org.apache.hadoop.yarn.api.records.impl.pb.ContainerIdPBImpl.java Source code

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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.hadoop.yarn.api.records.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.ContainerId;
import org.apache.hadoop.yarn.proto.YarnProtos.ApplicationAttemptIdProto;
import org.apache.hadoop.yarn.proto.YarnProtos.ContainerIdProto;

import com.google.common.base.Preconditions;

@Private
@Unstable
public class ContainerIdPBImpl extends ContainerId {
    ContainerIdProto proto = null;
    ContainerIdProto.Builder builder = null;
    private ApplicationAttemptId applicationAttemptId = null;

    public ContainerIdPBImpl() {
        builder = ContainerIdProto.newBuilder();
    }

    public ContainerIdPBImpl(ContainerIdProto proto) {
        this.proto = proto;
        this.applicationAttemptId = convertFromProtoFormat(proto.getAppAttemptId());
    }

    public ContainerIdProto getProto() {
        return proto;
    }

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

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

    @Override
    protected void setContainerId(long 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;
    }
}