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Publish additional change related events over WS

Daniel Gerhardt requested to merge publish-change-meta-events into master

Change meta events are published after all entity CRUD operations. They are sent to a single STOMP topic per room and consist of the change type, entity type and entity ID.

STOMP topic: <Room ID>.changes-meta.stream Event properties:

  • changeType: CREATE | UPDATE | DELETE
  • entityType: String
  • entityId: String

Also, new events are published for room stats. Specific changes cannot be detected for non-entities, so the whole object is sent as payload.

Two topics are used, one for publicly visible and one for moderator roles. These topics are intended to be used for other non-entity changes in the future.

STOMP topics:

  • <Room ID>.changes.stream
  • <Room ID>.moderator.changes.stream

Event structure: The full RoomStatistics object is sent without wrapper. The STOMP header __TypeId__ can be used on the client side to filter events by type.

Related: particify/dev/common-concerns#14

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