org.quartz.simpl.HostnameInstanceIdGenerator Maven / Gradle / Ivy
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SDK for dev_appserver (local development) with some of the dependencies shaded (repackaged)
/*
* Copyright 2004-2005 OpenSymphony
*
* 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 org.quartz.simpl;
import java.net.InetAddress;
import org.quartz.SchedulerException;
import org.quartz.spi.InstanceIdGenerator;
/**
*
* InstanceIdGenerator that names the scheduler instance using
* just the machine hostname.
*
*
*
* This class is useful when you know that your scheduler instance will be the
* only one running on a particular machine. Each time the scheduler is
* restarted, it will get the same instance id as long as the machine is not
* renamed.
*
*
* @see InstanceIdGenerator
* @see SimpleInstanceIdGenerator
*/
public class HostnameInstanceIdGenerator implements InstanceIdGenerator
{
public String generateInstanceId() throws SchedulerException {
try {
return InetAddress.getLocalHost().getHostName();
}
catch (Exception e) {
throw new SchedulerException("Couldn't get host name!", e);
}
}
}