io.logspace.agent.shaded.quartz.impl.QuartzServer Maven / Gradle / Ivy
/*
* Copyright 2001-2009 Terracotta, Inc.
*
* Licensed 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 io.logspace.agent.shaded.quartz.impl;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import io.logspace.agent.shaded.quartz.Scheduler;
import io.logspace.agent.shaded.quartz.SchedulerException;
import io.logspace.agent.shaded.quartz.SchedulerFactory;
import io.logspace.agent.shaded.quartz.listeners.SchedulerListenerSupport;
/**
*
* Instantiates an instance of Quartz Scheduler as a stand-alone program, if
* the scheduler is configured for RMI it will be made available.
*
*
*
* The main() method of this class currently accepts 0 or 1 arguemtns, if there
* is an argument, and its value is "console", then the program
* will print a short message on the console (std-out) and wait for the user to
* type "exit" - at which time the scheduler will be shutdown.
*
*
*
* Future versions of this server should allow additional configuration for
* responding to scheduler events by allowing the user to specify {@link io.logspace.agent.shaded.quartz.JobListener},
* {@link io.logspace.agent.shaded.quartz.TriggerListener} and {@link io.logspace.agent.shaded.quartz.SchedulerListener}
* classes.
*
*
*
* Please read the Quartz FAQ entries about RMI before asking questions in the
* forums or mail-lists.
*
*
* @author James House
*/
public class QuartzServer extends SchedulerListenerSupport {
/*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* Data members.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
private Scheduler sched = null;
/*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* Constructors.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
QuartzServer() {
}
/*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* Interface.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
public void serve(SchedulerFactory schedFact, boolean console)
throws Exception {
sched = schedFact.getScheduler();
sched.start();
try {
Thread.sleep(3000l);
} catch (Exception ignore) {
}
System.out.println("\n*** The scheduler successfully started.");
if (console) {
System.out.println("\n");
System.out
.println("The scheduler will now run until you type \"exit\"");
System.out
.println(" If it was configured to export itself via RMI,");
System.out.println(" then other process may now use it.");
BufferedReader rdr = new BufferedReader(new InputStreamReader(
System.in));
while (true) {
System.out.print("Type 'exit' to shutdown the server: ");
if ("exit".equals(rdr.readLine())) {
break;
}
}
System.out.println("\n...Shutting down server...");
sched.shutdown(true);
}
}
/*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* SchedulerListener Interface.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
/**
*
* Called by the {@link Scheduler} when a serious error has
* occured within the scheduler - such as repeated failures in the JobStore,
* or the inability to instantiate a Job instance when its
* Trigger has fired.
*
*
*
* The getErrorCode() method of the given SchedulerException
* can be used to determine more specific information about the type of
* error that was encountered.
*
*/
@Override
public void schedulerError(String msg, SchedulerException cause) {
System.err.println("*** " + msg);
cause.printStackTrace();
}
/**
*
* Called by the {@link Scheduler} to inform the listener
* that it has shutdown.
*
*/
@Override
public void schedulerShutdown() {
System.out.println("\n*** The scheduler is now shutdown.");
sched = null;
}
/*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* Main Method.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
public static void main(String[] args) throws Exception {
// //Configure Log4J
// org.apache.log4j.PropertyConfigurator.configure(
// System.getProperty("log4jConfigFile", "log4j.properties"));
if (System.getSecurityManager() == null) {
System.setSecurityManager(new java.rmi.RMISecurityManager());
}
try {
QuartzServer server = new QuartzServer();
if (args.length == 0) {
server.serve(
new io.logspace.agent.shaded.quartz.impl.StdSchedulerFactory(), false);
} else if (args.length == 1 && args[0].equalsIgnoreCase("console")) {
server.serve(new io.logspace.agent.shaded.quartz.impl.StdSchedulerFactory(), true);
} else {
System.err.println("\nUsage: QuartzServer [console]");
}
} catch (Exception e) {
e.printStackTrace();
}
}
}