feat: add new json format (#281)

* feat: add new json format

* refactor: rename native format

* chore: store nested data type in json_native_extension

* feat: use json as a concrete type in proto

* Revert "feat: add `BuildIndexRequest` to `RegionRequestHeader` (#276)"

This reverts commit ee46a0eeaa.

proto/greptime/v1/column.proto

@@ -62,6 +62,7 @@ message Column {
 
     repeated ListValue list_values = 40;
     repeated StructValue struct_values = 41;
+    repeated Values json_values = 42;
   }
 
   // The array of non-null values in this column.

proto/greptime/v1/common.proto

@@ -198,10 +198,13 @@ message ColumnDataTypeExtension {
   oneof type_ext {
     DecimalTypeExtension decimal_type = 1;
     // Marks the binary column in proto is actually a JSON column.
+    // Deprecated
     JsonTypeExtension json_type = 2;
     VectorTypeExtension vector_type = 3;
     ListTypeExtension list_type = 4;
     StructTypeExtension struct_type = 5;
+    // Marks the data type is a logical json data
+    JsonNativeTypeExtension json_native_type = 6;
   }
 }
 
@@ -210,6 +213,7 @@ message DecimalTypeExtension {
   int32 scale = 2;
 }
 
+// Deprecated
 enum JsonTypeExtension {
   JSON_BINARY = 0;
 }
@@ -227,6 +231,11 @@ message StructTypeExtension {
   repeated StructField fields = 1;
 }
 
+message JsonNativeTypeExtension {
+  ColumnDataType datatype = 1;
+  ColumnDataTypeExtension datatype_extension = 2;
+}
+
 // Additional options for the column.
 message ColumnOptions {
   // Supported keys:

proto/greptime/v1/region/server.proto

@@ -59,7 +59,6 @@ message RegionRequest {
     BulkInsertRequest bulk_insert = 16;
     SyncRequest sync = 17;
     ListMetadataRequest list_metadata = 18;
-    BuildIndexRequest build_index = 19;
   }
 }
 
@@ -268,7 +267,3 @@ message SyncRequest {
 message ListMetadataRequest {
   repeated uint64 region_ids = 1;
 }
-
-message BuildIndexRequest {
-  uint64 region_id = 1;
-}

proto/greptime/v1/row.proto

@@ -79,6 +79,7 @@ message Value {
 
     ListValue list_value = 40;
     StructValue struct_value = 41;
+    Value json_value = 42;
   }
 }