who-owns

Usage

/who-owns <path>

Path must match :File.path exactly — repo-root-relative with forward slashes (e.g. codegraph/codegraph/loader.py, not absolute, not with a leading ./).

Joins three ownership edges written by the Phase-7 ownership pass:

Edge	Source	Columns
LAST_MODIFIED_BY	most-recent commit from git log	author name, email, timestamp
CONTRIBUTED_BY	all authors for the file, with commit counts	roll-up of top 5
OWNED_BY	CODEOWNERS file	team name(s)

What this does

codegraph query "
MATCH (f:File {path: '$ARGUMENTS'})
OPTIONAL MATCH (f)-[lm:LAST_MODIFIED_BY]->(last:Author)
OPTIONAL MATCH (f)-[c:CONTRIBUTED_BY]->(co:Author)
OPTIONAL MATCH (f)-[:OWNED_BY]->(t:Team)
WITH f, last, lm, t, co, c
ORDER BY c.commits DESC
WITH f,
     last,
     lm,
     collect(DISTINCT t.name) AS teams,
     collect({author: co.name, email: co.email, commits: c.commits})[..5] AS top_contributors
RETURN f.path AS file,
       last.name AS last_modified_by,
       last.email AS last_email,
       lm.at AS last_modified_at,
       teams,
       top_contributors
"

Caveats

• Requires ownership indexing. /graph-refresh runs with --skip-ownership by default (it's ~30s slower with it). If last_modified_by comes back null and top_contributors is [{author: null, ...}], re-index without the flag:

  codegraph index . -p codegraph/codegraph -p codegraph/tests --no-wipe
  

• CODEOWNERS must be present. If the repo has no CODEOWNERS file (or .github/CODEOWNERS / docs/CODEOWNERS), the teams column will be empty. That's not a bug — it's the absence of team-level ownership metadata.
• Path has to match exactly. Use /graph "MATCH (f:File) WHERE f.path CONTAINS 'loader' RETURN f.path" if you're not sure of the stored path.
• Author email is the join key (CREATE CONSTRAINT author_email ... UNIQUE). If the same person commits under multiple emails, they appear as separate authors.