// 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";

service DdlTask {
    // Submits a DDL task to meta.
    rpc SubmitDdlTask(SubmitDdlTaskRequest) returns (SubmitDdlTaskResponse);
}

enum DdlTaskType {
    Create = 0;
}

message Task {
    DdlTaskType type = 1;
    
    oneof payload { bytes pd = 2; }
}

message SubmitDdlTaskRequest {
    RequestHeader header = 1;

    // The following information plays a bigger role in making messages traceable
    // and facilitating debugging.
    string subject = 2;
    string from = 3;
    string to = 4;
    // The unix timestamp in milliseconds.
    int64 timestamp_millis = 5;
    
    Task task = 6;
}

enum Status {
    Done = 0;
    Failed = 1;
    Cancelled = 2;
}

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

    Status status = 3;
}