/*
* #%L
* Talend :: ESB :: Job :: Controller
* %%
* Copyright (C) 2011 - 2012 Talend 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.
* #L%
*/
package org.talend.esb.job.controller.internal;
import java.util.concurrent.ExecutorService;
import java.util.logging.Logger;
import org.talend.esb.job.controller.internal.MessageExchangeBuffer.WorkloadListener;
import routines.system.api.ESBEndpointRegistry;
import routines.system.api.TalendESBJob;
import routines.system.api.TalendESBJobFactory;
public class MultiInstanceWorkloadStrategy implements WorkloadListener {
public static final Logger LOG = Logger.getLogger(MultiInstanceWorkloadStrategy.class.getName());
private final TalendESBJobFactory factory;
private final String name;
private String[] args;
private final ESBEndpointRegistry registry;
private final ExecutorService execService;
private int instances;
public MultiInstanceWorkloadStrategy(
TalendESBJobFactory jobFactory,
String jobName,
String[] arguments,
ESBEndpointRegistry endpointRegistry,
ExecutorService executorService) {
factory = jobFactory;
name = jobName;
args = arguments;
registry = endpointRegistry;
execService = executorService;
}
@Override
public void initialValues(MessageExchangeBuffer buffer, int idleConsumers, int waitingRequests) {
registerNewJobinstance(buffer);
}
@Override
public void valuesChanged(MessageExchangeBuffer buffer, int idleConsumers, int waitingRequests) {
if (idleConsumers == 0) {
registerNewJobinstance(buffer);
}
}
private void registerNewJobinstance(MessageExchangeBuffer buffer) {
TalendESBJob job = factory.newTalendESBJob();
job.setEndpointRegistry(registry);
RuntimeESBProviderCallback callback = new RuntimeESBProviderCallback(buffer, job, name, args);
job.setProviderCallback(callback);
execService.execute(callback);
instances++;
LOG.info("Created instance " + instances + " of job " + name + ".");
}
}