/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

option java_package = "org.apache.reef.proto";
option java_outer_classname = "EvaluatorRuntimeProtocol";
option java_generic_services = true;
option java_generate_equals_and_hash = true;

import "reef_service_protos.proto";

// ACK the done message from the evaluator
message DoneEvaluatorProto {
}

// Stop the evaluator
message StopEvaluatorProto {
}

// Kill the evaluator
message KillEvaluatorProto {
}

// Start a task
message StartTaskProto {
    required string context_id = 1;
    required string configuration = 2;
}

message AddContextProto {
    required string parent_context_id = 1;
    required string context_configuration = 2;
    optional string service_configuration = 3;
}

message RemoveContextProto {
    required string context_id = 1;
}

// Stop the task
message StopTaskProto {
}

// Suspend the task
message SuspendTaskProto {
}

/////////////////////////////////////////
// Message aggregators

message ContextMessageProto {
    required string context_id = 1;
    required bytes message = 2;
}

message ContextControlProto {
    optional bytes task_message = 1;
    optional ContextMessageProto context_message = 2;

    optional AddContextProto    add_context    = 5;
    optional RemoveContextProto remove_context = 6;
    optional StartTaskProto     start_task     = 7;
    optional StopTaskProto      stop_task      = 8;
    optional SuspendTaskProto   suspend_task   = 9;
}

message EvaluatorHeartbeatProto {
    required int64 timestamp = 1;
    required EvaluatorStatusProto evaluator_status = 2;
    repeated ContextStatusProto   context_status   = 3;
    optional TaskStatusProto      task_status      = 4;
    optional bool                 recovery         = 5;  
}

message EvaluatorControlProto {
    required int64 timestamp = 1;
    required string identifier = 2;

    optional ContextControlProto context_control = 3;
    optional KillEvaluatorProto kill_evaluator = 4;
    optional StopEvaluatorProto stop_evaluator = 5;
    optional DoneEvaluatorProto done_evaluator = 6;
}