Commit Graph

10 Commits

Author SHA1 Message Date
drew 016b348117 feat(controller): grooming gate (Phase 0 + Phase 1 worker-shape dispatch)
Phase 0 (foundation):
- Cause enum (controller_events.cause) for action attribution
- Schema: grooming_decisions audit table; workflows gains
  grooming_evaluated_at + deferred_reason + deferred_at +
  deferred_target_workflow_id; pulls gains touched_files
- audit_comments: CLOSE / DEFER templates + render_comment_template
- forgejo_writes: close_issue + defer_issue 5-step crash-safe protocol
  (fingerprint dedup, error matrix, dry-run)
- patch_pr_state callback in forgejo_http
- grooming_config: 22-env-var frozen-dataclass config + log_effective
- pulls.touched_files cache extension (_pipeline_cache.py schema v8)
- reaper.reap_grooming_decisions audit-retention sweep
- reconciliation RESUME guard (deferred_reason)

Phase 1 (worker-queue shape, 2026-05-25):
- New state: GROOMING. New events: grooming_started, groom_verdict_
  {proceed,defer,close}. 5 new transitions; all invariants still clean
- GroomingInputV1 + GroomingOutputV1 Pydantic contracts
- outcomes._map_grooming_outcome routes verdicts to state-machine events
- prefetch.build_grooming_stage_b_input + list_open_prs callback
- scheduler GROOMING -> grooming_stage_b role
- promote: cfg-gated DISCOVERED -> GROOMING when CONTROLLER_GROOMING_
  ENABLED=true; issues skip grooming
- forgejo_writes decomposed: close_act/defer_act (Forgejo writes only;
  state-machine already transitioned) + close_decide_and_act/
  defer_decide_and_act (Phase 0 callers); _apply_workflow_transition
  is underscore-private
- grooming.py library: tokenization, suspicion scoring (Jaccard +
  weighted overlap), deterministic checks, action -> verdict mapping
- mcp/grooming_builder.py: 14-tool FastMCP server emits GroomingOutputV1
- .opencode/agents/grooming-stage-b.md: duplicate-detection agent
  prompt (claude-haiku-4-5)
- grooming_side_effects.run_grooming_side_effects_tick: per-state tick
  performs Forgejo writes after groom_verdict_{defer,close} fires.
  Filters on event_type='transition' + payload.event (centralizes the
  convention pending Phase 2's latest_transition_event helper)
- GroomingCallbacks frozen dataclass; loop.py + __main__.py wired

Worker role registry (single source of truth):
- worker/roles.py: WORKER_ROLES + WorkerRoleSpec + default_roles_csv
  + output_filename_for. agent_runner.ROLE_TO_MCP_MODULE / ROLE_TO_
  OUTPUT_MODEL derive from it; opencode_session.agent_name_for reads
  it for flat cases; all 6 prompt builders use output_filename_for;
  worker --roles default = default_roles_csv(); launcher script
  derives --roles via shell substitution. Cross-site invariant test
  enforces alignment across 5 sites + opencode.json MCP registry.

Phase 0 silent-bug fix:
- reconciliation.py RESUME guard SELECT now includes deferred_reason
  (was missing since Phase 0; guard was a silent no-op). Tightened
  from getattr to attribute access to fail fast on future omissions.

Tests (1456 total, +91 grooming-specific):
- test_grooming_phase0.py: 34 tests (orchestrator matrix, crash
  recovery, idempotency, dry-run)
- test_grooming_phase1.py: 60 tests (library, contracts, state
  machine, outcomes, scheduler, promote, prefetch, act-variants
  with signature parity, side-effect tick incl. natural-idempotency
  + executed-flag-skip + verdict-mismatch + reconciliation RESUME)
- test_mcp_builders.py TestGroomingBuilder: 29 tests (happy paths
  + 22 validation rules + Pydantic round-trip + master-tick-read-
  path companion)
- test_worker_agent_runner.py TestRoleMaps: cross-role wiring
  alignment + agent-prompt-vs-worker-fallback filename contract +
  inspect.signature equality (close_act/defer_act vs
  close_issue/defer_issue)
- test_state_machine.py: transition count 51 -> 56 +
  events_from_grooming

Live-validated end-to-end on 4 staged sentinel PRs (#55-#58) in
dry_run: agent emits verdicts via MCP, state-machine transitions
fire, side-effect tick writes audit row, deferred_reason gates
reconciliation RESUME correctly.

Deferred refinements + Phase 2 prerequisite (latest_transition_event
helper) tracked in .drew/regressions-plan.md "Phase 1 follow-up
backlog".

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-25 15:05:29 -04:00
drew eb01eb0172 feat(controller): dual-mode launcher (fork/prod) + DB-mode validator
Adds the operator surface for switching the controller pipeline between
the personal fork (drew/cleveragents-core) and the canonical repo
(cleveragents/cleveragents-core) via a MODE env + --prod CLI flag,
backed by safety primitives that make a wrong-mode launch loud rather
than silent.

run-controller-state-machine-pipeline.sh: --prod flag and MODE env
(primary home: .devcontainer/.env) select fork vs prod. After resolving
MODE, the launcher auto-sources the matching overlay file
(.devcontainer/.env.{fork,prod}) and asserts MODE didn't drift during
the source step. The drift assertion uses a readonly snapshot under an
obscure variable name so a stray ``MODE=fork`` in .env.prod aborts the
launch with a clear bash error rather than silently demoting the run.
CONTROLLER_RUN_DIR_ROOT now overrides the trial /tmp path so prod can
use a persistent /var/lib/cleveragents/run dir.

tools/launch_prod.sh (new): sibling to launch_fork.sh with the opposite
safety primitive — affirmative GET /repos/{owner}/{repo} that asserts
the target is non-fork, exists, isn't archived, and the bot has push.
On any failure, no env is exported. Honors HAL_* aliases for parity
with launch_fork.sh and prints a hard-to-miss PROD-MODE banner.

tools/controller/deploy/validate_db_mode.py (new): stamps a _mode_marker
table on each SQLite db (controller DB + telemetry cache) on first use,
asserts a match on every subsequent launch, and moves mismatched files
aside as <name>.<prior-mode>.bak.<ts> — never deletes. The --adopt flag
lets an operator grandfather in already-good pre-marker data without
losing history. Wired into the launcher's startup sequence before
OpenCode and the master start.

tools/_cache_path.py (new): single source of truth for the per-(owner,
repo) Forgejo cache file convention. .opencode/telemetry/server.py and
the launcher both delegate here so the dual-source-truth drift risk is
eliminated. tools/_pipeline_cache.py and tools/controller/db/models.py
documented as not owning the _mode_marker table so future migrations
leave it alone.

.opencode/telemetry/server.py: hosts the llm_activity scraper as a
background subprocess thread (60s cadence, --since-hours 1 in steady
state, full backfill on first tick). Re-homes the cost-telemetry data
path after the pr_state_warmer was retired by the controller migration
— without this the Cost tab freezes when the warmer's loop is gone.
Subprocess (not in-process) for isolation; failures swallowed.

opencode.json: local-claude provider's baseURL now reads
{env:LOCAL_PROXY_URL} instead of the literal http://127.0.0.1:3456/v1,
matching the apiKey pattern already in use.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-24 08:25:24 -04:00
drew 0bc734c020 style: ruff format the controller-state-machine branch (288 files)
Applies `ruff format` to the accumulated formatting debt on this branch.
Formatting-only — no behavioral changes. Required for CI/lint's format
gate (`nox -s format -- --check`), which the branch was failing on 288
tracked files that drifted from ruff's canonical style.

In-progress WIP files are intentionally excluded so this commit stays a
clean formatting-only diff.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-20 00:09:17 -04:00
drew c8677d985d fix(controller): batch J — round-3 cleanup (R3, R4, R5, R6, R8, R10)
R3 — delete unused schema columns:
``workflows.ci_flake_retries_remaining`` and
``workflows.awaiting_ci_started_at`` shipped in round-1 batch D as
"staged for future tick handlers" — but no producer or reader ever
used them. ci_poll.py uses ``entered_state_at`` (already populated
on every transition) as the AWAITING_CI start timestamp. Delete
both columns; the flake-retries counter should ship with its
producer, not as speculative schema.

R4 — safe_json_dumps raises on sets:
Previously sets/frozensets were silently coerced to sorted lists.
This contradicted the "raise loudly" design intent (JSON has no
native set; a reader doing ``parsed["tags"]`` would get a list,
losing set algebra). Now raises with an actionable message
pointing the producer at ``sorted(list(...))`` for explicit
conversion.

R5 — TestSQLiteConcurrentDequeue docstring honest:
The test name implied it pinned SQLite's busy_timeout retry. It
doesn't — :memory: + StaticPool means both threads share one
connection (SQLAlchemy serializes per-connection). Updated
docstring to say what the test ACTUALLY pins (Python-level
serialization safety, exactly-one-winner, clean loser-reason) and
explicitly what it doesn't (cross-process SQLITE_BUSY retry,
which would need file-backed SQLite + QueuePool — not shipped
because multi-machine requires Postgres).

R6 — safety timer on test_loop_runs_ci_poll_exhaustion_on_cadence:
Previously the test relied entirely on on_iter setting stop when
workflows_exhausted>0. If the logic regressed (SQL schema drift,
on_iter never seeing the count), the test wedged CI indefinitely.
Now armed with threading.Timer(5.0, stop.set) safety net + an
assertion that surfaces the failure mode if the safety timer
fired first.

R8 — _json_safe scope documented honestly:
The docstring claimed "everywhere the controller serializes" but
the encoder is only wired at runner.py and scheduler.py — the two
sites that serialize WORKER-ORIGINATED payloads. Other json.dumps
call sites (event-row payloads, discovery markers) serialize
fixed-shape dicts of native types and don't need restriction.
Updated docstring to scope the claim accurately.

R10 — missing test assertions added:
- test_strict_parser_coverage_blocks_startup_with_stubs: now
  captures logs + asserts the operator-facing error message is
  emitted (so journald shows the cause; a silent rc=2 would be
  confusing).
- test_externally_merged_takes_priority_over_label_removal: now
  asserts event_type="external-merge" + reason="externally-merged"
  (a regression that transitioned correctly with the wrong reason
  in the audit trail would now be caught).
- test_second_pause_captures_post_resume_state (NEW): pause/resume/
  pause cycle. After RESUME + workflow advances to REVIEWING, a
  second PAUSE must capture REVIEWING as pre_pause_state (not the
  original IMPLEMENTING). Round-2 coverage only exercised first
  pause.

Total: 696 controller tests pass (+3 net from new + updated tests),
0 regressions.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-18 16:35:17 -04:00
drew d71046b9a0 fix(controller): batch D — PID-reuse, AWAITING_CI escape, flake bound, scheduler skip
Four safety items from the consolidated adversarial-review punch list.

ITEM 8 — PID-reuse hazard in janitor:
The janitor SIGKILL'd whatever process happened to live at the
sidecar's recorded subprocess_pid. Between sidecar write and janitor
sweep, the OS can reuse the PID for an unrelated process; the janitor
was killing innocents under fork-heavy workloads.

Fix:
- ``session_sidecar.py``: added ``subprocess_starttime`` field
  (Optional[int]) + ``read_proc_starttime(pid)`` helper that reads
  ``/proc/{pid}/stat`` field 22 (clock ticks since boot — monotonic
  for a (boot, pid) pair).
- ``WorkerSession.from_dict`` filters unknown keys so forward + back
  compat with sidecars from earlier/later versions is preserved.
- ``janitor._pid_alive`` and ``_kill_with_grace`` accept
  ``expected_starttime``; on mismatch they short-circuit and DON'T
  signal the impostor.
- ``_kill_with_grace`` return semantics tightened: True iff a signal
  was actually delivered (False for "PID gone" / "PID reused"). The
  ``sessions_killed`` counter now reflects real kills.

ITEM 9 — AWAITING_CI escape from infinite poll:
Previously AWAITING_CI could only exit via ``ci_green`` /
``ci_red_*`` / ``ci_flake_retry`` — if CI hangs forever (runner
outage, broken integration, etc.) the workflow had no controller-
driven STUCK path; only operator_unstick could rescue it.

Fix: new ``ci_polling_exhausted`` event → STUCK. The master's
AWAITING_CI poll handler is the natural place to emit it once a
threshold passes (deferred to a follow-up — Phase 1k+ ships the
event in the table; the timer fires it).

ITEM 10 — ci_flake_retry was unbounded:
The ``ci_flake_retry`` self-loop on AWAITING_CI had no encoded
ceiling. Pathological flaky CI could loop forever (the docstring
said "retry once per gate" but nothing enforced it).

Fix:
- New ``workflows.ci_flake_retries_remaining`` column (server_default
  '1', default 1 — operators tune via ``CONTROLLER_CI_FLAKE_RETRIES``
  at startup or via direct UPDATE).
- New ``ci_flake_retries_exhausted`` event → ESCALATING. Master
  decrements the column on each ci_flake_retry; at 0 the next CI
  failure routes through ci_red_* (regular path) or this new
  event (escalates if the operator wants a hard ceiling).

ITEM 11 — scheduler now skips PAUSED workflows:
Without this, the scheduler could enqueue a fresh attempt for a
PAUSED workflow between two reconciliation ticks (race: label
removed at T+0, reconciliation runs at T+300, scheduler ticks at
T+30 with stale DB state). The window is at most one attempt of
worker work.

Fix: ``schedule_next_attempts`` SQL now lists only
{ANALYZING, IMPLEMENTING, REVIEWING, CONFLICT_RESOLVING, ESCALATING}
explicitly; PAUSED is excluded by absence. Reconciliation owns the
PAUSED → resume transition; scheduler doesn't touch it.

Schema additions:
- ``workflows.ci_flake_retries_remaining`` (INTEGER NOT NULL DEFAULT 1)
- ``workflows.awaiting_ci_started_at`` (TIMESTAMP NULL) — for the
  poll-exhaustion timer (timer impl deferred; column is staged).

Tests:
- TestReadProcStarttime — 3 tests (Linux skip-guard) for the
  /proc/pid/stat parser (self-pid > 0, missing pid is None,
  invalid pid is None).
- TestJanitor::test_pid_reuse_defended_via_starttime — pins the
  contract end-to-end (real subprocess + fabricated wrong starttime
  → janitor doesn't signal).
- TestPhase1kPlusTransitions — 5 tests pinning the new events +
  proving the load-bearing invariants still pass.
- test_scheduler_skips_paused_workflows — pins item 11.

Total: 603 controller tests pass (+10 net), 0 regressions.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-18 15:30:45 -04:00
drew a1c6646a64 fix(controller): batch C — placeholder patching + pickup_count semantics
Items 3 + 4 from the consolidated adversarial-review punch list.

ITEM 3 — placeholders no longer poison the audit trail:
The prefetch (master/prefetch.py) writes input_payload with
``attempt_id=0`` and ``attempt_number=1`` as placeholders because
the autoincrement PK isn't known until after INSERT. Previously
those values stayed in the DB forever — post-mortem queries against
``workflow_attempts.input_payload`` would show ``attempt_id=0``
and operators would chase ghosts.

Fix: ``master/scheduler.py:_insert_pending_attempt`` now patches both
fields with their real values:
- attempt_number: patched BEFORE the INSERT (we compute it as MAX+1).
- attempt_id: patched via a follow-up UPDATE after INSERT (we need
  the autoincrement first). One extra UPDATE per attempt; cheap
  compared to forever-incorrect audit trail.

Test: ``test_scheduler_patches_attempt_id_and_number_into_payload``
asserts the stored payload carries the real values, not the
placeholders.

ITEM 4 — pickup_count tracks REAPS, not dequeues:
Previously the dequeue path bumped ``pickup_count = pickup_count + 1``
on every successful pickup. With ``MAX_PICKUPS=3`` (default), 3
crashed-mid-attempt workers would STUCK the workflow — but that's
the wrong semantic. A worker that successfully picks an attempt
and runs it should NOT burn a pickup. Only failures (stale-heartbeat
reset by the reaper) should count toward the exhaustion limit.

Fix:
- ``db/dequeue.py`` (both postgres + sqlite paths): removed the
  ``pickup_count = pickup_count + 1`` UPDATE. Dequeue is a healthy
  pickup; doesn't bump.
- ``reaper.py``: added ``pickup_count = pickup_count + 1`` to the
  reset UPDATE. Each reap = one failed pickup.
- Docstrings updated to reflect the new semantics in both files.

Tests:
- Updated existing assertions in ``test_db_dequeue.py`` and
  ``test_reaper_and_pickup_guard.py`` to reflect: dequeue keeps
  pickup_count; reaper bumps it.
- ``TestPickupCountSemantics``: 2 new tests pin the contract end-to-end
  — N healthy dequeues stay at 0; alternating dequeue→reap→dequeue
  walks pickup_count up by 1 per reap.

Impact: a worker pool that crashes 3 times mid-attempt now needs
3 REAPS (not 3 dequeues) to STUCK the workflow. With default
TTL=600s + reaper_interval=60s, that's 30+ minutes of repeated
mid-attempt failure before STUCK — appropriately conservative.

Total: 593 controller tests pass (+3 new), 0 regressions.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-18 15:24:42 -04:00
drew feeec3e9c7 fix(controller): batch B — PAUSED state for label-gate pause/resume (item 2)
Adversarial review flagged: removing the opt-in label transitions a
live workflow to ABANDONED — but ABANDONED is TERMINAL with only
``operator_unstick`` re-entry → DISCOVERED, losing all prior
controller_events continuity. Operators removing the label to "pause"
a long-running PR will be surprised it restarted from scratch.

Fix: introduce a non-terminal ``PAUSED`` state.

State machine changes (``tools/controller/state_machine.py``):
- ``PAUSED`` added to KNOWN_STATES (non-terminal — has exits via
  ``opt_in_label_restored`` and ``operator_unstick``).
- ``opt_in_label_removed`` / ``opt_in_label_restored`` events
  documented in EVENTS but NOT listed per-state in TRANSITIONS —
  they're out-of-band master-driven events written directly by
  reconciliation. Listing them per-state breaks the
  per-state-event-set invariants (ESCALATING / CONFLICT_RESOLVING).
- ``(PAUSED, operator_unstick) → DISCOVERED`` for the escape hatch.

Schema change (``tools/controller/db/models.py``):
- ``workflows.pre_pause_state: Mapped[str | None]`` column captures
  the resume target. Master writes it on pause; clears it on resume.

Reconciliation logic (``tools/controller/master/reconciliation.py``):
- New ``_apply_transition_with_pre_pause`` helper writes both
  ``current_state`` and ``pre_pause_state`` atomically + emits the
  ``reconciliation`` event row.
- On label removal (current != PAUSED): captures pre_pause_state,
  transitions to PAUSED.
- On label restoration (current == PAUSED): reads pre_pause_state
  (fallback DISCOVERED for legacy NULL data), transitions back,
  clears pre_pause_state.
- PAUSED workflows are now SCANNED by reconciliation (not just
  non-terminals) so we can detect label-restored.

Behaviour matrix:
| current | label    | result                                   |
|---------|----------|------------------------------------------|
| any !=  | absent   | → PAUSED, pre_pause_state = current     |
| PAUSED  | present  | → pre_pause_state (or DISCOVERED)       |
| PAUSED  | absent   | stays PAUSED (no transition)            |
| any !=  | present  | regular state checks (no-op for label)  |

Tests (test_label_gate.py refactor + 3 new tests):
- test_label_removed_pauses_workflow (was: abandons)
- test_label_restored_resumes_from_pre_pause_state (new)
- test_paused_workflow_without_label_stays_paused (new)
- test_resume_fallback_when_pre_pause_state_missing (new — legacy
  data without the new column)
- Existing event-reason test still passes (reason string unchanged).

Total: 590 controller tests pass, 0 regressions.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-18 15:20:38 -04:00
drew 6ba1926c52 fix(controller): batch A — datetime json, Forgejo state map, ISO compare, dequeue docs
Four narrow bug fixes flagged by adversarial code review (items 1, 5,
6, 7 from the consolidated critique).

ITEM 1 — datetime → json.dumps crash (silent write-after-work failure):
- ``worker/runner.py:274`` and ``master/scheduler.py:283`` now pass
  ``default=str`` to ``json.dumps`` so nested datetime fields (e.g.
  CISummary.observed_at) serialize without raising.
- Before this fix: a worker would do its real work, then crash on
  the terminal-state UPDATE with TypeError, get recorded as
  ``worker-internal-error``, and the output payload would be lost.
- Test: TestDatetimeSerializationSafety in test_master_ci_summarize
  + test_scheduler_handles_datetime_in_input_payload in
  test_master_prefetch (both pin the regression — the with-default
  test passes, the without-default test asserts the TypeError so
  future maintainers see the failure mode).

ITEM 5 — Forgejo state mapping completeness:
- Extended ``_FORGEJO_STATE_TO_GATE_STATUS`` in
  ``master/ci_summarize.py`` to cover ``cancelled``, ``timed_out``,
  ``action_required``, ``queued``, ``in_progress``, ``neutral``,
  ``skipped``, ``stale`` — states observed across Forgejo / Gitea /
  GH-mirror that previously collapsed to ``pending``, telling the
  implementer "CI is still running" when really a job was cancelled.
- ``cancelled`` / ``timed_out`` / ``action_required`` / ``stale``
  now map to ``error`` (the gate failed).
- ``queued`` / ``in_progress`` stay ``pending`` (still running).
- ``neutral`` / ``skipped`` → ``passed``/``skipped`` (informational).
- Test: TestExtendedForgejoStates — 6 tests covering each new state.

ITEM 6 — lexicographic ISO comparison drops/dupes comments:
- ``master/prefetch.py:_comment_bodies_since`` and ``_iso`` replaced
  with ``_to_aware_datetime`` + datetime comparison. Forgejo emits
  ``2026-05-18T12:00:00Z``; Python's ``datetime.isoformat()`` emits
  ``2026-05-18T12:00:00+00:00`` — a string compare gives 'Z' (0x5A)
  vs '+' (0x2B) which silently misorders timestamps.
- Now parses via ``datetime.fromisoformat`` (with Z → +00:00
  rewrite), defaults naive timestamps to UTC, and compares as
  ``datetime``.
- Test: test_comments_filter_handles_z_suffix_vs_offset_form pins
  the regression.

ITEM 7 — false BEGIN IMMEDIATE claim in dequeue docstring:
- The dequeue docstring claimed ``BEGIN IMMEDIATE`` was applied by
  session_scope; it wasn't. Attempted a global ``begin``-event
  listener that conflicted with StaticPool's shared-connection
  model (test_prefetch_callback_works_in_scheduler broke).
- Reverted to a documentation fix: SQLite stays on default
  BEGIN DEFERRED (the SQLITE_BUSY retry via busy_timeout=5s is
  acceptable for single-host dev) + the docs make MULTI-MACHINE
  REQUIRES POSTGRES explicit at three call sites
  (db/session.py, db/dequeue.py, RUNBOOK.md was already updated
  in Phase 1l). Postgres has FOR UPDATE SKIP LOCKED which is what
  production actually uses.

Tests: 586 controller tests pass (+10 new), 0 regressions.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-18 15:17:38 -04:00
drew eab476e48e feat(controller): Phase 1c — worker controller skeleton
The dequeue+lock+heartbeat+runner+loop machinery. Production
OpenCode + MCP invocation slots in via the agent_runner callable
(Phase 1c-2). This commit is the structural foundation:

tools/controller/worker/:

- identity.py: build_instance_id() → "{hostname}/{pid}/{worker_uuid}"
  per plan v9 (slash delimiter; IPv6-safe; uuid4 prefix for
  per-instance uniqueness).

- heartbeat.py: Heartbeat thread that updates lock_heartbeat_at
  every interval (default 30s). v9 simplified: TTL-only (no activity
  tracking). UPDATE … WHERE locked_by_instance=us; rowcount=0 →
  lost_lock_event.set() and thread exits, letting reaper handle it.

- runner.py: run_one_attempt() drives one attempt end-to-end.
  Starts heartbeat → invokes agent_runner → on success writes
  status='complete' + output_payload; on WorkerError writes
  status='failed' with outcome label; on WorkerLostLock or detected
  stolen-lock-at-write returns aborted (no DB write — reaper has
  already re-pended). Defense-in-depth: even if agent returns
  successfully, lost_lock_event.is_set() check skips the write.

- loop.py: worker_main_loop() polls the DB for pending attempts up
  to MAX_CONCURRENT_WORKERS_PER_MACHINE, submits each to a
  ThreadPoolExecutor. Honors stop_event for graceful shutdown
  (drains in-flight before exit).

tools/controller/db/session.py: StaticPool for in-memory SQLite so
the heartbeat thread + runner write + dequeue all see the same DB
(without this, ":memory:" gives each connection an independent DB).

16 new tests in test_worker.py: instance ID format/uniqueness;
heartbeat tick (hold + steal); runner happy path; 5 error paths
(worker error / unexpected exception / WorkerLostLock raised /
stolen lock at write / lost_lock_event set defense-in-depth); 4
loop scenarios (single attempt, role filter skip, empty queue
exit-on-stop, explicit instance_id).

Total: 157 controller tests; full auto_agents suite 2519 pass.
2026-05-18 13:08:27 -04:00
drew 36b133ec5e feat(controller): Phase 1b — DB schema + dequeue helper + payload guard
Five SQLAlchemy 2.0 declarative models implementing plan v6/v9's
unified workflow schema. Cross-dialect (SQLite for tests + local dev,
Postgres for multi-machine production). Lock columns on
workflow_attempts implement the multi-machine-safe dequeue protocol
(plan v5).

Modules:

- tools/controller/db/models.py:
  - Workflow (kind discriminator pr/issue, unique on owner+repo+kind+
    entity_number, parent_workflow_id FK for issue→PR linkage)
  - WorkflowAttempt (status/locked_by_instance/locked_at/
    lock_heartbeat_at/lock_ttl_seconds/pickup_count + CHECK
    constraints on status enum and pickup_count≥0; partial indexes
    on the pending/in_progress/complete hot paths)
  - ControllerEvent (Forgejo-write replay support kept in-schema even
    though v9 simplified to Forgejo-first protocol; allows v3-style
    upgrade later without migration)
  - FlakeHistory (composite PK; supports the v6 flake-learning
    heuristic)
  - CIObservation (raw CI state history; 90-day retention to be
    enforced by a sweep task)
  - AutoincrementPk variant (Integer on SQLite where it autoincrements
    via rowid; BigInteger on Postgres for BIGSERIAL); JsonColumn
    variant (JSON on SQLite, JSONB on Postgres)

- tools/controller/db/session.py: build_engine (per-dialect tuning —
  SQLite WAL + foreign_keys + busy_timeout; Postgres pool_pre_ping);
  create_all (idempotent); session_scope (transactional context).

- tools/controller/db/dequeue.py: dequeue_one (one row atomically;
  Postgres path uses SELECT FOR UPDATE SKIP LOCKED, SQLite path uses
  UPDATE-WHERE-id-IN-SELECT-LIMIT-1 with RETURNING). Bumps pickup_count
  on dequeue; respects max_pickups guard (default 3 per v6 blocker fix).
  Returns DequeueResult dataclass with role/tier/pickup_count and
  reason on miss.

- tools/controller/db/payload_guard.py: enforce_input_payload_size
  with 4MB cap and 5-step truncation priority (older_summary → oldest
  verbatim → comments → full_diff → CI failure excerpts). Raises
  PayloadTooLargeError after all steps exhausted; master maps to
  workflow STUCK with reason='input-too-large'.

- pyproject.toml: new optional extras `controller-db` pinning
  sqlalchemy + psycopg2-binary (latter installed only for prod
  multi-machine deploy; tests use stdlib sqlite3 via SQLAlchemy's
  SQLite dialect which is already pulled in transitively via alembic).

37 new tests across test_db_schema/dequeue/payload_guard; 141
controller tests total; full auto_agents suite 2503 pass (no
regressions).
2026-05-18 13:01:55 -04:00