/*
* Copyright 2013 Red Hat, Inc. and/or its affiliates.
*
* 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.jbpm.executor.impl.jms;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.TextMessage;
import org.jbpm.executor.entities.RequestInfo;
import org.jbpm.executor.impl.AbstractAvailableJobsExecutor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class JmsAvailableJobsExecutor extends AbstractAvailableJobsExecutor implements MessageListener {
private static final Logger logger = LoggerFactory.getLogger(JmsAvailableJobsExecutor.class);
@Override
public void onMessage(Message message) {
if (message instanceof TextMessage) {
Long requestId = null;
TextMessage textMessage = (TextMessage) message;
try {
String messageContent = textMessage.getText();
logger.debug("received Text message with content {}", messageContent);
requestId = Long.parseLong(messageContent);
// message content is request id
RequestInfo request = (RequestInfo) queryService.getRequestForProcessing(requestId);
logger.debug("Found following job request for id {} : {}", requestId, request);
if (request != null) {
logger.debug("Request with id {} is in valid state, processing...", requestId);
executeGivenJob(request);
}
} catch (JMSException e) {
logger.error("JMS Error when processing job with id {} due to {}", requestId, e.getMessage(), e);
throw new RuntimeException("Exception when receiving executor job request", e);
} catch (Throwable e) {
logger.error("Error when processing job with id {} due to {} will ack JMS message and let exeuctor retry it", requestId, e.getMessage(), e);
}
}
}
}