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/*
*
* 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.systest.disttest.clientonly;
import java.util.Map;
import javax.jms.Connection;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.Session;
import javax.naming.Context;
import junit.framework.Assert;
import org.apache.qpid.disttest.DistributedTestConstants;
import org.apache.qpid.disttest.jms.JmsMessageAdaptor;
import org.apache.qpid.disttest.message.Command;
import org.apache.qpid.disttest.message.CommandType;
/**
* Helper for unit tests to simplify access to the Controller Queue.
*
* Implicitly creates the queue, so you must create a {@link ControllerQueue} object before
* trying to use the underlying queue.
*/
public class ControllerQueue
{
private MessageConsumer _controllerQueueMessageConsumer;
private Session _controllerQueueSession;
/**
* Implicitly creates the queue, so you must create a {@link ControllerQueue} object before
* trying to use the underlying queue.
*
* @param context used for looking up the controller queue {@link Destination}
*/
public ControllerQueue(Connection connection, Context context) throws Exception
{
_controllerQueueSession = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
Destination controllerQueue = (Destination) context.lookup(DistributedTestConstants.CONTROLLER_QUEUE_JNDI_NAME);
_controllerQueueMessageConsumer = _controllerQueueSession.createConsumer(controllerQueue);
}
public <T extends Command> T getNext(long timeout) throws JMSException
{
final Message message = _controllerQueueMessageConsumer.receive(timeout);
if(message == null)
{
return null;
}
return (T) JmsMessageAdaptor.messageToCommand(message);
}
public void addNextResponse(Map<CommandType, Command> responses) throws JMSException
{
Command nextResponse = getNext();
responses.put(nextResponse.getType(), nextResponse);
}
@SuppressWarnings("unchecked")
public <T extends Command> T getNext() throws JMSException
{
return (T)getNext(true);
}
public <T extends Command> T getNext(boolean assertMessageExists) throws JMSException
{
final Message message = _controllerQueueMessageConsumer.receive(2000);
if(assertMessageExists)
{
Assert.assertNotNull("No message received from control queue", message);
}
if(message == null)
{
return null;
}
T command = (T) JmsMessageAdaptor.messageToCommand(message);
return command;
}
public void close() throws Exception
{
_controllerQueueMessageConsumer.close();
_controllerQueueSession.close();
}
}
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