org.apache.tajo.master.container.impl.pb.TajoContainerIdPBImpl.java Source code

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Here is the source code for org.apache.tajo.master.container.impl.pb.TajoContainerIdPBImpl.java

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/**
 * 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.
 */

package org.apache.tajo.master.container.impl.pb;

import org.apache.hadoop.classification.InterfaceAudience.Private;
import org.apache.hadoop.classification.InterfaceStability.Unstable;
import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
import org.apache.hadoop.yarn.api.records.impl.pb.ApplicationAttemptIdPBImpl;
import org.apache.hadoop.yarn.proto.YarnProtos.ApplicationAttemptIdProto;

import com.google.common.base.Preconditions;
import org.apache.tajo.ipc.ContainerProtocol;
import org.apache.tajo.master.container.TajoContainerId;

/**
 * This class is borrowed from the following source code :
 * ${hadoop-yarn-common}/src/main/java/org/apache/hadoop/yarn/api/records/impl/pb/ContainerIdPBImpl.java
 *
 */
@Private
@Unstable
public class TajoContainerIdPBImpl extends TajoContainerId {
    ContainerProtocol.TajoContainerIdProto proto = null;
    ContainerProtocol.TajoContainerIdProto.Builder builder = null;
    private ApplicationAttemptId applicationAttemptId = null;

    public TajoContainerIdPBImpl() {
        builder = ContainerProtocol.TajoContainerIdProto.newBuilder();
    }

    public TajoContainerIdPBImpl(ContainerProtocol.TajoContainerIdProto proto) {
        this.proto = proto;
        this.applicationAttemptId = convertFromProtoFormat(proto.getAppAttemptId());
    }

    public ContainerProtocol.TajoContainerIdProto getProto() {
        return proto;
    }

    @Override
    public int getId() {
        Preconditions.checkNotNull(proto);
        return proto.getId();
    }

    @Override
    protected void setId(int id) {
        Preconditions.checkNotNull(builder);
        builder.setId((id));
    }

    @Override
    public ApplicationAttemptId getApplicationAttemptId() {
        return this.applicationAttemptId;
    }

    @Override
    protected void setApplicationAttemptId(ApplicationAttemptId atId) {
        if (atId != null) {
            Preconditions.checkNotNull(builder);
            builder.setAppAttemptId(convertToProtoFormat(atId));
        }
        this.applicationAttemptId = atId;
    }

    private ApplicationAttemptIdPBImpl convertFromProtoFormat(ApplicationAttemptIdProto p) {
        return new ApplicationAttemptIdPBImpl(p);
    }

    private ApplicationAttemptIdProto convertToProtoFormat(ApplicationAttemptId t) {
        return ((ApplicationAttemptIdPBImpl) t).getProto();
    }

    @Override
    protected void build() {
        proto = builder.build();
        builder = null;
    }
}