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Example code of libcast/jobqueue

Informations about the package jobqueue

PHP JobQueue component

Scrutinizer Code Quality Code Coverage Build Status

Simple Job/Queue PHP component to help applications distribute Tasks through multiple workers.

Install

This package is installable and auto-loadable via Composer:

The application proposes a webservice and two CLIs. Read bellow for more documentation.

Configuration

Usage

Defining a job

A job holds the code that will be executed for tasks by a worker.

Each job must be defined in a PHP class that implements the ExecutableJob interface:

Note: ExecutableJob interface extends the LoggerAwareInterface that can be used to set a logger. This documentation provides more information about PSR-3 Log interfaces.

Tip: Package psr/log (repo) can be added to a composer project by running this command:

The \Psr\Log\LoggerAwareTrait can be used to easily add a logger setter and be compliant with the LoggerAwareInterface.

Defining a task

Creating a task requires the following elements:

To define a task in PHP:

Adding tasks to the queue

First, the queue has to be instantiated.

This can be done manually:

Or by using the ServiceContainer (this requires the proper configuration, see Configuration section above):

Then, tasks can be enqueued easily:

The task's job will be executed as soon as a worker starts consuming the task's profile. This component embeds a PHP executable worker. See the CLI section to get more details about its usage.

Worker events

The worker emits some events that can be listened to:

Event name Description Event attributes
worker.start Fired on worker launch $event->getWorker()
worker.finished Fired once the worker has finished running $event->getWorker()
task.fetched Fired each time a task is fetched from queue by the worker $event->getTask()
task.executed Fired when a task's job execution has been successful done $event->getTask()
task.failed Fired when a task's job execution fails $event->getTask()

To intercept an event, you can use the EventDispatcher from the service container:

CLI

Those features require the proper configuration, see Configuration section above.

The manager app can be used to perform CRUD operations on tasks.

Usage:

The worker app can be used to consume enqueued tasks.

Usage:

The worker app can be used as an OS service (eg. upstart, systemd... on unix) to run on servers.

Webservice

Configuration

A web server should be configured to serve public/index.php as a router script. This feature requires the proper configuration, see Configuration section above.

API

List all tasks:

Returns an array of tasks:

Errors:

Get a task information:

Returns the task definition:

Errors:

Create a new task:

Returns the task definition:

Errors:

Tests

First, a Redis server must run locally (127.0.0.1 on 6379 port).

Then, to run tests, use the following command:

The MIT License (MIT). Please see LICENSE for more information.

All versions of jobqueue with dependencies

PHP Build Version
Package Version
Requires php Version ^7.1
http-interop/response-sender Version ^1.0
middlewares/error-handler Version ^1.0
middlewares/fast-route Version ^1.0
middlewares/payload Version ^1.0
middlewares/request-handler Version ^1.0
predis/predis Version ^1.0
psr/log Version ^1.0
ramsey/uuid Version ^3.0
relay/relay Version ^2.0
symfony/config Version ^4.0
symfony/console Version ^4.0
symfony/dependency-injection Version ^4.0
symfony/event-dispatcher Version ^4.0
symfony/yaml Version ^4.0
vlucas/phpdotenv Version ^2.0
zendframework/zend-diactoros Version ^1.0
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