hadoop GetNodesToAttributesRequestPBImpl 源码

haddop GetNodesToAttributesRequestPBImpl 代码

文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/api/protocolrecords/impl/pb/GetNodesToAttributesRequestPBImpl.java

/**
 * 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.protocolrecords.impl.pb;

import org.apache.hadoop.thirdparty.protobuf.TextFormat;
import org.apache.hadoop.yarn.api.protocolrecords.GetNodesToAttributesRequest;
import org.apache.hadoop.yarn.proto.YarnServiceProtos;
import org.apache.hadoop.yarn.proto.YarnServiceProtos.GetNodesToAttributesRequestProto;


import java.util.HashSet;
import java.util.List;
import java.util.Set;

/**
 * Request to get hostname to attributes mapping.
 */
public class GetNodesToAttributesRequestPBImpl
    extends GetNodesToAttributesRequest {

  private GetNodesToAttributesRequestProto proto =
      GetNodesToAttributesRequestProto.getDefaultInstance();
  private GetNodesToAttributesRequestProto.Builder builder = null;

  private Set<String> hostNames = null;
  private boolean viaProto = false;

  public GetNodesToAttributesRequestPBImpl() {
    builder = GetNodesToAttributesRequestProto.newBuilder();
  }

  public GetNodesToAttributesRequestPBImpl(
      GetNodesToAttributesRequestProto proto) {
    this.proto = proto;
    viaProto = true;
  }

  public GetNodesToAttributesRequestProto getProto() {
    mergeLocalToProto();
    proto = viaProto ? proto : builder.build();
    viaProto = true;
    return proto;
  }

  private void mergeLocalToProto() {
    if (viaProto) {
      maybeInitBuilder();
    }
    mergeLocalToBuilder();
    proto = builder.build();
    viaProto = true;
  }

  private void mergeLocalToBuilder() {
    if (hostNames != null && !hostNames.isEmpty()) {
      builder.clearHostnames();
      builder.addAllHostnames(hostNames);
    }
  }

  @Override
  public int hashCode() {
    return getProto().hashCode();
  }

  @Override
  public boolean equals(Object other) {
    if (other == null) {
      return false;
    }
    if (other.getClass().isAssignableFrom(this.getClass())) {
      return this.getProto().equals(this.getClass().cast(other).getProto());
    }
    return false;
  }

  @Override
  public String toString() {
    return TextFormat.shortDebugString(getProto());
  }

  @Override
  public void setHostNames(Set<String> hostnames) {
    maybeInitBuilder();
    if (hostNames == null) {
      builder.clearHostnames();
    }
    this.hostNames = hostnames;
  }

  private void maybeInitBuilder() {
    if (viaProto || builder == null) {
      builder =
          YarnServiceProtos.GetNodesToAttributesRequestProto.newBuilder(proto);
    }
    viaProto = false;
  }

  @Override
  public Set<String> getHostNames() {
    initNodeToAttributes();
    return this.hostNames;
  }

  private void initNodeToAttributes() {
    if (this.hostNames != null) {
      return;
    }
    YarnServiceProtos.GetNodesToAttributesRequestProtoOrBuilder p =
        viaProto ? proto : builder;
    List<String> hostNamesList = p.getHostnamesList();
    this.hostNames = new HashSet<>();
    this.hostNames.addAll(hostNamesList);
  }

}

相关信息

hadoop 源码目录

相关文章

hadoop AllocateRequestPBImpl 源码

hadoop AllocateResponsePBImpl 源码

hadoop CancelDelegationTokenRequestPBImpl 源码

hadoop CancelDelegationTokenResponsePBImpl 源码

hadoop CommitResponsePBImpl 源码

hadoop ContainerUpdateRequestPBImpl 源码

hadoop ContainerUpdateResponsePBImpl 源码

hadoop FailApplicationAttemptRequestPBImpl 源码

hadoop FailApplicationAttemptResponsePBImpl 源码

hadoop FinishApplicationMasterRequestPBImpl 源码