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The ActiveMQ Message Broker implementation
/**
* 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.activemq.usage;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.ThreadPoolExecutor;
import org.apache.activemq.Service;
import org.apache.activemq.broker.scheduler.JobSchedulerStore;
import org.apache.activemq.store.PListStore;
import org.apache.activemq.store.PersistenceAdapter;
/**
* Holder for Usage instances for memory, store and temp files Main use case is
* manage memory usage.
*
* @org.apache.xbean.XBean
*
*/
public class SystemUsage implements Service {
private SystemUsage parent;
private String name;
private MemoryUsage memoryUsage;
private StoreUsage storeUsage;
private TempUsage tempUsage;
private ThreadPoolExecutor executor;
private JobSchedulerUsage jobSchedulerUsage;
private String checkLimitsLogLevel = "warn";
/**
* True if someone called setSendFailIfNoSpace() on this particular usage
* manager
*/
private boolean sendFailIfNoSpaceExplicitySet;
private boolean sendFailIfNoSpace;
private boolean sendFailIfNoSpaceAfterTimeoutExplicitySet;
private long sendFailIfNoSpaceAfterTimeout = 0;
private final List children = new CopyOnWriteArrayList();
public SystemUsage() {
this("default", null, null, null);
}
public SystemUsage(String name, PersistenceAdapter adapter, PListStore tempStore, JobSchedulerStore jobSchedulerStore) {
this.parent = null;
this.name = name;
this.memoryUsage = new MemoryUsage(name + ":memory");
this.storeUsage = new StoreUsage(name + ":store", adapter);
this.tempUsage = new TempUsage(name + ":temp", tempStore);
this.jobSchedulerUsage = new JobSchedulerUsage(name + ":jobScheduler", jobSchedulerStore);
this.memoryUsage.setExecutor(getExecutor());
this.storeUsage.setExecutor(getExecutor());
this.tempUsage.setExecutor(getExecutor());
}
public SystemUsage(SystemUsage parent, String name) {
this.parent = parent;
this.executor = parent.getExecutor();
this.name = name;
this.memoryUsage = new MemoryUsage(parent.memoryUsage, name + ":memory");
this.storeUsage = new StoreUsage(parent.storeUsage, name + ":store");
this.tempUsage = new TempUsage(parent.tempUsage, name + ":temp");
this.jobSchedulerUsage = new JobSchedulerUsage(parent.jobSchedulerUsage, name + ":jobScheduler");
this.memoryUsage.setExecutor(getExecutor());
this.storeUsage.setExecutor(getExecutor());
this.tempUsage.setExecutor(getExecutor());
}
public String getName() {
return name;
}
/**
* @return the memoryUsage
*/
public MemoryUsage getMemoryUsage() {
return this.memoryUsage;
}
/**
* @return the storeUsage
*/
public StoreUsage getStoreUsage() {
return this.storeUsage;
}
/**
* @return the tempDiskUsage
*/
public TempUsage getTempUsage() {
return this.tempUsage;
}
/**
* @return the schedulerUsage
*/
public JobSchedulerUsage getJobSchedulerUsage() {
return this.jobSchedulerUsage;
}
@Override
public String toString() {
return "UsageManager(" + getName() + ")";
}
@Override
public void start() {
if (parent != null) {
parent.addChild(this);
}
this.memoryUsage.start();
this.storeUsage.start();
this.tempUsage.start();
this.jobSchedulerUsage.start();
}
@Override
public void stop() {
if (parent != null) {
parent.removeChild(this);
}
this.memoryUsage.stop();
this.storeUsage.stop();
this.tempUsage.stop();
this.jobSchedulerUsage.stop();
}
/**
* Sets whether or not a send() should fail if there is no space free. The
* default value is false which means to block the send() method until space
* becomes available
*/
public void setSendFailIfNoSpace(boolean failProducerIfNoSpace) {
sendFailIfNoSpaceExplicitySet = true;
this.sendFailIfNoSpace = failProducerIfNoSpace;
}
public boolean isSendFailIfNoSpace() {
if (sendFailIfNoSpaceExplicitySet || parent == null) {
return sendFailIfNoSpace;
} else {
return parent.isSendFailIfNoSpace();
}
}
private void addChild(SystemUsage child) {
children.add(child);
}
private void removeChild(SystemUsage child) {
children.remove(child);
}
public SystemUsage getParent() {
return parent;
}
public void setParent(SystemUsage parent) {
this.parent = parent;
}
public boolean isSendFailIfNoSpaceExplicitySet() {
return sendFailIfNoSpaceExplicitySet;
}
public void setSendFailIfNoSpaceExplicitySet(boolean sendFailIfNoSpaceExplicitySet) {
this.sendFailIfNoSpaceExplicitySet = sendFailIfNoSpaceExplicitySet;
}
public long getSendFailIfNoSpaceAfterTimeout() {
if (sendFailIfNoSpaceAfterTimeoutExplicitySet || parent == null) {
return sendFailIfNoSpaceAfterTimeout;
} else {
return parent.getSendFailIfNoSpaceAfterTimeout();
}
}
public void setSendFailIfNoSpaceAfterTimeout(long sendFailIfNoSpaceAfterTimeout) {
this.sendFailIfNoSpaceAfterTimeoutExplicitySet = true;
this.sendFailIfNoSpaceAfterTimeout = sendFailIfNoSpaceAfterTimeout;
}
public void setName(String name) {
this.name = name;
this.memoryUsage.setName(name + ":memory");
this.storeUsage.setName(name + ":store");
this.tempUsage.setName(name + ":temp");
this.jobSchedulerUsage.setName(name + ":jobScheduler");
}
public void setMemoryUsage(MemoryUsage memoryUsage) {
if (memoryUsage.getName() == null) {
memoryUsage.setName(this.memoryUsage.getName());
}
if (parent != null) {
memoryUsage.setParent(parent.memoryUsage);
}
this.memoryUsage = memoryUsage;
this.memoryUsage.setExecutor(getExecutor());
}
public void setStoreUsage(StoreUsage storeUsage) {
if (storeUsage.getStore() == null) {
storeUsage.setStore(this.storeUsage.getStore());
}
if (storeUsage.getName() == null) {
storeUsage.setName(this.storeUsage.getName());
}
if (parent != null) {
storeUsage.setParent(parent.storeUsage);
}
this.storeUsage = storeUsage;
this.storeUsage.setExecutor(executor);
}
public void setTempUsage(TempUsage tempDiskUsage) {
if (tempDiskUsage.getStore() == null) {
tempDiskUsage.setStore(this.tempUsage.getStore());
}
if (tempDiskUsage.getName() == null) {
tempDiskUsage.setName(this.tempUsage.getName());
}
if (parent != null) {
tempDiskUsage.setParent(parent.tempUsage);
}
this.tempUsage = tempDiskUsage;
this.tempUsage.setExecutor(getExecutor());
}
public void setJobSchedulerUsage(JobSchedulerUsage jobSchedulerUsage) {
if (jobSchedulerUsage.getStore() == null) {
jobSchedulerUsage.setStore(this.jobSchedulerUsage.getStore());
}
if (jobSchedulerUsage.getName() == null) {
jobSchedulerUsage.setName(this.jobSchedulerUsage.getName());
}
if (parent != null) {
jobSchedulerUsage.setParent(parent.jobSchedulerUsage);
}
this.jobSchedulerUsage = jobSchedulerUsage;
this.jobSchedulerUsage.setExecutor(getExecutor());
}
/**
* @return the executor
*/
public ThreadPoolExecutor getExecutor() {
return this.executor;
}
/**
* @param executor
* the executor to set
*/
public void setExecutor(ThreadPoolExecutor executor) {
this.executor = executor;
if (this.memoryUsage != null) {
this.memoryUsage.setExecutor(this.executor);
}
if (this.storeUsage != null) {
this.storeUsage.setExecutor(this.executor);
}
if (this.tempUsage != null) {
this.tempUsage.setExecutor(this.executor);
}
if(this.jobSchedulerUsage != null) {
this.jobSchedulerUsage.setExecutor(this.executor);
}
}
public String getCheckLimitsLogLevel() {
return checkLimitsLogLevel;
}
public void setCheckLimitsLogLevel(String checkLimitsLogLevel) {
this.checkLimitsLogLevel = checkLimitsLogLevel;
}
}