/*
 * Copyright (c) 2008-2017, Hazelcast, Inc. All Rights Reserved.
 *
 * 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.
 */

package com.hazelcast.mapreduce.impl.operation;

import com.hazelcast.mapreduce.impl.MapReduceDataSerializerHook;
import com.hazelcast.mapreduce.impl.MapReduceService;
import com.hazelcast.mapreduce.impl.task.JobSupervisor;
import com.hazelcast.nio.Address;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;

import java.io.IOException;

/**
 * This operation is fired by the jobs owner node to remotely cancel the defined jobId on all nodes.
 */
public class CancelJobSupervisorOperation
        extends ProcessingOperation {

    private Address jobOwner;

    public CancelJobSupervisorOperation() {
    }

    public CancelJobSupervisorOperation(String name, String jobId) {
        super(name, jobId);
    }

    @Override
    public Object getResponse() {
        return Boolean.TRUE;
    }

    @Override
    public void run()
            throws Exception {
        MapReduceService mapReduceService = getService();
        mapReduceService.registerJobSupervisorCancellation(getName(), getJobId(), jobOwner);
        JobSupervisor supervisor = mapReduceService.getJobSupervisor(getName(), getJobId());
        if (supervisor != null) {
            supervisor.cancel();
        }
    }

    @Override
    protected void writeInternal(ObjectDataOutput out)
            throws IOException {
        super.writeInternal(out);
        out.writeObject(jobOwner);
    }

    @Override
    protected void readInternal(ObjectDataInput in)
            throws IOException {
        super.readInternal(in);
        jobOwner = in.readObject();
    }

    @Override
    public int getFactoryId() {
        return MapReduceDataSerializerHook.F_ID;
    }

    @Override
    public int getId() {
        return MapReduceDataSerializerHook.CANCEL_JOB_SUPERVISOR_OPERATION;
    }

}