forgejo/models
Gusted 7c150be23d feat: improved performances when checking for conflicts on pull requests (#7727)
- `testPatch` is a function that is called to test a pull request and determine the state of the pull request. Checking for merge conflicts, check if the diff is empty and if the pull request modifies any protected files.
- The checking for merge conflict and if the diff is empty used git commands that relied on a working tree to correctly functions. Forgejo store repositories in a bare format which do not contain a working tree. This means that a temporary copy was created every time a pull request had to be re-checked and for large repositories involving quite some I/O interaction.
- This patch adjusts those codepaths to instead use newer Git plumbing commands that work without requiring a work tree and can thus be used directly on the bare repository. The merge conflict is now done via [`git-merge-tree(1)`](https://git-scm.com/docs/git-merge-tree/) and checking if the diff is empty is done via [`git-diff-tree(1)`](https://git-scm.com/docs/git-diff-tree).
- If the function is called to test a patch where the head and base repository are not the same, then [Git alternate](https://git-scm.com/docs/gitglossary#Documentation/gitglossary.txt-aiddefalternateobjectdatabaseaalternateobjectdatabase) is used to make the head commit available in the base repository, this done on a per git command basis via the `GIT_ALTERNATE_OBJECT_DIRECTORIES` environment.
- As far as I can understand the documentation and the existing code, there's no edge case that the new code cannot handle. It also results in a cleaner codepath, as the existing code did a lot of checking and merging in a more traditional approach that required a lot of (parsing) code, while the new code offloads this to git and has a trivial parser of the output.
- Resolves forgejo/forgejo#7701
- Added exhaustive integration testing.

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/7727
Reviewed-by: Earl Warren <earl-warren@noreply.codeberg.org>
Reviewed-by: Otto <otto@codeberg.org>
Co-authored-by: Gusted <postmaster@gusted.xyz>
Co-committed-by: Gusted <postmaster@gusted.xyz>
2025-05-16 12:40:38 +00:00
..
actions Actions Done Notification (#7491) 2025-04-24 15:15:24 +00:00
activities Show if commit is signed in activity feed and unify sha box (#6933) 2025-05-03 10:54:52 +00:00
admin chore: branding import path (#7337) 2025-03-27 19:40:14 +00:00
asymkey Show if commit is signed in activity feed and unify sha box (#6933) 2025-05-03 10:54:52 +00:00
auth feat: consider WebAuthn & SSH for instance signing (#7693) 2025-04-29 10:34:07 +00:00
avatars chore: branding import path (#7337) 2025-03-27 19:40:14 +00:00
db fix various typos (#7690) 2025-04-28 06:46:29 +00:00
dbfs Update module github.com/golangci/golangci-lint/cmd/golangci-lint to v2 (forgejo) (#7367) 2025-03-28 22:22:21 +00:00
fixtures fix: Remove "create branch" button on mirrored repos (#7640) 2025-05-14 23:26:12 +00:00
forgefed add port and schema to federation host (#7203) 2025-04-16 08:07:51 +00:00
forgejo/semver Update module github.com/golangci/golangci-lint/cmd/golangci-lint to v2 (forgejo) (#7367) 2025-03-28 22:22:21 +00:00
forgejo_migrations add port and schema to federation host (#7203) 2025-04-16 08:07:51 +00:00
git chore: merge tests.AddFixtures and unittest.OverrideFixtures (#7648) 2025-04-25 09:14:33 +00:00
issues chore: merge tests.AddFixtures and unittest.OverrideFixtures (#7648) 2025-04-25 09:14:33 +00:00
migrations feat: improved performances when checking for conflicts on pull requests (#7727) 2025-05-16 12:40:38 +00:00
organization chore: merge tests.AddFixtures and unittest.OverrideFixtures (#7648) 2025-04-25 09:14:33 +00:00
packages [gitea] week 2025-16 cherry pick (gitea/main -> forgejo) (#7602) 2025-05-02 18:35:33 +00:00
perm Update module github.com/golangci/golangci-lint/cmd/golangci-lint to v2 (forgejo) (#7367) 2025-03-28 22:22:21 +00:00
project Update module github.com/golangci/golangci-lint/cmd/golangci-lint to v2 (forgejo) (#7367) 2025-03-28 22:22:21 +00:00
pull chore: branding import path (#7337) 2025-03-27 19:40:14 +00:00
quota chore: branding import path (#7337) 2025-03-27 19:40:14 +00:00
repo chore: merge tests.AddFixtures and unittest.OverrideFixtures (#7648) 2025-04-25 09:14:33 +00:00
secret chore: branding import path (#7337) 2025-03-27 19:40:14 +00:00
shared/types chore: branding import path (#7337) 2025-03-27 19:40:14 +00:00
system Update module github.com/golangci/golangci-lint/cmd/golangci-lint to v2 (forgejo) (#7367) 2025-03-28 22:22:21 +00:00
unit chore: branding import path (#7337) 2025-03-27 19:40:14 +00:00
unittest chore: replace github.com/go-testfixtures/testfixtures (#7715) 2025-04-29 19:28:56 +00:00
user fix: replace ß with ss in normalizeUserName (#7817) 2025-05-08 16:59:41 +00:00
webhook fix webhook url (#34186) 2025-04-14 16:10:20 +02:00
error.go chore: branding import path (#7337) 2025-03-27 19:40:14 +00:00
main_test.go chore: branding import path (#7337) 2025-03-27 19:40:14 +00:00
org.go chore: branding import path (#7337) 2025-03-27 19:40:14 +00:00
org_team.go chore: branding import path (#7337) 2025-03-27 19:40:14 +00:00
org_team_test.go Update module github.com/golangci/golangci-lint/cmd/golangci-lint to v2 (forgejo) (#7367) 2025-03-28 22:22:21 +00:00
org_test.go Update module github.com/golangci/golangci-lint/cmd/golangci-lint to v2 (forgejo) (#7367) 2025-03-28 22:22:21 +00:00
repo.go chore: branding import path (#7337) 2025-03-27 19:40:14 +00:00
repo_test.go Update module github.com/golangci/golangci-lint/cmd/golangci-lint to v2 (forgejo) (#7367) 2025-03-28 22:22:21 +00:00
repo_transfer.go chore: branding import path (#7337) 2025-03-27 19:40:14 +00:00
repo_transfer_test.go Update module github.com/golangci/golangci-lint/cmd/golangci-lint to v2 (forgejo) (#7367) 2025-03-28 22:22:21 +00:00