Example usage for com.rabbitmq.client Channel basicGet

Introduction

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

Prototype

GetResponse basicGet(String queue, boolean autoAck) throws IOException;

Source Link

Document

Retrieve a message from a queue using com.rabbitmq.client.AMQP.Basic.Get

Usage

From source file:com.github.kislayverma.dredd.action.async.amqp.AmqpActionQueue.java

License:Apache License

@Override
public AsyncExecutionRequest getTask() throws AsyncTaskConsumptionException {
    try {// ww  w .j ava  2 s .  co  m
        Connection connection = factory.newConnection();
        Channel channel = connection.createChannel();
        GetResponse response = channel.basicGet(this.queue, false);
        if (response != null) {
            AsyncExecutionRequest message = deserialize(response.getBody());

            long deliveryTag = response.getEnvelope().getDeliveryTag();
            channel.basicAck(deliveryTag, true);

            return message;
        }
    } catch (IOException | TimeoutException | ClassNotFoundException ex) {
        LOGGER.error("Failed to read message from the queue", ex);
        throw new AsyncTaskConsumptionException();
    }

    return null; // Won't ever reach here
}

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From source file:com.kurento.kmf.rabbitmq.RabbitTemplate.java

License:Apache License

@Override
public Message receive(final String queueName) {
    return execute(new ChannelCallback<Message>() {

        @Override//from   w  w w  .j  a v a2 s  .co m
        public Message doInRabbit(Channel channel) throws IOException {
            GetResponse response = channel.basicGet(queueName, !isChannelTransacted());
            // Response can be null is the case that there is no message on
            // the queue.
            if (response != null) {
                long deliveryTag = response.getEnvelope().getDeliveryTag();
                if (isChannelLocallyTransacted(channel)) {
                    channel.basicAck(deliveryTag, false);
                    channel.txCommit();
                } else if (isChannelTransacted()) {
                    // Not locally transacted but it is transacted so it
                    // could be synchronized with an external transaction
                    ConnectionFactoryUtils.registerDeliveryTag(getConnectionFactory(), channel, deliveryTag);
                }

                return RabbitTemplate.this.buildMessageFromResponse(response);
            }
            return null;
        }
    });
}

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From source file:com.kurento.kmf.rabbitmq.RabbitTemplate.java

License:Apache License

@SuppressWarnings("unchecked")
private <R, S> boolean doReceiveAndReply(final String queueName, final ReceiveAndReplyCallback<R, S> callback,
        final ReplyToAddressCallback<S> replyToAddressCallback) throws AmqpException {
    return this.execute(new ChannelCallback<Boolean>() {

        @Override/*from w w  w  .  j a  v  a2  s .c o m*/
        public Boolean doInRabbit(Channel channel) throws Exception {
            boolean channelTransacted = RabbitTemplate.this.isChannelTransacted();

            GetResponse response = channel.basicGet(queueName, !channelTransacted);
            // Response can be null in the case that there is no message on
            // the queue.
            if (response != null) {
                long deliveryTag = response.getEnvelope().getDeliveryTag();
                boolean channelLocallyTransacted = RabbitTemplate.this.isChannelLocallyTransacted(channel);

                if (channelLocallyTransacted) {
                    channel.basicAck(deliveryTag, false);
                } else if (channelTransacted) {
                    // Not locally transacted but it is transacted so it
                    // could be synchronized with an external transaction
                    ConnectionFactoryUtils.registerDeliveryTag(RabbitTemplate.this.getConnectionFactory(),
                            channel, deliveryTag);
                }

                Message receiveMessage = RabbitTemplate.this.buildMessageFromResponse(response);

                Object receive = receiveMessage;
                if (!(ReceiveAndReplyMessageCallback.class.isAssignableFrom(callback.getClass()))) {
                    receive = RabbitTemplate.this.getRequiredMessageConverter().fromMessage(receiveMessage);
                }

                S reply;
                try {
                    reply = callback.handle((R) receive);
                } catch (ClassCastException e) {
                    StackTraceElement[] trace = e.getStackTrace();
                    if (trace[0].getMethodName().equals("handle")
                            && trace[1].getFileName().equals("RabbitTemplate.java")) {
                        throw new IllegalArgumentException("ReceiveAndReplyCallback '" + callback
                                + "' can't handle received object '" + receive + "'", e);
                    } else {
                        throw e;
                    }
                }

                if (reply != null) {
                    Address replyTo = replyToAddressCallback.getReplyToAddress(receiveMessage, reply);

                    Message replyMessage = RabbitTemplate.this.convertMessageIfNecessary(reply);

                    MessageProperties receiveMessageProperties = receiveMessage.getMessageProperties();
                    MessageProperties replyMessageProperties = replyMessage.getMessageProperties();

                    Object correlation = RabbitTemplate.this.correlationKey == null
                            ? receiveMessageProperties.getCorrelationId()
                            : receiveMessageProperties.getHeaders().get(RabbitTemplate.this.correlationKey);

                    if (RabbitTemplate.this.correlationKey == null || correlation == null) {
                        // using standard correlationId property
                        if (correlation == null) {
                            String messageId = receiveMessageProperties.getMessageId();
                            if (messageId != null) {
                                correlation = messageId.getBytes(RabbitTemplate.this.encoding);
                            }
                        }
                        replyMessageProperties.setCorrelationId((byte[]) correlation);
                    } else {
                        replyMessageProperties.setHeader(RabbitTemplate.this.correlationKey, correlation);
                    }

                    // 'doSend()' takes care about 'channel.txCommit()'.
                    RabbitTemplate.this.doSend(channel, replyTo.getExchangeName(), replyTo.getRoutingKey(),
                            replyMessage, null);
                } else if (channelLocallyTransacted) {
                    channel.txCommit();
                }

                return true;
            }
            return false;
        }
    });
}

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From source file:joram.amqp.PersistenceSimpleTest.java

License:Open Source License

public void recover1() throws Exception {
    ConnectionFactory cnxFactory = new ConnectionFactory();
    Connection connection = cnxFactory.newConnection();

    Channel channel = connection.createChannel();
    DeclareOk declareOk = channel.queueDeclare("testqueue", true, false, false, null);

    channel.txSelect();//from ww w. j ava2s . co  m
    for (int i = 0; i < 5; i++) {
        channel.basicPublish("", declareOk.getQueue(), MessageProperties.PERSISTENT_BASIC,
                "this is a test message !!!".getBytes());
    }
    channel.txCommit();

    killAgentServer((short) 0);

    startAgentServer((short) 0);

    connection = cnxFactory.newConnection();
    channel = connection.createChannel();
    declareOk = channel.queueDeclarePassive("testqueue");

    for (int i = 0; i < 5; i++) {
        GetResponse msg = channel.basicGet("testqueue", true);
        assertNotNull(msg);
        assertEquals("this is a test message !!!", new String(msg.getBody()));
    }

    GetResponse msg = channel.basicGet("testqueue", true);
    assertNull(msg);

    channel.queueDelete(declareOk.getQueue());
}

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From source file:net.nzcorp.hbase.tableevent_signaler.TableEventSignalerTest.java

License:Apache License

@Test
public void prePutHappyCase() throws Exception {

    Map<String, String> kvs = configureHBase(primaryTableNameString, secondaryIdxTableNameString, "e", "eg",
            "a", amq_default_address, primaryTableNameString, "true", "");
    setupHBase(kvs);/*from   ww w  . ja  va2s. c om*/

    //simulate population of secondary index as a result of the above
    Put idxPut = new Put("EFG1".getBytes());
    idxPut.addColumn("a".getBytes(), "EFB1".getBytes(), "".getBytes());
    secondaryIdxTable.put(idxPut);

    // Add a column to the primary table, which should trigger a data ripple to the downstream table
    Put tablePut = new Put("EFG1".getBytes());
    tablePut.addColumn("e".getBytes(), "some_key".getBytes(), "some_value".getBytes());
    primaryTable.put(tablePut);

    //check that values made it to the queue
    com.rabbitmq.client.ConnectionFactory factory = new com.rabbitmq.client.ConnectionFactory();
    factory.setUri(amq_default_address);
    com.rabbitmq.client.Connection conn = factory.newConnection();
    com.rabbitmq.client.Channel channel = conn.createChannel();
    System.out.println(String.format("Test: connecting to %s", primaryTableNameString));

    while (true) {
        GetResponse response = channel.basicGet(primaryTableNameString, false);
        if (response == null)//busy-wait until the message has made it through the MQ
        {
            continue;
        }
        String routingKey = response.getEnvelope().getRoutingKey();
        Assert.assertEquals("Routing key should be rowkey", "genome", routingKey);

        String contentType = response.getProps().getContentType();
        Assert.assertEquals("Content type should be preserved", "application/json", contentType);

        Map<String, Object> headers = response.getProps().getHeaders();
        Assert.assertEquals("An action should be set on the message", "put", headers.get("action").toString());

        byte[] body = response.getBody();

        JSONObject jo = new JSONObject(new String(body));
        String column_family = (String) jo.get("column_family");
        Assert.assertEquals("Column family should be preserved in the message body", "eg", column_family);

        String column_value = (String) jo.get("column_value");
        Assert.assertEquals("Column value should be preserved in the message body", "some_value", column_value);

        long deliveryTag = response.getEnvelope().getDeliveryTag();
        channel.basicAck(deliveryTag, false);
        break;
    }
}

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From source file:net.nzcorp.hbase.tableevent_signaler.TableEventSignalerTest.java

License:Apache License

@Test
public void verifyValueNotSentByDefault() throws Exception {

    Map<String, String> kvs = configureHBase(primaryTableNameString, secondaryIdxTableNameString, "e", "eg",
            "a", amq_default_address, primaryTableNameString, "false", "");
    setupHBase(kvs);/*from  w ww  .  j  av  a 2 s.c  o m*/

    //simulate population of secondary index as a result of the above
    Put idxPut = new Put("EFG1".getBytes());
    idxPut.addColumn("a".getBytes(), "EFB1".getBytes(), "".getBytes());
    secondaryIdxTable.put(idxPut);

    // Add a column to the primary table, which should trigger a data ripple to the downstream table
    Put tablePut = new Put("EFG1".getBytes());
    tablePut.addColumn("e".getBytes(), "some_key".getBytes(), "some_value".getBytes());
    primaryTable.put(tablePut);

    //check that values made it to the queue
    com.rabbitmq.client.ConnectionFactory factory = new com.rabbitmq.client.ConnectionFactory();
    factory.setUri(amq_default_address);
    com.rabbitmq.client.Connection conn = factory.newConnection();
    com.rabbitmq.client.Channel channel = conn.createChannel();
    System.out.println(String.format("Test: connecting to %s", primaryTableNameString));

    while (true) {
        GetResponse response = channel.basicGet(primaryTableNameString, false);
        if (response == null)//busy-wait until the message has made it through the MQ
        {
            continue;
        }
        String routingKey = response.getEnvelope().getRoutingKey();
        Assert.assertEquals("Routing key should be rowkey", "genome", routingKey);

        String contentType = response.getProps().getContentType();
        Assert.assertEquals("Content type should be preserved", "application/json", contentType);

        Map<String, Object> headers = response.getProps().getHeaders();
        Assert.assertEquals("An action should be set on the message", "put", headers.get("action").toString());

        byte[] body = response.getBody();

        JSONObject jo = new JSONObject(new String(body));
        String column_family = (String) jo.get("column_family");
        Assert.assertEquals("Column family should be preserved in the message body", "eg", column_family);

        String column_value = (String) jo.get("column_value");
        Assert.assertEquals("Column value is not sent by default", "", column_value);

        long deliveryTag = response.getEnvelope().getDeliveryTag();
        channel.basicAck(deliveryTag, false);
        break;
    }
}

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From source file:net.nzcorp.hbase.tableevent_signaler.TableEventSignalerTest.java

License:Apache License

@Test
public void filterOnQualifiers() throws Exception {

    Map<String, String> kvs = configureHBase(primaryTableNameString, secondaryIdxTableNameString, "e", "eg",
            "a", amq_default_address, primaryTableNameString, "false", "one_key|some_key");
    setupHBase(kvs);//  w w w . j a va2  s  .  c  o m

    //simulate population of secondary index as a result of the above
    Put idxPut = new Put("EFG1".getBytes());
    idxPut.addColumn("a".getBytes(), "EFB1".getBytes(), "".getBytes());
    secondaryIdxTable.put(idxPut);

    // Add a column to the primary table, which should trigger a data ripple to the downstream table
    Put tablePut = new Put("EFG1".getBytes());
    tablePut.addColumn("e".getBytes(), "some_key".getBytes(), "some_value".getBytes());
    primaryTable.put(tablePut);

    //check that values made it to the queue
    com.rabbitmq.client.ConnectionFactory factory = new com.rabbitmq.client.ConnectionFactory();
    factory.setUri(amq_default_address);
    com.rabbitmq.client.Connection conn = factory.newConnection();
    com.rabbitmq.client.Channel channel = conn.createChannel();
    System.out.println(String.format("Test: connecting to %s", primaryTableNameString));

    while (true) {
        GetResponse response = channel.basicGet(primaryTableNameString, false);
        if (response == null)//busy-wait until the message has made it through the MQ
        {
            continue;
        }
        String routingKey = response.getEnvelope().getRoutingKey();
        Assert.assertEquals("Routing key should be rowkey", "genome", routingKey);

        String contentType = response.getProps().getContentType();
        Assert.assertEquals("Content type should be preserved", "application/json", contentType);

        Map<String, Object> headers = response.getProps().getHeaders();
        Assert.assertEquals("An action should be set on the message", "put", headers.get("action").toString());

        byte[] body = response.getBody();

        JSONObject jo = new JSONObject(new String(body));
        String column_family = (String) jo.get("column_family");
        Assert.assertEquals("Column family should be preserved in the message body", "eg", column_family);

        String column_value = (String) jo.get("column_value");
        Assert.assertEquals("Column value is not sent by default", "", column_value);

        long deliveryTag = response.getEnvelope().getDeliveryTag();
        channel.basicAck(deliveryTag, false);
        break;
    }
}

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From source file:net.nzcorp.hbase.tableevent_signaler.TableEventSignalerTest.java

License:Apache License

@Test
public void onlyPutWhenInQualifierFilter() throws Exception {

    Map<String, String> kvs = configureHBase(primaryTableNameString, secondaryIdxTableNameString, "e", "eg",
            "a", amq_default_address, primaryTableNameString, "false", "some_key");
    setupHBase(kvs);//from   ww w .  java  2 s.c  om

    //simulate population of secondary index as a result of the above
    Put idxPut = new Put("EFG1".getBytes());
    idxPut.addColumn("a".getBytes(), "EFB1".getBytes(), "".getBytes());
    secondaryIdxTable.put(idxPut);

    // Add a column to the primary table, which should trigger a data ripple to the downstream table
    Put tablePut = new Put("EFG1".getBytes());
    tablePut.addColumn("e".getBytes(), "some_key".getBytes(), "some_value".getBytes());
    tablePut.addColumn("e".getBytes(), "other_key".getBytes(), "some_value".getBytes());
    tablePut.addColumn("e".getBytes(), "third_key".getBytes(), "some_value".getBytes());
    primaryTable.put(tablePut);

    //check that values made it to the queue
    com.rabbitmq.client.ConnectionFactory factory = new com.rabbitmq.client.ConnectionFactory();
    factory.setUri(amq_default_address);
    com.rabbitmq.client.Connection conn = factory.newConnection();
    com.rabbitmq.client.Channel channel = conn.createChannel();
    System.out.println(String.format("Test: connecting to %s", primaryTableNameString));

    while (true) {
        int numMessages = channel.queueDeclarePassive(primaryTableNameString).getMessageCount();
        GetResponse response = channel.basicGet(primaryTableNameString, false);
        if (response == null || numMessages == 0)//busy-wait until the message has made it through the MQ
        {
            continue;
        }
        Assert.assertEquals("There should be only a single key in the queue", 1, numMessages);
        String routingKey = response.getEnvelope().getRoutingKey();
        Assert.assertEquals("Routing key should be rowkey", "genome", routingKey);

        String contentType = response.getProps().getContentType();
        Assert.assertEquals("Content type should be preserved", "application/json", contentType);

        Map<String, Object> headers = response.getProps().getHeaders();
        Assert.assertEquals("An action should be set on the message", "put", headers.get("action").toString());

        byte[] body = response.getBody();

        JSONObject jo = new JSONObject(new String(body));
        String column_family = (String) jo.get("column_family");
        Assert.assertEquals("Column family should be preserved in the message body", "eg", column_family);

        String column_value = (String) jo.get("column_value");
        Assert.assertEquals("Column value is not sent by default", "", column_value);

        long deliveryTag = response.getEnvelope().getDeliveryTag();
        channel.basicAck(deliveryTag, false);
        break;
    }
}

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From source file:net.nzcorp.hbase.tableevent_signaler.TableEventSignalerTest.java

License:Apache License

@Test
public void preDeleteHappyCase() throws Exception {

    Map<String, String> kvs = configureHBase(primaryTableNameString, secondaryIdxTableNameString, "e", "eg",
            "a", amq_default_address, primaryTableNameString, "true", "");
    setupHBase(kvs);/*from   w  w  w . j av  a 2  s  .c o m*/
    com.rabbitmq.client.ConnectionFactory factory = new com.rabbitmq.client.ConnectionFactory();
    factory.setUri(amq_default_address);
    com.rabbitmq.client.Connection conn = factory.newConnection();
    com.rabbitmq.client.Channel channel = conn.createChannel();

    //simulate population of secondary index for a put on the downstreamTable
    Put idxPut = new Put("EFG1".getBytes());
    idxPut.addColumn("a".getBytes(), "EFB1".getBytes(), "".getBytes());
    secondaryIdxTable.put(idxPut);

    //simulate a data rippling performed by the data_rippler service consuming off of the rabbitmq queue
    Put tablePut = new Put("EFB1".getBytes());
    tablePut.addColumn("eg".getBytes(), "some_key".getBytes(), "some_value".getBytes());
    downstreamTable.put(tablePut);

    // since we made no active put to the queue from the prePut, we need to declare it explicitly here
    channel.queueDeclare(primaryTableNameString, true, false, false, null);

    // finished with the setup, we now issue a delete which should be caught by the rabbitmq
    Delete d = new Delete("EFG1".getBytes());
    primaryTable.delete(d);

    //check that values made it to the queue
    while (true) {
        GetResponse response = channel.basicGet(primaryTableNameString, false);
        if (response == null)//busy-wait until the message has made it through the MQ
        {
            continue;
        }
        String routingKey = response.getEnvelope().getRoutingKey();
        Assert.assertEquals("Routing key should be rowkey", "genome", routingKey);

        String contentType = response.getProps().getContentType();
        Assert.assertEquals("Content type should be preserved", "application/json", contentType);

        Map<String, Object> headers = response.getProps().getHeaders();
        Assert.assertEquals("An action should be set on the message", "delete",
                headers.get("action").toString());

        byte[] body = response.getBody();
        JSONObject jo = new JSONObject(new String(body));

        String column_qualifier = (String) jo.get("column_qualifier");
        Assert.assertEquals("Column qualifier should be empty, signalling a row delete", "", column_qualifier);

        long deliveryTag = response.getEnvelope().getDeliveryTag();
        channel.basicAck(deliveryTag, false);
        break;
    }
}

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From source file:net.nzcorp.hbase.tableevent_signaler.TableEventSignalerTest.java

License:Apache License

@Test
public void discernNewPutFromUpdate() throws Exception {
    Map<String, String> kvs = configureHBase(primaryTableNameString, secondaryIdxTableNameString, "e", "eg",
            "a", amq_default_address, primaryTableNameString, "true", "");
    setupHBase(kvs);// ww  w  .j  a v a  2s  .com

    //simulate population of secondary index as a result of the above
    Put idxPut = new Put("EFG1".getBytes());
    idxPut.addColumn("a".getBytes(), "EFB1".getBytes(), "".getBytes());
    secondaryIdxTable.put(idxPut);

    /*
    The first put should be registered as a "put" action, while the second should be registered as an "update"
    action, thereby signalling different action to be taken by the consumers
     */

    Put tablePut = new Put("EFG1".getBytes());
    tablePut.addColumn("e".getBytes(), "some_key".getBytes(), "some_value".getBytes());
    primaryTable.put(tablePut);

    tablePut = new Put("EFG1".getBytes());
    tablePut.addColumn("e".getBytes(), "some_other_key".getBytes(), "some_value".getBytes());
    primaryTable.put(tablePut);

    //check that values made it to the queue
    com.rabbitmq.client.ConnectionFactory factory = new com.rabbitmq.client.ConnectionFactory();
    factory.setUri(amq_default_address);
    com.rabbitmq.client.Connection conn = factory.newConnection();
    com.rabbitmq.client.Channel channel = conn.createChannel();
    int msgs_to_consume = 2;
    while (msgs_to_consume > 0) {
        System.out.println(String.format("Messages to get: %s", msgs_to_consume));
        GetResponse response = channel.basicGet(primaryTableNameString, false);
        if (response == null)//busy-wait until the message has made it through the MQ
        {
            continue;
        }
        String routingKey = response.getEnvelope().getRoutingKey();
        Assert.assertEquals("Routing key should be rowkey", "genome", routingKey);

        String contentType = response.getProps().getContentType();
        Assert.assertEquals("Content type should be preserved", "application/json", contentType);

        Map<String, Object> headers = response.getProps().getHeaders();
        byte[] body = response.getBody();

        JSONObject jo = new JSONObject(new String(body));
        String column_family = (String) jo.get("column_family");
        Assert.assertEquals("Column family should be preserved in the message body", "eg", column_family);

        String column_value = (String) jo.get("column_qualifier");

        if (headers.get("action").toString().equals("update")) {
            Assert.assertEquals("Column value should be preserved in the message body", "some_other_key",
                    column_value);
        } else {
            Assert.assertEquals("Column value should be preserved in the message body", "some_key",
                    column_value);
        }

        long deliveryTag = response.getEnvelope().getDeliveryTag();
        channel.basicAck(deliveryTag, false);
        msgs_to_consume--;
    }
}

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