fix(sweep): diagnose non-completed triage and migration sessions (#752) - #832
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Included review availability: Your plan provides up to 2 included reviews per hour; 1 remains after this review. WalkthroughNon-completed triage and migration sessions now record diagnostics about ChangesSweep session diagnostics
Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant SweepEngine
participant load_result_document
participant session_events
participant Journal
participant Escalation
SweepEngine->>load_result_document: inspect attempt result.json
SweepEngine->>session_events: collect events for task and launch floor
SweepEngine->>Journal: record failed decision with diagnostic
SweepEngine->>Escalation: append diagnostic suffix to message
Suggested reviewers: Merge Risk: ⚪ Minimal · up to The new failure diagnostics have no established merge-blocking defect. The previously reported unreadable-file classification issue is fixed. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
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| path = _result_path(tasks_dir, task_id) | ||
| if not path.is_file(): |
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On Python 3.14, Path.is_file() suppresses all OSErrors, so an existing result.json behind an unreadable directory or failed metadata lookup returns False here and the new diagnostic reports it as missing rather than unreadable. This repository supports Python 3.14, and sweep.py already uses an explicit stat() probe elsewhere to avoid this version-dependent behavior; this reader should likewise distinguish FileNotFoundError/NotADirectoryError from other metadata failures.
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Fixed in 676f023. load_result_document now checks the path with stat() + S_ISREG instead of is_file(), the same shape as DW-224/248. It returns None only when the file is absent (FileNotFoundError / NotADirectoryError) or not a regular file. Any other metadata error now raises, so the #752 diagnostic reports unreadable on every Python version instead of missing on 3.14. _read_result still turns OSError into None, so the completion read-back behaves the same.
New test: test_load_result_document_raises_a_refused_probe_instead_of_reporting_absence. It makes stat fail and forces Path.is_file to return False (what 3.14 returns), so switching back to is_file() fails the test on every runtime (I checked this by reverting the fix). test_read_result_degrades_an_unreadable_existence_probe now fails the stat probe instead of the is_file one, so it still tests the fallback path.
| diagnostic = self._session_failure_diagnostic( | ||
| task, launch_floor_ns, lambda doc: _triage_verdict(doc, open_now) | ||
| ) |
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When a non-completed triage or migration result has env_fault=True, this diagnostic is generated and journaled, but the subsequent immediate _escalate(..., env_fault_pause_reason(...)) branch runs before the attempt-cap branch that appends _diagnostic_suffix. Consequently the persisted pause reason, story-escalated record, and operator notification omit the new artifact/hook diagnosis for these escalations, despite the changelog promising that non-completed sessions are diagnosed in the escalation as well as the decision journal.
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Fixed in 676f023. The env-fault _escalate calls in both the triage and migration paths now append _diagnostic_suffix(diagnostic), as the attempt-cap escalation already did. The pause reason, the story-escalated record and the ATTENTION notice now carry the result.json and hook-event diagnosis. test_triage_session_env_fault_escalates_then_resume_restores_budget and test_migration_session_env_fault_escalates_without_consuming_attempts now check for the [result.json: missing; hook events: none] suffix. I confirmed both fail with the suffix removed.
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Inline comments:
In `@src/bmad_loop/adapters/generic.py`:
- Around line 260-261: Update the result-file probe near `_result_path` to use
`Path.stat()` and `stat.S_ISREG` instead of `Path.is_file()`. Return `None` only
for `FileNotFoundError`, `NotADirectoryError`, or a non-regular file; allow
other `OSError` exceptions to propagate, and add the `stat` import.
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CHANGELOG.mdsrc/bmad_loop/adapters/generic.pysrc/bmad_loop/diagnostics.pysrc/bmad_loop/signals.pysrc/bmad_loop/sweep.pytests/test_signals.pytests/test_sweep.py
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On a triage or migration session that ends non-completed, journal (and on escalation, name) whether its result.json is missing, malformed or valid against the leg's own validator, and which of THIS attempt's hook events arrived across the primary and legacy channels. Diagnosis only: a valid artifact is never accepted and routing is unchanged. Shares the adapter's result.json reader (load_result_document) and the watcher's event correlation (signals.is_session_event / session_events) rather than re-spelling either.
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…752) load_result_document probes with stat() + S_ISREG instead of is_file(), so a metadata refusal raises (diagnosed "unreadable") on every runtime rather than reading as "missing" on 3.14. The env-fault escalation branches for triage and migration now append the session-failure diagnostic, as the attempt-cap escalation already did.
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| events = session_events( | ||
| events_dir_for(self.paths.project, self.run_dir.name), | ||
| self.run_dir / "events", | ||
| task_id, | ||
| launch_floor_ns, | ||
| ) |
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When [adapter.triage] selects the shipped opencode-http adapter (or another non-hook adapter), this scan always produces hook_events: none: OpencodeHttpAdapter explicitly discards events_dir and declares observation = "sse", so it never writes either event channel even when its SSE lifecycle is functioning normally. The resulting journal and escalation therefore misleadingly suggest missing hook evidence for every non-completed OpenCode triage or migration session; gate this diagnosis on the selected adapter's observation mechanism and report hooks as not applicable (or inspect adapter-specific evidence) instead. The repository explicitly supports adapter classes with distinct transports, so this behavior cannot assume the generic hook path.
AGENTS.md reference: AGENTS.md:L37-L39
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Fixed in 15d8f03. _session_failure_diagnostic now checks the triage adapter's observation before it scans the event channels. If the adapter isn't hook-signal (opencode-http uses sse), hook_events becomes n/a (sse observation) and the scan is skipped, so neither the journal nor the escalation suffix reports none for a relay the adapter never uses. The result.json leg is unchanged, because opencode-http reads its result through the same _ResultFileMixin tasks dir.
New test: test_non_completed_triage_on_a_hookless_adapter_reports_hooks_not_applicable. I removed the gate and confirmed the test fails.
opencode-http observes over SSE and never writes an event channel, so the non-completed-session diagnostic reported `hook events: none` for every session it ran, pointing the operator at a relay it does not use. Gate the event scan on the triage adapter's observation mechanism.
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Refs #752.
Remaining on #752 after this PR: pause without charging an attempt when the event channel is lost, and fail fast when a session receives zero hook events.
Summary
result.jsonis missing, malformed, or valid against that leg's own validator, and which of this attempt's hook events arrived on the primary and legacy channels. On escalation, the escalation also names these. This is diagnosis only: a valid artifact is never accepted, and routing is unchanged.result.jsonreader (load_result_document) and the watcher's event matching (signals.is_session_event/session_events) rather than writing its own versions of either.Notes for reviewers
sweep.pyoverlap with the sweep: status and state.json report policy.toml's [sweep] values, not the run's effective options #815 change in fix(sweep,status): triage-universe validation rules; report effective sweep options (#824, #815) #831, the layer below. sweep: status and state.json report policy.toml's [sweep] values, not the run's effective options #815'sSWEEP_OVERRIDE_KEYS/resolve_sweep_overrideblock comes first, then this layer's_DIAGNOSTIC_TEXT_LIMIT…_diagnostic_suffixhelpers.Stack
Part of a stack; merge bottom-up. This is layer 7 of 8, on top of #831.
Stack order (bottom → top): #826 → #827 → #828 → #829 → #830 → #831 → #832 → #833.
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