/**
* 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 java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.apache.hadoop.yarn.api.records.ApplicationReport;
import org.apache.hadoop.yarn.api.records.ProtoBase;
import org.apache.hadoop.yarn.api.records.QueueInfo;
import org.apache.hadoop.yarn.api.records.QueueState;
import org.apache.hadoop.yarn.proto.YarnProtos.ApplicationReportProto;
import org.apache.hadoop.yarn.proto.YarnProtos.QueueInfoProto;
import org.apache.hadoop.yarn.proto.YarnProtos.QueueInfoProtoOrBuilder;
import org.apache.hadoop.yarn.proto.YarnProtos.QueueStateProto;
import org.apache.hadoop.yarn.util.ProtoUtils;
public class QueueInfoPBImpl extends ProtoBase<QueueInfoProto> implements
QueueInfo {
QueueInfoProto proto = QueueInfoProto.getDefaultInstance();
QueueInfoProto.Builder builder = null;
boolean viaProto = false;
List<ApplicationReport> applicationsList;
List<QueueInfo> childQueuesList;
public QueueInfoPBImpl() {
builder = QueueInfoProto.newBuilder();
}
public QueueInfoPBImpl(QueueInfoProto proto) {
this.proto = proto;
viaProto = true;
}
@Override
public List<ApplicationReport> getApplications() {
initLocalApplicationsList();
return this.applicationsList;
}
@Override
public float getCapacity() {
QueueInfoProtoOrBuilder p = viaProto ? proto : builder;
return (p.hasCapacity()) ? p.getCapacity() : -1;
}
@Override
public List<QueueInfo> getChildQueues() {
initLocalChildQueuesList();
return this.childQueuesList;
}
@Override
public float getCurrentCapacity() {
QueueInfoProtoOrBuilder p = viaProto ? proto : builder;
return (p.hasCurrentCapacity()) ? p.getCurrentCapacity() : 0;
}
@Override
public float getMaximumCapacity() {
QueueInfoProtoOrBuilder p = viaProto ? proto : builder;
return (p.hasMaximumCapacity()) ? p.getMaximumCapacity() : -1;
}
@Override
public String getQueueName() {
QueueInfoProtoOrBuilder p = viaProto ? proto : builder;
return (p.hasQueueName()) ? p.getQueueName() : null;
}
@Override
public QueueState getQueueState() {
QueueInfoProtoOrBuilder p = viaProto ? proto : builder;
if (!p.hasState()) {
return null;
}
return convertFromProtoFormat(p.getState());
}
@Override
public void setApplications(List<ApplicationReport> applications) {
if (applications == null) {
builder.clearApplications();
}
this.applicationsList = applications;
}
@Override
public void setCapacity(float capacity) {
maybeInitBuilder();
builder.setCapacity(capacity);
}
@Override
public void setChildQueues(List<QueueInfo> childQueues) {
if (childQueues == null) {
builder.clearChildQueues();
}
this.childQueuesList = childQueues;
}
@Override
public void setCurrentCapacity(float currentCapacity) {
maybeInitBuilder();
builder.setCurrentCapacity(currentCapacity);
}
@Override
public void setMaximumCapacity(float maximumCapacity) {
maybeInitBuilder();
builder.setMaximumCapacity(maximumCapacity);
}
@Override
public void setQueueName(String queueName) {
maybeInitBuilder();
if (queueName == null) {
builder.clearQueueName();
return;
}
builder.setQueueName(queueName);
}
@Override
public void setQueueState(QueueState queueState) {
maybeInitBuilder();
if (queueState == null) {
builder.clearState();
return;
}
builder.setState(convertToProtoFormat(queueState));
}
@Override
public QueueInfoProto getProto() {
mergeLocalToProto();
proto = viaProto ? proto : builder.build();
viaProto = true;
return proto;
}
private void initLocalApplicationsList() {
if (this.applicationsList != null) {
return;
}
QueueInfoProtoOrBuilder p = viaProto ? proto : builder;
List<ApplicationReportProto> list = p.getApplicationsList();
applicationsList = new ArrayList<ApplicationReport>();
for (ApplicationReportProto a : list) {
applicationsList.add(convertFromProtoFormat(a));
}
}
private void addApplicationsToProto() {
maybeInitBuilder();
builder.clearApplications();
if (applicationsList == null)
return;
Iterable<ApplicationReportProto> iterable = new Iterable<ApplicationReportProto>() {
@Override
public Iterator<ApplicationReportProto> iterator() {
return new Iterator<ApplicationReportProto>() {
Iterator<ApplicationReport> iter = applicationsList.iterator();
@Override
public boolean hasNext() {
return iter.hasNext();
}
@Override
public ApplicationReportProto next() {
return convertToProtoFormat(iter.next());
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
};
builder.addAllApplications(iterable);
}
private void initLocalChildQueuesList() {
if (this.childQueuesList != null) {
return;
}
QueueInfoProtoOrBuilder p = viaProto ? proto : builder;
List<QueueInfoProto> list = p.getChildQueuesList();
childQueuesList = new ArrayList<QueueInfo>();
for (QueueInfoProto a : list) {
childQueuesList.add(convertFromProtoFormat(a));
}
}
private void addChildQueuesInfoToProto() {
maybeInitBuilder();
builder.clearChildQueues();
if (childQueuesList == null)
return;
Iterable<QueueInfoProto> iterable = new Iterable<QueueInfoProto>() {
@Override
public Iterator<QueueInfoProto> iterator() {
return new Iterator<QueueInfoProto>() {
Iterator<QueueInfo> iter = childQueuesList.iterator();
@Override
public boolean hasNext() {
return iter.hasNext();
}
@Override
public QueueInfoProto next() {
return convertToProtoFormat(iter.next());
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
};
builder.addAllChildQueues(iterable);
}
private void mergeLocalToBuilder() {
if (this.childQueuesList != null) {
addChildQueuesInfoToProto();
}
if (this.applicationsList != null) {
addApplicationsToProto();
}
}
private void mergeLocalToProto() {
if (viaProto)
maybeInitBuilder();
mergeLocalToBuilder();
proto = builder.build();
viaProto = true;
}
private void maybeInitBuilder() {
if (viaProto || builder == null) {
builder = QueueInfoProto.newBuilder(proto);
}
viaProto = false;
}
private ApplicationReportPBImpl convertFromProtoFormat(ApplicationReportProto a) {
return new ApplicationReportPBImpl(a);
}
private ApplicationReportProto convertToProtoFormat(ApplicationReport t) {
return ((ApplicationReportPBImpl)t).getProto();
}
private QueueInfoPBImpl convertFromProtoFormat(QueueInfoProto a) {
return new QueueInfoPBImpl(a);
}
private QueueInfoProto convertToProtoFormat(QueueInfo q) {
return ((QueueInfoPBImpl)q).getProto();
}
private QueueState convertFromProtoFormat(QueueStateProto q) {
return ProtoUtils.convertFromProtoFormat(q);
}
private QueueStateProto convertToProtoFormat(QueueState queueState) {
return ProtoUtils.convertToProtoFormat(queueState);
}
}