Admin tools development/Global contributions tool

This page is just a draft of what such a tool should have / look like. No plans exist yet to actually write it ;)

Background
Currently stewards and SWMT use a global contributions tool (, aka luxo's tool) to track IP addresses and users who are spamming/vandalizing cross-wiki. This tool should be put in an extension, which would make it faster and better supported. 26957 is tracking this.

Requirements

 * Work for both IP addresses and registered users (including non-global accounts)
 * Run from any wiki - Special:GlobalContributions should work everywhere, like Special:CentralAuth
 * Be fast and not kill the servers
 * Shows all edits, not just recent ones
 * Provide timestamp, page title + link, diff link, history link, edit summary, and whether the edit is still the current edit.
 * Display local block info if a user is currently blocked

Would be nice to have

 * Ability to see deleted/suppressed edits, depending on access level (may be hard crosswiki)
 * If not, link to see deleted contribs

Random code thoughts

 * For logged in users, we can optimize by only running the query where we know there are accounts that exist (CA's localnames table)
 * Look into something like CentralAuthUser::queryAttached / CentralAuthUser::localUserData