Event Sourcing with Laravel and EventSauce

Let's build a real-world Event Sourced application using Laravel and EventSauce!

Goals

• Build an inventory managment system named Stockr
• Use Laravel for the base application
• Use EventSauce (EventSauce.io) for the Event Store
• Use Eloquent ORM for parts of the Read Model
• Build an Command Bus around Tactician
• Build a standalone Projections package

Tasks

• Create the Laravel project
• Bring in EventSauce
• Write our own Message Repository implementation (based on eventsauce/doctrine-message-repository)
  • DB::getDoctrineConnection() (thanks @phcostabh!)
  • Laravel and Doctrine DBAL Transactions do not play nicely with each other...
  • Remove Aggregate Root ID Type column
• Build a Command Bus
  • dispatch($className, array $payload = [])
  • RecordOnlyCommandBus for testing with the Command Bus (gist)
  • Command Validation
    • Required Fields
    • Allowed Fields
  • Testing the Command Bus
    • Command Bus
    • Command
  • Testing with the Command Bus
• Bring in Tactician (v2)
  • TacticianCommandBus for actual usage
  • Locking Middleware and Laravel Provider for Tactician 2.x (gist)
    • Laravel Provider
    • Locking Middelware
• Build Command Audit Logging into the Command Bus

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