Extend CAP Outbox Service to support more event-queue features

[oklemenz2]

Features

• periodic events via periodic section
• custom functions like cluster

The following configuration shall be possible in event.queue CDS ENV:

Example:

"SchedulingProcessingService": {
  "impl": "./srv/scheduling/provider-service",
  "outbox": {
    "kind": "persistent-outbox",
    "maxAttempts": 5,
    "checkForNextChunk": true,
    "parallelEventProcessing": 5,
    "periodic": {
        "main": {
          "cron": "0 0 0 * * *"
        },
        "process": {
           "...": "..."
        }
    }
  }
}

[oklemenz2]

Bootstrap event-queue. Connect to every service with outbox to inject event-queue handling... Default: autoConnect: true Can be deactivated autoConnect: false

[soccermax]

Support of custom event-queue functions

Can be done like this

  // clusterQueueEntries + msg.event
  // clusterQueueEntries
  // super.clusterQueueEntries(queueEntriesWithPayloadMap);

  // onCommitError + msg.event
  // onCommitError
  // super.onCommitError(queueEntriesWithPayloadMap);