Example usage for javax.jms Connection close

List of usage examples for javax.jms Connection close

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Introduction

In this page you can find the example usage for javax.jms Connection close.

Prototype


void close() throws JMSException;

Source Link

Document

Closes the connection.

Usage

From source file:com.fusesource.examples.activemq.DurableSubscriber.java

public static void main(String args[]) {
    Connection connection = null;

    try {/*from  w  w w  .  j  av a 2s.c o  m*/
        // JNDI lookup of JMS Connection Factory and JMS Destination
        Context context = new InitialContext();
        ConnectionFactory factory = (ConnectionFactory) context.lookup(CONNECTION_FACTORY_NAME);
        connection = factory.createConnection();
        connection.setClientID(System.getProperty("clientID"));
        connection.start();

        Session session = connection.createSession(NON_TRANSACTED, Session.CLIENT_ACKNOWLEDGE);
        String topicName = System.getProperty("topic");

        Topic topic = session.createTopic(topicName);
        MessageConsumer consumer = session.createDurableSubscriber(topic, "Test_Durable_Subscriber");

        LOG.info("Start consuming messages from " + topicName + " with " + MESSAGE_TIMEOUT_MILLISECONDS
                + "ms timeout");

        // Synchronous message consumer
        int i = 1;
        while (true) {
            Message message = consumer.receive(MESSAGE_TIMEOUT_MILLISECONDS);
            if (message != null) {
                if (message instanceof TextMessage) {
                    String text = ((TextMessage) message).getText();
                    LOG.info("Got " + (i++) + ". message: " + text);
                }
            } else {
                break;
            }
        }

        consumer.close();
        session.close();
    } catch (Throwable t) {
        LOG.error(t);
    } finally {
        // Cleanup code
        // In general, you should always close producers, consumers,
        // sessions, and connections in reverse order of creation.
        // For this simple example, a JMS connection.close will
        // clean up all other resources.
        if (connection != null) {
            try {
                connection.close();
            } catch (JMSException e) {
                LOG.error(e);
            }
        }
    }
}

From source file:org.apache.activemq.demo.SimpleConsumer.java

/**
 * @param args the queue used by the example
 *///from   ww w  .  j a  v a  2 s .com
public static void main(String[] args) {
    String destinationName = null;
    Context jndiContext = null;
    ConnectionFactory connectionFactory = null;
    Connection connection = null;
    Session session = null;
    Destination destination = null;
    MessageConsumer consumer = null;

    /*
     * Read destination name from command line and display it.
     */
    if (args.length != 1) {
        LOG.info("Usage: java SimpleConsumer <destination-name>");
        System.exit(1);
    }
    destinationName = args[0];
    LOG.info("Destination name is " + destinationName);

    /*
     * Create a JNDI API InitialContext object
     */
    try {
        jndiContext = new InitialContext();
    } catch (NamingException e) {
        LOG.info("Could not create JNDI API " + "context: " + e.toString());
        System.exit(1);
    }

    /*
     * Look up connection factory and destination.
     */
    try {
        connectionFactory = (ConnectionFactory) jndiContext.lookup("ConnectionFactory");
        destination = (Destination) jndiContext.lookup(destinationName);
    } catch (NamingException e) {
        LOG.info("JNDI API lookup failed: " + e.toString());
        System.exit(1);
    }

    /*
     * Create connection. Create session from connection; false means
     * session is not transacted. Create receiver, then start message
     * delivery. Receive all text messages from destination until a non-text
     * message is received indicating end of message stream. Close
     * connection.
     */
    try {
        connection = connectionFactory.createConnection();
        session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        consumer = session.createConsumer(destination);
        connection.start();
        while (true) {
            Message m = consumer.receive(1);
            if (m != null) {
                if (m instanceof TextMessage) {
                    TextMessage message = (TextMessage) m;
                    LOG.info("Reading message: " + message.getText());
                } else {
                    break;
                }
            }
        }
    } catch (JMSException e) {
        LOG.info("Exception occurred: " + e);
    } finally {
        if (connection != null) {
            try {
                connection.close();
            } catch (JMSException e) {
            }
        }
    }
}

From source file:io.datalayer.activemq.consumer.SimpleConsumer.java

/**
 * @param args the queue used by the example
 *///from w  w w. j  a v a2s . c  o  m
public static void main(String... args) {
    String destinationName = null;
    Context jndiContext = null;
    ConnectionFactory connectionFactory = null;
    Connection connection = null;
    Session session = null;
    Destination destination = null;
    MessageConsumer consumer = null;

    /*
     * Read destination name from command line and display it.
     */
    if (args.length != 1) {
        LOG.info("Usage: java SimpleConsumer <destination-name>");
        System.exit(1);
    }
    destinationName = args[0];
    LOG.info("Destination name is " + destinationName);

    /*
     * Create a JNDI API InitialContext object
     */
    try {
        jndiContext = new InitialContext();
    } catch (NamingException e) {
        LOG.info("Could not create JNDI API " + "context: " + e.toString());
        System.exit(1);
    }

    /*
     * Look up connection factory and destination.
     */
    try {
        connectionFactory = (ConnectionFactory) jndiContext.lookup("ConnectionFactory");
        destination = (Destination) jndiContext.lookup(destinationName);
    } catch (NamingException e) {
        LOG.info("JNDI API lookup failed: " + e.toString());
        System.exit(1);
    }

    /*
     * Create connection. Create session from connection; false means
     * session is not transacted. Create receiver, then start message
     * delivery. Receive all text messages from destination until a non-text
     * message is received indicating end of message stream. Close
     * connection.
     */
    try {
        connection = connectionFactory.createConnection();
        session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        consumer = session.createConsumer(destination);
        connection.start();
        while (true) {
            Message m = consumer.receive(1);
            if (m != null) {
                if (m instanceof TextMessage) {
                    TextMessage message = (TextMessage) m;
                    LOG.info("Reading message: " + message.getText());
                } else {
                    break;
                }
            }
        }
    } catch (JMSException e) {
        LOG.info("Exception occurred: " + e);
    } finally {
        if (connection != null) {
            try {
                connection.close();
            } catch (JMSException e) {
            }
        }
    }
}

From source file:io.datalayer.activemq.producer.SimpleProducer.java

/**
 * @param args the destination name to send to and optionally, the number of
 *                messages to send/*  w w w .ja v  a 2 s.  c  o m*/
 */
public static void main(String... args) {
    Context jndiContext = null;
    ConnectionFactory connectionFactory = null;
    Connection connection = null;
    Session session = null;
    Destination destination = null;
    MessageProducer producer = null;
    String destinationName = null;
    final int numMsgs;

    if ((args.length < 1) || (args.length > 2)) {
        LOG.info("Usage: java SimpleProducer <destination-name> [<number-of-messages>]");
        System.exit(1);
    }
    destinationName = args[0];
    LOG.info("Destination name is " + destinationName);
    if (args.length == 2) {
        numMsgs = (new Integer(args[1])).intValue();
    } else {
        numMsgs = 1;
    }

    /*
     * Create a JNDI API InitialContext object
     */
    try {
        jndiContext = new InitialContext();
    } catch (NamingException e) {
        LOG.info("Could not create JNDI API context: " + e.toString());
        System.exit(1);
    }

    /*
     * Look up connection factory and destination.
     */
    try {
        connectionFactory = (ConnectionFactory) jndiContext.lookup("ConnectionFactory");
        destination = (Destination) jndiContext.lookup(destinationName);
    } catch (NamingException e) {
        LOG.info("JNDI API lookup failed: " + e);
        System.exit(1);
    }

    /*
     * Create connection. Create session from connection; false means
     * session is not transacted. Create sender and text message. Send
     * messages, varying text slightly. Send end-of-messages message.
     * Finally, close connection.
     */
    try {
        connection = connectionFactory.createConnection();
        session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        producer = session.createProducer(destination);
        TextMessage message = session.createTextMessage();
        for (int i = 0; i < numMsgs; i++) {
            message.setText("This is message " + (i + 1));
            LOG.info("Sending message: " + message.getText());
            producer.send(message);
        }

        /*
         * Send a non-text control message indicating end of messages.
         */
        producer.send(session.createMessage());
    } catch (JMSException e) {
        LOG.info("Exception occurred: " + e);
    } finally {
        if (connection != null) {
            try {
                connection.close();
            } catch (JMSException e) {
            }
        }
    }
}

From source file:example.wildcard.Client.java

public static void main(String[] args) {
    String url = BROKER_URL;
    if (args.length > 0) {
        url = args[0].trim();/*from w  w  w. j  a v a 2 s .  com*/
    }
    ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory("admin", "password", url);
    Connection connection = null;

    try {
        Topic senderTopic = new ActiveMQTopic(System.getProperty("topicName"));

        connection = connectionFactory.createConnection("admin", "password");

        Session senderSession = connection.createSession(NON_TRANSACTED, Session.AUTO_ACKNOWLEDGE);
        MessageProducer sender = senderSession.createProducer(senderTopic);

        Session receiverSession = connection.createSession(NON_TRANSACTED, Session.AUTO_ACKNOWLEDGE);

        String policyType = System.getProperty("wildcard", ".*");
        String receiverTopicName = senderTopic.getTopicName() + policyType;
        Topic receiverTopic = receiverSession.createTopic(receiverTopicName);

        MessageConsumer receiver = receiverSession.createConsumer(receiverTopic);
        receiver.setMessageListener(new MessageListener() {
            public void onMessage(Message message) {
                try {
                    if (message instanceof TextMessage) {
                        String text = ((TextMessage) message).getText();
                        System.out.println("We received a new message: " + text);
                    }
                } catch (JMSException e) {
                    System.out.println("Could not read the receiver's topic because of a JMSException");
                }
            }
        });

        connection.start();
        System.out.println("Listening on '" + receiverTopicName + "'");
        System.out.println("Enter a message to send: ");

        Scanner inputReader = new Scanner(System.in);

        while (true) {
            String line = inputReader.nextLine();
            if (line == null) {
                System.out.println("Done!");
                break;
            } else if (line.length() > 0) {
                try {
                    TextMessage message = senderSession.createTextMessage();
                    message.setText(line);
                    System.out.println("Sending a message: " + message.getText());
                    sender.send(message);
                } catch (JMSException e) {
                    System.out.println("Exception during publishing a message: ");
                }
            }
        }

        receiver.close();
        receiverSession.close();
        sender.close();
        senderSession.close();

    } catch (Exception e) {
        System.out.println("Caught exception!");
    } finally {
        if (connection != null) {
            try {
                connection.close();
            } catch (JMSException e) {
                System.out.println("When trying to close connection: ");
            }
        }
    }

}

From source file:example.composite.dest.Consumer.java

public static void main(String[] args) {
    String url = BROKER_URL;
    if (args.length > 0) {
        url = args[0].trim();//from w  w  w .  ja  v a  2  s .c o m
    }
    System.out.println("\nWaiting to receive messages... will timeout after " + TIMEOUT / 1000 + "s");
    ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory("admin", "password", url);
    Connection connection = null;

    try {

        connection = connectionFactory.createConnection();
        connection.start();

        Session session = connection.createSession(NON_TRANSACTED, Session.AUTO_ACKNOWLEDGE);
        Destination destination = session.createQueue("test-queue");
        Destination destinationFoo = session.createQueue("test-queue-foo");
        Destination destinationBar = session.createQueue("test-queue-bar");
        Destination destinationTopicFoo = session.createTopic("test-topic-foo");

        MessageConsumer consumer = session.createConsumer(destination);
        MessageConsumer consumerFoo = session.createConsumer(destinationFoo);
        MessageConsumer consumerBar = session.createConsumer(destinationBar);
        MessageConsumer consumerTopicFoo = session.createConsumer(destinationTopicFoo);

        int i = 0;
        while (true) {
            Message message = consumer.receive(TIMEOUT);

            if (message != null) {
                if (message instanceof TextMessage) {
                    String text = ((TextMessage) message).getText();
                    System.out.println("Got " + i++ + ". message on test-queue: " + text);
                }
            } else {
                break;
            }

            message = consumerFoo.receive(TIMEOUT);

            if (message != null) {
                if (message instanceof TextMessage) {
                    String text = ((TextMessage) message).getText();
                    System.out.println("Got " + i++ + ". message on test-queue-foo: " + text);
                }
            } else {
                break;
            }

            message = consumerBar.receive(TIMEOUT);

            if (message != null) {
                if (message instanceof TextMessage) {
                    String text = ((TextMessage) message).getText();
                    System.out.println("Got " + i++ + ". message on test-queue-bar: " + text);
                }
            } else {
                break;
            }

            message = consumerTopicFoo.receive(TIMEOUT);

            if (message != null) {
                if (message instanceof TextMessage) {
                    String text = ((TextMessage) message).getText();
                    System.out.println("Got " + i++ + ". message on test-topic-bar: " + text);
                }
            } else {
                break;
            }

        }

        consumer.close();
        session.close();

    } catch (Exception e) {
        System.out.println("Caught exception!");
    } finally {
        if (connection != null) {
            try {
                connection.close();
            } catch (JMSException e) {
                System.out.println("Could not close an open connection...");
            }
        }
    }
}

From source file:org.jboss.activemq.clients.JMSConsumer.java

public static void main(String args[]) {
    Connection connection = null;

    try {//w  w  w  . j av  a2  s  .c o m

        Options options = new Options();
        options.addOption("h", "help", false, "help:");
        options.addOption("url", true, "url for the broker to connect to");
        options.addOption("u", "username", true, "User name for connection");
        options.addOption("p", "password", true, "password for connection");
        options.addOption("d", "destination", true, "destination to send to");
        options.addOption("n", "number", true, "number of messages to send");
        options.addOption("delay", true, "delay between each send");

        CommandLineParser parser = new BasicParser();
        CommandLine commandLine = parser.parse(options, args);

        if (commandLine.hasOption("h")) {
            HelpFormatter helpFormatter = new HelpFormatter();
            helpFormatter.printHelp("OptionsTip", options);
            System.exit(0);
        }

        String url = commandLine.hasOption("host") ? commandLine.getOptionValue("host") : URL;

        String userName = commandLine.hasOption("u") ? commandLine.getOptionValue("u") : "admin";
        String password = commandLine.hasOption("p") ? commandLine.getOptionValue("p") : "admin";
        String destinationName = commandLine.hasOption("d") ? commandLine.getOptionValue("d")
                : DESTINATION_NAME;
        int numberOfMessages = commandLine.hasOption("n") ? Integer.parseInt(commandLine.getOptionValue("n"))
                : NUM_MESSAGES_TO_RECEIVE;
        ;

        ConnectionFactory factory = new ActiveMQConnectionFactory(userName, password, url);

        connection = factory.createConnection();
        connection.start();
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        Topic topic = session.createTopic(destinationName);

        MessageConsumer consumer = session.createConsumer(topic);

        LOG.info("Start consuming " + numberOfMessages + " messages from " + topic.toString());

        for (int i = 0; i < numberOfMessages; i++) {
            Message message = consumer.receive();
            if (message != null) {
                if (message instanceof BytesMessage) {
                    BytesMessage bytesMessage = (BytesMessage) message;
                    int len = (int) bytesMessage.getBodyLength();
                    byte[] data = new byte[len];
                    bytesMessage.readBytes(data);
                    String value = new String(data);

                    LOG.info("Got " + value);
                } else {
                    LOG.info("Got a message " + message);
                }
            }
        }

        consumer.close();
        session.close();
    } catch (Throwable t) {
        LOG.error("Error receiving message", t);
    } finally {

        if (connection != null) {
            try {
                connection.close();
            } catch (JMSException e) {
                LOG.error("Error closing connection", e);
            }
        }
    }
}

From source file:org.dawnsci.commandserver.core.util.JSONUtils.java

public static final void sendTopic(Object message, String topicName, URI uri) throws Exception {

    Connection connection = null;
    try {/*w ww .j  a v a2s .  c  o  m*/
        ConnectionFactory connectionFactory = ConnectionFactoryFacade.createConnectionFactory(uri);
        connection = connectionFactory.createConnection();
        connection.start();

        sendTopic(connection, message, topicName, uri);

    } finally {
        if (connection != null)
            connection.close();
    }
}

From source file:org.springframework.jms.support.JmsUtils.java

/**
 * Close the given JMS Connection and ignore any thrown exception.
 * This is useful for typical {@code finally} blocks in manual JMS code.
 * @param con the JMS Connection to close (may be {@code null})
 * @param stop whether to call {@code stop()} before closing
 *//*from  w w w  . j a  v  a2s . c o  m*/
public static void closeConnection(@Nullable Connection con, boolean stop) {
    if (con != null) {
        try {
            if (stop) {
                try {
                    con.stop();
                } finally {
                    con.close();
                }
            } else {
                con.close();
            }
        } catch (javax.jms.IllegalStateException ex) {
            logger.debug("Ignoring Connection state exception - assuming already closed: " + ex);
        } catch (JMSException ex) {
            logger.debug("Could not close JMS Connection", ex);
        } catch (Throwable ex) {
            // We don't trust the JMS provider: It might throw RuntimeException or Error.
            logger.debug("Unexpected exception on closing JMS Connection", ex);
        }
    }
}

From source file:org.nebulaframework.grid.Grid.java

/**
 * Checks the given Service URL to see if the
 * Broker is running./*from   ww w.j av a  2s .c  om*/
 * 
 * @param url connection url
 */
private static void checkJMSBroker(String url) {
    try {

        log.debug("Attempting to establish connection with Cluster " + url);

        ActiveMQConnectionFactory cf = new ActiveMQConnectionFactory(url);
        Connection testConnection = cf.createConnection();
        testConnection.start();
        testConnection.close();

        log.debug("Connection established");

    } catch (Exception e) {
        log.warn("Unable to establish cluster connection");
        throw new DiscoveryFailureException("Unable to connect to Cluster", e);
    }
}