PHP, RabbitMQ, and You talk given at MidwestPHP 2014 Video of the screens can be found here http://www.youtube.com/watch?v=Nh5oFSXEg6k This includes the videos of the sample code.

1. PHP, RabbitMQ, and You
#mwphp14 #rabbitmq @jasonlotito
MidwestPHP 2014 - RabbitMQ
What will we be covering?
1. What is RabbitMQ
2. Technology Overview
3. Publishers
4. Consumers
5. Exchanges
6. Queues
7. Bindings
8. Carrot to make things easy
9. Publish events from the web
10.Multiple consumers
11.Management UI Publishing
12.Consumers Publishing

2. PHP, RabbitMQ, and You
#mwphp14 #rabbitmq @jasonlotito

3. Jason Lotito
Senior Architect @ MeetMe
@jasonlotito.com
github.com/jasonlotito@gmail.com
!
Senior Architect means people can blame
me when things don’t work as expected.
When things work, it’s because they
worked around my code.

4. Who has worked with
RabbitMQ in production?
Raise your hands. The only audience participation part, I promise.

5. Part 1
Crash Course In RabbitMQ
1. What is RabbitMQ
2. Technology Overview
3. Publishers
4. Consumers
5. Exchanges
6. Queues
7. Bindings

6. – RabbitMQ In Action*, Manning
“RabbitMQ is an open source message broker
and queueing server that can be used to let
disparate applications share data via a common
protocol, or to simply queue jobs for processing
by distributed workers.
”

7. Where RabbitMQ Sits
(P) Producer/Publisher - (X) Exchange - (C) Consumer

8. Event Occurs in Application
(P) Producer/Publisher - (X) Exchange - (C) Consumer

9. Message is Sent to Exchange
(P) Producer/Publisher - (X) Exchange - (C) Consumer

10. Message is Sent to Queue
(P) Producer/Publisher - (X) Exchange - (C) Consumer
Exchanges connect to Queues through Bindings

11. Message is Sent to Consumer
(P) Producer/Publisher - (X) Exchange - (C) Consumer

12. – Me, Now
“Where as a database handles your data,
a message queue handles your events.”

13. A database handles nouns.
A message queue handles verbs.

14. But enough talk
Let’s see some code!

15. composer.json
"require": {
"videlalvaro/php-amqplib": "2.2.*"
}

16. We are starting with the publisher

17. Publisher: send.php
<?php
// Setup, $ php send.php whatever you want to send
require_once 'vendor/autoload.php';
$config = require('config.php');
use PhpAmqpLibConnectionAMQPConnection;
use PhpAmqpLibMessageAMQPMessage;
// Message Prep
$connection = new AMQPConnection($config['mq']['host'],
$config['mq']['port'],
$config['mq']['user'],
$config['mq']['pass']);
$channel = $connection->channel();
$message = join(' ', array_splice($argv, 1));
$message = empty($message) ? 'Hello world!' : $message;
// Publish Message
$channel->basic_publish(new AMQPMessage( $message ), '', 'hello');
echo " [x] Sent '$message'n";
$channel->close();
$connection->close();

18. Publisher: send.php
<?php
// Setup, $ php send.php whatever you want to send
require_once 'vendor/autoload.php';
$config = require('config.php');
use PhpAmqpLibConnectionAMQPConnection;
use PhpAmqpLibMessageAMQPMessage;
// Message Prep
$connection = new AMQPConnection($config['mq']['host'],
$config['mq']['port'],
$config['mq']['user'],
$config['mq']['pass']);
$channel = $connection->channel();
$message = join(' ', array_splice($argv, 1));
$message = empty($message) ? 'Hello world!' : $message;
// Publish Message
$channel->basic_publish(new AMQPMessage( $message ), '', 'hello');
echo " [x] Sent '$message'n";
$channel->close();
$connection->close();

19. Publisher: send.php
<?php
// Setup, $ php send.php whatever you want to send
require_once 'vendor/autoload.php';
$config = require('config.php');
use PhpAmqpLibConnectionAMQPConnection;
use PhpAmqpLibMessageAMQPMessage;
// Message Prep
$connection = new AMQPConnection($config['mq']['host'],
$config['mq']['port'],
$config['mq']['user'],
$config['mq']['pass']);
$channel = $connection->channel();
$message = join(' ', array_splice($argv, 1));
$message = empty($message) ? 'Hello world!' : $message;
// Publish Message
$channel->basic_publish(new AMQPMessage( $message ), '', 'hello');
echo " [x] Sent '$message'n";
$channel->close();
$connection->close();

20. Publisher: send.php
<?php
// Setup, $ php send.php whatever you want to send
require_once 'vendor/autoload.php';
$config = require('config.php');
use PhpAmqpLibConnectionAMQPConnection;
use PhpAmqpLibMessageAMQPMessage;
// Message Prep
$connection = new AMQPConnection($config['mq']['host'],
$config['mq']['port'],
$config['mq']['user'],
$config['mq']['pass']);
$channel = $connection->channel();
$message = join(' ', array_splice($argv, 1));
$message = empty($message) ? 'Hello world!' : $message;
// Publish Message
$channel->basic_publish(new AMQPMessage( $message ), '', 'hello');
echo " [x] Sent '$message'n";
$channel->close();
$connection->close();

21. Publisher: send.php
<?php
// Setup, $ php send.php whatever you want to send
require_once 'vendor/autoload.php';
$config = require('config.php');
use PhpAmqpLibConnectionAMQPConnection;
use PhpAmqpLibMessageAMQPMessage;
// Message Prep
$connection = new AMQPConnection($config['mq']['host'],
$config['mq']['port'],
$config['mq']['user'],
$config['mq']['pass']);
$channel = $connection->channel();
$message = join(' ', array_splice($argv, 1));
$message = empty($message) ? 'Hello world!' : $message;
// Publish Message
$channel->basic_publish(new AMQPMessage( $message ), '', 'hello');
echo " [x] Sent '$message'n";
$channel->close();
$connection->close();

22. Now we create a consumer

23. Consumer: receive.php
<?php
require_once 'vendor/autoload.php';
$config = require('config.php');
use PhpAmqpLibConnectionAMQPConnection;
$connection = new AMQPConnection($config['mq']['host'],
$config['mq']['port'],
$config['mq']['user'],
$config['mq']['pass']);
$channel = $connection->channel();
$channel->queue_declare('hello', false, false, false, true);
echo ' [*] Waiting for messages. To exit press CTRL+C', "n";
$handler = function($message) use($channel){
echo sprintf('Message: %s' . PHP_EOL, $message->body);
};
$channel->basic_consume('hello', false, true, true, false, false,
$handler);
$channel->wait();

24. Consumer: receive.php
<?php
require_once 'vendor/autoload.php';
$config = require('config.php');
use PhpAmqpLibConnectionAMQPConnection;
$connection = new AMQPConnection($config['mq']['host'],
$config['mq']['port'],
$config['mq']['user'],
$config['mq']['pass']);
$channel = $connection->channel();
$channel->queue_declare('hello', false, false, false, true);
echo ' [*] Waiting for messages. To exit press CTRL+C', "n";
$handler = function($message) use($channel){
echo sprintf('Message: %s' . PHP_EOL, $message->body);
};
$channel->basic_consume('hello', false, true, true, false, false,
$handler);
$channel->wait();

25. Consumer: receive.php
<?php
require_once 'vendor/autoload.php';
$config = require('config.php');
use PhpAmqpLibConnectionAMQPConnection;
$connection = new AMQPConnection($config['mq']['host'],
$config['mq']['port'],
$config['mq']['user'],
$config['mq']['pass']);
$channel = $connection->channel();
$channel->queue_declare('hello', false, false, false, true);
echo ' [*] Waiting for messages. To exit press CTRL+C', "n";
$handler = function($message) use($channel){
echo sprintf('Message: %s' . PHP_EOL, $message->body);
};
$channel->basic_consume('hello', false, true, true, false, false,
$handler);
$channel->wait();

26. Consumer: receive.php
<?php
require_once 'vendor/autoload.php';
$config = require('config.php');
use PhpAmqpLibConnectionAMQPConnection;
$connection = new AMQPConnection($config['mq']['host'],
$config['mq']['port'],
$config['mq']['user'],
$config['mq']['pass']);
$channel = $connection->channel();
$channel->queue_declare('hello', false, false, false, true);
echo ' [*] Waiting for messages. To exit press CTRL+C', "n";
$handler = function($message) use($channel){
echo sprintf('Message: %s' . PHP_EOL, $message->body);
};
$channel->basic_consume('hello', false, true, true, false, false,
$handler);
$channel->wait();

28. Message is Sent to Exchange
(P) Producer/Publisher - (X) Exchange - (C) Consumer

29. Exchange Types
Direct, Fanout, and Topic

33. Queue bound to many exchanges

34. $msg = new AMQPMessage( $message );
$channel->basic_publish($msg, '', ‘messages.new');

35. * matches one word
# matches zero or more words
A word is delineated by .
*, #, and .

36. *.new
messages.*
NOT *.messages.*
messages.new matches

37. NOT spam.*
spam.*.*
spam.#
spam.message.new matches

38. Now Let’s Create an
Exchange and a Queue

39. Using the Management UI
rabbitmq-plugins enable rabbitmq_management
http://localhost:15672

42. We’ve Created Everything
Publishers, Exchanges, Bindings, Queues, and Consumers

43. So what can we do with this?

44. Part 2
PHP & RabbitMQ Together
1. Carrot to make things easy
2. Publish events from the web
3. Multiple consumers
4. Management UI Publishing
5. Consumers Publishing

45. Carrot
github.com/jasonlotito/Carrot

46. Carrot Consumer Code
<?php
require_once 'vendor/autoload.php';
use CarrotConsumer;
$queue = 'new_messages';
$handler = function($msg){
echo $msg, PHP_EOL;
return true;
};
(new Consumer())->listenTo($queue, $handler)
->listenAndWait();!

47. Carrot Publisher Code
<?php
require 'vendor/autoload.php';
use CarrotPublisher;
$msg = implode(' ', array_splice($argv, 1));
(new Publisher('messages'))
->publish('message.new', $msg);

49. Make publishing easy

50. Make consuming easier

51. github.com/jasonlotito/
midwest-rabbitmq/tree/carrot

52. Adding the Web

53. Publisher
$publisher = new Publisher('messages');
$sendCount = (int) (isset($_POST['simulatedMessageCount']) ?
$_POST['simulatedMessageCount'] : 1);
for($x = 0; $x<$sendCount; $x++){
if(isset($_POST['simulateWork'])) {
usleep(500000);
$msg = ['comment' => $_POST['comment'] . " $x"];
$publisher->eventuallyPublish('message.new', $msg);
} else {
$msg = ['comment' => $_POST['comment'] . " $x"];
$publisher->publish('message.new', $msg);
}
}

54. Let’s use the written
Carrot Consumer Code

56. batch_basic_publish
public function eventuallyPublish($routingKey, $message)
{
$msg = $this->buildMessage($message);
$channel = $this->getChannel();
$channel->batch_basic_publish($msg, $this->exchange,
$routingKey);
$this->registerShutdownHandler();
}
public function finallyPublish()
{
if ($this->doBatchPublish) {
$this->doBatchPublish = false;
$this->getChannel()->publish_batch();
}
}
!
// register finallyPublish
private function registerShutdownHandler();

57. Publish from the web
Let’s add another consumer
Without changing existing code

58. send text messages
$queueName = 'messages_for_nexmo';
(new Consumer())
->bind($queueName, 'messages', 'message.new')
->listenTo($queueName, function($msg) use($key, $secret, $phoneNumber) {
$msg = json_decode($msg);
$urlString = 'https://rest.nexmo.com/sms/json?api_key=%s&api_secret=%s' .
'&from=17088568489&to=%s&text=%s';
$preparedMessage = urlencode($msg->comment);
$url = sprintf($urlString, $key, $secret, $phoneNumber, $preparedMessage);
$res = file_get_contents($url);
$result = json_decode($res);
$messageResult = $result->messages[0];
echo "Message Result: " .
($messageResult->status === '0' ? 'Message Sent' : 'Message not sent')
. PHP_EOL;
return $messageResult->status === '0';
})->listenAndWait();

59. send text messages
$queueName = 'messages_for_nexmo';
(new Consumer())
->bind($queueName, 'messages', 'message.new')
->listenTo($queueName, function($msg) use($key, $secret, $phoneNumber) {
$msg = json_decode($msg);
$urlString = 'https://rest.nexmo.com/sms/json?api_key=%s&api_secret=%s' .
'&from=17088568489&to=%s&text=%s';
$preparedMessage = urlencode($msg->comment);
$url = sprintf($urlString, $key, $secret, $phoneNumber, $preparedMessage);
$res = file_get_contents($url);
$result = json_decode($res);
$messageResult = $result->messages[0];
echo "Message Result: " .
($messageResult->status === '0' ? 'Message Sent' : 'Message not sent')
. PHP_EOL;
return $messageResult->status === '0';
})->listenAndWait();

60. send text messages
$queueName = 'messages_for_nexmo';
(new Consumer())
->bind($queueName, 'messages', 'message.new')
->listenTo($queueName, function($msg) use($key, $secret, $phoneNumber) {
$msg = json_decode($msg);
$urlString = 'https://rest.nexmo.com/sms/json?api_key=%s&api_secret=%s' .
'&from=17088568489&to=%s&text=%s';
$preparedMessage = urlencode($msg->comment);
$url = sprintf($urlString, $key, $secret, $phoneNumber, $preparedMessage);
$res = file_get_contents($url);
$result = json_decode($res);
$messageResult = $result->messages[0];
echo "Message Result: " .
($messageResult->status === '0' ? 'Message Sent' : 'Message not sent')
. PHP_EOL;
return $messageResult->status === '0';
})->listenAndWait();

61. Both queues get the message

63. Let’s add another layer

64. Yo dawg, let’s have a
consumer publish

65. Send an email
After the text message

66. Create a new Exchange

67. Update text message consumer
$publisher = new Publisher('sms');
(new Consumer())
->bind($queueName, 'messages', 'message.new')
->listenTo($queueName, function($msg) use($key, $secret, $phoneNumber, $publisher) {
// existing code
$successful = $messageResult->status === '0';
if ($successful) {
$publisher->publish(‘sms.sent', ['message' => $msg->comment]);
}
return $successful;
})->listenAndWait();

68. Let’s write the email consumer
And I’ll also show you how to easily test them

69. Email Consumer
(new Consumer())
->bind('send_email', 'emails', '*.send')
->bind('send_email', 'sms', '*.sent')
->listenTo('send_email', function($message){
$msg = json_decode($message);
mail('jasonlotito@gmail.com', 'MidwestPHP RabbitMQ Talk',
$msg->message);
echo 'Message sent: ' . $msg->message . PHP_EOL;
return true;
})->listenAndWait();

70. Email consumer
(new Consumer())
->bind('send_email', 'emails', '*.send')
->bind('send_email', 'sms', '*.sent')
->listenTo('send_email', function($message){
$msg = json_decode($message);
mail('jasonlotito@gmail.com', 'MidwestPHP RabbitMQ Talk',
$msg->message);
echo 'Message sent: ' . $msg->message . PHP_EOL;
return true;
})->listenAndWait();

72. Now, let’s see it
from the beginning

74. rabbitmq.org

76. Thank you. Review: joind.in/10558
#midwestphp #rabbitmq
Questions? Feel free to stop and ask me, email, tweet, @jasonlotito@gmail.com