/**
* 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.broker.jmx;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import javax.management.ObjectName;
import javax.management.openmbean.CompositeDataSupport;
import javax.management.openmbean.CompositeType;
import javax.management.openmbean.TabularData;
import javax.management.openmbean.TabularDataSupport;
import javax.management.openmbean.TabularType;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.scheduler.JobSchedulerStore;
import org.apache.activemq.store.PersistenceAdapter;
import org.apache.activemq.usage.SystemUsage;
public class HealthView implements HealthViewMBean {
private ManagedRegionBroker broker;
private volatile String currentState = "Good";
public HealthView(ManagedRegionBroker broker) {
this.broker = broker;
}
@Override
public TabularData health() throws Exception {
OpenTypeSupport.OpenTypeFactory factory = OpenTypeSupport.getFactory(HealthStatus.class);
CompositeType ct = factory.getCompositeType();
TabularType tt = new TabularType("HealthStatus", "HealthStatus", ct, new String[] { "healthId", "level", "message", "resource" });
TabularDataSupport rc = new TabularDataSupport(tt);
List<HealthStatus> list = healthList();
for (HealthStatus healthStatus : list) {
rc.put(new CompositeDataSupport(ct, factory.getFields(healthStatus)));
}
return rc;
}
@Override
public List<HealthStatus> healthList() throws Exception {
List<HealthStatus> answer = new ArrayList<HealthStatus>();
Map<ObjectName, DestinationView> queueViews = broker.getQueueViews();
for (Map.Entry<ObjectName, DestinationView> entry : queueViews.entrySet()) {
DestinationView queue = entry.getValue();
if (queue.getConsumerCount() == 0 && queue.getProducerCount() > 0) {
ObjectName key = entry.getKey();
String message = "Queue " + queue.getName() + " has no consumers";
answer.add(new HealthStatus("org.apache.activemq.noConsumer", "WARNING", message, key.toString()));
}
}
/**
* Check persistence store directory limits
*/
BrokerService brokerService = broker.getBrokerService();
if (brokerService != null && brokerService.getPersistenceAdapter() != null) {
PersistenceAdapter adapter = brokerService.getPersistenceAdapter();
File dir = adapter.getDirectory();
if (brokerService.isPersistent()) {
SystemUsage usage = brokerService.getSystemUsage();
if (dir != null && usage != null) {
String dirPath = dir.getAbsolutePath();
if (!dir.isAbsolute()) {
dir = new File(dirPath);
}
while (dir != null && !dir.isDirectory()) {
dir = dir.getParentFile();
}
long storeSize = adapter.size();
long storeLimit = usage.getStoreUsage().getLimit();
long dirFreeSpace = dir.getUsableSpace();
if (storeSize != 0 && storeLimit != 0) {
int val = (int) ((storeSize * 100) / storeLimit);
if (val > 90) {
answer.add(new HealthStatus("org.apache.activemq.StoreLimit", "WARNING", "Message Store size is within " + val + "% of its limit",
adapter.toString()));
}
}
if ((storeLimit - storeSize) > dirFreeSpace) {
String message = "Store limit is " + storeLimit / (1024 * 1024) + " mb, whilst the data directory: " + dir.getAbsolutePath()
+ " only has " + dirFreeSpace / (1024 * 1024) + " mb of usable space";
answer.add(new HealthStatus("org.apache.activemq.FreeDiskSpaceLeft", "WARNING", message, adapter.toString()));
}
}
File tmpDir = brokerService.getTmpDataDirectory();
if (tmpDir != null) {
String tmpDirPath = tmpDir.getAbsolutePath();
if (!tmpDir.isAbsolute()) {
tmpDir = new File(tmpDirPath);
}
long storeSize = usage.getTempUsage().getUsage();
long storeLimit = usage.getTempUsage().getLimit();
while (tmpDir != null && !tmpDir.isDirectory()) {
tmpDir = tmpDir.getParentFile();
}
if (storeLimit != 0) {
int val = (int) ((storeSize * 100) / storeLimit);
if (val > 90) {
answer.add(new HealthStatus("org.apache.activemq.TempStoreLimit", "WARNING", "TempMessage Store size is within " + val
+ "% of its limit", adapter.toString()));
}
}
}
}
}
if (brokerService != null && brokerService.getJobSchedulerStore() != null) {
JobSchedulerStore scheduler = brokerService.getJobSchedulerStore();
File dir = scheduler.getDirectory();
if (brokerService.isPersistent()) {
SystemUsage usage = brokerService.getSystemUsage();
if (dir != null && usage != null) {
String dirPath = dir.getAbsolutePath();
if (!dir.isAbsolute()) {
dir = new File(dirPath);
}
while (dir != null && !dir.isDirectory()) {
dir = dir.getParentFile();
}
long storeSize = scheduler.size();
long storeLimit = usage.getJobSchedulerUsage().getLimit();
long dirFreeSpace = dir.getUsableSpace();
if (storeSize != 0 && storeLimit != 0) {
int val = (int) ((storeSize * 100) / storeLimit);
if (val > 90) {
answer.add(new HealthStatus("org.apache.activemq.JobSchedulerLimit", "WARNING", "JobSchedulerMessage Store size is within " + val
+ "% of its limit", scheduler.toString()));
}
}
if ((storeLimit - storeSize) > dirFreeSpace) {
String message = "JobSchedulerStore limit is " + storeLimit / (1024 * 1024) + " mb, whilst the data directory: "
+ dir.getAbsolutePath() + " only has " + dirFreeSpace / (1024 * 1024) + " mb of usable space";
answer.add(new HealthStatus("org.apache.activemq.FreeDiskSpaceLeft", "WARNING", message, scheduler.toString()));
}
}
}
}
StringBuilder currentState = new StringBuilder();
if (answer != null && !answer.isEmpty()) {
currentState.append("Getting Worried {");
for (HealthStatus hs : answer) {
currentState.append(hs).append(" , ");
}
currentState.append(" }");
} else {
currentState.append("Good");
}
this.currentState = currentState.toString();
return answer;
}
@Override
public String healthStatus() throws Exception {
// Must invoke healthList in order to update state.
healthList();
return getCurrentStatus();
}
/**
* @return String representation of the current Broker state
*/
@Override
public String getCurrentStatus() {
return this.currentState;
}
}