What RabbitMQCan Do For You

James TitcumbPHPNW14 Unconference

James Titcumbwww.jamestitcumb.comwww.protected.co.ukwww.phphants.co.uk@asgrim

Who is this guy?

What is message queueing?

Separation of Concerns

Scaling with Rabbit

RabbitMQApplication

Background processing

Scaling with Rabbit

RabbitMQApplication

Background processing

Background processing

Scaling with Rabbit

RabbitMQApplication

Background processing

Background processing

Background processing

Scaling with Rabbit

RabbitMQApplication

Background processing

Background processing

Background processing

Background processing

Scaling with Rabbit

RabbitMQApplication

Background processing

Background processing

Background processing

Background processing

Background processing

Some real world uses?

(on precise64, other OSs may vary)

Installing RabbitMQ

● add apt repo○ deb http://www.rabbitmq.com/debian/ testing main

● add signing key○ http://www.rabbitmq.com/rabbitmq-signing-key-public.asc

● apt-get update● apt-get install rabbitmq-server● rabbitmq-plugins enable rabbitmq_management● sudo service rabbitmq-server restart

Using Apt

Basic Message Queuing

Objective: Basic Queuing

Producer Consumer

test_queue

1 2 3 4 5

composer.json{

"require": {

"videlalvaro/php-amqplib": "2.*"

}

}

then composer install

Please wait, connecting...use PhpAmqpLib\Connection\AMQPConnection;

$connection = new AMQPConnection(

'localhost',

5672,

'guest',

'guest',

'/'

);

$channel = $connection->channel();

basic/producer.phpuse PhpAmqpLib\Message\AMQPMessage;

$channel->queue_declare(

'test_queue',

false,

true,

false, false);

$message = new AMQPMessage('my test message');

$channel->basic_publish($message, '', 'test_queue');

basic/consumer.php$channel->basic_consume(

'test_queue', // Queue to consume

'', // Consumer identifier

false,

true, // No-ack means messages are "auto acknowledged"

false, // Exclusive - no other consumers can use the queue

false,

function(AMQPMessage $message) {

echo $message->body . "\n";

}

);

while (count($channel->callbacks)) {

$channel->wait();

}

What to expect...

Exchanges: Fanout

Objective: Fanout Exchange

test_exchange

amq.KfgPZ3PE

amq.cK5Cp3FC

Consumer

Consumer

Producer

1

1

2

2

3

3

4

4

5

5

fanout/producer.phpuse PhpAmqpLib\Message\AMQPMessage;

$channel->exchange_declare(

'test_exchange',

'fanout',

false, false, false);

$message = new AMQPMessage('my test message #' . $id);

$channel->basic_publish($message, 'test_exchange');

fanout/consumer.php$q = $channel->queue_declare(

'', // Lets RabbitMQ pick a name for queue

false, false, false,

true // Delete this queue

);

$queue_name = $q[0];

$channel->exchange_declare(

'test_exchange', 'fanout', false, false, false);

$channel->queue_bind($queue_name, 'test_exchange');

Temporary Queues

test_exchangeProducerMessages

go nowhere

Exchanges: Direct

Objective: Direct Exchange

test_direct

BK = apple

BK = banana, apple

Consumer

Consumer

Producer

BK = orange, banana, apple

Consumer

Objective: Direct Exchange

test_direct

BK = apple

BK = banana, apple

Consumer

Consumer

Producer

MESSAGEROUTING KEY= ORANGE

BK = orange, banana, apple

Consumer

Objective: Direct Exchange

test_direct

BK = apple

BK = banana, apple

Consumer

Consumer

Producer

MESSAGEROUTING KEY= BANANA

BK = orange, banana, apple

Consumer

Objective: Direct Exchange

test_direct

BK = apple

BK = banana, apple

Consumer

Consumer

Producer

MESSAGEROUTING KEY= APPLE

BK = orange, banana, apple

Consumer

direct/producer.php$channel->exchange_declare(

'test_direct', 'fanout', false, false, false);

$messageContent = 'my test message, key=' . $routingKey;

$message = new AMQPMessage($messageContent);

$channel->basic_publish($message, 'test_direct', $routingKey);

direct/consumer.php$q = $channel->queue_declare('', false, false, false, true);

$queue_name = $q[0];

$channel->exchange_declare(

'test_direct', 'direct', false, false, false);

// Bind for each routing key we want (BINDING KEY)

$channel->queue_bind($queue_name, 'test_direct', 'apple');

$channel->queue_bind($queue_name, 'test_direct', 'orange');

$channel->queue_bind($queue_name, 'test_direct', 'banana');

Exchanges: Topic

Objective:Topic Exchange

test_topic

BK = *.vegetable

BK = #

Consumer

Consumer

ProducerBK = green.#

Consumer

BK = *.grass.* / *.*.long

Consumer

Objective:Topic Exchange

test_topic

BK = *.vegetable

BK = #

Consumer

Consumer

Producer

RED.VEGETABLE

BK = green.#

Consumer

BK = *.grass.* / *.*.long

Consumer

Objective:Topic Exchange

test_topic

BK = *.vegetable

BK = #

Consumer

Consumer

Producer

GREEN.VEGETABLE

BK = green.#

Consumer

BK = *.grass.* / *.*.long

Consumer

Objective:Topic Exchange

test_topic

BK = *.vegetable

BK = #

Consumer

Consumer

Producer

GREEN.GRASS.LONG

BK = green.#

Consumer

BK = *.grass.* / *.*.long

Consumer

https://github.com/asgrim/rmq-slides

Have a go yourself!

Questions?

James Titcumb@asgrim

Thanks for watching!