// 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";
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;
}

message CreateTableTask {
    CreateTableExpr create_table = 1;
    repeated Partition partitions = 2;
    bytes table_info = 3;
}

message DropTableTask{
    DropTableExpr drop_table = 1;
}

message AlterTableTask{
    AlterExpr alter_table = 1;
}

message TruncateTableTask {
    TruncateTableExpr truncate_table = 1;
}

message SubmitDdlTaskRequest {
    RequestHeader header = 1;

    oneof task {
        CreateTableTask create_table_task = 2;
        DropTableTask drop_table_task = 3;
        AlterTableTask alter_table_task = 4;
        TruncateTableTask truncate_table_task = 5;
     }
}

message SubmitDdlTaskResponse {
    ResponseHeader header = 1;
    // Key is the identifier for the ddl task.
    bytes key = 2;

    // Returns if table created.
    TableId table_id = 4;
}