hadoop ResourceSizingPBImpl 源码
haddop ResourceSizingPBImpl 代码
文件路径:/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/api/records/impl/pb/ResourceSizingPBImpl.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.records.impl.pb;
import org.apache.hadoop.classification.InterfaceAudience.Private;
import org.apache.hadoop.classification.InterfaceStability.Unstable;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.api.records.ResourceSizing;
import org.apache.hadoop.yarn.proto.YarnProtos.ResourceProto;
import org.apache.hadoop.yarn.proto.YarnProtos.ResourceSizingProto;
import org.apache.hadoop.yarn.proto.YarnProtos.ResourceSizingProtoOrBuilder;
/**
* Proto Implementation for {@link ResourceSizing} interface.
*/
@Private
@Unstable
public class ResourceSizingPBImpl extends ResourceSizing {
ResourceSizingProto proto = ResourceSizingProto.getDefaultInstance();
ResourceSizingProto.Builder builder = null;
boolean viaProto = false;
private Resource resources = null;
public ResourceSizingPBImpl() {
builder = ResourceSizingProto.newBuilder();
}
public ResourceSizingPBImpl(ResourceSizingProto proto) {
this.proto = proto;
viaProto = true;
}
public ResourceSizingProto getProto() {
mergeLocalToProto();
proto = viaProto ? proto : builder.build();
viaProto = true;
return proto;
}
private void mergeLocalToBuilder() {
if (this.resources != null) {
builder.setResources(convertToProtoFormat(this.resources));
}
}
private void mergeLocalToProto() {
if (viaProto) {
maybeInitBuilder();
}
mergeLocalToBuilder();
proto = builder.build();
viaProto = true;
}
private void maybeInitBuilder() {
if (viaProto || builder == null) {
builder = ResourceSizingProto.newBuilder(proto);
}
viaProto = false;
}
@Override
public int getNumAllocations() {
ResourceSizingProtoOrBuilder p = viaProto ? proto : builder;
return (p.getNumAllocations());
}
@Override
public void setNumAllocations(int numAllocations) {
maybeInitBuilder();
builder.setNumAllocations(numAllocations);
}
@Override
public Resource getResources() {
ResourceSizingProtoOrBuilder p = viaProto ? proto : builder;
if (this.resources != null) {
return this.resources;
}
if (!p.hasResources()) {
return null;
}
this.resources = convertFromProtoFormat(p.getResources());
return this.resources;
}
@Override
public void setResources(Resource resources) {
maybeInitBuilder();
if (resources == null) {
builder.clearResources();
}
this.resources = resources;
}
private ResourcePBImpl convertFromProtoFormat(ResourceProto r) {
return new ResourcePBImpl(r);
}
private ResourceProto convertToProtoFormat(Resource r) {
return ProtoUtils.convertToProtoFormat(r);
}
@Override
public String toString() {
return "ResourceSizingPBImpl{" +
"numAllocations=" + getNumAllocations() +
", resources=" + getResources() +
'}';
}
}
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