agnes-the-ai-analyst/services/session_processors/__init__.py
minasarustamyan e26236fdc1
Extract session-pipeline framework + UsageProcessor skeleton (#232)
* Extract session pipeline framework, refactor verification, add UsageProcessor skeleton

Pluggable framework under services/session_pipeline/ (contract + lib + per-processor
runner) so multiple processors can read /data/user_sessions/<key>/*.jsonl on their
own cadence with full failure isolation. Verification flow becomes the first plugin;
a no-op UsageProcessor reserves the second slot pending a separate brainstorm on
extraction logic + storage shape.

Schema v28→v29: rename session_extraction_state → session_processor_state with
composite PK (processor_name, session_file). Existing rows copied over with
processor_name='verification'; legacy table dropped. Migration is idempotent and
no-ops the copy step on fresh installs that came up at the new schema.

Endpoint: /api/admin/run-verification-detector replaced by parametrized
/api/admin/run-session-processor?processor=<name>. Audit action format follows.
Scheduler JOBS: verification-detector entry split into session-processor:verification
+ session-processor:usage. SCHEDULER_VERIFICATION_DETECTOR_INTERVAL retained for
operator compatibility (drives both cadence and health-check grace window);
SCHEDULER_USAGE_PROCESSOR_INTERVAL added.

* Address PR #232 review: scan dead branch + per-processor lock

- `SessionProcessorStateRepository.scan_unprocessed_for` dead else: both
  branches surfaced every jsonl, the SELECT was unused, runner MD5-rehashed
  every stable session per tick. Replaced with an mtime precheck — stable
  sessions (mtime <= processed_at) are filtered at scan; modified files
  still surface for the runner's authoritative `file_hash` invalidation.
  Naive-local comparison matches the existing health-check idiom (DuckDB
  TIMESTAMP strips tz on storage).

- Per-processor advisory lock around `_run_processor` in
  `/api/admin/run-session-processor`. Scheduler tick + manual admin POST
  could otherwise both run, both call create_evidence on overlapping
  detections, and accumulate duplicate verification_evidence rows (the
  dedup short-circuit only covers create+contradiction, not evidence per
  ADR Decision 3). Non-blocking acquire → 409 Conflict on concurrent
  invocation; release in finally so a runner exception doesn't wedge the
  processor.

Tests: two new scan unit tests (mtime filter + post-mark mtime bump), 409
endpoint test, lock-released-on-exception test. Two existing tests updated
for the new "filtered at scan" stat shape (previously asserted skipped == 1,
now scanned == 0).

* Address PR #232 review #2: parallel scheduler tick + last_run on terminal state

Two pre-existing scaffold bugs in services/scheduler/__main__.py amplified
by adding more session-pipeline jobs:

1. Serial for-loop over jobs with synchronous httpx.post(timeout=900) — a
   10-minute verification run blocked every other job (data-refresh,
   health-check, usage, corporate-memory) for the whole window. The PR's
   stated isolation guarantee held inside the runner but broke at the
   scheduler dispatch layer.

2. last_run advanced only when _call_api returned True. Permanent-failure
   jobs hot-looped on every tick (30s) instead of cadence (15min).

Fix: ThreadPoolExecutor.submit per due job + per-job in_flight set so a
long-running job can't be re-launched on subsequent ticks. last_run
advances unconditionally in finally; errors still surface via _call_api
logging + audit_log on the receiving side.

_run_job extracted to module-level for unit testing. New tests:
- TestRunJobBookkeeping: advances on success / failure / unhandled raise
- TestRunLoopParallelism: in_flight protection prevents duplicate
  launches across ticks for a single slow job

---------

Co-authored-by: Minas Arustamyan <arustamyan.minas@gmail.com>
2026-05-08 19:47:46 +02:00

46 lines
1.7 KiB
Python

"""Pluggable session processors for the session-pipeline framework.
Each processor implements the SessionProcessor protocol from
services.session_pipeline.contract and lives in its own module here.
The PROCESSORS list + PROCESSORS_BY_NAME dict are populated lazily so that
processors needing runtime config (LLM extractor, instance config, etc.)
don't fail at import time when those aren't available — relevant for tests
and for instances where the LLM is intentionally unconfigured.
"""
from __future__ import annotations
from functools import lru_cache
from services.session_pipeline.contract import SessionProcessor
from services.session_processors.usage import UsageProcessor
from services.session_processors.verification import build_verification_processor
@lru_cache(maxsize=1)
def _build_registry() -> dict[str, SessionProcessor]:
"""Construct the registry once per process. Verification needs an LLM
extractor which is built from instance config + env, so we delay until
something actually asks for the registry — meaning admin endpoint or
scheduler call, not test imports."""
registry: dict[str, SessionProcessor] = {
"usage": UsageProcessor(),
}
try:
registry["verification"] = build_verification_processor()
except Exception:
# Verification needs an LLM; if construction fails (no API key,
# bad config), the endpoint will report a clean 400 "unknown
# processor" rather than a 500 at import time. The error is logged
# by build_verification_processor.
pass
return registry
def get_processor(name: str) -> SessionProcessor | None:
return _build_registry().get(name)
def list_processor_names() -> list[str]:
return sorted(_build_registry().keys())