vole

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git clone ssh://git@0.0.0.0:2222/vole.git

A free and open-source forge that lives in your Git repo.

Record the default branch summary when a push lands

8dc56e4e258dd56e2c20776f80d61dbed4993f31 · Keenan Nemetz · 9d ago · parent 20442b59

Record the default branch summary when a push lands

The landing card showed the default branch tip and the language it is
mostly made of by running `symbolic-ref`, `rev-parse`, `log -1` and
`ls-tree -r` per repository on every home page read. Those facts change
only when a push moves the branch, so the push now records them.

- `repos` carries head_sha, head_subject, head_author, head_when,
  language and lang_class, and `Index.Entry` returns them with the rest of
  the row.
- `Store.RefreshHead` recomputes the summary and skips the tree walk when
  the recorded tip is still the branch tip, so a metadata or tag push
  costs one rev-parse. It runs from post-receive, from the rebuild, and
  after the default branch changes in settings.
- The language mapping moved to `internal/lang`, shared by the web pages
  and the summary; `fileClass` and `languageFor` are now one table.
- The home cards read the head, language, counts, ACL and newest event
  time from the index. The home page starts no git process at all; the
  all-git card builder stays as the fallback for a Web without an index.

Load harness at concurrency 4 with three repositories: home goes from 243
to 749 req/s, p50 from 16 ms to 5 ms, and the server runs no git child
process for those requests.

server/hook/hook.go +7−1

@@ -741,7 +741,13 @@ func RefreshIndex(cfg Config) error {
	741	741	}
	742	742	// A tag is a ref, not metadata: no metadata commit announces a release, so
	743	743	// the feed's release events are refreshed from the refs on every push.
	744		return store.RefreshTags(m)
		744	if err := store.RefreshTags(m); err != nil {
		745	return err
		746	}
		747	// The default branch tip and its language are what the landing card shows.
		748	// RefreshHead compares the tip first, so a metadata or tag push does not walk
		749	// the tree.
		750	return store.RefreshHead(m)
	745	751	}
	746	752
	747	753	// shortOrNone renders a sha for the log, naming the two states that are not a commit: