This task represents the work with implementing the new instrumentation that was decided upon in T277349.
=== Instrumentation implementation spec
|Schema|Trigger action(s)|`Event name`|
|---|---|---
//@Mneisler please document the instrumentation spec in whatever way/place you and @DLynch think is best (e.g. in this ticket, within the existing [Topic Notifications/Instrumentation spec](https://www.google.com/url?sa=t&rct=j&esrc=s&source=appssearch&uact=8&cd=1&cad=rja&q&sig2=rDCfl3Ek6OEYxIYOEuqc4Q&ved=0ahUKEwi55pfG9MTxAhUCqGQKHZI6AMo4ABABKAEwAQ&url=https://drive.google.com/a/wikimedia.org/open?id%3D1wlGzy6oZ8jbY5-EpydN7SqZnG1ikHTk05ZsZx1euWME%26usp%3Dchrome_omnibox&usg=AOvVaw3dsnFc6EWPk6pj55sEc_GQ), etc.).//
=== Done
- [ ] All new instrumentation needs are defined and documented in this ticket
- [ ] All new instrumentation needs are implemented