feat: bulk wal entry (#239)

* Add bulk wal entry

* add sequence

* move arrow ipc to common

proto/greptime/v1/common.proto

@@ -196,3 +196,9 @@ message ColumnOptions {
   //      "fulltext": "{\"enable\": true, \"analyzer\": \"English\", \"case-sensitive\": false}"
   map<string, string> options = 1;
 }
+
+message ArrowIpc {
+  bytes schema = 1;
+  bytes data_header = 2;
+  bytes payload = 3;
+}

proto/greptime/v1/region/server.proto

@@ -187,16 +187,10 @@ message RegionColumnDef {
 
 // Request of bulk ingestion API.
 message BulkInsertRequest {
-  oneof body {
-    ArrowIpc arrow_ipc = 1;
-  }
-}
-
-message ArrowIpc {
   uint64 region_id = 1;
-  bytes schema = 2;
-  bytes data_header = 3;
-  bytes payload = 4;
+  oneof body {
+    ArrowIpc arrow_ipc = 2;
+  }
 }
 
 // Manifest info for mito engine.

proto/greptime/v1/wal.proto

@@ -19,6 +19,7 @@ package greptime.v1;
 option go_package = "github.com/GreptimeTeam/greptime-proto/go/greptime/v1";
 
 import "greptime/v1/row.proto";
+import "greptime/v1/common.proto";
 
 // Type of operation to rows.
 enum OpType {
@@ -55,4 +56,20 @@ message Mutation {
 message WalEntry {
   // List of mutations for a region.
   repeated Mutation mutations = 1;
+  // List of bulk insert requests.
+  repeated BulkWalEntry bulk_entries = 2;
+}
+
+message BulkWalEntry {
+  // Start WAL sequence of this entry.
+  uint64 sequence = 1;
+  // Max timestamp value.
+  int64 max_ts = 2;
+  // Min timestamp value.
+  int64 min_ts = 3;
+  // Timestamp column index.
+  uint32 timestamp_index = 4;
+  oneof body {
+    ArrowIpc arrow_ipc = 5;
+  }
 }