massivescale/celery-php

2.1.1 2015-07-21 20:26 UTC

README

PHP client capable of executing Celery tasks and reading asynchronous results.

Uses AMQP extension from PECL, the PHP AMQP implementation or Redis and the following settings in Celery:

CELERY_RESULT_SERIALIZER = "json"
CELERY_TASK_RESULT_EXPIRES = None
CELERY_TRACK_STARTED = False

The required PECL-AMQP version is at least 1.0. Last version tested is 1.4.

Last PHP-amqplib version tested is 2.5.1.

Last predis version tested is 1.0.1.

Last Celery version tested is 3.1.19

API documentation

POSTING TASKS

$c = new Celery('localhost', 'myuser', 'mypass', 'myvhost');
$result = $c->PostTask('tasks.add', array(2,2));

// The results are serializable so you can do the following:
$_SESSION['celery_result'] = $result;
// and use this variable in an AJAX call or whatever

tip: if using RabbitMQ guest user, set "/" vhost

READING ASYNC RESULTS

while(!$result->isReady())
{
    sleep(1);
    echo '...';
}

if($result->isSuccess())
{
    echo $result->getResult();
}
else
{
    echo "ERROR";
    echo $result->getTraceback();
}

GET ASYNC RESULT MESSAGE

$c = new Celery('localhost', 'myuser', 'mypass', 'myvhost');
$message = $c->getAsyncResultMessage('tasks.add', 'taskId');

PYTHON-LIKE API

An API compatible to AsyncResult in Python is available too.

    $c = new Celery('localhost', 'myuser', 'mypass', 'myvhost');
    $result = $c->PostTask('tasks.add', array(2,2));

    $result->get();
    if($result->successful())
    {
            echo $result->result;
    }

ABOUT

Based on this blog post and reading Celery sources. Thanks to Skrat, author of Celerb for a tip about response encoding. Created for the needs of my consulting work at Massive Scale. License is 2-clause BSD.

DEVELOPMENT

Development process and goals.

CONNECTING VIA SSL

Connecting to a RabbitMQ server that requires SSL is currently only possible via PHP-amqplib to do so you'll need to create a celery object with ssl options:

$ssl_options = array(
  'cafile' => 'PATH_TO_CA_CERT_FILE',
  'verify_peer' => true,
  'passphrase' => 'LOCAL_CERT_PASSPHRASE',
  'local_cert' => 'PATH_TO_COMBINED_CLIENT_CERT_KEY',
  'CN_match' => 'CERT_COMMON_NAME'
);

$c = new Celery($host, $user, $password, $vhost, 'celery', 'celery', 5671, false, false, $ssl_options);

CONNECTING TO REDIS

Refer to files in testscenario/ for examples of celeryconfig.py.

$c = new Celery(
    'localhost', /* Server */
    '', /* Login */ 
    'test', /* Password */
    'wutka', /* vhost */
    'celery', /* exchange */
    'celery', /* binding */
    6379, /* port */
    'redis' /* connector */
);