Intro
The Collection extension has been generating multiple production errors for over a year. Some of the extension's functionality has been extracted into the Proton service. The book creation aspect of this extension however has not.
**Number, severity, and age of known and confirmed security issues**
See https://phabricator.wikimedia.org/maniphest/query/xa3bDF3ygt2r/#R for those who have access to Security issues
**Was it a cause of production outages or incidents? List them.**
TBD
**Does it have sufficient hardware resources for now and the near future (to take into account expected usage growth)?**
n/a
**Is it a frequent cause of monitoring alerts that need action, and are they addressed timely and appropriately?**
Yes, there have been some ongoing errors in production (e.g. see T197797, T203594, T223742, T224443, T189636).
**When it was first deployed to Wikimedia production**
2008 or earlier, according to https://www.mediawiki.org/w/index.php?title=Extension%3ACollection&type=revision&diff=221705&oldid=217405
**Usage statistics based on audience(s) served**
TBD
**Changes committed in last 1, 3, 6, and 12 months**
12m: [65 commits](https://wikimedia.biterg.io/goto/4a0f96095936342f00916af7425bf27c)
6m: [48 commits](https://wikimedia.biterg.io/goto/1b7913a0d1650060c4ea73ef8d69f178)
3m: [27 commits](https://wikimedia.biterg.io/goto/ded06d03765bfd9ae64e383b287c3528)
**Reliance on outdated platforms (e.g. operating systems)**
n/a
**Number of developers who committed code in the last 1, 3, 6, and 12 months**
12m: [11 authors](https://wikimedia.biterg.io/goto/4a0f96095936342f00916af7425bf27c)
6m: [7 authors](https://wikimedia.biterg.io/goto/1b7913a0d1650060c4ea73ef8d69f178)
3m: [6 authors](https://wikimedia.biterg.io/goto/ded06d03765bfd9ae64e383b287c3528)
**Number and age of open patches**
See https://gerrit.wikimedia.org/r/#/q/status:open+project:mediawiki/extensions/Collection
**Number and age of open bugs**
See https://phabricator.wikimedia.org/maniphest/query/zDqcGSnMZPl6/#R
**Number of known dependencies?**
TBD
**Is there a replacement/alternative for the feature? Is there a plan for a replacement?**
Unknown
**Submitter's recommendation (what do you propose be done?)**
None