Example usage for com.rabbitmq.client Channel exchangeDeclare

List of usage examples for com.rabbitmq.client Channel exchangeDeclare

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Introduction

In this page you can find the example usage for com.rabbitmq.client Channel exchangeDeclare.

Prototype

Exchange.DeclareOk exchangeDeclare(String exchange, BuiltinExchangeType type) throws IOException;

Source Link

Document

Actively declare a non-autodelete, non-durable exchange with no extra arguments

Usage

From source file:at.ac.tuwien.dsg.cloud.utilities.messaging.lightweight.rabbitMq.channel.ARabbitChannel.java

License:Apache License

protected Channel getChannel() throws ChannelException {
    try {//from w w w  .j  a v  a  2s .c  o m
        synchronized (connectionFactory) {
            if (connection == null) {
                try {
                    String host = discovery.discoverHost();

                    if (host == null || host.isEmpty()) {
                        throw new ChannelException(String.format("Discovery returned invalid host: %s", host));
                    }

                    connectionFactory.setHost(host);
                    connection = connectionFactory.newConnection();
                } catch (IOException | DiscoveryException ex) {
                    //we do not reconnect in here do to the fact
                    //that we are discarding messages which are
                    //send during a disconnection phase
                    throw new ChannelException("Exception while connecting to RabbitMQ!", ex);
                }
            }
        }

        Channel channel = connection.createChannel();
        channel.exchangeDeclare(EXCHANGE_NAME, "topic");
        return channel;
    } catch (IOException ex) {
        //in case we can not create a channel
        //try to establish a new connection
        try {
            //try to close old connection never the less
            connection.close();
        } catch (IOException ex1) {
            //ignore
        }

        connection = null;
        return this.getChannel();
    }
}

From source file:com.ericsson.research.IoTFrameworkEndpoint.java

License:Open Source License

public void subscribe(String hostName, String StreamId, final DataPointCallback dataPointCallback)
        throws IOException {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost(hostName); // listening on port 5672

    Connection connection = factory.newConnection();

    final Channel channel = connection.createChannel();
    final String EXCHANGE_NAME = "streams." + StreamId;

    channel.exchangeDeclare(EXCHANGE_NAME, "fanout");
    String queueName = channel.queueDeclare().getQueue();
    channel.queueBind(queueName, EXCHANGE_NAME, "");

    dataPointCallback.setConnection(connection);

    boolean autoAck = true;
    channel.basicConsume(queueName, autoAck, "myConsumerTag", new DefaultConsumer(channel) {
        @Override//  w  ww  .  j  av  a 2s  .  com
        public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                byte[] body) throws IOException {
            DataPointNotification notification = gson.fromJson(new String(body), DataPointNotification.class);
            dataPointCallback.handleNotification(notification);
        }
    });
}

From source file:com.es.dashboard.ConnectionBroker.java

@PostConstruct
public void init() {

    bigBaite = new LinkedList<>();
    readings = new ArrayList<Reading>();
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("systembus"); // RabbitMQ IP
    Connection connection = null;
    try {// www. j a va  2  s.c  om
        connection = factory.newConnection();
    } catch (IOException ex) {
        logger.error(ex);
    } catch (TimeoutException ex) {
        logger.error(ex);
    }
    Channel channel = null;
    try {
        channel = connection.createChannel();
    } catch (IOException ex) {
        logger.error(ex);
    }

    try {
        channel.exchangeDeclare("sensors", "topic"); // sensors is the name of the exchange
    } catch (IOException ex) {
        logger.error(ex);
    }
    AMQP.Queue.DeclareOk result = null;
    try {
        result = channel.queueDeclare("", false, true, false, null);
    } catch (IOException ex) {
        logger.error(ex);
    }
    String queuename = result.getQueue();
    try {
        channel.queueBind(queuename, "sensors", "realtime.sensordata"); // Binding key is #, this will consume all messages
        channel.queueBind(queuename, "sensors", "realtime.alarms"); // Binding key is #, this will consume all messages
    } catch (IOException ex) {
        logger.error(ex);
    }

    logger.info(" [*] Waiting for messages. To exit press CTRL+C");

    Consumer consumer = new DefaultConsumer(channel) {
        @Override
        public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                byte[] body) throws IOException {
            String message = new String(body, "UTF-8");
            EventBus eventBus = EventBusFactory.getDefault().eventBus();
            Gson gson = new Gson();
            Type type = new TypeToken<Map<String, String>>() {
            }.getType();
            Map<String, String> myMap = gson.fromJson(message, type);
            if (envelope.getRoutingKey().equals("realtime.alarms")) {
                eventBus.publish("/channel", message);
                return;
            }
            logger.info(envelope.getRoutingKey());

            readings.add(new Reading(new Date(Long.parseLong(myMap.get("timestamp"))), myMap.get("data"),
                    myMap.get("name"), myMap.get("room")));
            eventBus.publish("/channel", message);

        }
    };
    try {
        //RequestContext.getCurrentInstance().execute("function rpt() {$(\".qualquer\").first().trigger(\"click\")}"
        //        + "var timeoutdummy = window.setInterval(rpt,2000);");
        channel.basicConsume(queuename, true, consumer);
    } catch (IOException ex) {
        ex.printStackTrace();
        logger.error(ex);
    }

}

From source file:com.es.dashboard.ConnectionBrokerJPA.java

@PostConstruct
public void init() {
    bigBaite = new LinkedList<>();
    readings = new ArrayList<Reading>();
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("systembus"); // RabbitMQ IP
    Connection connection = null;
    try {/*from  w ww .  j av  a2 s  .  co m*/
        connection = factory.newConnection();
    } catch (IOException ex) {
        logger.error(ex);
    } catch (TimeoutException ex) {
        logger.error(ex);
    }
    Channel channel = null;
    try {
        channel = connection.createChannel();
    } catch (IOException ex) {
        logger.error(ex);
    }

    try {
        channel.exchangeDeclare("sensors", "topic"); // sensors is the name of the exchange
    } catch (IOException ex) {
        logger.error(ex);
    }
    AMQP.Queue.DeclareOk result = null;
    try {
        result = channel.queueDeclare("", false, true, false, null);
    } catch (IOException ex) {
        logger.error(ex);
    }
    String queuename = result.getQueue();
    try {
        channel.queueBind(queuename, "sensors", "dashboard.response"); // Binding key is #, this will consume all messages
    } catch (IOException ex) {
        logger.error(ex);
    }

    logger.info(" [*] Waiting for messages. To exit press CTRL+C");

    Consumer consumer = new DefaultConsumer(channel) {
        @Override
        public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                byte[] body) throws IOException {
            String message = new String(body, "UTF-8");

            EventBus eventBus = EventBusFactory.getDefault().eventBus();
            Gson gson = new Gson();
            Type type = new TypeToken<Map<String, String>>() {
            }.getType();
            Map<String, String> myMap = gson.fromJson(message, type);
            if (envelope.getRoutingKey().equals("realtime.alarms")) {
                eventBus.publish("/jpa", message);
                return;
            }
            System.out.println(envelope.getRoutingKey());
            logger.info(envelope.getRoutingKey());

            //readings.add(new Reading(new Date(Long.parseLong(myMap.get("timestamp"))), myMap.get("value"), myMap.get("name"), myMap.get("room")));
            //System.out.println("publishing " + msg_to_publish);
            eventBus.publish("/jpa", message);
            //System.out.println("published");

        }
    };
    try {
        //RequestContext.getCurrentInstance().execute("function rpt() {$(\".qualquer\").first().trigger(\"click\")}"
        //        + "var timeoutdummy = window.setInterval(rpt,2000);");
        channel.basicConsume(queuename, true, consumer);
    } catch (IOException ex) {
        ex.printStackTrace();
        logger.error(ex);
    }

}

From source file:com.es.dashboard.ConnectionBrokerJPA.java

public void requestData() throws IOException, TimeoutException, InterruptedException {
    System.out.println("ran");
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("systembus"); // RabbitMQ IP
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();
    channel.exchangeDeclare("sensors", "topic");

    JSONObject json = new JSONObject();
    json.put("name", "Temperatura dos Narcisos");
    json.put("room", "masterbath");
    json.put("start", System.currentTimeMillis() - 3600000);
    json.put("end", System.currentTimeMillis());
    channel.basicPublish("sensors", "dashboard.request", null, json.toString().getBytes());

    json = new JSONObject();
    json.put("name", "Humidade da Cave");
    json.put("room", "masterbath");
    json.put("start", System.currentTimeMillis() - 3600000);
    json.put("end", System.currentTimeMillis());
    channel.basicPublish("sensors", "dashboard.request", null, json.toString().getBytes());

    json = new JSONObject();
    json.put("name", "Luminosidade da Estufa");
    json.put("room", "masterbath");
    json.put("start", System.currentTimeMillis() - 3600000);
    json.put("end", System.currentTimeMillis());
    channel.basicPublish("sensors", "dashboard.request", null, json.toString().getBytes());

    json = new JSONObject();
    json.put("name", "Sensor de Fumo");
    json.put("room", "masterbath");
    json.put("start", System.currentTimeMillis() - 3600000);
    json.put("end", System.currentTimeMillis());

    channel.basicPublish("sensors", "dashboard.request", null, json.toString().getBytes());
    //System.err.println("booting");
}

From source file:com.gemini.provision.network.main.GeminiNetworkProvisionMain.java

public static void main(String[] args) {

    //activate logging level if it is DEBUG, default is INFO so no need for any
    //action if it is otherwise
    Injector propInjector = Guice.createInjector(new GeminiPropertiesModule());
    GeminiProperties properties = propInjector.getInstance(GeminiProperties.class);
    if (properties.getProperties().getProperty("LOGGING_LEVEL").equals("DEBUG")) {
        Configurator.defaultConfig().level(Level.DEBUG).activate();
    }/*from  w  w w .  j av  a 2  s . co m*/

    //inject the mapper as it will be used in all the threads
    Injector mapperInjector = Guice.createInjector(new GeminiMapperModule());
    mapper = mapperInjector.getInstance(GeminiMapper.class);

    //the app.yml to deployment.yml converter
    Thread yamlConverterThread = new Thread(() -> {
        //setup the message receiver
        final Connection connection;
        final Channel channel;
        final QueueingConsumer consumer;

        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost(properties.getProperties().getProperty("MESSAGING_HOST"));
        String queueName = null;
        try {
            connection = factory.newConnection();
            channel = connection.createChannel();
            channel.exchangeDeclare(properties.getProperties().getProperty("EXCHANGE_NAME"), "topic");
            queueName = channel.queueDeclare().getQueue();
            channel.queueBind(queueName, properties.getProperties().getProperty("EXCHANGE_NAME"),
                    properties.getProperties().getProperty("YAML_MAPPER_TOPIC"));
            consumer = new QueueingConsumer(channel);
            channel.basicConsume(queueName, true, consumer);
        } catch (IOException | NullPointerException | NumberFormatException ex) {
            Logger.error("Fatal Error: YAML Mapper - could not connect to messaging system. Exception: {}", ex);
            return;
        }

        QueueingConsumer.Delivery delivery = null;
        while (true) {
            try {
                delivery = consumer.nextDelivery();
            } catch (InterruptedException | ShutdownSignalException | ConsumerCancelledException ex) {
                Logger.error("Fatal Error: YAML Mapper - could not retrieve message. Exception: {}", ex);
                continue;
            }

            String routingKey = delivery.getEnvelope().getRoutingKey();
            String jsonBody = new String(delivery.getBody());

            //TODO: NEED TO PUT THE MESSAGE BACK IN THE QUEUE IF THERE IS A FAILURE
            Integer status = 0;
            if (routingKey.equals(properties.getProperties().getProperty("YAML_MAPPER_MAP_APP"))) {
                status = mapApptoDeployment(jsonBody);
            } else {
                continue;
            }

            if (status == 0) {
                try {
                    channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
                } catch (IOException ex) {
                    Logger.error("Could not ack message. Exception: {}", ex);
                }
            } else {
                //failed so requeue the message
                try {
                    channel.basicNack(delivery.getEnvelope().getDeliveryTag(), false, true);
                } catch (IOException ex) {
                    Logger.error("Could not nack message. Exception: {}", ex);
                }
            }
        }
    });
    yamlConverterThread.start();

    //the networking message recevier
    Thread networkingThread = new Thread(() -> {
        //setup the message receiver
        final Connection connection;
        final Channel channel;
        final QueueingConsumer consumer;

        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost(properties.getProperties().getProperty("MESSAGING_HOST"));
        String queueName = null;
        try {
            connection = factory.newConnection();
            channel = connection.createChannel();
            channel.exchangeDeclare(properties.getProperties().getProperty("EXCHANGE_NAME"), "topic");
            queueName = channel.queueDeclare().getQueue();
            channel.queueBind(queueName, properties.getProperties().getProperty("EXCHANGE_NAME"),
                    properties.getProperties().getProperty("NETWORK_TOPIC"));
            //                channel.basicQos(Integer.parseUnsignedInt(properties.getProperties().getProperty("PREFETCH_COUNT")));
            consumer = new QueueingConsumer(channel);
            channel.basicConsume(queueName, true, consumer);
        } catch (IOException | NullPointerException | NumberFormatException ex) {
            Logger.error("Fatal Error: could not connect to messaging system. Exception: {}", ex);
            return;
        }

        QueueingConsumer.Delivery delivery = null;
        while (true) {
            try {
                delivery = consumer.nextDelivery();
            } catch (InterruptedException | ShutdownSignalException | ConsumerCancelledException ex) {
                Logger.error("Could not get message from queue. Exception: {}", ex);

                //TODO: NEED TO PUT THE MESSAGE BACK IN THE QUEUE
                continue;
            }

            String routingKey = delivery.getEnvelope().getRoutingKey();
            String jsonBody = new String(delivery.getBody());

            //TODO: NEED TO PUT THE MESSAGE BACK IN THE QUEUE IF THERE IS A FAILURE
            if (routingKey.equals(properties.getProperties().getProperty("NETWORK_TASK_CREATE"))) {
                createNetwork(jsonBody);
            } else if (routingKey.equals(properties.getProperties().getProperty("NETWORK_TASK_UPDATE"))) {
                updateNetwork(jsonBody);
            } else if (routingKey.equals(properties.getProperties().getProperty("NETWORK_TASK_DELETE"))) {
                deleteNetwork(jsonBody);
            } else if (routingKey.equals(properties.getProperties().getProperty("SUBNET_TASK_CREATE"))) {
                createSubnet(jsonBody);
            } else if (routingKey.equals(properties.getProperties().getProperty("SUBNET_TASK_UPDATE"))) {
                updateSubnet(jsonBody);
            } else if (routingKey.equals(properties.getProperties().getProperty("SUBNET_TASK_DELETE"))) {
                deleteSubnet(jsonBody);
            } else if (routingKey.equals(properties.getProperties().getProperty("ROUTER_TASK_CREATE"))) {
                createRouter(jsonBody);
            } else if (routingKey.equals(properties.getProperties().getProperty("ROUTER_TASK_UPDATE"))) {
                updateRouter(jsonBody);
            } else if (routingKey.equals(properties.getProperties().getProperty("ROUTER_TASK_DELETE"))) {
                deleteRouter(jsonBody);
            }

            try {
                channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
            } catch (IOException ex) {
                Logger.error("Could not ack message. Exception: {}", ex);
            }
        }
    });
    networkingThread.start();

    //the load balancer 
    Thread lbThread = new Thread(() -> {
    });

    lbThread.start();

    //the security thread
    Thread securityThread = new Thread(() -> {
        //setup the message receiver
        final Connection connection;
        final Channel channel;
        final QueueingConsumer consumer;

        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost(properties.getProperties().getProperty("MESSAGING_HOST"));
        String queueName = null;
        try {
            connection = factory.newConnection();
            channel = connection.createChannel();
            channel.exchangeDeclare(properties.getProperties().getProperty("EXCHANGE_NAME"), "topic");
            queueName = channel.queueDeclare().getQueue();
            channel.queueBind(queueName, properties.getProperties().getProperty("EXCHANGE_NAME"),
                    properties.getProperties().getProperty("SECURITY_TOPIC"));
            //                channel.basicQos(Integer.parseUnsignedInt(properties.getProperties().getProperty("PREFETCH_COUNT")));
            consumer = new QueueingConsumer(channel);
            channel.basicConsume(queueName, true, consumer);
        } catch (IOException | NullPointerException | NumberFormatException ex) {
            Logger.error("Fatal Error: could not connect to messaging system. Exception: {}", ex);
            return;
        }

        QueueingConsumer.Delivery delivery = null;
        while (true) {
            try {
                delivery = consumer.nextDelivery();
            } catch (InterruptedException | ShutdownSignalException | ConsumerCancelledException ex) {
                Logger.error("Could not get message from queue. Exception: {}", ex);
                continue;
            }

            String routingKey = delivery.getEnvelope().getRoutingKey();
            String jsonBody = new String(delivery.getBody());

            //TODO: NEED TO PUT THE MESSAGE BACK IN THE QUEUE IF THERE IS A FAILURE
            if (routingKey.equals(properties.getProperties().getProperty("SECURITY_TASK_SG_CREATE"))) {
                createSecurityGroup(jsonBody);
            } else if (routingKey.equals(properties.getProperties().getProperty("SECURITY_TASK_SG_UPDATE"))) {
                updateSecurityGroup(jsonBody);
            } else if (routingKey.equals(properties.getProperties().getProperty("SECURITY_TASK_SG_DELETE"))) {
                deleteSecurityGroup(jsonBody);
            } else if (routingKey
                    .equals(properties.getProperties().getProperty("SECURITY_TASK_SG_RULE_CREATE"))) {
                createSecurityGroupRule(jsonBody);
            } else if (routingKey
                    .equals(properties.getProperties().getProperty("SECURITY_TASK_SG_RULE_UPDATE"))) {
                updateSecurityGroupRule(jsonBody);
            } else if (routingKey
                    .equals(properties.getProperties().getProperty("SECURITY_TASK_SG_RULE_DELETE"))) {
                deleteSecurityGroupRule(jsonBody);
            }

            try {
                channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
            } catch (IOException ex) {
                Logger.error("Could not ack message. Exception: {}", ex);
            }
        }
    });
    securityThread.start();
}

From source file:com.github.dann.wspusher.pubsub.publisher.impl.RabbitMQPublisherImpl.java

License:Apache License

public void publish(String exchange, String message) {
    Connection connection = null;
    Channel channel = null;
    try {/*from  w  w  w. j  ava2s  . c  om*/
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost(WsConfig.getMQServerHost());
        connection = factory.newConnection();
        channel = connection.createChannel();
        channel.exchangeDeclare(exchange, EXCHANGE_TYPE);
        channel.basicPublish(exchange, "", null, message.getBytes(WsConstants.ENCODING_UTF8));

    } catch (Exception e) {
        logger.error("Publishing message faile", e);
        throw new WsRuntimeException("Publishig message failed", e);
    } finally {
        RabbitMQResourceUtils.closeQuietly(channel);
        RabbitMQResourceUtils.closeQuietly(connection);
    }

}

From source file:com.github.dann.wspusher.pubsub.subscriber.impl.RabbitMQSubscriberImpl.java

License:Apache License

@Override
public void subscribe(String exchange, DataPusherWebSocket webSocket) {
    Connection connection = null;
    Channel channel = null;

    try {/*  w  w  w. jav  a 2 s  .  c  o m*/
        // FIXME Cache connection!
        ConnectionFactory factory = new ConnectionFactory();
        connection = factory.newConnection();
        channel = connection.createChannel();

        channel.exchangeDeclare(exchange, DEFAULT_EXCHANGE_TYPE);
        String queueName = channel.queueDeclare().getQueue();
        channel.queueBind(queueName, exchange, "");
        QueueingConsumer consumer = new QueueingConsumer(channel);
        channel.basicConsume(queueName, true, consumer);

        doWork(consumer, webSocket);

    } catch (Exception e) {
        logger.error("Error occured", e);
        throw new WsRuntimeException(e);

    } finally {
        RabbitMQResourceUtils.closeQuietly(channel);
        RabbitMQResourceUtils.closeQuietly(connection);
    }

}

From source file:com.groupx.recipientlist.test.RecipientList.java

public static void main(String[] argv) throws java.io.IOException, TimeoutException {

    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("localhost");
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();

    channel.exchangeDeclare(EXCHANGE_NAME, "fanout");

    String message = getMessage(argv);

    channel.basicPublish(EXCHANGE_NAME, "", null, message.getBytes());
    System.out.println(" [x] Sent '" + message + "'");

    channel.close();//w ww .  j a  v a  2 s .com
    connection.close();
}

From source file:com.groupx.recipientlist.test.TranslatorMock.java

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

    channel.exchangeDeclare(EXCHANGE_NAME, "fanout");
    String queueName = channel.queueDeclare().getQueue();
    channel.queueBind(queueName, EXCHANGE_NAME, "");

    System.out.println(" [*] Waiting for messages. To exit press X+ENTER");

    Consumer consumer = new DefaultConsumer(channel) {
        @Override/*from  w ww.  j  a v  a  2  s  . com*/
        public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                byte[] body) throws IOException {
            String message = new String(body, "UTF-8");
            System.out.println(" [x] Received '" + message + "'");
        }
    };
    channel.basicConsume(queueName, true, consumer);
    try {
        Scanner in = new Scanner(System.in);
        String input = in.next();
        if ("x".equals(input)) {
            System.exit(0);
        }
    } catch (Exception e) {

    }
}