| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.qpid.example.publisher; |
| |
| import org.apache.qpid.client.BasicMessageProducer; |
| import org.slf4j.LoggerFactory; |
| import org.slf4j.Logger; |
| |
| import javax.jms.DeliveryMode; |
| import javax.jms.JMSException; |
| import javax.jms.Message; |
| import javax.jms.Session; |
| |
| /** |
| * Subclass of Publisher which uses QPID functionality to send a heartbeat message Note immediate flag not available via |
| * JMS MessageProducer |
| */ |
| public class MonitorPublisher extends Publisher |
| { |
| |
| private static final Logger _log = LoggerFactory.getLogger(Publisher.class); |
| |
| BasicMessageProducer _producer; |
| |
| public MonitorPublisher() |
| { |
| super(); |
| } |
| |
| /* |
| * Publishes a message using given details |
| */ |
| public boolean sendMessage(Session session, Message message, int deliveryMode, |
| boolean immediate, boolean commit) throws UndeliveredMessageException |
| { |
| try |
| { |
| _producer = (BasicMessageProducer) session.createProducer(_destination); |
| |
| _producer.send(message, deliveryMode, immediate); |
| |
| if (commit) |
| { |
| //commit the message send and close the transaction |
| _session.commit(); |
| } |
| |
| } |
| catch (JMSException e) |
| { |
| //Have to assume our commit failed but do not rollback here as channel closed |
| _log.error("JMSException", e); |
| e.printStackTrace(); |
| throw new UndeliveredMessageException("Cannot deliver immediate message", e); |
| } |
| |
| _log.info(_name + " finished sending message: " + message); |
| return true; |
| } |
| |
| /* |
| * Publishes a non-persistent message using transacted session |
| */ |
| public boolean sendImmediateMessage(Message message) throws UndeliveredMessageException |
| { |
| try |
| { |
| _producer = (BasicMessageProducer) _session.createProducer(_destination); |
| |
| //Send message via our producer which is not persistent and is immediate |
| //NB: not available via jms interface MessageProducer |
| _producer.send(message, DeliveryMode.NON_PERSISTENT, true); |
| |
| //commit the message send and close the transaction |
| _session.commit(); |
| |
| } |
| catch (JMSException e) |
| { |
| //Have to assume our commit failed but do not rollback here as channel closed |
| _log.error("JMSException", e); |
| e.printStackTrace(); |
| throw new UndeliveredMessageException("Cannot deliver immediate message", e); |
| } |
| |
| _log.info(_name + " finished sending message: " + message); |
| return true; |
| } |
| } |