broadway

CommandHandling Component

Primitives to use commands in your application.

Command bus

An interface and two simple implementations of a command bus where commands can be dispatched on.

Command handler

An interface and convenient base class that command handlers can extend.

The base class provided by this component uses a convention to find out whether the command handler can execute a command or not. To signal that your command handler can handle a command ExampleCommand, just implement the handleExampleCommand method in the extending class.

use Broadway\CommandHandling\SimpleCommandHandler;

/**
 * A command handler that only handles ExampleCommand commands.
 */
class ExampleCommandHandler extends SimpleCommandHandler
{
    /**
     * Method handling ExampleCommand commands.
     *
     * The fact that this method handles the ExampleCommand is signalled by the
     * convention of the method name: `handle<CommandClassName>`.
     */
    public function handleExampleCommand(ExampleCommand $command)
    {
        echo $command->getMessage() . "\n";
    }
}

Testing

A helper to implement scenario based tests for command handlers that use an event store.

Example

The examples/ directory at the root of the project contains a runnable command handling example (command-handling). The code you find there contains comments with what is happening.

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