Use one daemon to discover commits in all repositories, not one per repository
Summary:
See D2418. This merges the commit discovery daemon into the same single daemon, and applies all the same rules to it.
There are relatively few implementation changes, but a few things did change:
- I simplified/improved Mercurial importing, by finding full branch tip hashes with "--debug branches" and using "parents --template {node}" so we don't need to do separate "--debug id" calls.
- Added a new "--not" flag to exclude repositories, since I switched to real arg parsing anyway.
- I removed a web UI notification that you need to restart the daemons, this is no longer true.
- I added a web UI notification that no pull daemon is running on the machine.
NOTE: @makinde, this doesn't change anything from your perspective, but it something breaks this is the likely cause.
This implicitly resolves T792, because discovery no longer runs before pulling.
Test Plan:
- Swapped databases to a fresh install.
- Ran "pulllocal" in debug mode. Verified it correctly does nothing (fixed a minor issue with min() on empty array).
- Added an SVN repository. Verified it cloned and discovered correctly.
- Added a Mercurial repository. Verified it cloned and discovered correctly.
- Added a Git repository. Verified it cloned and discovered correctly.
- Ran with arguments to verify behaviors: "--not MTEST --not STEST", "P --no-discovery", "P".
Reviewers: btrahan, csilvers, Makinde
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T792
Differential Revision: https://secure.phabricator.com/D2430