project: don't rerun git status after a failed snapshot

When a status snapshot fails, fall back directly to _IsDirtyLegacy()
instead of IsDirty() to avoid running git status twice.

Expose Project.GetDirtyAndHead() so sync bloat checks can inspect
worktree state without invoking private Project methods.

Bug: 565047698
Change-Id: I6432ed82da88778eec9d151fd5b70bedb1efc62b
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/634424
Reviewed-by: Brian Gan <brgan@google.com>
Commit-Queue: Gavin Mak <gavinmak@google.com>
Tested-by: Gavin Mak <gavinmak@google.com>
This commit is contained in:
Gavin Mak authored and gerrit-scoped@luci-project-accounts.iam.gserviceaccount.com committed 2026-09-23 13:26:55 -07:00
1 parent e7d4d97ffc
commit 310c99571f
4 files changed
+102 -26

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@@ -1614,20 +1614,9 @@ later is required to fix a server side protocol bug.
# Only check dirty or locally modified projects. These can't be
# freshly cloned and will accumulate garbage.
try:
status = project._GetStatusSnapshot(
untracked_files="normal", branch=True
)
if status is not None:
is_dirty = status.is_dirty(consider_untracked=True)
head_rev = status.branch_oid
else:
is_dirty = project.IsDirty(consider_untracked=True)
head_rev = project.work_git.rev_parse(HEAD)
is_dirty, head_rev = project.GetDirtyAndHead()
if head_rev is None:
# Porcelain v2 reports an unborn branch as "(initial)". The
# legacy rev-parse path failed here and skipped the bloat
# calculation, so preserve that behavior.
# An unborn branch has no HEAD to compare, so skip it.
return None
manifest_rev = project.GetRevisionId(project.bare_ref.all)