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Example code of rezzza/command-bus

Informations about the package command-bus

Rezzza\CommandBus

Build Status

Light command bus.

Installation

composer.json:

Command

Commands must implements an interface Rezzza\CommandBus\Domain\CommandInterface, it should be value object, example:

Command Handlers

A command handler will be called by the command bus when it handle command.

The handler could be:

- A callable (\Closure or a callback)
- An object. In example of ShortenUrlCommand, the bus will execute `$object->shortenUrl($command)`

Command bus

It'll find a command handler then handle the command. We provide at this moment three command bus:

- Direct (synchronous)
- Redis (asynchronous)
- Rabbit (asynchronous)
- Implement your own command bus with `\Rezzza\CommandBus\Domain\CommandBusInterface`

You can see examples to see them in action.

Fail Strategies

When the bus handle the command, and the command handler fail, you may want to re-queue the command to be executed later.

- RetryThenFailStrategy: The command is requeued in a `Retry` queue, you'll be able to consume this queue and configure how many time you want to execute it before it goes to a `Fail` queue. Look at `examples/redis_worker.php` example to understand how it work.
- RequeueStrategy: The command is requeued
- NoneStrategy: The command will not being requeued.
- Your own strategy with `Rezzza\CommandBus\Domain\Consumer\FailStrategy\FailStrategyInterface`

Consumer

In your console command, you can use a consumer to handle asynchronous commands. For example with redis, you'll do

Examples are the best documentation, look at examples directory.

All versions of command-bus with dependencies

PHP Build Version
Package Version
Requires php Version >=5.5.0
psr/log Version ~1.0
symfony/event-dispatcher Version ~2.5|~3.0
symfony/serializer Version ~2.5|~3.0
symfony/dependency-injection Version ~2.5|3.0
doctrine/inflector Version ~1.0
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