diff options
Diffstat (limited to 'qpid/java/client/example/src/main/java/org/apache/qpid/example/pubsub')
4 files changed, 374 insertions, 0 deletions
diff --git a/qpid/java/client/example/src/main/java/org/apache/qpid/example/pubsub/Client.java b/qpid/java/client/example/src/main/java/org/apache/qpid/example/pubsub/Client.java new file mode 100644 index 0000000000..e32ee0ba73 --- /dev/null +++ b/qpid/java/client/example/src/main/java/org/apache/qpid/example/pubsub/Client.java @@ -0,0 +1,72 @@ +/* + * 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.pubsub; + +import javax.jms.Connection; +import javax.jms.Destination; +import javax.jms.JMSException; +import javax.jms.Session; +import javax.naming.NamingException; + +/** + * An abstract base class that wraps up the creation of a JMS client utilising JNDI + */ +public abstract class Client +{ + protected ConnectionSetup _setup; + + protected Connection _connection; + protected Destination _destination; + protected Session _session; + + public Client(String destination) + { + if (destination == null) + { + destination = ConnectionSetup.TOPIC_JNDI_NAME; + } + + try + { + _setup = new ConnectionSetup(); + } + catch (NamingException e) + { + //ignore + } + + if (_setup != null) + { + try + { + _connection = _setup.getConnectionFactory().createConnection(); + _destination = _setup.getDestination(destination); + } + catch (JMSException e) + { + System.err.println(e.getMessage()); + } + } + } + + public abstract void start(); + +}
\ No newline at end of file diff --git a/qpid/java/client/example/src/main/java/org/apache/qpid/example/pubsub/ConnectionSetup.java b/qpid/java/client/example/src/main/java/org/apache/qpid/example/pubsub/ConnectionSetup.java new file mode 100644 index 0000000000..88ee9ed2c5 --- /dev/null +++ b/qpid/java/client/example/src/main/java/org/apache/qpid/example/pubsub/ConnectionSetup.java @@ -0,0 +1,123 @@ +/* + * 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.pubsub; + +import javax.jms.ConnectionFactory; +import javax.jms.Destination; +import javax.naming.Context; +import javax.naming.InitialContext; +import javax.naming.NamingException; +import java.util.Properties; + +/** + * This ConnectionSetup is a wrapper around JNDI it creates a number of entries. + * + * It is equivalent to a PropertyFile of value: + * + * connectionfactory.local=amqp://guest:guest@clientid/test?brokerlist='localhost' + * connectionfactory.vm=amqp://guest:guest@clientid/test?brokerlist='vm://:1' + * + * queue.queue=example.MyQueue + * topic.topic=example.hierarical.topic + * + */ +public class ConnectionSetup +{ + final static String INITIAL_CONTEXT_FACTORY = "org.apache.qpid.jndi.PropertiesFileInitialContextFactory"; + + final static String CONNECTION_JNDI_NAME = "local"; + final static String CONNECTION_NAME = "amqp://guest:guest@clientid/test?brokerlist='localhost'"; + + public static final String QUEUE_JNDI_NAME = "queue"; + final static String QUEUE_NAME = "example.MyQueue"; + + public static final String TOPIC_JNDI_NAME = "topic"; + final static String TOPIC_NAME = "usa.news"; + + private Context _ctx; + + public ConnectionSetup() throws NamingException + { + + // Set the properties ... + Properties properties = new Properties(); + properties.put(Context.INITIAL_CONTEXT_FACTORY, INITIAL_CONTEXT_FACTORY); + properties.put("connectionfactory." + CONNECTION_JNDI_NAME, CONNECTION_NAME); + properties.put("connectionfactory." + "vm", "amqp://guest:guest@clientid/test?brokerlist='vm://:1'"); + + properties.put("queue." + QUEUE_JNDI_NAME, QUEUE_NAME); + properties.put("topic." + TOPIC_JNDI_NAME, TOPIC_NAME); + // Create the initial context + _ctx = new InitialContext(properties); + + } + + public ConnectionSetup(Properties properties) throws NamingException + { + _ctx = new InitialContext(properties); + } + + public ConnectionFactory getConnectionFactory() + { + + // Perform the lookups + try + { + return (ConnectionFactory) _ctx.lookup(CONNECTION_JNDI_NAME); + } + catch (NamingException e) + { + //ignore + } + return null; + } + + public Destination getDestination(String jndiName) + { + // Perform the lookups + try + { + return (Destination) _ctx.lookup(jndiName); + } + catch (ClassCastException cce) + { + //ignore + } + catch (NamingException ne) + { + //ignore + } + return null; + } + + + public void close() + { + try + { + _ctx.close(); + } + catch (NamingException e) + { + //ignore + } + } +} diff --git a/qpid/java/client/example/src/main/java/org/apache/qpid/example/pubsub/Publisher.java b/qpid/java/client/example/src/main/java/org/apache/qpid/example/pubsub/Publisher.java new file mode 100644 index 0000000000..ac3829d49e --- /dev/null +++ b/qpid/java/client/example/src/main/java/org/apache/qpid/example/pubsub/Publisher.java @@ -0,0 +1,81 @@ +/* + * 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.pubsub; + +import javax.jms.JMSException; +import javax.jms.MessageProducer; +import javax.jms.Session; + +/** + * A simple Publisher example. + * + * The class can take two arguments. + * java Publisher <destination> <msgCount> + * Where: + * destination is either 'topic' or 'queue' (Default: topic) + * msgCount is the number of messages to send (Default : 100) + * + */ +public class Publisher extends Client +{ + int _msgCount; + + public Publisher(String destination, int msgCount) + { + super(destination); + _msgCount = msgCount; + } + + public void start() + { + try + { + _session = _connection.createSession(false, Session.AUTO_ACKNOWLEDGE); + + MessageProducer _producer = _session.createProducer(_destination); + + for (int msgCount = 0; msgCount < _msgCount; msgCount++) + { + _producer.send(_session.createTextMessage("msg:" + msgCount)); + System.out.println("Sent:" + msgCount); + } + + System.out.println("Done."); + _connection.close(); + } + catch (JMSException e) + { + e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates. + } + } + + + public static void main(String[] args) + { + + String destination = args.length > 2 ? args[1] : "usa.news"; + + int msgCount = args.length > 2 ? Integer.parseInt(args[2]) : 100; + + new Publisher(destination, msgCount).start(); + } + +} diff --git a/qpid/java/client/example/src/main/java/org/apache/qpid/example/pubsub/Subscriber.java b/qpid/java/client/example/src/main/java/org/apache/qpid/example/pubsub/Subscriber.java new file mode 100644 index 0000000000..f2d736701f --- /dev/null +++ b/qpid/java/client/example/src/main/java/org/apache/qpid/example/pubsub/Subscriber.java @@ -0,0 +1,98 @@ +/* + * 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.pubsub; + +import javax.jms.JMSException; +import javax.jms.Message; +import javax.jms.MessageListener; +import javax.jms.Session; +import javax.jms.TextMessage; +import javax.jms.Topic; +import java.util.concurrent.CountDownLatch; + + +/** + * Simple client that listens for the specified number of msgs on the given Destinaton + * + * The class can take two arguments. + * java Subscriber <destination> <msgCount> + * Where: + * destination is either 'topic' or 'queue' (Default: topic) + * msgCount is the number of messages to send (Default : 100) + */ +public class Subscriber extends Client implements MessageListener +{ + + CountDownLatch _count; + + public Subscriber(String destination, int msgCount) + { + super(destination); + _count = new CountDownLatch(msgCount); + } + + + public void start() + { + try + { + _session = _connection.createSession(false, Session.AUTO_ACKNOWLEDGE); + + _session.createDurableSubscriber((Topic) _setup.getDestination(ConnectionSetup.TOPIC_JNDI_NAME), + "exampleClient").setMessageListener(this); + _connection.start(); + _count.await(); + + System.out.println("Done"); + + _connection.close(); + } + catch (JMSException e) + { + e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates. + } + catch (InterruptedException e) + { + e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates. + } + } + + public static void main(String[] args) + { + String destination = args.length > 2 ? args[1] : null; + int msgCount = args.length > 2 ? Integer.parseInt(args[2]) : 100; + + new Subscriber(destination, msgCount).start(); + } + + public void onMessage(Message message) + { + try + { + _count.countDown(); + System.out.println("Received msg:" + ((TextMessage) message).getText()); + } + catch (JMSException e) + { + e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates. + } + } +} |