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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.test.framework;
import static org.apache.qpid.test.framework.MessagingTestConfigProperties.*;
import uk.co.thebadgerset.junit.extensions.util.ParsedProperties;
import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.JMSException;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
/**
* TestUtils provides static helper methods that are usefull for writing tests against QPid.
*
* <p/><table id="crc"><caption>CRC Card</caption>
* <tr><th> Responsibilities <th> Collaborations
* <tr><td> Create connections from test properties. <td> {@link MessagingTestConfigProperties}
* <tr><td> Inject a short pause in a test.
* </table>
*/
public class TestUtils
{
/**
* Establishes a JMS connection using a properties file and qpids built in JNDI implementation. This is a simple
* convenience method for code that does anticipate handling connection failures. All exceptions that indicate
* that the connection has failed, are wrapped as rutime exceptions, preumably handled by a top level failure
* handler.
*
* @param messagingProps Connection properties as defined in {@link MessagingTestConfigProperties}.
*
* @return A JMS conneciton.
*/
public static Connection createConnection(ParsedProperties messagingProps)
{
try
{
// Extract the configured connection properties from the test configuration.
String conUsername = messagingProps.getProperty(USERNAME_PROPNAME);
String conPassword = messagingProps.getProperty(PASSWORD_PROPNAME);
String virtualHost = messagingProps.getProperty(VIRTUAL_HOST_PROPNAME);
String brokerUrl = messagingProps.getProperty(BROKER_PROPNAME);
// Set up the broker connection url.
String connectionString =
"amqp://" + conUsername + ":" + conPassword + "/" + ((virtualHost != null) ? virtualHost : "")
+ "?brokerlist='" + brokerUrl + "'";
// messagingProps.setProperty(CONNECTION_PROPNAME, connectionString);
Context ctx = new InitialContext(messagingProps);
ConnectionFactory cf = (ConnectionFactory) ctx.lookup(CONNECTION_NAME);
Connection connection = cf.createConnection();
return connection;
}
catch (NamingException e)
{
throw new RuntimeException("Got JNDI NamingException whilst looking up the connection factory.", e);
}
catch (JMSException e)
{
throw new RuntimeException("Could not establish connection due to JMSException.", e);
}
}
/**
* Pauses for the specified length of time. In the event of failing to pause for at least that length of time
* due to interuption of the thread, a RutimeException is raised to indicate the failure. The interupted status
* of the thread is restores in that case. This method should only be used when it is expected that the pause
* will be succesfull, for example in test code that relies on inejecting a pause.
*
* @param t The minimum time to pause for in milliseconds.
*/
public static void pause(long t)
{
try
{
Thread.sleep(t);
}
catch (InterruptedException e)
{
// Restore the interrupted status
Thread.currentThread().interrupt();
throw new RuntimeException("Failed to generate the requested pause length.", e);
}
}
}
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