Comments (2)
Hi,
ProcessManagers listen on events $eventEngine->on(<event_name>, <proces_manager>)
like described in the tutorial
If a process manager should dispatch a new command handled by the same app, you can also use a short cut by returning a command from a static method:
final class MyProcessManager
{
public static function onSomethingHappened(Message $somethingHappened): array
{
// Return command tuple (when using PrototypingFlavour or a command instance for other Flavour)
return [
Command::DO_SOEMTHING_AFTER_EVENT,
$somethingHappend->payload(), // Map payload from event to command if needed
[ /* optional metadata array */ ]
];
}
}
// Register the process manager in a Description using callable array syntax
$eventEngine->on(Event::SOMETHING_HAPPENED, [MyProcessManager::class, 'onSomethingHappened']);
The short cut is not documented yet as this is a relatively new feature. The way shown in the Tutorial is the preferred way when the process manager requires dependencies. With the short cut you avoid the round trip to the DI container which is nice for simple IF THIS THAN THAT scenarios.
from php-engine.
Thank you very much for the explanation!
I forgot that their was a process manager subtitle in the tutorial.
from php-engine.
Related Issues (14)
- Check uniqueness of Command, Query and Event names HOT 3
- meaning of CommandDispatchResult HOT 4
- EventEngine::rebuildAggregateState does not work as expected with MultiModelStore HOT 1
- Using the specification pattern in combination with Event Engine HOT 4
- Describe differences between original project and fork HOT 1
- How does migration work? HOT 2
- Next Gen Event Engine
- Context Providers should also receive the state if exists HOT 2
- Support dedicated dispatcher for commands
- Method fromCachedConfig should only load config
- Any roadmap? HOT 3
- Cannot rewind a generator that was already run HOT 3
- Restore aggregate root in event engine HOT 5
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