Check projector active state using a specialized event publisher#474
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erikrozendaal merged 4 commits intomasterfrom Jul 7, 2025
Merged
Check projector active state using a specialized event publisher#474erikrozendaal merged 4 commits intomasterfrom
erikrozendaal merged 4 commits intomasterfrom
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This simplifies the projector logic as all projector state tracking is now only checked by the `ActiveProjectorsEventPublisher`. Replay now uses the normal `EventPublisher` so the logic to determine if an event is allowed to be processed by a projector can be simplified.
Since the event publisher used for replay no longer requires reading the `projector_states` table within the same transaction as updating the projectors the transaction is no longer needed. Adding the transaction also causes problems with (potential) deadlocks, since projectors might update multiple rows inside the same transaction during replay using multiple parallel processes.
When using the active projectors publisher the check if a projector is active and publishing the events must be inside a single transaction to ensure consistency.
lvonk
reviewed
Jul 4, 2025
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This simplifies the projector logic as all projector state tracking is now only checked by the
ActiveProjectorsEventPublisher. Replay now uses the normalEventPublisherso the logic to determine if an event is allowed to be processed by a projector can be simplified.enable_projector_statesflag and just require the user to configure the event publisher asActiveProjectorsEventPublisher?