Hypothesis Text

If we update the EventBus extension to utilize in-process PHP events for page state changes and conduct initial research to verify the feasibility of implementing a long-lived PHP Kafka listener, we will demonstrate that domain events are a viable option for both broadcasting and consuming events for use cases beyond MediaWiki.

Description

Over the course of FY24-25, we identified and implemented domain events as a mechanism to improve stability across MediaWiki by replacing some event-like hooks with a new domain event pattern.

• 1. Milestones
• Replace the following hooks with well-established PageState change events:
  • PageSaveCompleteHook
  • PageDeleteCompleteHook
• [Stretch] Replace the following hooks with new PageState change events:
  • PageMoveCompleteHook
  • PageUndeleteCompleteHook
  • ArticleRevisionVisibilitySetHook
• Testing period
• Spike work for determining feasibility of PHP Kafka listener
• [Stretch] Basic PoC to implement an example pipeline for bringing data into MW