| /** |
| * 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.server.resourcemanager.recovery.records.impl.pb; |
| |
| import org.apache.hadoop.yarn.proto.YarnServerResourceManagerRecoveryProtos.EpochProto; |
| import org.apache.hadoop.yarn.proto.YarnServerResourceManagerRecoveryProtos.EpochProtoOrBuilder; |
| |
| |
| import org.apache.hadoop.yarn.server.resourcemanager.recovery.records.Epoch; |
| |
| public class EpochPBImpl extends Epoch { |
| |
| EpochProto proto = EpochProto.getDefaultInstance(); |
| EpochProto.Builder builder = null; |
| boolean viaProto = false; |
| |
| public EpochPBImpl() { |
| builder = EpochProto.newBuilder(); |
| } |
| |
| public EpochPBImpl(EpochProto proto) { |
| this.proto = proto; |
| viaProto = true; |
| } |
| |
| public EpochProto getProto() { |
| proto = viaProto ? proto : builder.build(); |
| viaProto = true; |
| return proto; |
| } |
| |
| private void maybeInitBuilder() { |
| if (viaProto || builder == null) { |
| builder = EpochProto.newBuilder(proto); |
| } |
| viaProto = false; |
| } |
| |
| @Override |
| public long getEpoch() { |
| EpochProtoOrBuilder p = viaProto ? proto : builder; |
| return p.getEpoch(); |
| } |
| |
| @Override |
| public void setEpoch(long sequentialNumber) { |
| maybeInitBuilder(); |
| builder.setEpoch(sequentialNumber); |
| } |
| |
| } |