I'm practicing with CQRS and making my own implementation of CommandBus to see how it works.
What I want to do? I would like to have my own framework where I create my bootstrapping to instantiate my CommandBus with my array where I map each command with its handler. My intention was to do the following:
I create the CommandBus and instantiate it in my app.php
CommandBus:
final class CommandBus {`
private array $handlers;
public function __construct()
{
$this->handlers = [];
}
public function addHandler($commandName, $handler) {
$this->handlers[$commandName] = $handler;
}
public function handle($command) {
$commandHandler = $this->handlers[get_class($command)];
if($commandHandler === null) {
throw new \http\Exception\InvalidArgumentException();
}
return $commandHandler->handle($command);
}
}
app.php:
$commandBus = new CommandBus();
$commandBus->addHandler($commandName, $handler);
Controller:
final class Controller {
public function __construct()
{}
public function action() {
//...
$commandBus->handle($command);
//...
}
}
The problem is that I can't use the $commandBus variable inside my controller. What would be the best way to have that variable always available and have access to my array of handlers?
