net.welen.jmole.Lifecycle Maven / Gradle / Ivy
package net.welen.jmole;
/*
* #%L
* JMole, https://bitbucket.org/awelen/jmole
* %%
* Copyright (C) 2015 - 2018 Anders Welén, [email protected]
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* .
* #L%
*/
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ejb.Singleton;
import javax.ejb.Startup;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import net.welen.jmole.protocols.Protocol;
import net.welen.jmole.protocols.cloudwatch.CloudWatch;
import net.welen.jmole.protocols.logstash.Logstash;
import net.welen.jmole.protocols.munin.Munin;
import net.welen.jmole.protocols.nrpe.NRPE;
import net.welen.jmole.protocols.statsd.Statsd;
import net.welen.jmole.protocols.syslog.Syslog;
import net.welen.jmole.protocols.zabbix.Zabbix;
/**
* A Java EE Singleton bean that is used to handle the lifecycle of JMole.
*
* In a non Java EE environment it may be used a POJO to start and stop JMole.
*/
@Singleton
@Startup
public class Lifecycle {
private final static Logger LOG = Logger.getLogger(Lifecycle.class.getName());
private static JMole jmole;
private static Protocol[] protocols = { new Munin(), new NRPE(), new Zabbix(), new Statsd(), new net.welen.jmole.protocols.logger.Logger(), new Syslog(), new Logstash(), new CloudWatch()};
private static boolean running = false;
/**
* Starts up JMole and all activated protocols
*/
public static synchronized void setup() {
if (running) {
return;
}
running = true;
LOG.log(Level.INFO, "Starting JMole");
try {
jmole = new JMole();
jmole.register();
jmole.configure();
// Start protocols
for (Protocol protocol : protocols) {
if (protocol.isEnabled()) {
protocol.startProtocol(jmole);
}
}
} catch (Throwable t) {
throw new RuntimeException(t);
}
}
/**
* Stops JMole and all activated protocols
*/
public static void cleanup() {
LOG.log(Level.INFO, "Stopping JMole");
try {
// Stop protocols
for (Protocol protocol : protocols) {
if (protocol.isEnabled()) {
protocol.stopProtocol();
}
}
jmole.unregister();
running = false;
} catch (Throwable t) {
throw new RuntimeException(t);
}
}
@PostConstruct
private void setupNotStatic() {
setup();
}
@PreDestroy
private void cleanupNotStatic() {
cleanup();
}
}