Example usage for com.rabbitmq.client Connection createChannel

List of usage examples for com.rabbitmq.client Connection createChannel

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Introduction

In this page you can find the example usage for com.rabbitmq.client Connection createChannel.

Prototype

Channel createChannel() throws IOException;

Source Link

Document

Create a new channel, using an internally allocated channel number.

Usage

From source file:io.druid.examples.rabbitmq.RabbitMQProducerMain.java

License:Apache License

public static void main(String[] args) throws Exception {
    // We use a List to keep track of option insertion order. See below.
    final List<Option> optionList = new ArrayList<Option>();

    optionList.add(OptionBuilder.withLongOpt("help").withDescription("display this help message").create("h"));
    optionList.add(OptionBuilder.withLongOpt("hostname").hasArg()
            .withDescription("the hostname of the AMQP broker [defaults to AMQP library default]").create("b"));
    optionList.add(OptionBuilder.withLongOpt("port").hasArg()
            .withDescription("the port of the AMQP broker [defaults to AMQP library default]").create("n"));
    optionList.add(OptionBuilder.withLongOpt("username").hasArg()
            .withDescription("username to connect to the AMQP broker [defaults to AMQP library default]")
            .create("u"));
    optionList.add(OptionBuilder.withLongOpt("password").hasArg()
            .withDescription("password to connect to the AMQP broker [defaults to AMQP library default]")
            .create("p"));
    optionList.add(OptionBuilder.withLongOpt("vhost").hasArg()
            .withDescription("name of virtual host on the AMQP broker [defaults to AMQP library default]")
            .create("v"));
    optionList.add(OptionBuilder.withLongOpt("exchange").isRequired().hasArg()
            .withDescription("name of the AMQP exchange [required - no default]").create("e"));
    optionList.add(OptionBuilder.withLongOpt("key").hasArg()
            .withDescription("the routing key to use when sending messages [default: 'default.routing.key']")
            .create("k"));
    optionList.add(OptionBuilder.withLongOpt("type").hasArg()
            .withDescription("the type of exchange to create [default: 'topic']").create("t"));
    optionList.add(OptionBuilder.withLongOpt("durable")
            .withDescription("if set, a durable exchange will be declared [default: not set]").create("d"));
    optionList.add(OptionBuilder.withLongOpt("autodelete")
            .withDescription("if set, an auto-delete exchange will be declared [default: not set]")
            .create("a"));
    optionList.add(OptionBuilder.withLongOpt("single")
            .withDescription("if set, only a single message will be sent [default: not set]").create("s"));
    optionList.add(OptionBuilder.withLongOpt("start").hasArg()
            .withDescription("time to use to start sending messages from [default: 2010-01-01T00:00:00]")
            .create());//from ww  w.  ja v a  2  s.  co m
    optionList.add(OptionBuilder.withLongOpt("stop").hasArg().withDescription(
            "time to use to send messages until (format: '2013-07-18T23:45:59') [default: current time]")
            .create());
    optionList.add(OptionBuilder.withLongOpt("interval").hasArg()
            .withDescription("the interval to add to the timestamp between messages in seconds [default: 10]")
            .create());
    optionList.add(OptionBuilder.withLongOpt("delay").hasArg()
            .withDescription("the delay between sending messages in milliseconds [default: 100]").create());

    // An extremely silly hack to maintain the above order in the help formatting.
    HelpFormatter formatter = new HelpFormatter();
    // Add a comparator to the HelpFormatter using the ArrayList above to sort by insertion order.
    formatter.setOptionComparator(new Comparator() {
        @Override
        public int compare(Object o1, Object o2) {
            // I know this isn't fast, but who cares! The list is short.
            return optionList.indexOf(o1) - optionList.indexOf(o2);
        }
    });

    // Now we can add all the options to an Options instance. This is dumb!
    Options options = new Options();
    for (Option option : optionList) {
        options.addOption(option);
    }

    CommandLine cmd = null;

    try {
        cmd = new BasicParser().parse(options, args);

    } catch (ParseException e) {
        formatter.printHelp("RabbitMQProducerMain", e.getMessage(), options, null);
        System.exit(1);
    }

    if (cmd.hasOption("h")) {
        formatter.printHelp("RabbitMQProducerMain", options);
        System.exit(2);
    }

    ConnectionFactory factory = new ConnectionFactory();

    if (cmd.hasOption("b")) {
        factory.setHost(cmd.getOptionValue("b"));
    }
    if (cmd.hasOption("u")) {
        factory.setUsername(cmd.getOptionValue("u"));
    }
    if (cmd.hasOption("p")) {
        factory.setPassword(cmd.getOptionValue("p"));
    }
    if (cmd.hasOption("v")) {
        factory.setVirtualHost(cmd.getOptionValue("v"));
    }
    if (cmd.hasOption("n")) {
        factory.setPort(Integer.parseInt(cmd.getOptionValue("n")));
    }

    String exchange = cmd.getOptionValue("e");
    String routingKey = "default.routing.key";
    if (cmd.hasOption("k")) {
        routingKey = cmd.getOptionValue("k");
    }

    boolean durable = cmd.hasOption("d");
    boolean autoDelete = cmd.hasOption("a");
    String type = cmd.getOptionValue("t", "topic");
    boolean single = cmd.hasOption("single");
    int interval = Integer.parseInt(cmd.getOptionValue("interval", "10"));
    int delay = Integer.parseInt(cmd.getOptionValue("delay", "100"));

    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
    Date stop = sdf.parse(cmd.getOptionValue("stop", sdf.format(new Date())));

    Random r = new Random();
    Calendar timer = Calendar.getInstance();
    timer.setTime(sdf.parse(cmd.getOptionValue("start", "2010-01-01T00:00:00")));

    String msg_template = "{\"utcdt\": \"%s\", \"wp\": %d, \"gender\": \"%s\", \"age\": %d}";

    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();

    channel.exchangeDeclare(exchange, type, durable, autoDelete, null);

    do {
        int wp = (10 + r.nextInt(90)) * 100;
        String gender = r.nextBoolean() ? "male" : "female";
        int age = 20 + r.nextInt(70);

        String line = String.format(msg_template, sdf.format(timer.getTime()), wp, gender, age);

        channel.basicPublish(exchange, routingKey, null, line.getBytes());

        System.out.println("Sent message: " + line);

        timer.add(Calendar.SECOND, interval);

        Thread.sleep(delay);
    } while ((!single && stop.after(timer.getTime())));

    connection.close();
}

From source file:io.druid.firehose.rabbitmq.RabbitMQFirehoseFactory.java

License:Apache License

@Override
public Firehose connect(StringInputRowParser firehoseParser) throws IOException {
    final StringInputRowParser stringParser = firehoseParser;

    ConnectionOptions lyraOptions = new ConnectionOptions(this.connectionFactory);
    Config lyraConfig = new Config().withRecoveryPolicy(new RetryPolicy().withMaxRetries(config.getMaxRetries())
            .withRetryInterval(Duration.seconds(config.getRetryIntervalSeconds()))
            .withMaxDuration(Duration.seconds(config.getMaxDurationSeconds())));

    String queue = config.getQueue();
    String exchange = config.getExchange();
    String routingKey = config.getRoutingKey();

    boolean durable = config.isDurable();
    boolean exclusive = config.isExclusive();
    boolean autoDelete = config.isAutoDelete();

    final Connection connection = Connections.create(lyraOptions, lyraConfig);

    connection.addShutdownListener(new ShutdownListener() {
        @Override/*from  w  ww  . j a v  a2s . com*/
        public void shutdownCompleted(ShutdownSignalException cause) {
            log.warn(cause, "Connection closed!");
        }
    });

    final Channel channel = connection.createChannel();
    channel.queueDeclare(queue, durable, exclusive, autoDelete, null);
    channel.queueBind(queue, exchange, routingKey);
    channel.addShutdownListener(new ShutdownListener() {
        @Override
        public void shutdownCompleted(ShutdownSignalException cause) {
            log.warn(cause, "Channel closed!");
        }
    });

    // We create a QueueingConsumer that will not auto-acknowledge messages since that
    // happens on commit().
    final QueueingConsumer consumer = new QueueingConsumer(channel);
    channel.basicConsume(queue, false, consumer);

    return new Firehose() {
        /**
         * Storing the latest delivery as a member variable should be safe since this will only be run
         * by a single thread.
         */
        private Delivery delivery;

        /**
         * Store the latest delivery tag to be able to commit (acknowledge) the message delivery up to
         * and including this tag. See commit() for more detail.
         */
        private long lastDeliveryTag;

        @Override
        public boolean hasMore() {
            delivery = null;
            try {
                // Wait for the next delivery. This will block until something is available.
                delivery = consumer.nextDelivery();
                if (delivery != null) {
                    lastDeliveryTag = delivery.getEnvelope().getDeliveryTag();
                    // If delivery is non-null, we report that there is something more to process.
                    return true;
                }
            } catch (InterruptedException e) {
                // A little unclear on how we should handle this.

                // At any rate, we're in an unknown state now so let's log something and return false.
                log.wtf(e, "Got interrupted while waiting for next delivery. Doubt this should ever happen.");
            }

            // This means that delivery is null or we caught the exception above so we report that we have
            // nothing more to process.
            return false;
        }

        @Override
        public InputRow nextRow() {
            if (delivery == null) {
                //Just making sure.
                log.wtf("I have nothing in delivery. Method hasMore() should have returned false.");
                return null;
            }

            return stringParser.parse(StringUtils.fromUtf8(delivery.getBody()));
        }

        @Override
        public Runnable commit() {
            // This method will be called from the same thread that calls the other methods of
            // this Firehose. However, the returned Runnable will be called by a different thread.
            //
            // It should be (thread) safe to copy the lastDeliveryTag like we do below and then
            // acknowledge values up to and including that value.
            return new Runnable() {
                // Store (copy) the last delivery tag to "become" thread safe.
                final long deliveryTag = lastDeliveryTag;

                @Override
                public void run() {
                    try {
                        log.info("Acknowledging delivery of messages up to tag: " + deliveryTag);

                        // Acknowledge all messages up to and including the stored delivery tag.
                        channel.basicAck(deliveryTag, true);
                    } catch (IOException e) {
                        log.error(e, "Unable to acknowledge message reception to message queue.");
                    }
                }
            };
        }

        @Override
        public void close() throws IOException {
            log.info("Closing connection to RabbitMQ");
            channel.close();
            connection.close();
        }
    };
}

From source file:io.druid.segment.realtime.firehose.RabbitMQFirehoseFactory.java

License:Open Source License

@Override
public Firehose connect() throws IOException {
    String queue = config.getQueue();
    String exchange = config.getExchange();
    String routingKey = config.getRoutingKey();

    boolean durable = config.isDurable();
    boolean exclusive = config.isExclusive();
    boolean autoDelete = config.isAutoDelete();

    final Connection connection = connectionFactory.newConnection();
    connection.addShutdownListener(new ShutdownListener() {
        @Override/*  w w w .  j  a va  2 s . com*/
        public void shutdownCompleted(ShutdownSignalException cause) {
            log.warn(cause, "Connection closed!");
            //FUTURE: we could try to re-establish the connection here. Not done in this version though.
        }
    });

    final Channel channel = connection.createChannel();
    channel.queueDeclare(queue, durable, exclusive, autoDelete, null);
    channel.queueBind(queue, exchange, routingKey);
    channel.addShutdownListener(new ShutdownListener() {
        @Override
        public void shutdownCompleted(ShutdownSignalException cause) {
            log.warn(cause, "Channel closed!");
            //FUTURE: we could try to re-establish the connection here. Not done in this version though.
        }
    });

    // We create a QueueingConsumer that will not auto-acknowledge messages since that
    // happens on commit().
    final QueueingConsumer consumer = new QueueingConsumer(channel);
    channel.basicConsume(queue, false, consumer);

    return new Firehose() {
        /**
         * Storing the latest delivery as a member variable should be safe since this will only be run
         * by a single thread.
         */
        private QueueingConsumer.Delivery delivery;

        /**
         * Store the latest delivery tag to be able to commit (acknowledge) the message delivery up to
         * and including this tag. See commit() for more detail.
         */
        private long lastDeliveryTag;

        @Override
        public boolean hasMore() {
            delivery = null;
            try {
                // Wait for the next delivery. This will block until something is available.
                delivery = consumer.nextDelivery();
                if (delivery != null) {
                    lastDeliveryTag = delivery.getEnvelope().getDeliveryTag();
                    // If delivery is non-null, we report that there is something more to process.
                    return true;
                }
            } catch (InterruptedException e) {
                // A little unclear on how we should handle this.

                // At any rate, we're in an unknown state now so let's log something and return false.
                log.wtf(e, "Got interrupted while waiting for next delivery. Doubt this should ever happen.");
            }

            // This means that delivery is null or we caught the exception above so we report that we have
            // nothing more to process.
            return false;
        }

        @Override
        public InputRow nextRow() {
            if (delivery == null) {
                //Just making sure.
                log.wtf("I have nothing in delivery. Method hasMore() should have returned false.");
                return null;
            }

            return parser.parse(new String(delivery.getBody()));
        }

        @Override
        public Runnable commit() {
            // This method will be called from the same thread that calls the other methods of
            // this Firehose. However, the returned Runnable will be called by a different thread.
            //
            // It should be (thread) safe to copy the lastDeliveryTag like we do below and then
            // acknowledge values up to and including that value.
            return new Runnable() {
                // Store (copy) the last delivery tag to "become" thread safe.
                final long deliveryTag = lastDeliveryTag;

                @Override
                public void run() {
                    try {
                        log.info("Acknowledging delivery of messages up to tag: " + deliveryTag);

                        // Acknowledge all messages up to and including the stored delivery tag.
                        channel.basicAck(deliveryTag, true);
                    } catch (IOException e) {
                        log.error(e, "Unable to acknowledge message reception to message queue.");
                    }
                }
            };
        }

        @Override
        public void close() throws IOException {
            log.info("Closing connection to RabbitMQ");
            channel.close();
            connection.close();
        }
    };
}

From source file:io.snappydata.rabbitmq.RabbitMQPublisher.java

License:Open Source License

public static void main(String[] argv) throws Exception {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("localhost");
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();
    channel.queueDeclare(QUEUE_NAME, true, false, false, null);

    int logCount = 0;
    int totalNumLogs = 1000000;

    while (logCount <= totalNumLogs) {
        AdImpressionLog log = AdImpressionGenerator.nextRandomAdImpression();
        channel.basicPublish("", QUEUE_NAME, null, getLogBytes(log));
        logCount += 1;/*from   w w w .jav  a  2  s .  c om*/
        if (logCount % 100000 == 0) {
            System.out.println("RabbitMQPublisher published total " + logCount + " messages");
        }
    }

    channel.close();
    connection.close();
}

From source file:it.av.fac.messaging.rabbitmq.RabbitMQChannelPool.java

public static synchronized Channel createChannel(Connection conn, String queueIn, String queueOut,
        String routingKeyIn, String routingKeyOut) throws IOException {
    String UID = obtainUniqueId(queueIn, queueOut, routingKeyIn, routingKeyOut);

    if (!POOL.containsKey(UID) || !POOL.get(UID).isOpen()) {
        Channel channel = conn.createChannel();
        channel.exchangeDeclare(RabbitMQConstants.EXCHANGE, "direct", true);
        if (queueIn != null) {
            channel.queueDeclare(queueIn, false, false, true, null);
            channel.queueBind(queueIn, RabbitMQConstants.EXCHANGE, routingKeyIn);
        }//  ww  w  .  j  a v  a 2  s  .  co  m
        if (queueOut != null) {
            channel.queueDeclare(queueOut, false, false, true, null);
            channel.queueBind(queueOut, RabbitMQConstants.EXCHANGE, routingKeyOut);
        }

        POOL.put(UID, channel);
    }

    return POOL.get(UID);
}

From source file:it.jugtorino.one.msvc.way.rabbit.geoip.reference.client.RpcClientExample.java

License:Open Source License

private static Channel setupRabbitMQ() throws IOException, TimeoutException {
    ConnectionFactory factory = new ConnectionFactory();
    Connection connection = factory.newConnection(Collections.singletonList(new Address("localhost")));
    Channel channel = connection.createChannel();
    channel.queueDeclare("geoip_service_v1", false, false, false, null);
    return channel;
}

From source file:it.jugtorino.one.msvc.way.rabbit.geoip.reference.service.Main.java

License:Open Source License

private static Channel setupRabbitMQ() throws IOException, TimeoutException {
    ConnectionFactory factory = new ConnectionFactory();
    Connection connection = factory.newConnection(Arrays.asList(new Address("localhost")));
    Channel channel = connection.createChannel();
    channel.queueDeclare("geoip_service_v1", false, false, false, null);
    return channel;
}

From source file:it.jugtorino.one.msvc.way.rabbit.reference.webapp.GeoIPResource.java

License:Open Source License

public GeoIPResource() throws Exception {
    ConnectionFactory factory = new ConnectionFactory();
    Connection connection = factory.newConnection(Collections.singletonList(new Address("localhost")));
    Channel channel = connection.createChannel();
    channel.queueDeclare("geoip_service_v1", false, false, false, null);

    client = new RpcClient(channel, "geoip_service_v1");
    client.startConsuming();/*from   ww  w.java2  s .  c o  m*/
}

From source file:it.txt.ens.authorisationService.amqp.AMQPConnectionHelper.java

License:Apache License

/**   
 * Create an AMQP connection and a channel relating to that connection.
 * //from  w ww  .j ava  2 s  . c o  m
*/
public Connection connection(String user, String password, String vHost, String Host, Integer port)
        throws IOException {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setUsername(user);
    factory.setPassword(password);
    factory.setVirtualHost(vHost);
    factory.setHost(Host);
    factory.setPort(port);
    Connection conn = factory.newConnection();
    final Channel c = conn.createChannel();

    channel = c;

    return conn;
}

From source file:it.txt.ens.authorisationService.util.AccessRequestEvaluator.java

License:Apache License

private Permission createSubscribingPermissionsAndResources(boolean userAlreadyExists, String operativeHost,
        int httpPort, int operativePort, String operativeVhost, String ensUsername, String ensPwd,
        String adminUsername, String adminPwd, PermissionService permissionService, String queueName,
        String exchangeName) throws ENSResponseFactoryException {
    if (LOGGER.isLoggable(Level.FINE))
        LOGGER.fine(MessageFormat.format(MESSAGES.getString("evaluationStep9ExplainationS"), ensUsername,
                namespace, routingKey));
    Connection adminConnection = null;
    ConnectionFactory factory = new ConnectionFactory();
    factory.setUsername(adminUsername);/*w w w. j  a  va 2s .  c  o  m*/
    factory.setPassword(adminPwd);
    factory.setVirtualHost(operativeVhost);
    factory.setHost(operativeHost);
    factory.setPort(operativePort);
    try {
        adminConnection = factory.newConnection();
        Channel channel = adminConnection.createChannel();
        //check if the queue exists
        if (AMQPQueueHelper.exists(channel, queueName)) {
            FailureResponseDetails failureDetails = new FailureResponseDetails();
            String reason = ErrorCodes.INTERNAL_ERROR;
            failureDetails.setErrorReason(reason);
            failureDetails.setErrorCode(ErrorCodes.INTERNAL_ERROR);
            responseType = ensResponseFactory.createFailureResponse(requestType.getRequestID(),
                    requestType.getTimeStamp(), failureDetails);
            if (LOGGER.isLoggable(Level.INFO))
                LOGGER.log(Level.INFO,
                        MessageFormat.format(MESSAGES.getString("evaluationStep9Failure"),
                                ErrorCodes.INTERNAL_ERROR, reason,
                                MessageFormat.format(MESSAGES.getString("alreadyExistingQueue"), queueName,
                                        operativeVhost, operativeHost + ":" + operativePort)));
            return null;
        }
        //forcing creating a new Connection because the following exception is thrown even on new Channel
        //            com.rabbitmq.client.AlreadyClosedException: clean connection shutdown; reason: Attempt to use closed channel
        //            at com.rabbitmq.client.impl.AMQChannel.ensureIsOpen(AMQChannel.java:190)
        //            at com.rabbitmq.client.impl.AMQChannel.rpc(AMQChannel.java:223)
        //            at com.rabbitmq.client.impl.AMQChannel.privateRpc(AMQChannel.java:209)
        //            at com.rabbitmq.client.impl.AMQChannel.exnWrappingRpc(AMQChannel.java:118)
        //            at com.rabbitmq.client.impl.ChannelN.queueDeclare(ChannelN.java:766)
        //            at com.rabbitmq.client.impl.ChannelN.queueDeclare(ChannelN.java:61)
        //            at it.txt.ens.authorisationService.amqp.AMQPQueueHelper.creates(AMQPQueueHelper.java:42)
        //            at it.txt.ens.authorisationService.util.AccessRequestEvaluator.createSubscribingPermissionsAndResources(AccessRequestEvaluator.java:893)
        //            at it.txt.ens.authorisationService.util.AccessRequestEvaluator.executeRabbitMQOperations(AccessRequestEvaluator.java:499)
        //            at it.txt.ens.authorisationService.util.AccessRequestEvaluator.evaluate(AccessRequestEvaluator.java:284)
        //            at it.txt.ens.authorisationService.util.AccessRequestEvaluator.run(AccessRequestEvaluator.java:216)
        //            at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
        //            at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
        //            at java.util.concurrent.FutureTask.run(Unknown Source)
        //            at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        //            at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        //            at java.lang.Thread.run(Unknown Source)
        adminConnection.close();
        adminConnection = factory.newConnection();
        AMQPQueueHelper.creates(adminConnection.createChannel(), queueName, false, false, true);
        if (LOGGER.isLoggable(Level.FINE))
            LOGGER.fine(MessageFormat.format(MESSAGES.getString("evaluationStep9OK-1S"), queueName,
                    operativeVhost, operativeHost + ":" + operativePort));
        adminConnection.createChannel().queueBind(queueName, exchangeName, routingKey);
        if (LOGGER.isLoggable(Level.FINE))
            LOGGER.fine(
                    MessageFormat.format(MESSAGES.getString("evaluationStep9OK-2S"), queueName, exchangeName));
        //            if (userAlreadyExists)
        //                return mergePermissions(permissionService , operativeVhost, ensUsername, "", "", queueName);
        //            else
        return new Permission(operativeVhost, ensUsername, "", "", queueName);
    } catch (Exception e) {
        FailureResponseDetails failureDetails = new FailureResponseDetails();
        String reason = MESSAGES.getString(ErrorCodes.ENS_RESOURCE_RESERVATION_FAILURE);
        failureDetails.setErrorReason(reason);
        failureDetails.setErrorCode(ErrorCodes.ENS_RESOURCE_RESERVATION_FAILURE);
        responseType = ensResponseFactory.createFailureResponse(requestType.getRequestID(),
                requestType.getTimeStamp(), failureDetails);
        if (LOGGER.isLoggable(Level.INFO))
            LOGGER.log(Level.INFO, MessageFormat.format(MESSAGES.getString("evaluationStep9Failure"),
                    ErrorCodes.ENS_RESOURCE_RESERVATION_FAILURE, reason, e.getMessage()), e);
        return null;
    } finally {
        if (adminConnection != null)
            try {
                adminConnection.close();
            } catch (IOException e) {
            }
    }
}