syntax = "proto3";

package greptime.v1;

option java_package = "io.greptime.v1";
option java_outer_classname = "Database";
option go_package = "github.com/GreptimeTeam/greptime-proto/go/greptime/v1";

import "greptime/v1/ddl.proto";
import "greptime/v1/column.proto";
import "greptime/v1/prom.proto";
import "greptime/v1/common.proto";

service GreptimeDatabase {
  rpc Handle(GreptimeRequest) returns (GreptimeResponse);

  rpc HandleRequests(stream GreptimeRequest) returns (GreptimeResponse);
}

message GreptimeRequest {
  RequestHeader header = 1;
  oneof request {
    InsertRequest insert = 2;
    QueryRequest query = 3;
    DdlRequest ddl = 4;
    DeleteRequest delete = 5;
  }
}

message GreptimeResponse {
  ResponseHeader header = 1;
  oneof response {
    AffectedRows affected_rows = 2;
  }
}

message QueryRequest {
  oneof query {
    string sql = 1;
    bytes logical_plan = 2;
    PromRangeQuery prom_range_query = 3;
  }
}

message InsertRequest {
  string table_name = 1;

  // Data is represented here.
  repeated Column columns = 3;

  // The row_count of all columns, which include null and non-null values.
  //
  // Note: the row_count of all columns in a InsertRequest must be same.
  uint32 row_count = 4;

  // The region number of current insert request.
  uint32 region_number = 5;
}

message DeleteRequest {
  // The table name to delete from. Catalog name and schema name are in the `RequestHeader`.
  string table_name = 1;

  // The region number of current delete request.
  uint32 region_number = 2;

  // The data to delete, indexed by key columns.
  repeated Column key_columns = 3;

  // The row count of all columns above.
  uint32 row_count = 4;
}