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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 org.apache.log4j.Logger;
+
+import static org.apache.qpid.test.framework.MessagingTestConfigProperties.*;
+
+import org.apache.qpid.junit.extensions.util.ParsedProperties;
+
+import javax.jms.*;
+import javax.naming.Context;
+import javax.naming.InitialContext;
+import javax.naming.NamingException;
+
+import java.util.Map;
+
+/**
+ * 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> Create test messages.
+ * <tr><td> Inject a short pause in a test.
+ * <tr><td> Serialize properties into a message.
+ * </table>
+ */
+public class TestUtils
+{
+ /** Used for debugging. */
+ private static Logger log = Logger.getLogger(TestUtils.class);
+
+ /** Some dummy data to stuff all test messages with. */
+ private static final byte[] MESSAGE_DATA_BYTES =
+ "Test Message -- Test Message -- Test Message -- Test Message -- Test Message -- Test Message -- Test Message -- "
+ .getBytes();
+
+ /**
+ * Establishes a JMS connection using a set of properties and qpids built in JNDI implementation. This is a simple
+ * convenience method for code that does not anticipate handling connection failures. All exceptions that indicate
+ * that the connection has failed, are wrapped as rutime exceptions, presumably handled by a top level failure
+ * handler.
+ *
+ * <p/>This utility makes use of the following test parameters from {@link MessagingTestConfigProperties} to control
+ * the connection creation:
+ *
+ * <p/><table>
+ * <tr><td> {@link MessagingTestConfigProperties#USERNAME_PROPNAME} <td> The username.
+ * <tr><td> {@link MessagingTestConfigProperties#PASSWORD_PROPNAME} <td> The password.
+ * <tr><td> {@link MessagingTestConfigProperties#VIRTUAL_HOST_PROPNAME} <td> The virtual host name.
+ * <tr><td> {@link MessagingTestConfigProperties#BROKER_PROPNAME} <td> The broker URL.
+ * <tr><td> {@link MessagingTestConfigProperties#CONNECTION_NAME} <td> The broker name in the initial context.
+ *
+ * @param messagingProps Connection properties as defined in {@link MessagingTestConfigProperties}.
+ *
+ * @return A JMS conneciton.
+ */
+ public static Connection createConnection(ParsedProperties messagingProps)
+ {
+ log.debug("public static Connection createConnection(ParsedProperties messagingProps = " + messagingProps
+ + "): called");
+
+ 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);
+
+ // Create the broker connection url.
+ String connectionString =
+ "amqp://" + conUsername + ":" + conPassword + "@clientid/" + ((virtualHost != null) ? virtualHost : "")
+ + "?brokerlist='" + brokerUrl + "'";
+
+ // Create properties to create the initial context from, and inject the connection factory configuration
+ // for the defined connection name into it.
+ messagingProps.setProperty("connectionfactory." + CONNECTION_NAME, connectionString);
+
+ Context ctx = new InitialContext(messagingProps);
+
+ ConnectionFactory cf = (ConnectionFactory) ctx.lookup(CONNECTION_NAME);
+
+ return cf.createConnection();
+ }
+ 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);
+ }
+ }
+
+ /**
+ * Creates a test message of the specified size, on the given JMS session.
+ *
+ * @param session The JMS session.
+ * @param size The size of the message in bytes.
+ *
+ * @return A bytes message, of the specified size, filled with dummy data.
+ *
+ * @throws JMSException Any underlying JMSExceptions are allowed to fall through.
+ */
+ public static Message createTestMessageOfSize(Session session, int size) throws JMSException
+ {
+ BytesMessage message = session.createBytesMessage();
+
+ if (size > 0)
+ {
+ int div = size / MESSAGE_DATA_BYTES.length;
+ int mod = size % MESSAGE_DATA_BYTES.length;
+
+ for (int i = 0; i < div; i++)
+ {
+ message.writeBytes(MESSAGE_DATA_BYTES);
+ }
+
+ if (mod != 0)
+ {
+ message.writeBytes(MESSAGE_DATA_BYTES, 0, mod);
+ }
+ }
+
+ return message;
+ }
+
+ /**
+ * 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);
+ }
+ }
+
+ /**
+ * Sets properties of different types on a JMS Message.
+ *
+ * @param message The message to set properties on.
+ * @param properties The property name/value pairs to set.
+ *
+ * @throws javax.jms.JMSException All underlying JMSExceptions are allowed to fall through.
+ *
+ * @todo Move this helper method somewhere else. For example, TestUtils.
+ */
+ public static void setPropertiesOnMessage(Message message, Map<Object, Object> properties) throws JMSException
+ {
+ for (Map.Entry<Object, Object> entry : properties.entrySet())
+ {
+ String name = entry.getKey().toString();
+ Object value = entry.getValue();
+
+ message.setObjectProperty(name, value);
+ }
+ }
+}
+