, 0x6c, 0x65, 0x45, 0x78, 0x70, 0x72, 0x52, 0x0d, 0x74, 0x72, 0x75, 0x6e, 0x63, 0x61,
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+	0x74, 0x65, 0x54, 0x61, 0x62, 0x6c, 0x65, 0x22, 0x85, 0x05, 0x0a, 0x0e, 0x44, 0x64, 0x6c, 0x54,
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 var (
@@ -805,8 +798,8 @@ var file_greptime_v1_meta_ddl_proto_goTypes = []interface{}{
 	(*AlterTableTask)(nil),       // 5: greptime.v1.meta.AlterTableTask
 	(*AlterTableTasks)(nil),      // 6: greptime.v1.meta.AlterTableTasks
 	(*TruncateTableTask)(nil),    // 7: greptime.v1.meta.TruncateTableTask
-	(*SubmitDdlTaskRequest)(nil),  // 8: greptime.v1.meta.SubmitDdlTaskRequest
+	(*DdlTaskRequest)(nil),       // 8: greptime.v1.meta.DdlTaskRequest
-	(*SubmitDdlTaskResponse)(nil), // 9: greptime.v1.meta.SubmitDdlTaskResponse
+	(*DdlTaskResponse)(nil),      // 9: greptime.v1.meta.DdlTaskResponse
 	(*v1.CreateTableExpr)(nil),   // 10: greptime.v1.CreateTableExpr
 	(*Partition)(nil),            // 11: greptime.v1.meta.Partition
 	(*v1.DropTableExpr)(nil),     // 12: greptime.v1.DropTableExpr
@@ -814,7 +807,8 @@ var file_greptime_v1_meta_ddl_proto_goTypes = []interface{}{
 	(*v1.TruncateTableExpr)(nil), // 14: greptime.v1.TruncateTableExpr
 	(*RequestHeader)(nil),        // 15: greptime.v1.meta.RequestHeader
 	(*ResponseHeader)(nil),       // 16: greptime.v1.meta.ResponseHeader
-	(*TableId)(nil),               // 17: greptime.v1.meta.TableId
+	(*ProcedureId)(nil),          // 17: greptime.v1.meta.ProcedureId
+	(*TableId)(nil),              // 18: greptime.v1.meta.TableId
 }
 var file_greptime_v1_meta_ddl_proto_depIdxs = []int32{
 	10, // 0: greptime.v1.meta.CreateTableTask.create_table:type_name -> greptime.v1.CreateTableExpr
@@ -825,24 +819,23 @@ var file_greptime_v1_meta_ddl_proto_depIdxs = []int32{
 	13, // 5: greptime.v1.meta.AlterTableTask.alter_table:type_name -> greptime.v1.AlterExpr
 	5,  // 6: greptime.v1.meta.AlterTableTasks.tasks:type_name -> greptime.v1.meta.AlterTableTask
 	14, // 7: greptime.v1.meta.TruncateTableTask.truncate_table:type_name -> greptime.v1.TruncateTableExpr
-	15, // 8: greptime.v1.meta.SubmitDdlTaskRequest.header:type_name -> greptime.v1.meta.RequestHeader
+	15, // 8: greptime.v1.meta.DdlTaskRequest.header:type_name -> greptime.v1.meta.RequestHeader
-	1,  // 9: greptime.v1.meta.SubmitDdlTaskRequest.create_table_task:type_name -> greptime.v1.meta.CreateTableTask
+	1,  // 9: greptime.v1.meta.DdlTaskRequest.create_table_task:type_name -> greptime.v1.meta.CreateTableTask
-	3,  // 10: greptime.v1.meta.SubmitDdlTaskRequest.drop_table_task:type_name -> greptime.v1.meta.DropTableTask
+	3,  // 10: greptime.v1.meta.DdlTaskRequest.drop_table_task:type_name -> greptime.v1.meta.DropTableTask
-	5,  // 11: greptime.v1.meta.SubmitDdlTaskRequest.alter_table_task:type_name -> greptime.v1.meta.AlterTableTask
+	5,  // 11: greptime.v1.meta.DdlTaskRequest.alter_table_task:type_name -> greptime.v1.meta.AlterTableTask
-	7,  // 12: greptime.v1.meta.SubmitDdlTaskRequest.truncate_table_task:type_name -> greptime.v1.meta.TruncateTableTask
+	7,  // 12: greptime.v1.meta.DdlTaskRequest.truncate_table_task:type_name -> greptime.v1.meta.TruncateTableTask
-	2,  // 13: greptime.v1.meta.SubmitDdlTaskRequest.create_table_tasks:type_name -> greptime.v1.meta.CreateTableTasks
+	2,  // 13: greptime.v1.meta.DdlTaskRequest.create_table_tasks:type_name -> greptime.v1.meta.CreateTableTasks
-	4,  // 14: greptime.v1.meta.SubmitDdlTaskRequest.drop_table_tasks:type_name -> greptime.v1.meta.DropTableTasks
+	4,  // 14: greptime.v1.meta.DdlTaskRequest.drop_table_tasks:type_name -> greptime.v1.meta.DropTableTasks
-	6,  // 15: greptime.v1.meta.SubmitDdlTaskRequest.alter_table_tasks:type_name -> greptime.v1.meta.AlterTableTasks
+	6,  // 15: greptime.v1.meta.DdlTaskRequest.alter_table_tasks:type_name -> greptime.v1.meta.AlterTableTasks
-	16, // 16: greptime.v1.meta.SubmitDdlTaskResponse.header:type_name -> greptime.v1.meta.ResponseHeader
+	16, // 16: greptime.v1.meta.DdlTaskResponse.header:type_name -> greptime.v1.meta.ResponseHeader
-	17, // 17: greptime.v1.meta.SubmitDdlTaskResponse.table_id:type_name -> greptime.v1.meta.TableId
+	17, // 17: greptime.v1.meta.DdlTaskResponse.pid:type_name -> greptime.v1.meta.ProcedureId
-	17, // 18: greptime.v1.meta.SubmitDdlTaskResponse.table_ids:type_name -> greptime.v1.meta.TableId
+	18, // 18: greptime.v1.meta.DdlTaskResponse.table_id:type_name -> greptime.v1.meta.TableId
-	8,  // 19: greptime.v1.meta.DdlTask.SubmitDdlTask:input_type -> greptime.v1.meta.SubmitDdlTaskRequest
+	18, // 19: greptime.v1.meta.DdlTaskResponse.table_ids:type_name -> greptime.v1.meta.TableId
-	9,  // 20: greptime.v1.meta.DdlTask.SubmitDdlTask:output_type -> greptime.v1.meta.SubmitDdlTaskResponse
+	20, // [20:20] is the sub-list for method output_type
-	20, // [20:21] is the sub-list for method output_type
+	20, // [20:20] is the sub-list for method input_type
-	19, // [19:20] is the sub-list for method input_type
+	20, // [20:20] is the sub-list for extension type_name
-	19, // [19:19] is the sub-list for extension type_name
+	20, // [20:20] is the sub-list for extension extendee
-	19, // [19:19] is the sub-list for extension extendee
+	0,  // [0:20] is the sub-list for field type_name
-	0,  // [0:19] is the sub-list for field type_name
 }
 
 func init() { file_greptime_v1_meta_ddl_proto_init() }
@@ -938,7 +931,7 @@ func file_greptime_v1_meta_ddl_proto_init() {
 			}
 		}
 		file_greptime_v1_meta_ddl_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SubmitDdlTaskRequest); i {
+			switch v := v.(*DdlTaskRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -950,7 +943,7 @@ func file_greptime_v1_meta_ddl_proto_init() {
 			}
 		}
 		file_greptime_v1_meta_ddl_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SubmitDdlTaskResponse); i {
+			switch v := v.(*DdlTaskResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -963,13 +956,13 @@ func file_greptime_v1_meta_ddl_proto_init() {
 		}
 	}
 	file_greptime_v1_meta_ddl_proto_msgTypes[7].OneofWrappers = []interface{}{
-		(*SubmitDdlTaskRequest_CreateTableTask)(nil),
+		(*DdlTaskRequest_CreateTableTask)(nil),
-		(*SubmitDdlTaskRequest_DropTableTask)(nil),
+		(*DdlTaskRequest_DropTableTask)(nil),
-		(*SubmitDdlTaskRequest_AlterTableTask)(nil),
+		(*DdlTaskRequest_AlterTableTask)(nil),
-		(*SubmitDdlTaskRequest_TruncateTableTask)(nil),
+		(*DdlTaskRequest_TruncateTableTask)(nil),
-		(*SubmitDdlTaskRequest_CreateTableTasks)(nil),
+		(*DdlTaskRequest_CreateTableTasks)(nil),
-		(*SubmitDdlTaskRequest_DropTableTasks)(nil),
+		(*DdlTaskRequest_DropTableTasks)(nil),
-		(*SubmitDdlTaskRequest_AlterTableTasks)(nil),
+		(*DdlTaskRequest_AlterTableTasks)(nil),
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
@@ -979,7 +972,7 @@ func file_greptime_v1_meta_ddl_proto_init() {
 			NumEnums:      1,
 			NumMessages:   9,
 			NumExtensions: 0,
-			NumServices:   1,
+			NumServices:   0,
 		},
 		GoTypes:           file_greptime_v1_meta_ddl_proto_goTypes,
 		DependencyIndexes: file_greptime_v1_meta_ddl_proto_depIdxs,

go/greptime/v1/meta/procedure.pb.go

@@ -0,0 +1,353 @@
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.28.1
+// 	protoc        v3.21.6
+// source: greptime/v1/meta/procedure.proto
+
+package meta
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type ProcedureStatus int32
+
+const (
+	ProcedureStatus_Running  ProcedureStatus = 0
+	ProcedureStatus_Done     ProcedureStatus = 1
+	ProcedureStatus_Retrying ProcedureStatus = 2
+	ProcedureStatus_Failed   ProcedureStatus = 3
+)
+
+// Enum value maps for ProcedureStatus.
+var (
+	ProcedureStatus_name = map[int32]string{
+		0: "Running",
+		1: "Done",
+		2: "Retrying",
+		3: "Failed",
+	}
+	ProcedureStatus_value = map[string]int32{
+		"Running":  0,
+		"Done":     1,
+		"Retrying": 2,
+		"Failed":   3,
+	}
+)
+
+func (x ProcedureStatus) Enum() *ProcedureStatus {
+	p := new(ProcedureStatus)
+	*p = x
+	return p
+}
+
+func (x ProcedureStatus) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (ProcedureStatus) Descriptor() protoreflect.EnumDescriptor {
+	return file_greptime_v1_meta_procedure_proto_enumTypes[0].Descriptor()
+}
+
+func (ProcedureStatus) Type() protoreflect.EnumType {
+	return &file_greptime_v1_meta_procedure_proto_enumTypes[0]
+}
+
+func (x ProcedureStatus) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use ProcedureStatus.Descriptor instead.
+func (ProcedureStatus) EnumDescriptor() ([]byte, []int) {
+	return file_greptime_v1_meta_procedure_proto_rawDescGZIP(), []int{0}
+}
+
+type QueryProcedureRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Header *RequestHeader `protobuf:"bytes,1,opt,name=header,proto3" json:"header,omitempty"`
+	Pid    *ProcedureId   `protobuf:"bytes,2,opt,name=pid,proto3" json:"pid,omitempty"`
+}
+
+func (x *QueryProcedureRequest) Reset() {
+	*x = QueryProcedureRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_greptime_v1_meta_procedure_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *QueryProcedureRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*QueryProcedureRequest) ProtoMessage() {}
+
+func (x *QueryProcedureRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_greptime_v1_meta_procedure_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use QueryProcedureRequest.ProtoReflect.Descriptor instead.
+func (*QueryProcedureRequest) Descriptor() ([]byte, []int) {
+	return file_greptime_v1_meta_procedure_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *QueryProcedureRequest) GetHeader() *RequestHeader {
+	if x != nil {
+		return x.Header
+	}
+	return nil
+}
+
+func (x *QueryProcedureRequest) GetPid() *ProcedureId {
+	if x != nil {
+		return x.Pid
+	}
+	return nil
+}
+
+type ProcedureStateResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Header *ResponseHeader `protobuf:"bytes,1,opt,name=header,proto3" json:"header,omitempty"`
+	Status ProcedureStatus `protobuf:"varint,2,opt,name=status,proto3,enum=greptime.v1.meta.ProcedureStatus" json:"status,omitempty"`
+	Error  string          `protobuf:"bytes,3,opt,name=error,proto3" json:"error,omitempty"`
+}
+
+func (x *ProcedureStateResponse) Reset() {
+	*x = ProcedureStateResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_greptime_v1_meta_procedure_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ProcedureStateResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ProcedureStateResponse) ProtoMessage() {}
+
+func (x *ProcedureStateResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_greptime_v1_meta_procedure_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ProcedureStateResponse.ProtoReflect.Descriptor instead.
+func (*ProcedureStateResponse) Descriptor() ([]byte, []int) {
+	return file_greptime_v1_meta_procedure_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *ProcedureStateResponse) GetHeader() *ResponseHeader {
+	if x != nil {
+		return x.Header
+	}
+	return nil
+}
+
+func (x *ProcedureStateResponse) GetStatus() ProcedureStatus {
+	if x != nil {
+		return x.Status
+	}
+	return ProcedureStatus_Running
+}
+
+func (x *ProcedureStateResponse) GetError() string {
+	if x != nil {
+		return x.Error
+	}
+	return ""
+}
+
+var File_greptime_v1_meta_procedure_proto protoreflect.FileDescriptor
+
+var file_greptime_v1_meta_procedure_proto_rawDesc = []byte{
+	0x0a, 0x20, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2f, 0x76, 0x31, 0x2f, 0x6d, 0x65,
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+	0x4d, 0x69, 0x67, 0x72, 0x61, 0x74, 0x65, 0x52, 0x65, 0x67, 0x69, 0x6f, 0x6e, 0x52, 0x65, 0x73,
+	0x70, 0x6f, 0x6e, 0x73, 0x65, 0x42, 0x3c, 0x5a, 0x3a, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e,
+	0x63, 0x6f, 0x6d, 0x2f, 0x47, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x54, 0x65, 0x61, 0x6d,
+	0x2f, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2d, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f,
+	0x67, 0x6f, 0x2f, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2f, 0x76, 0x31, 0x2f, 0x6d,
+	0x65, 0x74, 0x61, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_greptime_v1_meta_procedure_proto_rawDescOnce sync.Once
+	file_greptime_v1_meta_procedure_proto_rawDescData = file_greptime_v1_meta_procedure_proto_rawDesc
+)
+
+func file_greptime_v1_meta_procedure_proto_rawDescGZIP() []byte {
+	file_greptime_v1_meta_procedure_proto_rawDescOnce.Do(func() {
+		file_greptime_v1_meta_procedure_proto_rawDescData = protoimpl.X.CompressGZIP(file_greptime_v1_meta_procedure_proto_rawDescData)
+	})
+	return file_greptime_v1_meta_procedure_proto_rawDescData
+}
+
+var file_greptime_v1_meta_procedure_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
+var file_greptime_v1_meta_procedure_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
+var file_greptime_v1_meta_procedure_proto_goTypes = []interface{}{
+	(ProcedureStatus)(0),           // 0: greptime.v1.meta.ProcedureStatus
+	(*QueryProcedureRequest)(nil),  // 1: greptime.v1.meta.QueryProcedureRequest
+	(*ProcedureStateResponse)(nil), // 2: greptime.v1.meta.ProcedureStateResponse
+	(*RequestHeader)(nil),          // 3: greptime.v1.meta.RequestHeader
+	(*ProcedureId)(nil),            // 4: greptime.v1.meta.ProcedureId
+	(*ResponseHeader)(nil),         // 5: greptime.v1.meta.ResponseHeader
+	(*DdlTaskRequest)(nil),         // 6: greptime.v1.meta.DdlTaskRequest
+	(*MigrateRegionRequest)(nil),   // 7: greptime.v1.meta.MigrateRegionRequest
+	(*DdlTaskResponse)(nil),        // 8: greptime.v1.meta.DdlTaskResponse
+	(*MigrateRegionResponse)(nil),  // 9: greptime.v1.meta.MigrateRegionResponse
+}
+var file_greptime_v1_meta_procedure_proto_depIdxs = []int32{
+	3, // 0: greptime.v1.meta.QueryProcedureRequest.header:type_name -> greptime.v1.meta.RequestHeader
+	4, // 1: greptime.v1.meta.QueryProcedureRequest.pid:type_name -> greptime.v1.meta.ProcedureId
+	5, // 2: greptime.v1.meta.ProcedureStateResponse.header:type_name -> greptime.v1.meta.ResponseHeader
+	0, // 3: greptime.v1.meta.ProcedureStateResponse.status:type_name -> greptime.v1.meta.ProcedureStatus
+	1, // 4: greptime.v1.meta.ProcedureService.query:input_type -> greptime.v1.meta.QueryProcedureRequest
+	6, // 5: greptime.v1.meta.ProcedureService.ddl:input_type -> greptime.v1.meta.DdlTaskRequest
+	7, // 6: greptime.v1.meta.ProcedureService.migrate:input_type -> greptime.v1.meta.MigrateRegionRequest
+	2, // 7: greptime.v1.meta.ProcedureService.query:output_type -> greptime.v1.meta.ProcedureStateResponse
+	8, // 8: greptime.v1.meta.ProcedureService.ddl:output_type -> greptime.v1.meta.DdlTaskResponse
+	9, // 9: greptime.v1.meta.ProcedureService.migrate:output_type -> greptime.v1.meta.MigrateRegionResponse
+	7, // [7:10] is the sub-list for method output_type
+	4, // [4:7] is the sub-list for method input_type
+	4, // [4:4] is the sub-list for extension type_name
+	4, // [4:4] is the sub-list for extension extendee
+	0, // [0:4] is the sub-list for field type_name
+}
+
+func init() { file_greptime_v1_meta_procedure_proto_init() }
+func file_greptime_v1_meta_procedure_proto_init() {
+	if File_greptime_v1_meta_procedure_proto != nil {
+		return
+	}
+	file_greptime_v1_meta_common_proto_init()
+	file_greptime_v1_meta_ddl_proto_init()
+	file_greptime_v1_meta_region_proto_init()
+	if !protoimpl.UnsafeEnabled {
+		file_greptime_v1_meta_procedure_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*QueryProcedureRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_greptime_v1_meta_procedure_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ProcedureStateResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_greptime_v1_meta_procedure_proto_rawDesc,
+			NumEnums:      1,
+			NumMessages:   2,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_greptime_v1_meta_procedure_proto_goTypes,
+		DependencyIndexes: file_greptime_v1_meta_procedure_proto_depIdxs,
+		EnumInfos:         file_greptime_v1_meta_procedure_proto_enumTypes,
+		MessageInfos:      file_greptime_v1_meta_procedure_proto_msgTypes,
+	}.Build()
+	File_greptime_v1_meta_procedure_proto = out.File
+	file_greptime_v1_meta_procedure_proto_rawDesc = nil
+	file_greptime_v1_meta_procedure_proto_goTypes = nil
+	file_greptime_v1_meta_procedure_proto_depIdxs = nil
+}

go/greptime/v1/meta/procedure_grpc.pb.go

@@ -0,0 +1,183 @@
+// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
+// versions:
+// - protoc-gen-go-grpc v1.2.0
+// - protoc             v3.21.6
+// source: greptime/v1/meta/procedure.proto
+
+package meta
+
+import (
+	context "context"
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+)
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.32.0 or later.
+const _ = grpc.SupportPackageIsVersion7
+
+// ProcedureServiceClient is the client API for ProcedureService service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
+type ProcedureServiceClient interface {
+	// Query a submitted procedure state
+	Query(ctx context.Context, in *QueryProcedureRequest, opts ...grpc.CallOption) (*ProcedureStateResponse, error)
+	// Submits a DDL task
+	Ddl(ctx context.Context, in *DdlTaskRequest, opts ...grpc.CallOption) (*DdlTaskResponse, error)
+	// Submits a region migration task
+	Migrate(ctx context.Context, in *MigrateRegionRequest, opts ...grpc.CallOption) (*MigrateRegionResponse, error)
+}
+
+type procedureServiceClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewProcedureServiceClient(cc grpc.ClientConnInterface) ProcedureServiceClient {
+	return &procedureServiceClient{cc}
+}
+
+func (c *procedureServiceClient) Query(ctx context.Context, in *QueryProcedureRequest, opts ...grpc.CallOption) (*ProcedureStateResponse, error) {
+	out := new(ProcedureStateResponse)
+	err := c.cc.Invoke(ctx, "/greptime.v1.meta.ProcedureService/query", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *procedureServiceClient) Ddl(ctx context.Context, in *DdlTaskRequest, opts ...grpc.CallOption) (*DdlTaskResponse, error) {
+	out := new(DdlTaskResponse)
+	err := c.cc.Invoke(ctx, "/greptime.v1.meta.ProcedureService/ddl", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *procedureServiceClient) Migrate(ctx context.Context, in *MigrateRegionRequest, opts ...grpc.CallOption) (*MigrateRegionResponse, error) {
+	out := new(MigrateRegionResponse)
+	err := c.cc.Invoke(ctx, "/greptime.v1.meta.ProcedureService/migrate", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// ProcedureServiceServer is the server API for ProcedureService service.
+// All implementations must embed UnimplementedProcedureServiceServer
+// for forward compatibility
+type ProcedureServiceServer interface {
+	// Query a submitted procedure state
+	Query(context.Context, *QueryProcedureRequest) (*ProcedureStateResponse, error)
+	// Submits a DDL task
+	Ddl(context.Context, *DdlTaskRequest) (*DdlTaskResponse, error)
+	// Submits a region migration task
+	Migrate(context.Context, *MigrateRegionRequest) (*MigrateRegionResponse, error)
+	mustEmbedUnimplementedProcedureServiceServer()
+}
+
+// UnimplementedProcedureServiceServer must be embedded to have forward compatible implementations.
+type UnimplementedProcedureServiceServer struct {
+}
+
+func (UnimplementedProcedureServiceServer) Query(context.Context, *QueryProcedureRequest) (*ProcedureStateResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Query not implemented")
+}
+func (UnimplementedProcedureServiceServer) Ddl(context.Context, *DdlTaskRequest) (*DdlTaskResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Ddl not implemented")
+}
+func (UnimplementedProcedureServiceServer) Migrate(context.Context, *MigrateRegionRequest) (*MigrateRegionResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Migrate not implemented")
+}
+func (UnimplementedProcedureServiceServer) mustEmbedUnimplementedProcedureServiceServer() {}
+
+// UnsafeProcedureServiceServer may be embedded to opt out of forward compatibility for this service.
+// Use of this interface is not recommended, as added methods to ProcedureServiceServer will
+// result in compilation errors.
+type UnsafeProcedureServiceServer interface {
+	mustEmbedUnimplementedProcedureServiceServer()
+}
+
+func RegisterProcedureServiceServer(s grpc.ServiceRegistrar, srv ProcedureServiceServer) {
+	s.RegisterService(&ProcedureService_ServiceDesc, srv)
+}
+
+func _ProcedureService_Query_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(QueryProcedureRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(ProcedureServiceServer).Query(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/greptime.v1.meta.ProcedureService/query",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(ProcedureServiceServer).Query(ctx, req.(*QueryProcedureRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _ProcedureService_Ddl_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(DdlTaskRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(ProcedureServiceServer).Ddl(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/greptime.v1.meta.ProcedureService/ddl",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(ProcedureServiceServer).Ddl(ctx, req.(*DdlTaskRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _ProcedureService_Migrate_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(MigrateRegionRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(ProcedureServiceServer).Migrate(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/greptime.v1.meta.ProcedureService/migrate",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(ProcedureServiceServer).Migrate(ctx, req.(*MigrateRegionRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+// ProcedureService_ServiceDesc is the grpc.ServiceDesc for ProcedureService service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var ProcedureService_ServiceDesc = grpc.ServiceDesc{
+	ServiceName: "greptime.v1.meta.ProcedureService",
+	HandlerType: (*ProcedureServiceServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "query",
+			Handler:    _ProcedureService_Query_Handler,
+		},
+		{
+			MethodName: "ddl",
+			Handler:    _ProcedureService_Ddl_Handler,
+		},
+		{
+			MethodName: "migrate",
+			Handler:    _ProcedureService_Migrate_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "greptime/v1/meta/procedure.proto",
+}

go/greptime/v1/meta/region.pb.go

@@ -0,0 +1,288 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.28.1
+// 	protoc        v3.21.6
+// source: greptime/v1/meta/region.proto
+
+package meta
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type MigrateRegionRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Header            *RequestHeader `protobuf:"bytes,1,opt,name=header,proto3" json:"header,omitempty"`
+	RegionId          uint64         `protobuf:"varint,3,opt,name=region_id,json=regionId,proto3" json:"region_id,omitempty"`
+	FromPeer          uint64         `protobuf:"varint,4,opt,name=from_peer,json=fromPeer,proto3" json:"from_peer,omitempty"`
+	ToPeer            uint64         `protobuf:"varint,5,opt,name=to_peer,json=toPeer,proto3" json:"to_peer,omitempty"`
+	ReplayTimeoutSecs uint32         `protobuf:"varint,6,opt,name=replay_timeout_secs,json=replayTimeoutSecs,proto3" json:"replay_timeout_secs,omitempty"`
+}
+
+func (x *MigrateRegionRequest) Reset() {
+	*x = MigrateRegionRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_greptime_v1_meta_region_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *MigrateRegionRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*MigrateRegionRequest) ProtoMessage() {}
+
+func (x *MigrateRegionRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_greptime_v1_meta_region_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use MigrateRegionRequest.ProtoReflect.Descriptor instead.
+func (*MigrateRegionRequest) Descriptor() ([]byte, []int) {
+	return file_greptime_v1_meta_region_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *MigrateRegionRequest) GetHeader() *RequestHeader {
+	if x != nil {
+		return x.Header
+	}
+	return nil
+}
+
+func (x *MigrateRegionRequest) GetRegionId() uint64 {
+	if x != nil {
+		return x.RegionId
+	}
+	return 0
+}
+
+func (x *MigrateRegionRequest) GetFromPeer() uint64 {
+	if x != nil {
+		return x.FromPeer
+	}
+	return 0
+}
+
+func (x *MigrateRegionRequest) GetToPeer() uint64 {
+	if x != nil {
+		return x.ToPeer
+	}
+	return 0
+}
+
+func (x *MigrateRegionRequest) GetReplayTimeoutSecs() uint32 {
+	if x != nil {
+		return x.ReplayTimeoutSecs
+	}
+	return 0
+}
+
+type MigrateRegionResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Header *ResponseHeader `protobuf:"bytes,1,opt,name=header,proto3" json:"header,omitempty"`
+	Pid    *ProcedureId    `protobuf:"bytes,2,opt,name=pid,proto3" json:"pid,omitempty"`
+}
+
+func (x *MigrateRegionResponse) Reset() {
+	*x = MigrateRegionResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_greptime_v1_meta_region_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *MigrateRegionResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*MigrateRegionResponse) ProtoMessage() {}
+
+func (x *MigrateRegionResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_greptime_v1_meta_region_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use MigrateRegionResponse.ProtoReflect.Descriptor instead.
+func (*MigrateRegionResponse) Descriptor() ([]byte, []int) {
+	return file_greptime_v1_meta_region_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *MigrateRegionResponse) GetHeader() *ResponseHeader {
+	if x != nil {
+		return x.Header
+	}
+	return nil
+}
+
+func (x *MigrateRegionResponse) GetPid() *ProcedureId {
+	if x != nil {
+		return x.Pid
+	}
+	return nil
+}
+
+var File_greptime_v1_meta_region_proto protoreflect.FileDescriptor
+
+var file_greptime_v1_meta_region_proto_rawDesc = []byte{
+	0x0a, 0x1d, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2f, 0x76, 0x31, 0x2f, 0x6d, 0x65,
+	0x74, 0x61, 0x2f, 0x72, 0x65, 0x67, 0x69, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12,
+	0x10, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2e, 0x76, 0x31, 0x2e, 0x6d, 0x65, 0x74,
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+	0x22, 0xd2, 0x01, 0x0a, 0x14, 0x4d, 0x69, 0x67, 0x72, 0x61, 0x74, 0x65, 0x52, 0x65, 0x67, 0x69,
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+}
+
+var (
+	file_greptime_v1_meta_region_proto_rawDescOnce sync.Once
+	file_greptime_v1_meta_region_proto_rawDescData = file_greptime_v1_meta_region_proto_rawDesc
+)
+
+func file_greptime_v1_meta_region_proto_rawDescGZIP() []byte {
+	file_greptime_v1_meta_region_proto_rawDescOnce.Do(func() {
+		file_greptime_v1_meta_region_proto_rawDescData = protoimpl.X.CompressGZIP(file_greptime_v1_meta_region_proto_rawDescData)
+	})
+	return file_greptime_v1_meta_region_proto_rawDescData
+}
+
+var file_greptime_v1_meta_region_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
+var file_greptime_v1_meta_region_proto_goTypes = []interface{}{
+	(*MigrateRegionRequest)(nil),  // 0: greptime.v1.meta.MigrateRegionRequest
+	(*MigrateRegionResponse)(nil), // 1: greptime.v1.meta.MigrateRegionResponse
+	(*RequestHeader)(nil),         // 2: greptime.v1.meta.RequestHeader
+	(*ResponseHeader)(nil),        // 3: greptime.v1.meta.ResponseHeader
+	(*ProcedureId)(nil),           // 4: greptime.v1.meta.ProcedureId
+}
+var file_greptime_v1_meta_region_proto_depIdxs = []int32{
+	2, // 0: greptime.v1.meta.MigrateRegionRequest.header:type_name -> greptime.v1.meta.RequestHeader
+	3, // 1: greptime.v1.meta.MigrateRegionResponse.header:type_name -> greptime.v1.meta.ResponseHeader
+	4, // 2: greptime.v1.meta.MigrateRegionResponse.pid:type_name -> greptime.v1.meta.ProcedureId
+	3, // [3:3] is the sub-list for method output_type
+	3, // [3:3] is the sub-list for method input_type
+	3, // [3:3] is the sub-list for extension type_name
+	3, // [3:3] is the sub-list for extension extendee
+	0, // [0:3] is the sub-list for field type_name
+}
+
+func init() { file_greptime_v1_meta_region_proto_init() }
+func file_greptime_v1_meta_region_proto_init() {
+	if File_greptime_v1_meta_region_proto != nil {
+		return
+	}
+	file_greptime_v1_meta_common_proto_init()
+	if !protoimpl.UnsafeEnabled {
+		file_greptime_v1_meta_region_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*MigrateRegionRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_greptime_v1_meta_region_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*MigrateRegionResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_greptime_v1_meta_region_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   2,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_greptime_v1_meta_region_proto_goTypes,
+		DependencyIndexes: file_greptime_v1_meta_region_proto_depIdxs,
+		MessageInfos:      file_greptime_v1_meta_region_proto_msgTypes,
+	}.Build()
+	File_greptime_v1_meta_region_proto = out.File
+	file_greptime_v1_meta_region_proto_rawDesc = nil
+	file_greptime_v1_meta_region_proto_goTypes = nil
+	file_greptime_v1_meta_region_proto_depIdxs = nil
+}

java/src/main/java/greptime/v1/meta/Common.java

@@ -5943,6 +5943,508 @@ java.lang.String defaultValue);
 
   }
 
+  public interface ProcedureIdOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:greptime.v1.meta.ProcedureId)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>bytes key = 1;</code>
+     * @return The key.
+     */
+    com.google.protobuf.ByteString getKey();
+  }
+  /**
+   * <pre>
+   * Procedure identifer
+   * </pre>
+   *
+   * Protobuf type {@code greptime.v1.meta.ProcedureId}
+   */
+  public static final class ProcedureId extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:greptime.v1.meta.ProcedureId)
+      ProcedureIdOrBuilder {
+  private static final long serialVersionUID = 0L;
+    // Use ProcedureId.newBuilder() to construct.
+    private ProcedureId(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private ProcedureId() {
+      key_ = com.google.protobuf.ByteString.EMPTY;
+    }
+
+    @java.lang.Override
+    @SuppressWarnings({"unused"})
+    protected java.lang.Object newInstance(
+        UnusedPrivateParameter unused) {
+      return new ProcedureId();
+    }
+
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private ProcedureId(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            case 10: {
+
+              key_ = input.readBytes();
+              break;
+            }
+            default: {
+              if (!parseUnknownField(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (com.google.protobuf.UninitializedMessageException e) {
+        throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return greptime.v1.meta.Common.internal_static_greptime_v1_meta_ProcedureId_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return greptime.v1.meta.Common.internal_static_greptime_v1_meta_ProcedureId_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              greptime.v1.meta.Common.ProcedureId.class, greptime.v1.meta.Common.ProcedureId.Builder.class);
+    }
+
+    public static final int KEY_FIELD_NUMBER = 1;
+    private com.google.protobuf.ByteString key_;
+    /**
+     * <code>bytes key = 1;</code>
+     * @return The key.
+     */
+    @java.lang.Override
+    public com.google.protobuf.ByteString getKey() {
+      return key_;
+    }
+
+    private byte memoizedIsInitialized = -1;
+    @java.lang.Override
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    @java.lang.Override
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      if (!key_.isEmpty()) {
+        output.writeBytes(1, key_);
+      }
+      unknownFields.writeTo(output);
+    }
+
+    @java.lang.Override
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (!key_.isEmpty()) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeBytesSize(1, key_);
+      }
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
+      return size;
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof greptime.v1.meta.Common.ProcedureId)) {
+        return super.equals(obj);
+      }
+      greptime.v1.meta.Common.ProcedureId other = (greptime.v1.meta.Common.ProcedureId) obj;
+
+      if (!getKey()
+          .equals(other.getKey())) return false;
+      if (!unknownFields.equals(other.unknownFields)) return false;
+      return true;
+    }
+
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + KEY_FIELD_NUMBER;
+      hash = (53 * hash) + getKey().hashCode();
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static greptime.v1.meta.Common.ProcedureId parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static greptime.v1.meta.Common.ProcedureId parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static greptime.v1.meta.Common.ProcedureId parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static greptime.v1.meta.Common.ProcedureId parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static greptime.v1.meta.Common.ProcedureId parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static greptime.v1.meta.Common.ProcedureId parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static greptime.v1.meta.Common.ProcedureId parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static greptime.v1.meta.Common.ProcedureId parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static greptime.v1.meta.Common.ProcedureId parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+    public static greptime.v1.meta.Common.ProcedureId parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static greptime.v1.meta.Common.ProcedureId parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static greptime.v1.meta.Common.ProcedureId parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    @java.lang.Override
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(greptime.v1.meta.Common.ProcedureId prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * <pre>
+     * Procedure identifer
+     * </pre>
+     *
+     * Protobuf type {@code greptime.v1.meta.ProcedureId}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
+        // @@protoc_insertion_point(builder_implements:greptime.v1.meta.ProcedureId)
+        greptime.v1.meta.Common.ProcedureIdOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return greptime.v1.meta.Common.internal_static_greptime_v1_meta_ProcedureId_descriptor;
+      }
+
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return greptime.v1.meta.Common.internal_static_greptime_v1_meta_ProcedureId_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                greptime.v1.meta.Common.ProcedureId.class, greptime.v1.meta.Common.ProcedureId.Builder.class);
+      }
+
+      // Construct using greptime.v1.meta.Common.ProcedureId.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
+        }
+      }
+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        key_ = com.google.protobuf.ByteString.EMPTY;
+
+        return this;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return greptime.v1.meta.Common.internal_static_greptime_v1_meta_ProcedureId_descriptor;
+      }
+
+      @java.lang.Override
+      public greptime.v1.meta.Common.ProcedureId getDefaultInstanceForType() {
+        return greptime.v1.meta.Common.ProcedureId.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public greptime.v1.meta.Common.ProcedureId build() {
+        greptime.v1.meta.Common.ProcedureId result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      @java.lang.Override
+      public greptime.v1.meta.Common.ProcedureId buildPartial() {
+        greptime.v1.meta.Common.ProcedureId result = new greptime.v1.meta.Common.ProcedureId(this);
+        result.key_ = key_;
+        onBuilt();
+        return result;
+      }
+
+      @java.lang.Override
+      public Builder clone() {
+        return super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof greptime.v1.meta.Common.ProcedureId) {
+          return mergeFrom((greptime.v1.meta.Common.ProcedureId)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(greptime.v1.meta.Common.ProcedureId other) {
+        if (other == greptime.v1.meta.Common.ProcedureId.getDefaultInstance()) return this;
+        if (other.getKey() != com.google.protobuf.ByteString.EMPTY) {
+          setKey(other.getKey());
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      @java.lang.Override
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        greptime.v1.meta.Common.ProcedureId parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (greptime.v1.meta.Common.ProcedureId) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+
+      private com.google.protobuf.ByteString key_ = com.google.protobuf.ByteString.EMPTY;
+      /**
+       * <code>bytes key = 1;</code>
+       * @return The key.
+       */
+      @java.lang.Override
+      public com.google.protobuf.ByteString getKey() {
+        return key_;
+      }
+      /**
+       * <code>bytes key = 1;</code>
+       * @param value The key to set.
+       * @return This builder for chaining.
+       */
+      public Builder setKey(com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        key_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>bytes key = 1;</code>
+       * @return This builder for chaining.
+       */
+      public Builder clearKey() {
+        
+        key_ = getDefaultInstance().getKey();
+        onChanged();
+        return this;
+      }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFields(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
+
+      // @@protoc_insertion_point(builder_scope:greptime.v1.meta.ProcedureId)
+    }
+
+    // @@protoc_insertion_point(class_scope:greptime.v1.meta.ProcedureId)
+    private static final greptime.v1.meta.Common.ProcedureId DEFAULT_INSTANCE;
+    static {
+      DEFAULT_INSTANCE = new greptime.v1.meta.Common.ProcedureId();
+    }
+
+    public static greptime.v1.meta.Common.ProcedureId getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<ProcedureId>
+        PARSER = new com.google.protobuf.AbstractParser<ProcedureId>() {
+      @java.lang.Override
+      public ProcedureId parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new ProcedureId(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<ProcedureId> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<ProcedureId> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public greptime.v1.meta.Common.ProcedureId getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
   private static final com.google.protobuf.Descriptors.Descriptor
     internal_static_greptime_v1_meta_RequestHeader_descriptor;
   private static final 
@@ -5988,6 +6490,11 @@ java.lang.String defaultValue);
   private static final 
     com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_greptime_v1_meta_KeyValue_fieldAccessorTable;
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_greptime_v1_meta_ProcedureId_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_greptime_v1_meta_ProcedureId_fieldAccessorTable;
 
   public static com.google.protobuf.Descriptors.FileDescriptor
       getDescriptor() {
@@ -6014,10 +6521,10 @@ java.lang.String defaultValue);
       "\022\022\n\ntable_name\030\003 \001(\t\"L\n\014TimeInterval\022\036\n\026" +
       "start_timestamp_millis\030\001 \001(\003\022\034\n\024end_time" +
       "stamp_millis\030\002 \001(\003\"&\n\010KeyValue\022\013\n\003key\030\001 " +
-      "\001(\014\022\r\n\005value\030\002 \001(\014*\"\n\004Role\022\014\n\010DATANODE\020\000" +
+      "\001(\014\022\r\n\005value\030\002 \001(\014\"\032\n\013ProcedureId\022\013\n\003key" +
-      "\022\014\n\010FRONTEND\020\001B<Z:github.com/GreptimeTea" +
+      "\030\001 \001(\014*\"\n\004Role\022\014\n\010DATANODE\020\000\022\014\n\010FRONTEND" +
-      "m/greptime-proto/go/greptime/v1/metab\006pr" +
+      "\020\001B<Z:github.com/GreptimeTeam/greptime-p" +
-      "oto3"
+      "roto/go/greptime/v1/metab\006proto3"
     };
     descriptor = com.google.protobuf.Descriptors.FileDescriptor
       .internalBuildGeneratedFileFrom(descriptorData,
@@ -6077,6 +6584,12 @@ java.lang.String defaultValue);
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_greptime_v1_meta_KeyValue_descriptor,
         new java.lang.String[] { "Key", "Value", });
+    internal_static_greptime_v1_meta_ProcedureId_descriptor =
+      getDescriptor().getMessageTypes().get(8);
+    internal_static_greptime_v1_meta_ProcedureId_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_greptime_v1_meta_ProcedureId_descriptor,
+        new java.lang.String[] { "Key", });
   }
 
   // @@protoc_insertion_point(outer_class_scope)

proto/greptime/v1/meta/common.proto

@@ -73,3 +73,8 @@ message KeyValue {
   // value is the value held by the key, in bytes.
   bytes value = 2;
 }
+
+// Procedure identifer
+message ProcedureId {
+  bytes key = 1;
+}

proto/greptime/v1/meta/ddl.proto

@@ -22,12 +22,6 @@ import "greptime/v1/meta/common.proto";
 import "greptime/v1/meta/route.proto";
 import "greptime/v1/ddl.proto";
 
-
-service DdlTask {
-    // Submits a DDL task to meta.
-    rpc SubmitDdlTask(SubmitDdlTaskRequest) returns (SubmitDdlTaskResponse);
-}
-
 enum DdlTaskType {
     Create = 0;
     Drop = 1;
@@ -57,7 +51,7 @@ message TruncateTableTask {
     TruncateTableExpr truncate_table = 1;
 }
 
-message SubmitDdlTaskRequest {
+message DdlTaskRequest {
     RequestHeader header = 1;
 
     oneof task {
@@ -71,10 +65,9 @@ message SubmitDdlTaskRequest {
      }
 }
 
-message SubmitDdlTaskResponse {
+message DdlTaskResponse {
     ResponseHeader header = 1;
-    // Key is the identifier for the ddl task.
+    ProcedureId pid = 2;
-    bytes key = 2;
 
     // Returns if table created.
     // TODO(jeremy): remove it?

proto/greptime/v1/meta/procedure.proto

@@ -0,0 +1,42 @@
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto3";
+
+package greptime.v1.meta;
+
+option go_package = "github.com/GreptimeTeam/greptime-proto/go/greptime/v1/meta";
+
+import "greptime/v1/meta/common.proto";
+import "greptime/v1/meta/ddl.proto";
+import "greptime/v1/meta/region.proto";
+
+enum ProcedureStatus {
+    Running = 0;
+    Done = 1;
+    Retrying = 2;
+    Failed = 3;
+}
+
+message QueryProcedureRequest {
+    RequestHeader header = 1;
+    ProcedureId pid = 2;
+}
+
+message ProcedureStateResponse {
+    ResponseHeader header = 1;
+    ProcedureStatus status = 2;
+    string error = 3;
+}
+
+service ProcedureService {
+    // Query a submitted procedure state
+    rpc query(QueryProcedureRequest) returns (ProcedureStateResponse);
+
+    // Submits a DDL task
+    rpc ddl(DdlTaskRequest) returns (DdlTaskResponse);
+
+    // Submits a region migration task
+    rpc migrate(MigrateRegionRequest) returns (MigrateRegionResponse);
+}

proto/greptime/v1/meta/region.proto

@@ -0,0 +1,34 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto3";
+
+package greptime.v1.meta;
+
+option go_package = "github.com/GreptimeTeam/greptime-proto/go/greptime/v1/meta";
+
+import "greptime/v1/meta/common.proto";
+
+message MigrateRegionRequest {
+    RequestHeader header = 1;
+    uint64 region_id = 3;
+    uint64 from_peer = 4;
+    uint64 to_peer = 5;
+    uint32 replay_timeout_secs = 6;
+}
+
+message MigrateRegionResponse {
+    ResponseHeader header = 1;
+    ProcedureId pid = 2;
+}

src/v1/meta.rs

@@ -179,7 +179,9 @@ gen_set_header!(CompareAndPutRequest);
 gen_set_header!(DeleteRangeRequest);
 gen_set_header!(LockRequest);
 gen_set_header!(UnlockRequest);
-gen_set_header!(SubmitDdlTaskRequest);
+gen_set_header!(DdlTaskRequest);
+gen_set_header!(MigrateRegionRequest);
+gen_set_header!(QueryProcedureRequest);
 
 #[cfg(test)]
 mod tests {