Example usage for com.rabbitmq.client Channel exchangeDeclare

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

  1. HOME
  2. Java
  3. com.rabbitmq
  4. com.rabbitmq.client.*
  5. Channel
  6. exchangeDeclare

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:com.mycompany.javateste.queues.topic.EmitLogTopic.java

public static void main(String[] argv) {
    Connection connection = null;
    Channel channel = null;
    try {//from   w w w. j  a  va2 s  .  c o m
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("localhost");

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

        channel.exchangeDeclare(EXCHANGE_NAME, "topic");

        String routingKey = getRouting(argv);
        String message = getMessage(argv);

        channel.basicPublish(EXCHANGE_NAME, routingKey, null, message.getBytes("UTF-8"));
        System.out.println(" [x] Sent '" + routingKey + "':'" + message + "'");

    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (connection != null) {
            try {
                connection.close();
            } catch (Exception ignore) {
            }
        }
    }
}

From source file:com.mycompany.javateste.queues.topic.ReceiveLogsTopic.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, "topic");
    String queueName = channel.queueDeclare().getQueue();

    if (argv.length < 1) {
        System.err.println("Usage: ReceiveLogsTopic [binding_key]...");
        System.exit(1);//  w w  w .  j  av  a  2 s .com
    }

    for (String bindingKey : argv) {
        channel.queueBind(queueName, EXCHANGE_NAME, bindingKey);
    }

    System.out.println(" [*] 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");
            System.out.println(" [x] Received '" + envelope.getRoutingKey() + "':'" + message + "'");
        }
    };
    channel.basicConsume(queueName, true, consumer);
}

From source file:com.mycompany.loanbroker.requestLoan.java

/**
 * Web service operation/*w w w  .  j av  a  2s  . c  om*/
 */
@WebMethod(operationName = "request")
public String request(@WebParam(name = "ssn") String ssn, @WebParam(name = "loanAmount") double loanAmount,
        @WebParam(name = "loanDuration") int loanDuration) throws IOException, InterruptedException {

    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("datdb.cphbusiness.dk");
    factory.setUsername("Dreamteam");
    factory.setPassword("bastian");
    Connection connection = factory.newConnection();
    Channel sendingchannel = connection.createChannel();
    Channel listeningChannel = connection.createChannel();

    listeningChannel.exchangeDeclare(EXCHANGE, "direct");
    listeningChannel.queueDeclare(LISTENING_QUEUE_NAME, false, false, false, null);
    listeningChannel.queueBind(LISTENING_QUEUE_NAME, EXCHANGE, ssn.replace("-", ""));

    sendingchannel.queueDeclare(SENDING_QUEUE_NAME, false, false, false, null);

    message = ssn + "," + loanAmount + "," + loanDuration;

    sendingchannel.basicPublish("", SENDING_QUEUE_NAME, null, message.getBytes());

    sendingchannel.close();

    Consumer consumer = new DefaultConsumer(listeningChannel) {
        @Override
        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] The LoanBroker Has Received '" + message + "'");
            result = message;
        }
    };

    listeningChannel.basicConsume(LISTENING_QUEUE_NAME, true, consumer);
    //connection.close();

    return result;
}

From source file:com.mycompany.net.Run.java

/**
 * @param args the command line arguments
 * @throws java.io.IOException/*from   www  . j a va 2s.com*/
 * @throws java.util.concurrent.TimeoutException
 */
public static void main(String[] args) throws IOException, TimeoutException {
    // TODO code application logic here

    JPA jpa = new JPA();
    jpa.initDB();

    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("systembus"); // RabbitMQ IP
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();

    channel.exchangeDeclare("sensors", "topic"); // sensors is the name of the exchange
    AMQP.Queue.DeclareOk result = channel.queueDeclare("", false, true, false, null);
    String queuename = result.getQueue();
    //bind to sensor info
    channel.queueBind(queuename, "sensors", "gateway.data"); // Binding key is #, this will consume all messages

    //bind to the dashboard
    channel.queueBind(queuename, "sensors", "dashboard.request");

    //bind to Processing units output
    channel.queueBind(queuename, "sensors", "database.put");

    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 {

            try {
                String message = new String(body, "UTF-8");
                Gson gson = new Gson();
                Type type = new TypeToken<Map<String, String>>() {
                }.getType();
                Map<String, String> myMap = gson.fromJson(message, type);
                logger.info(" [x] " + envelope.getRoutingKey() + " - Received '" + message + "'");

                String routing_key = envelope.getRoutingKey();
                if ("gateway.data".equals(routing_key)) {
                    jpa.saveRawToDB(myMap);
                } else if ("database.put".equals(routing_key)) {
                    jpa.saveAlertToDB(myMap);
                } else if ("dashboard.request".equals(routing_key)) {
                    Thread.sleep(1000);
                    jpa.processRequest(myMap, channel);
                } else
                    logger.error("NOT A VALID MESSAGE!");

            } catch (Exception e) {
                logger.error(e.toString());
            }

        }
    };

    channel.basicConsume(queuename, true, consumer);

    //channel.close();
    //connection.close();

    //entityManager.close();
    //entityManagerFactory.close();

}

From source file:com.mycompany.normalizer.Normalizer.java

public static void main(String[] argv) throws Exception {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("datdb.cphbusiness.dk");
    factory.setUsername("Dreamteam");
    factory.setPassword("bastian");
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();
    final Channel sendingChannel = connection.createChannel();

    channel.queueDeclare(QUEUE_NAME, false, false, false, null);

    sendingChannel.exchangeDeclare(SENDING_QUEUE_NAME, "fanout");
    System.out.println(" [*] Waiting for messages. To exit press CTRL+C");

    Consumer consumer = new DefaultConsumer(channel) {
        @Override/*from w  w  w  . ja 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 + "'");

            //HANDLE HERE
            if (message.startsWith("{")) {
                // Transform with GSON

                schoolBank = message.contains("-");

                if (!schoolBank) {
                    message = message.replace("-", "");
                    JResponse jresponse = gson.fromJson(message, JResponse.class);
                    jresponse.setBank("cphbusiness.bankJSON");
                    message = gson.toJson(jresponse);

                } else {
                    message = message.replace("-", "");
                    JResponse jresponse = gson.fromJson(message, JResponse.class);
                    jresponse.setBank("DreamTeamBankJSON");
                    message = gson.toJson(jresponse);
                }

                sendingChannel.basicPublish(SENDING_QUEUE_NAME, "", null, message.getBytes());

            } else {

                schoolBank = message.contains("-");
                String result = "";

                if (!schoolBank) {
                    message = message.replace("-", "");
                    JSONObject soapDatainJsonObject = XML.toJSONObject(message);

                    result = gson.toJson(soapDatainJsonObject);
                    result = result.replace("{\"map\":{\"LoanResponse\":{\"map\":", "");
                    result = result.replace("}}}", "");

                    JResponse jresponse = gson.fromJson(result, JResponse.class);
                    jresponse.setBank("cphbusiness.bankXML");
                    result = gson.toJson(jresponse);

                } else {
                    message = message.replace("-", "");
                    JSONObject soapDatainJsonObject = XML.toJSONObject(message);

                    result = gson.toJson(soapDatainJsonObject);
                    result = result.replace("{\"map\":{\"LoanResponse\":{\"map\":", "");
                    result = result.replace("}}}", "");

                    JResponse jresponse = gson.fromJson(result, JResponse.class);
                    jresponse.setBank("DreamTeamBankXML");

                    result = gson.toJson(jresponse);
                }

                //  XResponse response = gson.fromJson(soapDatainJsonObject, XResponse.class);
                sendingChannel.basicPublish(SENDING_QUEUE_NAME, "", null, result.getBytes());

            }

        }
    };
    channel.basicConsume(QUEUE_NAME, true, consumer);
}

From source file:com.mycompany.receiptlist.ReceiptList.java

public static void main(String[] argv) throws Exception {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("datdb.cphbusiness.dk");
    factory.setUsername("Dreamteam");
    factory.setPassword("bastian");
    Connection connection = factory.newConnection();
    Channel listeningChannel = connection.createChannel();
    final Channel sendingChannel = connection.createChannel();

    listeningChannel.queueDeclare(QUEUE_NAME, false, false, false, null);
    sendingChannel.exchangeDeclare(EXCHANGE_NAME, "direct");
    System.out.println(" [*] Waiting for messages. To exit press CTRL+C");

    Consumer consumer = new DefaultConsumer(listeningChannel) {
        @Override//ww w  .  j  a v a 2 s.  co  m
        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 + "'");

            String[] arr = message.split(",");

            for (int i = 0; i < arr.length; i++) {
                switch (arr[i]) {
                case "DreamTeamXMLQueue":
                    sendingChannel.basicPublish(EXCHANGE_NAME, "DreamTeamBankXML", null, message.getBytes());
                    break;
                case "DreamTeamJSONQueue":
                    sendingChannel.basicPublish(EXCHANGE_NAME, "DreamTeamBankJSON", null, message.getBytes());
                    break;
                case "cphbusiness.bankXML":
                    sendingChannel.basicPublish(EXCHANGE_NAME, "CphBusinessXML", null, message.getBytes());
                    break;
                case "cphbusiness.bankJSON":
                    sendingChannel.basicPublish(EXCHANGE_NAME, "CphBusinessJSON", null, message.getBytes());
                    break;

                }
            }
        }
    };

    listeningChannel.basicConsume(QUEUE_NAME, true, consumer);
}

From source file:com.netcore.hsmart.dlrconsumers.DlrConsumer1000.java

/**
 * @param args the command line arguments
 * @throws java.lang.Exception// w ww.  j a v a 2  s.  co m
 */
public static void main(String[] args) throws Exception {

    /**
     * Set properties at runtime
     */
    System.setProperty("dlrconsumer_logfile", "557_dlr_consumer.log");
    AppConstants.loadAppConfig();

    final String queueName = AppConstants.getDlrReceiverQueuePrefix() + GATEWAY_ID;
    final String exchangeName = AppConstants.getDlrReceiverExchangeName();
    final String routingKey = GATEWAY_ID;

    Logger logger = LoggerFactory.getLogger(DlrConsumer1000.class);

    try {

        Connection connection = AppConstants.getRabbitMqObject().newConnection();

        connection.addShutdownListener(new ShutdownListener() {
            @Override
            public void shutdownCompleted(ShutdownSignalException cause) {
                //throw new UnsupportedOperationException("Not supported yet.");
                if (cause.isHardError()) {
                    Connection conn;
                    conn = (Connection) cause.getReference();
                    if (!cause.isInitiatedByApplication()) {
                        Method reason = cause.getReason();
                        logger.info("REASON:" + reason.toString());
                    }

                } else {
                    Channel ch = (Channel) cause.getReference();
                    logger.info("NO HARDSHUTDOWN");
                }
            }
        });

        Channel channel = connection.createChannel();

        channel.exchangeDeclare(exchangeName, "direct");
        channel.queueDeclare(queueName, true, false, false, null);
        channel.queueBind(queueName, exchangeName, routingKey);
        channel.basicQos(1000);
        //channel.addShutdownListener(listener);
        logger.info(" [*] Waiting for messages from gateway " + GATEWAY_ID + ". To exit press CTRL+C");

        Consumer consumer;

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

                Map<String, String> dataToPost = new HashMap<>();
                String payload = new String(body, "UTF-8");

                logger.info("REF_ID:" + dataToPost.get("ref_id") + "|START+++++++++++++++");
                logger.info("REF_ID:" + dataToPost.get("ref_id") + "|PAYLOAD:" + payload);

                String payloadParts[] = payload.split(AppConstants.getPayloadGroupSeparator());

                for (String payloadPart : payloadParts) {
                    String s[] = payloadPart.split(AppConstants.getPayloadKVSeparator());

                    //check if any parameter is empty
                    if (s.length == 2) {
                        dataToPost.put(s[0], s[1]);
                    } else {
                        logger.info("REF_ID:" + dataToPost.get("ref_id") + "|EMPTY_PARAM:" + s[0]);
                        dataToPost.put(s[0], null);
                    }
                }

                long deliveryTag = envelope.getDeliveryTag();

                if (invokeApiCall(dataToPost)) {
                    channel.basicAck(deliveryTag, false);

                } else {
                    channel.basicNack(deliveryTag, false, true);
                }

                /**
                 * release memory
                 */
                logger.info("REF_ID:" + dataToPost.get("ref_id") + "|END-----------------");
                dataToPost.clear();
                payloadParts = null;

            }
        };

        String cTag = channel.basicConsume(queueName, false, consumer);
        logger.info("CONSUMER TAG : " + cTag);

    } catch (IOException | TimeoutException e) {
        logger.error("RMQ_ERROR:" + e.getMessage());
    }
}

From source file:com.netcore.hsmart.dlrreceiverserver.PublishDlr.java

@POST
@Path("post")
@Consumes(MediaType.APPLICATION_FORM_URLENCODED)
public Response processDlrRequestPOST(@DefaultValue(DEFAULT_GATEWAY_ID) @QueryParam("gid") String tempGatewayId,
        @Context HttpServletRequest requestContext, MultivaluedMap<String, String> queryParams)
        throws TimeoutException, IOException {

    Logger logger = LoggerFactory.getLogger(PublishDlr.class);

    logger.info("IP:" + requestContext.getRemoteAddr() + "|METHOD:" + requestContext.getMethod()
            + "|GATEWAY_ID:" + AppConstants.getGatewayIdByCode(tempGatewayId) + "|QUERY_STRING:"
            + queryParams.toString());/* w  ww  . ja v  a 2  s .  c  o m*/

    if (tempGatewayId == null || DEFAULT_GATEWAY_ID.equals(tempGatewayId) || "".equals(tempGatewayId)) { // gateway param in GET is not present

        if (queryParams.containsKey("gid")) {
            tempGatewayId = queryParams.get("gid").get(0);
            logger.info("gid param in POST");
            queryParams.add("gid", tempGatewayId);
        } else {
            queryParams.add("gid", null);
            logger.info("gid paramter missing");
        }
    } else {
        logger.info("gid param in GET");
        queryParams.add("gid", tempGatewayId);
    }

    logger.info("GID: " + tempGatewayId);

    if (queryParams.get("gid") != null
            && Utilities.isValidGateway(AppConstants.getGatewayIdByCode(tempGatewayId))) {

        String gatewayId = AppConstants.getGatewayIdByCode(tempGatewayId);

        // adding gateway stats per hour wise
        AppConstants.getHazelcastClient().getAtomicLong(
                "PUBDLR_GATEWAY_" + gatewayId + "_" + new SimpleDateFormat("yyyy-MM-dd-HH").format(new Date()))
                .incrementAndGet();

        try {

            // adding DLR type too

            PAYLOAD.put("gateway_id", gatewayId);
            PAYLOAD.put("dlr_type", "DLR");

            queryParams.forEach((k, v) -> buildPayload(k, v.get(0)));

            logger.info("PAYLOAD_FOR_MQ:" + PAYLOAD);

            Channel channel = AppConstants.getRabbitMqConnection().createChannel();

            channel.exchangeDeclare(AppConstants.getDlrReceiverExchangeName(), "direct");
            channel.queueDeclare(AppConstants.getDlrReceiverQueuePrefix() + gatewayId, true, false, false,
                    null);
            channel.queueBind(AppConstants.getDlrReceiverQueuePrefix() + gatewayId,
                    AppConstants.getDlrReceiverExchangeName(), gatewayId);
            channel.basicPublish(AppConstants.getDlrReceiverExchangeName(), gatewayId, null,
                    Utilities.encrypt(PAYLOAD.toString()).getBytes());

            channel.close();

            logger.info("PUBLISH_STATUS:SUCCESS");

            return Response.status(200).entity(buildJsonResponse("SUCCESS", "NULL", "NULL").toString()).build();

        } catch (Exception e) {
            logger.error("ERROR:HSMART_PUBDLR_1600");
            logger.error("EXCEPTION:" + e.getMessage());
            logger.info("PUBLISH_STATUS:FAIL");
            return Response.status(AppConstants.getApplicationCodeHttpStatus("HSMART_PUBDLR_1600"))
                    .entity(buildJsonResponse("FAIL", "HSMART_PUBDLR_1600",
                            AppConstants.getApplicationCodeMessage("HSMART_PUBDLR_1600")).toString())
                    .build();

        }

    } else {
        logger.error("ERROR:HSMART_PUBDLR_1001");
        logger.error("ERROR_MSG:" + AppConstants.getApplicationCodeMessage("HSMART_PUBDLR_1001"));
        logger.info("PUBLISH_STATUS:FAIL");
        return Response.status(AppConstants.getApplicationCodeHttpStatus("HSMART_PUBDLR_1001"))
                .entity(buildJsonResponse("fail", "HSMART_PUBDLR_1001",
                        AppConstants.getApplicationCodeMessage("HSMART_PUBDLR_1001")).toString())
                .build();

    }

}

From source file:com.netcore.hsmart.dlrreceiverserver.PublishDlr.java

@GET
@Path("get")
public Response processDlrRequestGET(@DefaultValue(DEFAULT_GATEWAY_ID) @QueryParam("gid") String tempGatewayId,
        @Context HttpServletRequest requestContext) throws TimeoutException, IOException {

    Logger logger = LoggerFactory.getLogger(PublishDlr.class);

    Map<String, String[]> queryParams = requestContext.getParameterMap();

    logger.info("IP:" + requestContext.getRemoteAddr() + "|METHOD:" + requestContext.getMethod()
            + "|QUERY_STRING:" + requestContext.getQueryString());

    logger.info(AppConstants.getGatewayIdByCode(tempGatewayId));

    if (queryParams.get("gid") != null
            && Utilities.isValidGateway(AppConstants.getGatewayIdByCode(tempGatewayId))) {

        String gatewayId = AppConstants.getGatewayIdByCode(tempGatewayId);

        // adding gateway stats per hour wise
        AppConstants.getHazelcastClient().getAtomicLong(
                "PUBDLR_GATEWAY_" + gatewayId + "_" + new SimpleDateFormat("yyyy-MM-dd-HH").format(new Date()))
                .incrementAndGet();/*  w  ww. j  av a 2  s .  com*/

        try {

            // adding DLR type too
            // PAYLOAD = AppConstants.getPayloadGroupSeparator() +
            // "gateway_id" + AppConstants.getPayloadKVSeparator()
            // + gatewayId+AppConstants.getPayloadGroupSeparator() +
            // "dlr_type" + AppConstants.getPayloadKVSeparator()
            // + "DLR";
            PAYLOAD.put("gateway_id", gatewayId);
            PAYLOAD.put("dlr_type", "DLR");

            // queryParams.forEach((k, v) -> buildPayload(k, v));

            Iterator i = queryParams.keySet().iterator();

            while (i.hasNext()) {

                String key = (String) i.next();
                String value = ((String[]) queryParams.get(key))[0];
                buildPayload(key, value);

            }

            logger.info("PAYLOAD_FOR_MQ:" + PAYLOAD);

            Channel channel = AppConstants.getRabbitMqConnection().createChannel();

            channel.exchangeDeclare(AppConstants.getDlrReceiverExchangeName(), "direct");
            channel.queueDeclare(AppConstants.getDlrReceiverQueuePrefix() + gatewayId, true, false, false,
                    null);
            channel.queueBind(AppConstants.getDlrReceiverQueuePrefix() + gatewayId,
                    AppConstants.getDlrReceiverExchangeName(), gatewayId);
            channel.basicPublish(AppConstants.getDlrReceiverExchangeName(), gatewayId, null,
                    Utilities.encrypt(PAYLOAD.toString()).getBytes());

            channel.close();

            logger.info("PUBLISH_STATUS:SUCCESS");

            return Response.status(200).entity(buildJsonResponse("SUCCESS", "NULL", "NULL").toString()).build();

        } catch (Exception e) {
            logger.error("ERROR:HSMART_PUBDLR_1600");
            logger.error("EXCEPTION:" + e.getMessage());
            logger.info("PUBLISH_STATUS:FAIL");
            return Response.status(AppConstants.getApplicationCodeHttpStatus("HSMART_PUBDLR_1600"))
                    .entity(buildJsonResponse("FAIL", "HSMART_PUBDLR_1600",
                            AppConstants.getApplicationCodeMessage("HSMART_PUBDLR_1600")).toString())
                    .build();

        }

    } else {
        logger.error("ERROR:HSMART_PUBDLR_1001");
        logger.error("ERROR_MSG:" + AppConstants.getApplicationCodeMessage("HSMART_PUBDLR_1001"));
        logger.info("PUBLISH_STATUS:FAIL");
        return Response.status(AppConstants.getApplicationCodeHttpStatus("HSMART_PUBDLR_1001"))
                .entity(buildJsonResponse("fail", "HSMART_PUBDLR_1001",
                        AppConstants.getApplicationCodeMessage("HSMART_PUBDLR_1001")).toString())
                .build();

    }

}

From source file:com.netcore.hsmart.smsconsumers.SmsConsumer1000.java

/**
 * @param args the command line arguments
 * @throws java.lang.Exception/*from ww  w .j ava2 s  .  c o m*/
 */
public static void main(String[] args) throws Exception {

    /**
     * Set properties at runtime
     */
    System.setProperty("smsconsumer_logfile", GATEWAY_ID + "_sms_consumer.log");
    AppConstants.loadAppConfig();

    final String queueName = AppConstants.getSmsReceiverQueuePrefix() + GATEWAY_ID;
    final String exchangeName = AppConstants.getSmsReceiverExchangeName();
    final String routingKey = GATEWAY_ID;

    Logger logger = LoggerFactory.getLogger(SmsConsumer1000.class);

    try {

        Connection connection = AppConstants.getRabbitMqObject().newConnection();

        connection.addShutdownListener(new ShutdownListener() {
            @Override
            public void shutdownCompleted(ShutdownSignalException cause) {
                //throw new UnsupportedOperationException("Not supported yet.");
                if (cause.isHardError()) {
                    Connection conn;
                    conn = (Connection) cause.getReference();
                    if (!cause.isInitiatedByApplication()) {
                        Method reason = cause.getReason();
                        logger.info("REASON:" + reason.toString());
                    }

                } else {
                    Channel ch = (Channel) cause.getReference();
                    logger.info("NO HARDSHUTDOWN");
                }
            }
        });

        Channel channel = connection.createChannel();

        channel.exchangeDeclare(exchangeName, "direct");
        channel.queueDeclare(queueName, true, false, false, null);
        channel.queueBind(queueName, exchangeName, routingKey);
        channel.basicQos(1000);
        //channel.addShutdownListener(listener);
        logger.info(" [*] Waiting for messages from gateway " + GATEWAY_ID + ". To exit press CTRL+C");

        Consumer consumer;

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

                Map<String, String> dataToPost = new HashMap<>();
                String payload = new String(body, "UTF-8");

                String payloadParts[] = payload.split(AppConstants.getPayloadGroupSeparator());

                for (String payloadPart : payloadParts) {
                    String s[] = payloadPart.split(AppConstants.getPayloadKVSeparator());
                    dataToPost.put(s[0], s[1]);
                }
                logger.info("REF_ID:" + dataToPost.get("ref_id") + "|START+++++++++++++++");
                logger.info("REF_ID:" + dataToPost.get("ref_id") + "|PAYLOAD:" + payload);

                long deliveryTag = envelope.getDeliveryTag();

                if (invokeApiCall(dataToPost)) {
                    if (saveRequestData()) {

                        channel.basicAck(deliveryTag, false);
                    } else {
                        channel.basicNack(deliveryTag, false, true);
                    }

                } else {
                    channel.basicNack(deliveryTag, false, true);
                }

                /**
                 * release memory
                 */
                logger.info("REF_ID:" + dataToPost.get("ref_id") + "|END-----------------");
                API_CALL_STATS.clear();
                dataToPost.clear();
                payloadParts = null;

            }
        };

        String cTag = channel.basicConsume(queueName, false, consumer);
        logger.info("CONSUMER TAG : " + cTag);

    } catch (IOException | TimeoutException e) {
        logger.error("RMQ_ERROR:" + e.getMessage());
    }
}