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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) [2016-2017] Payara Foundation and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://github.com/payara/Payara/blob/master/LICENSE.txt
* See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* The Payara Foundation designates this particular file as subject to the "Classpath"
* exception as provided by the Payara Foundation in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package fish.payara.jmx.monitoring;
import fish.payara.jmx.monitoring.configuration.MonitoringServiceConfiguration;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.TimeUnit;
import javax.annotation.PostConstruct;
import javax.inject.Inject;
import javax.inject.Named;
import javax.naming.NamingException;
import org.glassfish.api.StartupRunLevel;
import org.glassfish.api.admin.ServerEnvironment;
import org.glassfish.api.event.EventListener;
import org.glassfish.api.event.EventTypes;
import org.glassfish.api.event.Events;
import org.glassfish.hk2.runlevel.RunLevel;
import org.jvnet.hk2.annotations.Optional;
import org.jvnet.hk2.annotations.Service;
import org.jvnet.hk2.config.types.Property;
import javax.management.MBeanServer;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import javax.management.InstanceNotFoundException;
import javax.management.MBeanException;
import javax.management.ReflectionException;
import static java.lang.management.ManagementFactory.getPlatformMBeanServer;
/**
* Service which monitors a set of MBeans and their attributes while logging the data as a series of key-value pairs.
*
* @author savage
*/
@Service(name = "payara-monitoring")
@RunLevel(StartupRunLevel.VAL)
public class MonitoringService implements EventListener {
private final String PREFIX = "payara-monitoring-service(";
@Inject
@Named(ServerEnvironment.DEFAULT_INSTANCE_NAME)
@Optional
MonitoringServiceConfiguration configuration;
@Inject
private Events events;
private final AtomicInteger threadNumber = new AtomicInteger(1);
private ScheduledExecutorService executor;
private MonitoringFormatter formatter;
private boolean enabled;
private int amxBootDelay = 10;
private int monitoringDelay = amxBootDelay + 15;
@PostConstruct
public void postConstruct() throws NamingException {
events.register(this);
}
@Override
public void event(Event event) {
if (event.is(EventTypes.SERVER_SHUTDOWN) ) {
shutdownMonitoringService();
} else if (event.is(EventTypes.SERVER_READY)) {
if (configuration != null && Boolean.valueOf(configuration.getEnabled())) {
enabled = Boolean.valueOf(configuration.getEnabled());
bootstrapMonitoringService();
}
}
}
/**
* Bootstraps the monitoring service.
* Creates a thread pool for the ScheduledExecutorService.
* Schedules the AMXBoot class to execute if AMX is enabled.
* Schedules the MonitoringFormatter to execute at a specified fixed rate
* if enabled in the configuration.
*/
private void bootstrapMonitoringService() {
if (configuration != null) {
executor = Executors.newScheduledThreadPool(2, new ThreadFactory() {
@Override
public Thread newThread(Runnable r) {
return new Thread(r, PREFIX.concat(Integer.toString(threadNumber.getAndIncrement())).concat(")")
);
}
});
final MBeanServer server = getPlatformMBeanServer();
formatter = new MonitoringFormatter(server, buildJobs());
Logger.getLogger(MonitoringService.class.getName()).log(Level.INFO, "Monitoring Service will startup");
if (Boolean.valueOf(configuration.getAmx())) {
executor.schedule(new AMXBoot(server), amxBootDelay, TimeUnit.SECONDS);
}
executor.scheduleAtFixedRate(formatter, monitoringDelay,
TimeUnit.SECONDS.convert(Long.valueOf(configuration.getLogFrequency()),
TimeUnit.valueOf(configuration.getLogFrequencyUnit())),
TimeUnit.SECONDS);
}
}
/**
* Shuts the scheduler down.
*/
private void shutdownMonitoringService() {
if (executor != null) {
Logger.getLogger(MonitoringService.class.getName()).log(Level.INFO, "Monitoring Service will shutdown");
executor.shutdownNow();
}
}
/**
* Sets the service to be enabled/disabled.
* Has no effect if there is no change in the value.
* @param enabled
*/
public void setEnabled(Boolean enabled) {
amxBootDelay = 0;
monitoringDelay = amxBootDelay + 5;
if (!this.enabled && enabled) {
this.enabled = enabled;
bootstrapMonitoringService();
} else if (this.enabled && !enabled) {
this.enabled = enabled;
shutdownMonitoringService();
}
}
/**
* Builds the monitoring jobs from the service configuration.
*
* @return List of built jobs.
*/
private List buildJobs() {
List jobs = new LinkedList<>();
for (Property prop : configuration.getProperty()) {
boolean exists = false;
for (MonitoringJob job : jobs) {
if (job.getMBean().getCanonicalKeyPropertyListString()
.equals(prop.getValue())) {
job.addAttribute(prop.getName());
exists = true;
break;
}
}
if (!exists) {
ObjectName name;
List list;
try {
name = new ObjectName(prop.getValue());
list = new LinkedList<>();
list.add(prop.getName());
jobs.add(new MonitoringJob(name, list));
} catch (MalformedObjectNameException ex) {
Logger.getLogger(MonitoringService.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
return jobs;
}
/**
* Runnable class to schedule invocation of the bootAMX operation.
*
* @author savage
*/
private static class AMXBoot implements Runnable {
private final String BOOT_AMX_MBEAN_NAME = "amx-support:type=boot-amx";
private final String BOOT_AMX_OPERATION_NAME = "bootAMX";
private final MBeanServer server;
/**
* Constructor for the AMXBoot class.
*
* @param server MBeanServer to invoke the bootAMX operation on.
*/
public AMXBoot(MBeanServer server) {
this.server = server;
}
/**
* Class runnable method.
* Boots AMX by invoking the bootAMX operation on the boot-amx MBean.
*/
@Override
public void run() {
try {
ObjectName bootAMXObject = new ObjectName(BOOT_AMX_MBEAN_NAME);
server.invoke(bootAMXObject, BOOT_AMX_OPERATION_NAME, null, null);
} catch (MalformedObjectNameException | InstanceNotFoundException | MBeanException | ReflectionException ex) {
Logger.getLogger(MonitoringService.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
}