Record aggregator metrics in event store

[sfauvel]

Content

Store usage metrics in the event store of the aggregator in order to produce statistics reports.

The new service usage_report sending events at regular intervals to the ̀event store. The frequency of measurement taking can be configured by settingPERSIST_USAGE_REPORT_INTERVAL_IN_SECONDS` environment variable.

The view metrics_per_day calculate the value of each metric over a day.

This feature is described in the runbook aggregator-metrics.

Pre-submit checklist

• Branch
  • [x] Tests are provided (if possible)
  • [x] Crates versions are updated (if relevant)
  • [ ] CHANGELOG file is updated (if relevant)
  • [x] Commit sequence broadly makes sense
  • [x] Key commits have useful messages
• PR
  • [x] No clippy warnings in the CI
  • [x] Self-reviewed the diff
  • [x] Useful pull request description
  • [x] Reviewer requested
• Documentation
  • [ ] Update README file (if relevant)
  • [ ] Update documentation website (if relevant)
  • [ ] Add dev blog post (if relevant)

Issue(s)

Closes #2023

[github-actions[bot]]

Test Results

    4 files  ± 0     51 suites  ±0   10m 27s ⏱️ -3s 1 415 tests +15  1 415 ✅ +15  0 💤 ±0  0 ❌ ±0  1 626 runs  +15  1 626 ✅ +15  0 💤 ±0  0 ❌ ±0 

Results for commit 10703b45. ± Comparison against base commit bd9b7be4.

:recycle: This comment has been updated with latest results.