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d0ttino-ume-561

d0tTino/UMEcleansinglemerged 2025-07-22MITfix: 1 file, +5 −11 fail-to-pass · 0 pass-to-pass

Results

Model	solved / attempts	median steps	median cost	attempts
GPT-5.6 Luna	6/6	12	$0.009	1✓ 2✓ 3✓ 4✓ 5✓ 6✓
DeepSeek V4 Flash	2/2	63	$0.088	1✓ 2✓
GLM-5.3 Flash	2/2	37	$0.012	1✓ 2✓

The prompt the agent sees

The API starts a background scheduler for periodic event-ledger compaction. When the application shuts down, that scheduler continues running instead of stopping cleanly, leaving the compaction thread alive and potentially preventing process termination. Trigger the API startup and shutdown lifecycle after the compaction scheduler has been started; shutdown should complete without an uncaught cancellation error, and the compaction background thread should no longer be running.

Hidden tests · 1 fail-to-pass, 0 pass-to-passrun after the agent submits, in a clean verifier

test_api_compaction_thread_stops

Test patch · 209 lines

diff --git a/tests/conftest.py b/tests/conftest.py
index a2eb9bda..a1423a75 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -75,6 +75,9 @@ def observe(self, *_: object, **__: object) -> None:
     numpy_stub = types.ModuleType("numpy")
     numpy_stub.asarray = lambda x, dtype=None: list(x)
     sys.modules.setdefault("numpy", numpy_stub)
+    numpy_typing = types.ModuleType("numpy.typing")
+    numpy_typing.NDArray = list  # type: ignore[attr-defined]
+    sys.modules.setdefault("numpy.typing", numpy_typing)
 
 jsonschema_stub = types.ModuleType("jsonschema")
 class _ValidationError(Exception):
@@ -105,6 +108,8 @@ def _validate(*_: object, **__: object) -> None:
     "networkx",
     "grpc",
     "aiosqlite",
+    "pydantic_settings",
+    "pydantic",
 ]
 
 for _package in _OPTIONAL_PACKAGES:
@@ -125,6 +130,33 @@ class _Dummy:
         if _package == "neo4j":
             module.GraphDatabase = object
             module.Driver = object
+        if _package == "structlog":
+            proc = type("P", (), {})
+            module.contextvars = types.SimpleNamespace(
+                merge_contextvars=lambda *_: None
+            )
+            module.processors = types.SimpleNamespace(
+                add_log_level=lambda *_: None,
+                TimeStamper=lambda *_, **__: proc(),
+                JSONRenderer=lambda *_: proc(),
+            )
+            module.dev = types.SimpleNamespace(ConsoleRenderer=lambda *_: proc())
+            module.PrintLoggerFactory = lambda *_: proc()
+            module.make_filtering_bound_logger = (
+                lambda *_: (lambda logger: logger)
+            )
+            module.configure = lambda *_ , **__: None
+        if _package == "pydantic_settings":
+            class _BaseSettings:
+                model_config = {}
+
+                def __init__(self, *_, **__):
+                    pass
+
+            module.BaseSettings = _BaseSettings  # type: ignore[attr-defined]
+            module.SettingsConfigDict = dict
+        if _package == "pydantic":
+            module.Extra = type("Extra", (), {"ignore": "ignore"})
         sys.modules.setdefault(_package, module)
 
 try:
diff --git a/tests/test_api_scheduler.py b/tests/test_api_scheduler.py
new file mode 100644
index 00000000..8361341d
--- /dev/null
+++ b/tests/test_api_scheduler.py
@@ -0,0 +1,146 @@
+import sys
+
+# ruff: noqa: E402
+
+import importlib.util
+from pathlib import Path
+import types
+import pytest
+
+root = Path(__file__).resolve().parents[1]
+package = types.ModuleType("ume")
+package.__path__ = [str(root / "src" / "ume")]
+sys.modules["ume"] = package
+package.VectorStore = object  # type: ignore[attr-defined]
+package.create_vector_store = lambda *_, **__: None
+
+# Provide minimal FastAPI stubs so ume.api can be imported without the real
+# dependency installed.
+fastapi_mod = types.ModuleType("fastapi")
+
+class _FastAPI:
+    def __init__(self, *_: object, **__: object) -> None:
+        self.state = types.SimpleNamespace()
+
+    def on_event(self, *_: object, **__: object):  # pragma: no cover - stub
+        def _wrap(func):
+            return func
+
+        return _wrap
+
+    def middleware(self, *_: object, **__: object):  # pragma: no cover - stub
+        def _wrap(func):
+            return func
+
+        return _wrap
+
+    def include_router(self, *_: object, **__: object) -> None:  # pragma: no cover - stub
+        return None
+
+    def exception_handler(self, *_: object, **__: object):  # pragma: no cover - stub
+        def _wrap(func):
+            return func
+
+        return _wrap
+
+
+fastapi_mod.FastAPI = _FastAPI  # type: ignore[attr-defined]
+fastapi_mod.Request = object  # type: ignore[attr-defined]
+responses_mod = types.ModuleType("fastapi.responses")
+responses_mod.JSONResponse = object  # type: ignore[attr-defined]
+responses_mod.Response = object  # type: ignore[attr-defined]
+exceptions_mod = types.ModuleType("fastapi.exceptions")
+exceptions_mod.RequestValidationError = Exception  # type: ignore[attr-defined]
+sys.modules.setdefault("fastapi", fastapi_mod)
+sys.modules.setdefault("fastapi.responses", responses_mod)
+sys.modules.setdefault("fastapi.exceptions", exceptions_mod)
+
+api_deps_stub = types.ModuleType("ume.api_deps")
+api_deps_stub.POLICY_DIR = root
+api_deps_stub.TOKENS = {}
+api_deps_stub.configure_graph = lambda *_: None
+api_deps_stub.configure_vector_store = lambda *_: None
+api_deps_stub.remove_expired_tokens = lambda: None
+sys.modules.setdefault("ume.api_deps", api_deps_stub)
+
+empty_router = types.SimpleNamespace()
+for _mod in [
+    "graph_routes",
+    "vector_routes",
+    "policy_routes",
+    "auth_routes",
+    "metrics_routes",
+    "dashboard_routes",
+    "pii_routes",
+    "recommendations_routes",
+    "feedback_routes",
+    "snapshot_routes",
+    "ledger_routes",
+]:
+    m = types.ModuleType(f"ume.{_mod}")
+    m.router = empty_router
+    sys.modules.setdefault(f"ume.{_mod}", m)
+
+from ume.event_ledger import EventLedger
+from ume import retention
+
+# Patch FastAPILimiter to avoid optional dependency requirement
+class _DummyLimiter:
+    async def __call__(self, *args, **kwargs):
+        return None
+
+    @classmethod
+    async def init(cls, *args, **kwargs):
+        return None
+
+sys.modules["fastapi_limiter"] = type("m", (), {"FastAPILimiter": _DummyLimiter})
+sys.modules.setdefault(
+    "fastapi_limiter.depends",
+    type(
+        "m",
+        (),
+        {
+            "RateLimiter": type(
+                "RateLimiter",
+                (),
+                {
+                    "__init__": lambda self, *_, **__: None,
+                    "__call__": lambda self, *_, **__: None,
+                },
+            )
+        },
+    ),
+)
+sys.modules.setdefault("sse_starlette", type("m", (), {}))
+sys.modules.setdefault(
+    "sse_starlette.sse",
+    type("m", (), {"EventSourceResponse": object}),
+)
+grpc_util = type("m", (), {"first_version_is_lower": lambda *_: False})
+sys.modules["grpc._utilities"] = grpc_util
+grpc_mod = type("m", (), {"__version__": "1.74.0"})
+sys.modules["grpc"] = grpc_mod
+sys.modules.setdefault("google", type("m", (), {}))
+
+spec_api = importlib.util.spec_from_file_location("ume.api", root / "src" / "ume" / "api.py")
+assert spec_api and spec_api.loader
+api = importlib.util.module_from_spec(spec_api)
+sys.modules["ume.api"] = api
+spec_api.loader.exec_module(api)
+
+
+@pytest.mark.asyncio
+async def test_api_compaction_thread_stops(tmp_path, monkeypatch: pytest.MonkeyPatch) -> None:
+    ledger = EventLedger(str(tmp_path / "ledger.db"))
+    monkeypatch.setattr(sys.modules["ume.event_ledger"], "event_ledger", ledger)
+    monkeypatch.setattr(api.settings, "UME_LEDGER_COMPACTION_INTERVAL", 0.01, raising=False)
+
+    await api._start_token_cleanup()
+    thread = retention._ledger_thread
+    assert thread is not None and thread.is_alive()
+
+    await api._stop_token_cleanup()
+    assert api._ledger_compaction_stop is None
+    assert thread.is_alive() is False
+    retention.stop_ledger_compaction_scheduler()
+    ledger.close()

Reference fix · 1 file, +5 −1the upstream merge, used only for grading calibration

The agent could not see this: the repository holds one commit and the sandbox has no network. Leak audit.

src/ume/api.py

diff --git a/src/ume/api.py b/src/ume/api.py
index 20cc65e2..346cda7a 100644
--- a/src/ume/api.py
+++ b/src/ume/api.py
@@ -175,12 +175,16 @@ async def _stop_token_cleanup() -> None:
         _token_cleanup_task.cancel()
         try:
             await _token_cleanup_task
+        except asyncio.CancelledError:
+            pass
         except Exception:
             pass
         _token_cleanup_task = None
     if _ledger_compaction_stop is not None:
+        _ledger_compaction_stop()
+    else:
         stop_ledger_compaction_scheduler()
-        _ledger_compaction_stop = None
+    _ledger_compaction_stop = None
 
 
 @app.middleware("http")

What each model did

Submitted diff first, then every command. Outputs show 12 lines; expand for the rest.

GPT-5.6 Luna · attempt 3 · solved · 12 steps · $0.008

Submitted diff · 15 lines

diff --git a/src/ume/api.py b/src/ume/api.py
index 20cc65e..87bcfce 100644
--- a/src/ume/api.py
+++ b/src/ume/api.py
@@ -175,6 +175,10 @@ async def _stop_token_cleanup() -> None:
         _token_cleanup_task.cancel()
         try:
             await _token_cleanup_task
+        except asyncio.CancelledError:
+            # Cancellation is the expected way for the cleanup task to stop.
+            # It must not prevent the other shutdown handlers from running.
+            pass
         except Exception:
             pass
         _token_cleanup_task = None

step 1

Plan:

$ ls -la && find . -maxdepth 3 -type f | head -80 && grep -R "compaction\|scheduler\|event-ledger\|event_ledger" -n . --exclude-dir=.git | head -200

output · 24 lines

total 596
drwxr-xr-x 1 root root   4096 Sep 30 17:50 .
drwxr-xr-x 1 root root   4096 Sep 30 17:50 ..
-rw-r--r-- 1 root root    360 Sep 30 17:49 .coveragerc
drwxr-xr-x 1 root root   4096 Sep 30 17:50 .git
drwxr-xr-x 1 root root   4096 Sep 30 17:49 .github
-rw-r--r-- 1 root root   3637 Sep 30 17:49 .gitignore
-rw-r--r-- 1 root root    509 Sep 30 17:49 .pre-commit-config.yaml
-rw-r--r-- 1 root root   3073 Sep 30 17:49 .secrets.baseline
-rw-r--r-- 1 root root   8879 Sep 30 17:49 CHANGELOG.md
-rw-r--r-- 1 root root   5222 Sep 30 17:49 CODE_OF_CONDUCT.md
-rw-r--r-- 1 root root   4772 Sep 30 17:49 CONTRIBUTING.md

12 more lines

-rw-r--r-- 1 root root    349 Sep 30 17:49 Dockerfile.privacy-agent
-rw-r--r-- 1 root root   1070 Sep 30 17:49 LICENSE
-rw-r--r-- 1 root root  44996 Sep 30 17:49 README.md
-rw-r--r-- 1 root root   7411 Sep 30 17:49 ROADMAP.md
drwxr-xr-x 1 root root   4096 Sep 30 17:49 adr
-rwxr-xr-x
…[8629 chars omitted]…
 stop_vector_age_scheduler,
./tests/test_vector_age_scheduler.py:14:def test_vector_age_scheduler_flags(monkeypatch: pytest.MonkeyPatch) -> None:
./tests/test_vector_age_scheduler.py:22:    thread, stop = start_vector_age_scheduler(store, interval_seconds=0.01, log=True)
./tests/test_vector_age_scheduler.py:25:    stop_vector_age_scheduler()
./ume_cli.py:58:        print("Snapshot scheduler stopped.")

step 2

$ find src -type f | sort | grep -E 'api|retention|ledger|app' && grep -R "start_ledger_compaction\|stop_ledger_compaction\|lifespan\|startup\|shutdown" -n src tests --exclude='*.pyc' | head -240

output · 26 lines

src/ume/api.py
src/ume/api_deps.py
src/ume/consent_ledger.py
src/ume/event_ledger.py
src/ume/ledger_routes.py
src/ume/policy/api_client.py
src/ume/retention.py
src/ume/api.py:31:    start_ledger_compaction_scheduler,
src/ume/api.py:32:    stop_ledger_compaction_scheduler,
src/ume/api.py:118:@app.on_event("startup")
src/ume/api.py:145:@app.on_event("startup")
src/ume/api.py:154:    _, stop = start_ledger_compaction_scheduler(

14 more lines

src/ume/api.py:162:@app.on_event("shutdown")
src/ume/api.py:170:@app.on_event("shutdown")
src/ume/api.py:182:        stop_ledger_compaction_scheduler()
src/ume/auto_snapshot.py:21:    """Enable periodic snapshotting and snapshot on shutdown.
src/ume/auto_snapshot.py:33:        except Exception:  # pragma: no cover - don't raise during shutdown
src/ume/consumer_demo.py:36:    The loop handles Kafka errors and provides a graceful shutdown
src/ume/retention.py:160:de
…[499 chars omitted]…
e at shutdown
tests/test_privacy_agent.py:159:    # Flush should be called once when batch size reached and once at shutdown
tests/test_retention.py:30:    start_ledger_compaction_scheduler,
tests/test_retention.py:31:    stop_ledger_compaction_scheduler,
tests/test_retention.py:218:    thread, stop = start_ledger_compaction_scheduler(
tests/test_retention.py:223:    stop_ledger_compaction_scheduler()

step 3

$ sed -n '1,240p' src/ume/api.py; sed -n '1,270p' src/ume/retention.py; sed -n '1,280p' tests/test_retention.py; find tests -maxdepth 1 -type f | grep -E 'api|lifecycle'

output · 46 lines

"""HTTP API exposing graph queries and analytics."""

from __future__ import annotations

import logging
import time
import asyncio
from typing import Any, Awaitable, Callable, cast
from collections import defaultdict

try:  # pragma: no cover - optional dependency
    import redis

34 more lines

except Exception:  # pragma: no cover - allow tests without redis installed
    redis = None
from fastapi_limiter import FastAPILimiter

from .config import settings
from .logging_utils import configure_logging
from .tracing import configure_tracing, is_tracing_enabled

try:  # pragma: no cover - optional dependency
    from opentelemetry import trace
except Exception:  # pragma: no cover - allow tests without opentelemetry installed
    trace = None
from fastapi import FastAPI, Request
from fastapi.exceptions import RequestValidationError
from fastapi.responses import JSONResponse, Response

from .metrics 
…[8630 chars omitted]…
er()

    assert [o for o, _ in ledger.range()] == [2, 3, 4]
tests/test_api.py
tests/test_api_consent.py
tests/test_api_events.py
tests/test_api_graph_history.py
tests/test_api_ledger.py
tests/test_api_mutations.py
tests/test_api_policies.py
tests/test_api_rbac.py
tests/test_api_redact_endpoints.py
tests/test_api_reference.py
tests/test_api_snapshot.py
tests/test_policy_api.py
tests/test_vector_api.py

step 4

$ grep -R "_start_token_cleanup\|_stop_token_cleanup\|lifespan\|AsyncClient\|compaction" -n tests/test_api.py tests | head -100

output · 9 lines

tests/test_api.py:311:def test_api_ledger_compaction(monkeypatch: MonkeyPatch, tmp_path: Path) -> None:
tests/integration/test_integration_clients.py:112:            lg._client = httpx.AsyncClient(transport=httpx.ASGITransport(app), base_url=str(client.base_url))
tests/integration/test_integration_clients.py:120:            lt._client = httpx.AsyncClient(transport=httpx.ASGITransport(app), base_url=str(client.base_url))
tests/test_api.py:311:def test_api_ledger_compaction(monkeypatch: MonkeyPatch, tmp_path: Path) -> None:
tests/test_retention.py:30:    start_ledger_compaction_scheduler,
tests/test_retention.py:31:    stop_ledger_compaction_scheduler,
tests/test_retention.py:208:def test_ledger_compaction_scheduler(tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
tests/test_retention.py:218:    thread, stop = start_ledger_compaction_scheduler(
tests/test_retention.py:223:    stop_ledger_compaction_scheduler()

step 5

$ sed -n '280,340p' tests/test_api.py; python - <<'PY'

output · 37 lines

client = TestClient(app, raise_server_exceptions=False)

    with caplog.at_level("ERROR"):
        res = client.get(
            "/query",
            params={"cypher": "MATCH (n)"},
            headers={"Authorization": f"Bearer {_token(client)}"},
        )

    assert res.status_code == 500
    assert any(rec.exc_info for rec in caplog.records)
    assert any(

25 more lines

        "Unhandled exception while processing request" in rec.getMessage()
        for rec in caplog.records
    )


def test_token_cleanup_task(monkeypatch: MonkeyPatch) -> None:
    from ume import api as api_mod

    monkeypatch.setattr(api_mod, "TOKEN_CLEANUP_INTERVAL", 0.01)
    monkeypatch.setattr(settings, "UME_OAUTH_TTL", 0.02)

    with TestClient(app) as client:
        token = _token(client)
        assert token in deps.TOKENS
        time.sleep(0.05)
        assert token not in deps.TOKENS


def test_api_led
…[2267 chars omitted]…
thon(data, self_instance=self)
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
pydantic_core._pydantic_core.ValidationError: 1 validation error for Settings
  Value error, UME_AUDIT_SIGNING_KEY must be set to a non-default value [type=value_error, input_value={}, input_type=dict]
    For further information visit https://errors.pydantic.dev/2.13/v/value_error

step 6

$ UME_AUDIT_SIGNING_KEY=test-key python - <<'PY'

output · 41 lines

Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
  File "/repo/src/ume/__init__.py", line 206, in __getattr__
    module = import_module(f"{__name__}.{name}")
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/importlib/__init__.py", line 90, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/repo/src/ume/api.py", line 15, in <module>
    from fastapi_limiter import FastAPILimiter
ImportError: cannot import name 'FastAPILimiter' from 'fastapi_limiter' (/usr/local/lib/python3.12/site-packages/fastapi_limiter/__init__.py)
[tool.poetry]

29 more lines

name = "ume"
version = "0.1.0"
description = ""
authors = ["Ume Bot <ume-bot@example.com>"]
readme = "README.md"
packages = [
    {include = "ume", from = "src"},
    {include = "ume_client", from =
…[1415 chars omitted]…
grpc_server = ["grpcio"]

[tool.poetry.scripts]
produce_demo = "ume.producer_demo:main"
ume-cli = "ume_cli:main"
ume = "ume.__main__:main"
compile-protos = "scripts.compile_protos:main"


[tool.ruff]
line-length = 88
exclude = [
    "src/ume/proto/*",
    "src/ume_client/ume_pb2*.py",
    "src/ume_client/*_pb2*.py",
]

[build-system]
requires = ["poetry-core"]
build-backend = "poetry.core.masonry.api"

step 7

$ python - <<'PY'

output · 15 lines

diff --git a/src/ume/api.py b/src/ume/api.py
index 20cc65e..87bcfce 100644
--- a/src/ume/api.py
+++ b/src/ume/api.py
@@ -175,6 +175,10 @@ async def _stop_token_cleanup() -> None:
         _token_cleanup_task.cancel()
         try:
             await _token_cleanup_task
+        except asyncio.CancelledError:
+            # Cancellation is the expected way for the cleanup task to stop.
+            # It must not prevent the other shutdown handlers from running.
+            pass

3 more lines

         except Exception:
             pass
         _token_cleanup_task = None

step 8

$ UME_AUDIT_SIGNING_KEY=test-key pytest -q tests/test_retention.py tests/test_api.py -q --disable-warnings --maxfail=1", "timeout":120}},{

output · 1 lines

(command exceeded 600s)

step 9

$ ps aux | grep -E 'pytest|python' | grep -v grep || true; UME_AUDIT_SIGNING_KEY=test-key timeout 60 pytest -q tests/test_retention.py::test_ledger_compaction_scheduler --disable-warnings -s; echo status:$?; git diff --check

output · 4 lines

bash: line 6: ps: command not found
.
1 passed, 3 warnings in 0.58s
status:0

step 10

$ UME_AUDIT_SIGNING_KEY=test-key timeout 90 pytest -q tests/test_api.py::test_api_ledger_compaction --disable-warnings -s; echo status:$?; UME_AUDIT_SIGNING_KEY=test-key timeout 90 pytest -q tests/test_api.py::test_token_cleanup_task --disable-warnings -s; echo status:$?

output · 28 lines

ERROR: found no collectors for /repo/tests/test_api.py::test_api_ledger_compaction


==================================== ERRORS ====================================
______________________ ERROR collecting tests/test_api.py ______________________
ImportError while importing test module '/repo/tests/test_api.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/local/lib/python3.12/importlib/__init__.py:90: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
tests/test_api.py:13: in <module>

16 more lines

    from ume.api import app, configure_graph, configure_vector_store
src/ume/api.py:15: in <module>
    from fastapi_limiter import FastAPILimiter
E   ImportError: cannot import name 'FastAPILimiter' from 'fastapi_limiter' (/usr/local/lib/python3.12/site-packages/fastapi_l
…[1379 chars omitted]…
_cleanup() -> None:
         _token_cleanup_task.cancel()
         try:
             await _token_cleanup_task
+        except asyncio.CancelledError:
+            # Cancellation is the expected way for the cleanup task to stop.
+            # It must not prevent the other shutdown handlers from running.
+            pass
         except Exception:
             pass
         _token_cleanup_task = None

step 11

$ UME_AUDIT_SIGNING_KEY=test-key pytest -q tests/test_retention.py --disable-warnings --maxfail=1; python -m compileall -q src/ume/api.py; git status --short; git diff --check

output · 3 lines

..........                                                               [100%]
10 passed, 12 warnings in 0.63s
 M src/ume/api.py

step 13

$ done: {"notes": "Implemented explicit asyncio.CancelledError handling during API shutdown so cleanup proceeds to stop the ledger compaction scheduler. Retention tests pass; API test collection is blocked by the environment's incompatible fastapi_limiter package."}

output · 1 lines

submitted.

GPT-5.6 Luna · attempt 4 · solved · 9 steps · $0.007

Submitted diff · 22 lines

diff --git a/src/ume/api.py b/src/ume/api.py
index 20cc65e..b545763 100644
--- a/src/ume/api.py
+++ b/src/ume/api.py
@@ -175,9 +175,16 @@ async def _stop_token_cleanup() -> None:
         _token_cleanup_task.cancel()
         try:
             await _token_cleanup_task
+        except asyncio.CancelledError:
+            # ``CancelledError`` inherits from ``BaseException``.  It is the
+            # expected result of awaiting the task we just cancelled, and must
+            # not prevent the other shutdown handlers from running.
+            pass
         except Exception:
+            # Keep shutdown best-effort if the cleanup task itself failed.
             pass
-        _token_cleanup_task = None
+        finally:
+            _token_cleanup_task = None
     if _ledger_compaction_stop is not None:
         stop_ledger_compaction_scheduler()
         _ledger_compaction_stop = None

step 1

Plan:

$ pwd; find . -maxdepth 2 -type f | head -80; grep -R "compaction\|scheduler\|event-ledger\|event_ledger" -n . --exclude-dir=.git | head -200

output · 47 lines

/repo
./.coveragerc
./.git/COMMIT_EDITMSG
./.git/config
./.git/description
./.git/HEAD
./.git/index
./.github/dependabot.yml
./.github/merge_queue.yml
./.github/pull_request_template.md
./.gitignore
./.pre-commit-config.yaml

35 more lines

./.secrets.baseline
./adr/0001-memory-storage.md
./CHANGELOG.md
./codex_setup.sh
./CODE_OF_CONDUCT.md
./CONTRIBUTING.md
./docker/docker-compose.yml
./docker/Dockerfile.api
./docker/generate-certs.sh
./docker/setup-redpanda-acls.sh
./Dockerfile.privacy-agent
./docs/ACCESS_CONTROL.md
./docs/AGING_SCHEDULERS.md
./docs/ANGEL_BRIDGE.md
./docs/API_REFERENCE.md
./docs/ARCHITECTURE_OVERVIEW.md
./docs/CONFIG_TEMPLATES.md
./docs/DAG_EXECUTOR.md
./docs/ENV_EXAMPLE.md
./docs/FEDERATION.md
./docs/GRAPH_LISTENERS.md
./docs/GRAPH_MODEL.md
./docs/INTEGRATIONS.md
./docs/LLM_FERRY.md
./docs/MONITORING.md
./docs/SELF_HOSTED_RUNNER.md
./docs/SSL_SETUP.md
./docs/VECTOR_BENCHMARKS.md
.
…[8629 chars omitted]…
 stop_vector_age_scheduler,
./tests/test_vector_age_scheduler.py:14:def test_vector_age_scheduler_flags(monkeypatch: pytest.MonkeyPatch) -> None:
./tests/test_vector_age_scheduler.py:22:    thread, stop = start_vector_age_scheduler(store, interval_seconds=0.01, log=True)
./tests/test_vector_age_scheduler.py:25:    stop_vector_age_scheduler()
./ume_cli.py:58:        print("Snapshot scheduler stopped.")

step 2

$ cat pyproject.toml | sed -n '1,180p'; git status --short

output · 55 lines

[tool.poetry]
name = "ume"
version = "0.1.0"
description = ""
authors = ["Ume Bot <ume-bot@example.com>"]
readme = "README.md"
packages = [
    {include = "ume", from = "src"},
    {include = "ume_client", from = "src"},
    {include = "ume/py.typed", from = "src"},
    {include = "ume_client/py.typed", from = "src"},
]

43 more lines

[tool.poetry.dependencies]
python = ">=3.10,<3.13"
confluent-kafka = ">=2.4"
fastavro = ">=1.9"
pyyaml = "*" # Using "*" for PyYAML as it's a common practice, but can be pinned down if needed.
neo4j = "*"
networkx = "*"
# Required for analytics calculations in tests
numpy = "*"
# Structured logging
structlog = "*"
# FastAPI >=0.110 requires Pydantic v2 which is compatible with
# pydantic-settings 2.x, so we pin within the current major release.
fastapi = ">=0.110,<1"
jsonschema = "*"
faust-streaming = "*"
faiss-cpu = "*"
protobuf = ">=6,<7"

pydantic = ">=2"
pydantic-
…[730 chars omitted]…
grpc_server = ["grpcio"]

[tool.poetry.scripts]
produce_demo = "ume.producer_demo:main"
ume-cli = "ume_cli:main"
ume = "ume.__main__:main"
compile-protos = "scripts.compile_protos:main"


[tool.ruff]
line-length = 88
exclude = [
    "src/ume/proto/*",
    "src/ume_client/ume_pb2*.py",
    "src/ume_client/*_pb2*.py",
]

[build-system]
requires = ["poetry-core"]
build-backend = "poetry.core.masonry.api"

step 3

$ sed -n '135,205p' src/ume/api.py; sed -n '1,90p' src/ume/retention.py; sed -n '285,340p' tests/test_api.py; grep -R "CancelledError\|cancel.*error" -n tests src/ume/api.py

output · 32 lines

async def _token_cleanup_loop(interval: float) -> None:
    """Periodically remove expired entries from ``TOKENS``."""
    try:
        while True:
            await asyncio.sleep(interval)
            api_deps.remove_expired_tokens()
    except asyncio.CancelledError:  # pragma: no cover - task cancelled
        pass


@app.on_event("startup")
async def _start_token_cleanup() -> None:

20 more lines

    """Launch background task for expired token cleanup."""
    from .event_ledger import event_ledger

    global _token_cleanup_task, _ledger_compaction_stop
    interval = min(TOKEN_CLEANUP_INTERVAL, settings.UME_OAUTH_TTL)
    _token_cleanup_task = asyncio.create_task(_token_cleanup_loop(interval))

    _, stop = start_ledger_compaction_scheduler(
        event_ledger,
        interval_seconds=settings.UME_LEDGER_COMPACTION_INTERVAL,
        offset_window=settings.UME_LEDGER_OFFSET_WINDOW,
    )
   
…[6985 chars omitted]…
yncio.CancelledError:
tests/test_grpc_streaming.py:141:        except asyncio.CancelledError:
tests/test_grpc_streaming.py:200:        except asyncio.CancelledError:
tests/test_grpc_streaming.py:257:        except asyncio.CancelledError:
tests/test_ingest_consistency.py:131:        except asyncio.CancelledError:
src/ume/api.py:141:    except asyncio.CancelledError:  # pragma: no cover - task cancelled

step 4

$ pytest -q tests/test_api.py::test_api_ledger_compaction tests/test_retention.py::test_ledger_compaction_scheduler --disable-warnings --maxfail=1 -o addopts=''

output · 25 lines

ERROR: found no collectors for /repo/tests/test_api.py::test_api_ledger_compaction


==================================== ERRORS ====================================
______________________ ERROR collecting tests/test_api.py ______________________
ImportError while importing test module '/repo/tests/test_api.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/local/lib/python3.12/importlib/__init__.py:90: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
tests/test_api.py:13: in <module>

13 more lines

    from ume.api import app, configure_graph, configure_vector_store
src/ume/api.py:15: in <module>
    from fastapi_limiter import FastAPILimiter
E   ImportError: cannot import name 'FastAPILimiter' from 'fastapi_limiter' (/usr/local/lib/python3.12/site-packages/fastapi_l
…[603 chars omitted]…
pytest/main.py:693: in pytest_collectstart
    raise self.Failed(self.shouldfail)
E   _pytest.main.Failed: stopping after 1 failures
=========================== short test summary info ============================
ERROR tests/test_api.py
ERROR  - _pytest.main.Failed: stopping after 1 failures
!!!!!!!!!!!!!!!!!!!!!!!!!! stopping after 2 failures !!!!!!!!!!!!!!!!!!!!!!!!!!!
3 warnings, 2 errors in 0.84s

step 5

$ python - <<'PY'

output · 20 lines

diff --git a/src/ume/api.py b/src/ume/api.py
index 20cc65e..979242b 100644
--- a/src/ume/api.py
+++ b/src/ume/api.py
@@ -175,9 +175,13 @@ async def _stop_token_cleanup() -> None:
         _token_cleanup_task.cancel()
         try:
             await _token_cleanup_task
-        except Exception:
+        except asyncio.CancelledError:
+            # ``CancelledError`` inherits from ``BaseException``.  It is the
+            # expected result of awaiting the task we just cancelled, and must

8 more lines

+            # not prevent the other shutdown handlers from running.
             pass
-        _token_cleanup_task = None
+        finally:
+            _token_cleanup_task = None
     if _ledger_compaction_stop is not None:
         stop_ledger_compaction_scheduler()
         _ledger_compaction_stop = None

step 6

$ python - <<'PY'

output · 2 lines

.                                                                        [100%]
1 passed, 3 warnings in 0.50s

step 7

$ python - <<'PY'

output · 35 lines

store = getattr(app.state, "vector_store", None)
    if store is not None and hasattr(store, "close"):
        store.close()


@app.on_event("shutdown")
async def _stop_token_cleanup() -> None:
    """Cancel the background token cleanup task if running."""
    global _token_cleanup_task, _ledger_compaction_stop
    if _token_cleanup_task is not None:
        _token_cleanup_task.cancel()
        try:

23 more lines

            await _token_cleanup_task
        except asyncio.CancelledError:
            # ``CancelledError`` inherits from ``BaseException``.  It is the
            # expected result of awaiting the task we just cancelled, and must
            # not prevent the other shutdown handlers from running.
            pass
        except Exception:
            # Keep shutdown best-effort if the cleanup task itself failed.
            pass
        finally:
            _token_cleanup_task = Non
…[752 chars omitted]…
 the other shutdown handlers from running.
+            pass
         except Exception:
+            # Keep shutdown best-effort if the cleanup task itself failed.
             pass
-        _token_cleanup_task = None
+        finally:
+            _token_cleanup_task = None
     if _ledger_compaction_stop is not None:
         stop_ledger_compaction_scheduler()
         _ledger_compaction_stop = None

step 8

$ pytest -q tests/test_retention.py --disable-warnings --maxfail=1 -o addopts=''; git status --short

output · 3 lines

..........                                                               [100%]
10 passed, 12 warnings in 0.68s
 M src/ume/api.py

step 10

$ done: {"notes": "Implemented explicit asyncio.CancelledError handling and guaranteed cleanup-task reference reset during API shutdown, allowing ledger compaction scheduler shutdown to complete. Retention tests pass; API test collection is blocked by the environment's incompatible fastapi_limiter package."}

output · 1 lines

submitted.

GPT-5.6 Luna · attempt 5 · solved · 13 steps · $0.012

Submitted diff · 38 lines

diff --git a/src/ume/api.py b/src/ume/api.py
index 20cc65e..ae04777 100644
--- a/src/ume/api.py
+++ b/src/ume/api.py
@@ -171,16 +171,24 @@ def _close_vector_store() -> None:
 async def _stop_token_cleanup() -> None:
     """Cancel the background token cleanup task if running."""
     global _token_cleanup_task, _ledger_compaction_stop
-    if _token_cleanup_task is not None:
-        _token_cleanup_task.cancel()
-        try:
-            await _token_cleanup_task
-        except Exception:
-            pass
+    try:
+        if _token_cleanup_task is not None:
+            _token_cleanup_task.cancel()
+            try:
+                await _token_cleanup_task
+            except asyncio.CancelledError:
+                # Cancellation is the expected way for this task to stop.
+                pass
+            except Exception:
+                # Preserve shutdown behavior for unexpected task failures.
+                pass
+    finally:
         _token_cleanup_task = None
-    if _ledger_compaction_stop is not None:
-        stop_ledger_compaction_scheduler()
-        _ledger_compaction_stop = None
+        # Keep scheduler cleanup in a finally block: awaiting a cancelled
+        # asyncio task must not prevent the thread from being joined.
+        if _ledger_compaction_stop is not None:
+            stop_ledger_compaction_scheduler()
+            _ledger_compaction_stop = None
 
 
 @app.middleware("http")

step 1

Plan:

$ ls -la && find . -maxdepth 3 -type f | head -200 && grep -R "compaction\|scheduler\|event ledger\|event_ledger" -n . --exclude-dir=.git | head -200

output · 24 lines

total 596
drwxr-xr-x 1 root root   4096 Sep 30 18:03 .
drwxr-xr-x 1 root root   4096 Sep 30 18:03 ..
-rw-r--r-- 1 root root    360 Sep 30 18:03 .coveragerc
drwxr-xr-x 1 root root   4096 Sep 30 18:03 .git
drwxr-xr-x 1 root root   4096 Sep 30 18:03 .github
-rw-r--r-- 1 root root   3637 Sep 30 18:03 .gitignore
-rw-r--r-- 1 root root    509 Sep 30 18:03 .pre-commit-config.yaml
-rw-r--r-- 1 root root   3073 Sep 30 18:03 .secrets.baseline
-rw-r--r-- 1 root root   8879 Sep 30 18:03 CHANGELOG.md
-rw-r--r-- 1 root root   5222 Sep 30 18:03 CODE_OF_CONDUCT.md
-rw-r--r-- 1 root root   4772 Sep 30 18:03 CONTRIBUTING.md

12 more lines

-rw-r--r-- 1 root root    349 Sep 30 18:03 Dockerfile.privacy-agent
-rw-r--r-- 1 root root   1070 Sep 30 18:03 LICENSE
-rw-r--r-- 1 root root  44996 Sep 30 18:03 README.md
-rw-r--r-- 1 root root   7411 Sep 30 18:03 ROADMAP.md
drwxr-xr-x 1 root root   4096 Sep 30 18:03 adr
-rwxr-xr-x
…[8630 chars omitted]…
 stop_vector_age_scheduler,
./tests/test_vector_age_scheduler.py:14:def test_vector_age_scheduler_flags(monkeypatch: pytest.MonkeyPatch) -> None:
./tests/test_vector_age_scheduler.py:22:    thread, stop = start_vector_age_scheduler(store, interval_seconds=0.01, log=True)
./tests/test_vector_age_scheduler.py:25:    stop_vector_age_scheduler()
./ume_cli.py:58:        print("Snapshot scheduler stopped.")

step 2

$ sed -n '1,280p' tests/test_retention.py; grep -R "FastAPI\|TestClient\|app =" -n tests | head -100

output · 45 lines

# mypy: ignore-errors
from __future__ import annotations
# ruff: noqa: E402

import sys
import types
from pathlib import Path

import pytest
import sqlite3
import time
import logging

33 more lines

from typing import Callable

sys.path.insert(0, str(Path(__file__).resolve().parents[1] / "src"))

pkg_root = Path(__file__).resolve().parents[1] / "src" / "ume"
if "ume" not in sys.modules:
    stub = types.ModuleType("ume")
    stub.__path__ = [str(pkg_root)]
    sys.modules["ume"] = stub

from ume.config import settings
from ume.persistent_graph import PersistentGraph
from ume.retention import (
    start_retention_scheduler,
    stop_retention_scheduler,
    start_vector_age_scheduler,
    stop_vector_age_scheduler,
    start_ledger_compaction_scheduler,
    stop_ledger_compaction_scheduler,
    _check_stale_vectors,
)
import ume.retention as retention
from ume.metrics import STALE_VECTOR_WARNINGS


d
…[8629 chars omitted]…
= TestClient(app)
tests/test_reliability.py:54:    client = TestClient(app)
tests/test_reliability.py:77:    client = TestClient(app)
tests/test_snapshot_routes.py:8:from fastapi.testclient import TestClient
tests/test_snapshot_routes.py:18:sys.modules.setdefault("fastapi_limiter", type("m", (), {"FastAPILimiter": _DummyLimiter}))
tests/test_snapshot_routes.py:55:def _token(client: TestClient) -> str:

step 3

$ sed -n '190,245p' tests/test_retention.py; grep -R "on_event\|startup" -n tests/test_api* | head -100

output · 36 lines

self.target = target
            self.started = False
        def start(self) -> None:
            self.started = True
            self.target()
        def join(self) -> None:
            self.started = False
        def is_alive(self) -> bool:
            return self.started

    monkeypatch.setattr(retention, "threading", types.SimpleNamespace(Thread=DummyThread, Event=DummyEvent))
    thread1, stop1 = start_vector_age_scheduler(store, interval_seconds=0.01)

24 more lines

    thread2, stop2 = start_vector_age_scheduler(store, interval_seconds=0.01)
    stop1()
    stop_vector_age_scheduler()
    assert thread1 is thread2


def test_ledger_compaction_scheduler(tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
    from ume.event_ledger import EventLedger

    ledger = EventLedger(str(tmp_path / "ledger.db"))
    for i in range(5):
        ledger.append(i, {"event_type": "E", "timestamp": i})
    ledger.update_bookmark(4)

    monkeypatch.setattr(settings, "UME_LEDGER_OFFSET_WINDOW", 2)

    thread, stop = start_ledger_compaction_scheduler(
        ledger, interval_seconds=0.01, offset_window=2
    )
    time.sleep(0.02)
    stop()
    stop_ledger_compaction_scheduler()

    assert [o for o, _ in ledger.range()] == [2, 3, 4]

step 4

The lifecycle code reveals the likely failure: shutdown cancels the asyncio token-cleanup task, but catches only `Exception`. `asyncio.CancelledError` is a `BaseException` on supported Python versions, so shutdown exits before calling `stop_ledger_compaction_scheduler()`. I’ll reproduce this with the API lifecycle and inspect thread state, then make the cancellation handling explicit so scheduler cleanup always runs.

$ PYTHONPATH=src python - <<'PY'

output · 23 lines

Edit the generated .env file to replace the placeholder UME_AUDIT_SIGNING_KEY.
Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
  File "/repo/src/ume/__init__.py", line 13, in <module>
    config, Settings = load_config(__name__)
                       ^^^^^^^^^^^^^^^^^^^^^
  File "/repo/src/ume/bootstrap/config.py", line 15, in load_config
    config = importlib.import_module(".config", package)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/importlib/__init__.py", line 90, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

11 more lines

  File "/repo/src/ume/config/__init__.py", line 118, in <module>
    settings = load_settings()
               ^^^^^^^^^^^^^^^
  File "/repo/src/ume/config/loader.py", line 7, in load_settings
    return 
…[377 chars omitted]…
thon(data, self_instance=self)
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
pydantic_core._pydantic_core.ValidationError: 1 validation error for Settings
  Value error, UME_AUDIT_SIGNING_KEY must be set to a non-default value [type=value_error, input_value={}, input_type=dict]
    For further information visit https://errors.pydantic.dev/2.13/v/value_error

step 5

$ grep -R "UME_AUDIT_SIGNING_KEY" -n tests .env* 2>/dev/null | head; sed -n '1,80p' tests/conftest.py 2>/dev/null || true; python - <<'PY'

output · 21 lines

tests/conftest.py:12:os.environ.setdefault("UME_AUDIT_SIGNING_KEY", "test-key")
tests/conftest.py:230:    orig_key = os.environ.get("UME_AUDIT_SIGNING_KEY")
tests/conftest.py:241:        os.environ.setdefault("UME_AUDIT_SIGNING_KEY", "test-key")
tests/conftest.py:243:        os.environ["UME_AUDIT_SIGNING_KEY"] = orig_key
tests/perf/test_stream_throughput.py:20:    UME_AUDIT_SIGNING_KEY: str = "test-key"
tests/test_api_reference.py:7:os.environ.setdefault("UME_AUDIT_SIGNING_KEY", "test-key")
tests/test_async_client_auth.py:14:os.environ.setdefault("UME_AUDIT_SIGNING_KEY", "test-key")
tests/test_audit_logging.py:4:os.environ.setdefault("UME_AUDIT_SIGNING_KEY", "test-key")
tests/test_cli_env.py:25:    assert "UME_AUDIT_SIGNING_KEY=new-key" in content
tests/test_cli_env.py:39:        "UME_AUDIT_SIGNING_KEY=default-key\n"  # pragma: allowlist secret
from __future__ import annotations

9 more lines

impo
…[2599 chars omitted]…
:
(<class 'asyncio.exceptions.CancelledError'>, <class 'BaseException'>, <class 'object'>)
Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
  File "/repo/src/ume/api.py", line 15, in <module>
    from fastapi_limiter import FastAPILimiter
ImportError: cannot import name 'FastAPILimiter' from 'fastapi_limiter' (/usr/local/lib/python3.12/site-packages/fastapi_limiter/__init__.py)

step 6

$ pytest -q tests/test_retention.py tests/test_api_reference.py --disable-warnings --maxfail=1 2>&1 | tail -80; git status --short

output · 23 lines

..........F
=================================== FAILURES ===================================
_________________________ test_documented_routes_exist _________________________

    def test_documented_routes_exist() -> None:
        text = Path("docs/API_REFERENCE.md").read_text()
        pattern = re.compile(r"^###\s+([A-Z]+)\s+`([^`]+)`", re.MULTILINE)
        documented = {(m, _normalize(p)) for m, p in pattern.findall(text)}
    
        actual = {
            (m, _normalize(route.path))
            for route in app.router.routes

11 more lines

>           for m in route.methods
                     ^^^^^^^^^^^^^
            if m in {"GET", "POST", "DELETE", "PATCH", "PUT"}
        }
E       AttributeError: '_IncludedRouter' object has no attribute 'methods'

tests/test_api_reference.py:47: AttributeError
=========================== short test summary info ============================
FAILED tests/test_api_reference.py::test_documented_routes_exist - AttributeE...
!!!!!!!!!!!!!!!!!!!!!!!!!! stopping after 1 failures !!!!!!!!!!!!!!!!!!!!!!!!!!!
1 failed, 10 passed, 21 warnings in 2.09s

step 7

$ python - <<'PY'

output · 37 lines

diff --git a/src/ume/api.py b/src/ume/api.py
index 20cc65e..78c6883 100644
--- a/src/ume/api.py
+++ b/src/ume/api.py
@@ -171,16 +171,21 @@ def _close_vector_store() -> None:
 async def _stop_token_cleanup() -> None:
     """Cancel the background token cleanup task if running."""
     global _token_cleanup_task, _ledger_compaction_stop
-    if _token_cleanup_task is not None:
-        _token_cleanup_task.cancel()
-        try:
-            await _token_cleanup_task

25 more lines

-        except Exception:
-            pass
+    try:
+        if _token_cleanup_task is not None:
+            _token_cleanup_task.cancel()
+            try:
+                await _token_cleanup_task
+            except asyncio.CancelledError:
+                # Cancellation is the expected way for this task to stop.
+                pass
+    finally:
         _token_cleanup_task = None
-    if _ledger_compaction_stop is
…[6 chars omitted]…
one:
-        stop_ledger_compaction_scheduler()
-        _ledger_compaction_stop = None
+        # Keep scheduler cleanup in a finally block: awaiting a cancelled
+        # asyncio task must not prevent the thread from being joined.
+        if _ledger_compaction_stop is not None:
+            stop_ledger_compaction_scheduler()
+            _ledger_compaction_stop = None
 
 
 @app.middleware("http")

step 8

$ grep -n "fastapi_limiter\|FastAPILimiter" -n tests/conftest.py tests/test_api_reference.py; UME_AUDIT_SIGNING_KEY=repro-key PYTHONPATH=src python - <<'PY'

output · 10 lines

tests/conftest.py:103:    "fastapi_limiter",
tests/test_api_reference.py:17:sys.modules.setdefault("fastapi_limiter", type("m", (), {"FastAPILimiter": _DummyLimiter}))
tests/test_api_reference.py:26:sys.modules.setdefault("fastapi_limiter.depends", type("m", (), {"RateLimiter": _RateLimiter}))
Traceback (most recent call last):
  File "<stdin>", line 8, in <module>
  File "/repo/src/ume/api.py", line 40, in <module>
    from .graph_routes import router as graph_router
  File "/repo/src/ume/graph_routes.py", line 9, in <module>
    from fastapi_limiter.depends import RateLimiter
ModuleNotFoundError: No module named 'fastapi_limiter.depends'; 'fastapi_limiter' is not a package

step 9

$ git diff --check

step 10

$ sed -n '80,125p' tests/conftest.py; sed -n '1,30p' src/ume/graph_routes.py; python - <<'PY'

output · 32 lines

class _ValidationError(Exception):
    pass

def _validate(*_: object, **__: object) -> None:
    return None

jsonschema_stub.validate = _validate  # type: ignore[attr-defined]
jsonschema_stub.ValidationError = _ValidationError  # type: ignore[attr-defined]
if importlib.util.find_spec("jsonschema") is None:
    sys.modules.setdefault("jsonschema", jsonschema_stub)

# Force the vector backend to chroma to avoid faiss dependency during tests

20 more lines

from ume.config import settings as _settings  # noqa: E402
object.__setattr__(_settings, "UME_VECTOR_BACKEND", "chroma")

# Additional optional packages used in some modules. These are large or
# platform-specific dependencies that aren't needed for most unit tests, so we
# provide lightweight stubs when they aren't installed.
_OPTIONAL_PACKAGES = [
    "confluent_kafka",
    "structlog",
    "neo4j",
    "faiss",
    "fastapi_limiter",
    "sse_st
…[3740 chars omitted]…
File "/usr/local/lib/python3.12/inspect.py", line 3085, in from_callable
    return _signature_from_callable(obj, sigcls=cls,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/inspect.py", line 2522, in _signature_from_callable
    raise TypeError('{!r} is not a callable object'.format(obj))
TypeError: <__main__.RL object at 0x769306d16a50> is not a callable object

step 11

$ python - <<'PY'

output · 36 lines

store = getattr(app.state, "vector_store", None)
    if store is not None and hasattr(store, "close"):
        store.close()


@app.on_event("shutdown")
async def _stop_token_cleanup() -> None:
    """Cancel the background token cleanup task if running."""
    global _token_cleanup_task, _ledger_compaction_stop
    try:
        if _token_cleanup_task is not None:
            _token_cleanup_task.cancel()

24 more lines

            try:
                await _token_cleanup_task
            except asyncio.CancelledError:
                # Cancellation is the expected way for this task to stop.
                pass
            except Exception:
                # Preserve shutdown behavior for unexpected task failures.
                pass
    finally:
        _token_cleanup_task = None
        # Keep scheduler cleanup in a finally block: awaiting a cancelled
        # asyncio task must not prevent t
…[1779 chars omitted]…
one:
-        stop_ledger_compaction_scheduler()
-        _ledger_compaction_stop = None
+        # Keep scheduler cleanup in a finally block: awaiting a cancelled
+        # asyncio task must not prevent the thread from being joined.
+        if _ledger_compaction_stop is not None:
+            stop_ledger_compaction_scheduler()
+            _ledger_compaction_stop = None
 
 
 @app.middleware("http")

step 12

The reproducer confirmed the root cause at the Python level (`CancelledError` inherits directly from `BaseException`), and the fix now catches it while placing compaction cleanup in `finally`, ensuring cleanup occurs even if task awaiting is interrupted. The retention scheduler tests pass; API tests in this environment cannot collect due an incompatible installed `fastapi_limiter` package, unrelated to the change. I’ll do final syntax/diff checks.

$ git diff --stat && git diff -- src/ume/api.py

output · 36 lines

src/ume/api.py | 26 +++++++++++++++++---------
 1 file changed, 17 insertions(+), 9 deletions(-)
diff --git a/src/ume/api.py b/src/ume/api.py
index 20cc65e..ae04777 100644
--- a/src/ume/api.py
+++ b/src/ume/api.py
@@ -171,16 +171,24 @@ def _close_vector_store() -> None:
 async def _stop_token_cleanup() -> None:
     """Cancel the background token cleanup task if running."""
     global _token_cleanup_task, _ledger_compaction_stop
-    if _token_cleanup_task is not None:
-        _token_cleanup_task.cancel()

24 more lines

-        try:
-            await _token_cleanup_task
-        except Exception:
-            pass
+    try:
+        if _token_cleanup_task is not None:
+            _token_cleanup_task.cancel()
+            try:
+                await _token_cleanup_task
+            except asyncio.CancelledError:
+                # Cancellation is the expected way for this task to stop.
+       
…[233 chars omitted]…
one:
-        stop_ledger_compaction_scheduler()
-        _ledger_compaction_stop = None
+        # Keep scheduler cleanup in a finally block: awaiting a cancelled
+        # asyncio task must not prevent the thread from being joined.
+        if _ledger_compaction_stop is not None:
+            stop_ledger_compaction_scheduler()
+            _ledger_compaction_stop = None
 
 
 @app.middleware("http")

step 13

$ done: {"notes": "Fixed API shutdown lifecycle: explicitly handles asyncio.CancelledError and guarantees ledger compaction scheduler cleanup in finally, so its thread is joined and shutdown completes cleanly. Retention tests pass; compileall and diff checks pass. API test collection was blocked by the environment's incompatible fastapi_limiter installation."}

output · 1 lines

submitted.

GPT-5.6 Luna · attempt 6 · solved · 12 steps · $0.009

Submitted diff · 19 lines

diff --git a/src/ume/api.py b/src/ume/api.py
index 20cc65e..5f7b449 100644
--- a/src/ume/api.py
+++ b/src/ume/api.py
@@ -175,7 +175,14 @@ async def _stop_token_cleanup() -> None:
         _token_cleanup_task.cancel()
         try:
             await _token_cleanup_task
+        except asyncio.CancelledError:
+            # ``CancelledError`` inherits directly from ``BaseException`` on
+            # supported Python versions, so catching ``Exception`` does not
+            # suppress the expected cancellation during application shutdown.
+            pass
         except Exception:
+            # Cleanup should continue even if the task failed for another
+            # reason; in particular, the ledger scheduler must be stopped.
             pass
         _token_cleanup_task = None
     if _ledger_compaction_stop is not None:

step 1

Plan:

$ pwd; find . -maxdepth 2 -type f | sort | head -200; grep -R "compaction\|scheduler\|event-ledger\|event_ledger" -n . --exclude-dir=.git | head -200

output · 48 lines

/repo
./.coveragerc
./.git/COMMIT_EDITMSG
./.git/HEAD
./.git/config
./.git/description
./.git/index
./.github/dependabot.yml
./.github/merge_queue.yml
./.github/pull_request_template.md
./.gitignore
./.pre-commit-config.yaml

36 more lines

./.secrets.baseline
./CHANGELOG.md
./CODE_OF_CONDUCT.md
./CONTRIBUTING.md
./Dockerfile.privacy-agent
./LICENSE
./README.md
./ROADMAP.md
./adr/0001-memory-storage.md
./codex_setup.sh
./docker/Dockerfile.api
./docker/docker-compose.yml
./docker/generate-certs.sh
./docker/setup-redpanda-acls.sh
./docs/ACCESS_CONTROL.md
./docs/AGING_SCHEDULERS.md
./docs/ANGEL_BRIDGE.md
./docs/API_REFERENCE.md
./docs/ARCHITECTURE_OVERVIEW.md
./docs/CONFIG_TEMPLATES.md
./docs/DAG_EXECUTOR.md
./docs/ENV_EXAMPLE.md
./docs/FEDERATION.md
./docs/GRAPH_LISTENERS.md
./docs/GRAPH_MODEL.md
./docs/INTEGRATIONS.md
./docs/LLM_FERRY.md
./docs/MONITORING.md
./docs/SELF_HOSTED_RUNNER.md
./docs/SSL_SET
…[8630 chars omitted]…
 stop_vector_age_scheduler,
./tests/test_vector_age_scheduler.py:14:def test_vector_age_scheduler_flags(monkeypatch: pytest.MonkeyPatch) -> None:
./tests/test_vector_age_scheduler.py:22:    thread, stop = start_vector_age_scheduler(store, interval_seconds=0.01, log=True)
./tests/test_vector_age_scheduler.py:25:    stop_vector_age_scheduler()
./ume_cli.py:58:        print("Snapshot scheduler stopped.")

step 2

$ sed -n '1,280p' tests/test_retention.py; find ume -maxdepth 2 -type f | sort | head -100

output · 53 lines

# mypy: ignore-errors
from __future__ import annotations
# ruff: noqa: E402

import sys
import types
from pathlib import Path

import pytest
import sqlite3
import time
import logging

41 more lines

from typing import Callable

sys.path.insert(0, str(Path(__file__).resolve().parents[1] / "src"))

pkg_root = Path(__file__).resolve().parents[1] / "src" / "ume"
if "ume" not in sys.modules:
    stub = types.ModuleType("ume")
    stub.__path__ = [str(pkg_root)]
    sys.modules["ume"] = stub

from ume.config import settings
from ume.persistent_graph import PersistentGraph
from ume.retention import (
    start_retention_scheduler,
    stop_retention_scheduler,
    start_vector_age_scheduler,
    stop_vector_age_scheduler,
    start_ledger_compaction_scheduler,
    stop_ledger_compaction_scheduler,
    _check_stale_vectors,
)
import ume.retention as retention
from ume.metrics import STALE_VECTOR_WARNINGS


d
…[6157 chars omitted]…
pe": "E", "timestamp": i})
    ledger.update_bookmark(4)

    monkeypatch.setattr(settings, "UME_LEDGER_OFFSET_WINDOW", 2)

    thread, stop = start_ledger_compaction_scheduler(
        ledger, interval_seconds=0.01, offset_window=2
    )
    time.sleep(0.02)
    stop()
    stop_ledger_compaction_scheduler()

    assert [o for o, _ in ledger.range()] == [2, 3, 4]
find: ‘ume’: No such file or directory

step 3

$ sed -n '1,240p' src/ume/api.py; sed -n '1,280p' src/ume/retention.py; grep -R "TestClient\|lifespan" -n tests/test_api.py tests | head -100

output · 37 lines

"""HTTP API exposing graph queries and analytics."""

from __future__ import annotations

import logging
import time
import asyncio
from typing import Any, Awaitable, Callable, cast
from collections import defaultdict

try:  # pragma: no cover - optional dependency
    import redis

25 more lines

except Exception:  # pragma: no cover - allow tests without redis installed
    redis = None
from fastapi_limiter import FastAPILimiter

from .config import settings
from .logging_utils import configure_logging
from .tracing import configure_tracing, is_tracing_enabled

try:  # pragma: no cover - optional dependency
    from opentelemetry import trace
except Exception:  # pragma: no cover - allow tests without opentelemetry installed
    trace = None
from fastapi import FastAPI, Request
from fastapi.exceptions import RequestValidationError
from fastapi.responses import JSONResponse, Response

from .metrics 
…[8630 chars omitted]…
ef _token(client: TestClient) -> str:
tests/test_metrics.py:211:    client = TestClient(app)
tests/test_metrics.py:231:    client = TestClient(app)
tests/test_metrics.py:246:    client = TestClient(app)
tests/test_policy_reload.py:1:from fastapi.testclient import TestClient
tests/test_policy_reload.py:14:def _token(client: TestClient) -> str:
tests/test_policy_reload.py:24:    client = TestClient(app)

step 4

$ sed -n '135,205p' src/ume/api.py; sed -n '1,250p' src/ume/retention.py; grep -R "_ledger_compaction_stop" -n . --exclude-dir=.git

output · 32 lines

async def _token_cleanup_loop(interval: float) -> None:
    """Periodically remove expired entries from ``TOKENS``."""
    try:
        while True:
            await asyncio.sleep(interval)
            api_deps.remove_expired_tokens()
    except asyncio.CancelledError:  # pragma: no cover - task cancelled
        pass


@app.on_event("startup")
async def _start_token_cleanup() -> None:

20 more lines

    """Launch background task for expired token cleanup."""
    from .event_ledger import event_ledger

    global _token_cleanup_task, _ledger_compaction_stop
    interval = min(TOKEN_CLEANUP_INTERVAL, settings.UME_OAUTH_TTL)
    _token_cleanup_task = asyncio.create_task(_token_cleanup_loop(interval))

    _, stop = start_ledger_compaction_scheduler(
        event_ledger,
        interval_seconds=settings.UME_LEDGER_COMPACTION_INTERVAL,
        offset_window=settings.UME_LEDGER_OFFSET_WINDOW,
    )
   
…[8365 chars omitted]…
e/api.py:64:_ledger_compaction_stop: Callable[[], None] | None = None
./src/ume/api.py:150:    global _token_cleanup_task, _ledger_compaction_stop
./src/ume/api.py:159:    _ledger_compaction_stop = stop
./src/ume/api.py:173:    global _token_cleanup_task, _ledger_compaction_stop
./src/ume/api.py:181:    if _ledger_compaction_stop is not None:
./src/ume/api.py:183:        _ledger_compaction_stop = None

step 5

$ PYTHONPATH=src python - <<'PY'

output · 20 lines

/usr/local/lib/python3.12/site-packages/fastapi/testclient.py:1: StarletteDeprecationWarning: Using `httpx` with `starlette.testclient` is deprecated; install `httpx2` instead.
  from starlette.testclient import TestClient as TestClient  # noqa
Edit the generated .env file to replace the placeholder UME_AUDIT_SIGNING_KEY.
Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
  File "/repo/src/ume/__init__.py", line 13, in <module>
    config, Settings = load_config(__name__)
                       ^^^^^^^^^^^^^^^^^^^^^
  File "/repo/src/ume/bootstrap/config.py", line 15, in load_config
    config = importlib.import_module(".config", package)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/importlib/__init__.py", line 90, in import_module

8 more lines

    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^
…[622 chars omitted]…
thon(data, self_instance=self)
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
pydantic_core._pydantic_core.ValidationError: 1 validation error for Settings
  Value error, UME_AUDIT_SIGNING_KEY must be set to a non-default value [type=value_error, input_value={}, input_type=dict]
    For further information visit https://errors.pydantic.dev/2.13/v/value_error

step 6

$ sed -n '1,100p' tests/conftest.py; grep -R "AUDIT_SIGNING_KEY" -n .env* tests | head

output · 33 lines

from __future__ import annotations

import sys
import types
import importlib
from typing import Generator
from pathlib import Path
import os

# Force pure-Python protobuf implementation for compatibility with Python 3.12
os.environ.setdefault("PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION", "python")
os.environ.setdefault("UME_AUDIT_SIGNING_KEY", "test-key")

21 more lines

try:
    from testcontainers.core.container import DockerContainer
    from testcontainers.neo4j import Neo4jContainer
except Exception:  # pragma: no cover - optional dependency may be missing
    DockerContainer = None  # type: ignore[assignment,misc]
    Neo4jContainer = None  # type: ignore[assignment]

import pytest

# Ensure the src directory is importable when UME isn't installed
sys.path.insert(0, str(Path(__file__).resolve().parents[1] / "src"))

# Stub optional dependencies so importing ume modules doesn't fail when they
# are
…[3037 chars omitted]…
efault("UME_AUDIT_SIGNING_KEY", "test-key")
tests/test_async_client_auth.py:14:os.environ.setdefault("UME_AUDIT_SIGNING_KEY", "test-key")
tests/test_audit_logging.py:4:os.environ.setdefault("UME_AUDIT_SIGNING_KEY", "test-key")
tests/test_cli_env.py:25:    assert "UME_AUDIT_SIGNING_KEY=new-key" in content
tests/test_cli_env.py:39:        "UME_AUDIT_SIGNING_KEY=default-key\n"  # pragma: allowlist secret

step 7

$ UME_AUDIT_SIGNING_KEY=test-key PYTHONPATH=src python - <<'PY'

output · 7 lines

/usr/local/lib/python3.12/site-packages/fastapi/testclient.py:1: StarletteDeprecationWarning: Using `httpx` with `starlette.testclient` is deprecated; install `httpx2` instead.
  from starlette.testclient import TestClient as TestClient  # noqa
Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
  File "/repo/src/ume/api.py", line 15, in <module>
    from fastapi_limiter import FastAPILimiter
ImportError: cannot import name 'FastAPILimiter' from 'fastapi_limiter' (/usr/local/lib/python3.12/site-packages/fastapi_limiter/__init__.py)

step 8

$ python - <<'PY'

output · 28 lines

diff --git a/src/ume/api.py b/src/ume/api.py
index 20cc65e..5f7b449 100644
--- a/src/ume/api.py
+++ b/src/ume/api.py
@@ -175,7 +175,14 @@ async def _stop_token_cleanup() -> None:
         _token_cleanup_task.cancel()
         try:
             await _token_cleanup_task
+        except asyncio.CancelledError:
+            # ``CancelledError`` inherits directly from ``BaseException`` on
+            # supported Python versions, so catching ``Exception`` does not
+            # suppress the expected cancellation during application shutdown.

16 more lines

+            pass
         except Exception:
+            # Cleanup should continue even if the task failed for another
+            # reason; in particular, the ledger scheduler must be stopped.
             pass
         _token_cleanup_task = None
     if _ledger_compaction_stop is not None:

==================================== ERRORS =============
…[666 chars omitted]…
FastAPILimiter' from 'fastapi_limiter' (/usr/local/lib/python3.12/site-packages/fastapi_limiter/__init__.py)
=========================== short test summary info ============================
ERROR tests/test_api.py
!!!!!!!!!!!!!!!!!!!!!!!!!! stopping after 1 failures !!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!
3 warnings, 1 error in 0.97s

step 9

$ pytest -q tests/test_retention.py --disable-warnings --maxfail=1; git diff --check; git status --short

output · 3 lines

..........                                                               [100%]
10 passed, 12 warnings in 0.58s
 M src/ume/api.py

step 10

$ UME_AUDIT_SIGNING_KEY=test-key PYTHONPATH=src python - <<'PY'

output · 9 lines

/usr/local/lib/python3.12/site-packages/fastapi/testclient.py:1: StarletteDeprecationWarning: Using `httpx` with `starlette.testclient` is deprecated; install `httpx2` instead.
  from starlette.testclient import TestClient as TestClient  # noqa
Traceback (most recent call last):
  File "<stdin>", line 7, in <module>
  File "/repo/src/ume/api.py", line 40, in <module>
    from .graph_routes import router as graph_router
  File "/repo/src/ume/graph_routes.py", line 9, in <module>
    from fastapi_limiter.depends import RateLimiter
ModuleNotFoundError: No module named 'fastapi_limiter.depends'; 'fastapi_limiter' is not a package

step 11

$ python -m compileall -q src/ume/api.py; git diff --check; git diff --stat; git diff

output · 21 lines

src/ume/api.py | 7 +++++++
 1 file changed, 7 insertions(+)
diff --git a/src/ume/api.py b/src/ume/api.py
index 20cc65e..5f7b449 100644
--- a/src/ume/api.py
+++ b/src/ume/api.py
@@ -175,7 +175,14 @@ async def _stop_token_cleanup() -> None:
         _token_cleanup_task.cancel()
         try:
             await _token_cleanup_task
+        except asyncio.CancelledError:
+            # ``CancelledError`` inherits directly from ``BaseException`` on

9 more lines

+            # supported Python versions, so catching ``Exception`` does not
+            # suppress the expected cancellation during application shutdown.
+            pass
         except Exception:
+            # Cleanup should continue even if the task failed for another
+            # reason; in particular, the ledger scheduler must be stopped.
             pass
         _token_cleanup_task = None
     if _ledger_compaction_stop is not None:

step 13

$ done: {"notes": "Fixed API shutdown by explicitly handling asyncio.CancelledError from the token cleanup task, allowing ledger compaction scheduler shutdown to complete. Retention tests pass; diff reviewed and checked."}

output · 1 lines

submitted.

GLM-5.3 Flash · attempt 2 · solved · 37 steps · $0.011

Submitted diff · 15 lines

diff --git a/src/ume/api.py b/src/ume/api.py
index 20cc65e..83c565d 100644
--- a/src/ume/api.py
+++ b/src/ume/api.py
@@ -175,6 +175,10 @@ async def _stop_token_cleanup() -> None:
         _token_cleanup_task.cancel()
         try:
             await _token_cleanup_task
+        except asyncio.CancelledError:
+            # The task may have been cancelled before it started running, in
+            # which case awaiting it raises CancelledError directly.
+            pass
         except Exception:
             pass
         _token_cleanup_task = None

step 1

$ ls /repo; grep -rn "compaction" /repo --include=*.py -l | head

output · 32 lines

CHANGELOG.md
CODE_OF_CONDUCT.md
CONTRIBUTING.md
Dockerfile.privacy-agent
LICENSE
README.md
ROADMAP.md
adr
codex_setup.sh
docker
docs
env.example

20 more lines

events_pb2.py
examples
frontend
mypy.ini
poetry.lock
protos
pyproject.toml
pytest.ini
scripts
src
tests
ume_cli.py
ume_pb2.py
ume_pb2_grpc.py
/repo/src/ume/api.py
/repo/src/ume/metrics.py
/repo/src/ume/retention.py
/repo/src/ume/__init__.py
/repo/tests/test_api.py
/repo/tests/test_retention.py

step 2

$ grep -n "compaction\|lifespan\|scheduler\|startup\|shutdown" /repo/src/ume/api.py | head -50

output · 14 lines

31:    start_ledger_compaction_scheduler,
32:    stop_ledger_compaction_scheduler,
64:_ledger_compaction_stop: Callable[[], None] | None = None
118:@app.on_event("startup")
145:@app.on_event("startup")
150:    global _token_cleanup_task, _ledger_compaction_stop
154:    _, stop = start_ledger_compaction_scheduler(
159:    _ledger_compaction_stop = stop
162:@app.on_event("shutdown")
170:@app.on_event("shutdown")
173:    global _token_cleanup_task, _ledger_compaction_stop
181:    if _ledger_compaction_stop is not None:

2 more lines

182:        stop_ledger_compaction_scheduler()
183:        _ledger_compaction_stop = None

step 3

$ sed -n 100,200p /repo/src/ume/api.py; grep -n "def start_ledger_compaction_scheduler" -A40 /repo/src/ume/retention.py

output · 42 lines

async def script_load(self, _: str) -> str:
        return "mem"

    async def evalsha(self, __: str, _k: int, key: str, limit: str, _exp: str) -> int:
        lim = int(limit)
        if self.counts[key] >= lim:
            return 1
        self.counts[key] += 1
        return 0

    async def ping(self) -> None:
        return None

30 more lines

    async def close(self) -> None:
        self.counts.clear()


@app.on_event("startup")
async def _init_limiter() -> None:
    """Initialize rate limiting using Redis or an in-memory fallback."""
    url = settings.UME_RATE_LIMIT_REDIS
    if url and redis:
        try:
            redis_client = redis.from_url(
                url, encoding="utf-8", decode_responses=True
            )
            await redis_client.ping()
        except Exception:  # pragma: no cover - connection issue
            redis_client = _MemoryRedis()
    else:
        
…[3672 chars omitted]…
g and continue
192-            logger.exception("Failed to compact event ledger")
193-
194-        while not stop_event.wait(interval_seconds):
195-            try:
196-                _compact()
197-            except Exception:  # pragma: no cover - log and continue
198-                logger.exception("Failed to compact event ledger")
199-
200-    thread = threading.Thread(target=_run, daemon=True)

step 4

$ sed -n 200,230p /repo/src/ume/retention.py; grep -rn "lifespan\|TestClient\|with TestClient" /repo/tests/test_api.py | head

output · 35 lines

thread = threading.Thread(target=_run, daemon=True)
    thread.start()

    _ledger_thread = thread
    _ledger_stop = stop_event
    _ledger_params = params

    def stop() -> None:
        stop_event.set()
        thread.join()

    return thread, stop

23 more lines


def stop_ledger_compaction_scheduler() -> None:
    """Stop the ledger compaction scheduler if running."""

    global _ledger_thread, _ledger_stop, _ledger_params
    if _ledger_stop is not None:
        _ledger_stop.set()
    if _ledger_thread is not None:
        _ledger_thread.join()
    _ledger_thread = None
    _ledger_stop = None
    _ledger_params = None
2:from fastapi.testclient import TestClient
34:def _token(client: TestClient) -> str:
48:    client = TestClient(app)
60:    client = TestClient(app)
66:    client = TestClient(app)
79:    client = TestClient(app)
92:    client = TestClient(app)
105:    client = TestClient(app)
116:    client = TestClient(app)
132:    client = TestClient(app)

step 5

$ sed -n 1,60p /repo/tests/test_retention.py; grep -n "compaction" /repo/tests/test_api.py

output · 47 lines

# mypy: ignore-errors
from __future__ import annotations
# ruff: noqa: E402

import sys
import types
from pathlib import Path

import pytest
import sqlite3
import time
import logging

35 more lines

from typing import Callable

sys.path.insert(0, str(Path(__file__).resolve().parents[1] / "src"))

pkg_root = Path(__file__).resolve().parents[1] / "src" / "ume"
if "ume" not in sys.modules:
    stub = types.ModuleType("ume")
    stub.__path__ = [str(pkg_root)]
    sys.modules["ume"] = stub

from ume.config import settings
from ume.persistent_graph import PersistentGraph
from ume.retention import (
    start_retention_scheduler,
    stop_retention_scheduler,
    start_vector_age_scheduler,
    stop_vector_age_scheduler,
    start_ledger_compaction_scheduler,
    stop_ledger_compaction_scheduler,
    _check_stale_vectors,
)
import ume.retention as retention
from ume.metrics import STALE_VECTOR_WARNINGS


d
…[512 chars omitted]…
nn.execute("UPDATE nodes SET created_at=? WHERE id='old'", (old_ts,))
        graph.conn.execute("UPDATE edges SET created_at=?", (old_ts,))

    monkeypatch.setattr(settings, "UME_GRAPH_RETENTION_DAYS", 0)
    start_retention_scheduler(graph, interval_seconds=0.01)
    time.sleep(0.02)
    stop_retention_scheduler()
311:def test_api_ledger_compaction(monkeypatch: MonkeyPatch, tmp_path: Path) -> None:

step 6

$ sed -n 300,360p /repo/tests/test_api.py

output · 42 lines

monkeypatch.setattr(api_mod, "TOKEN_CLEANUP_INTERVAL", 0.01)
    monkeypatch.setattr(settings, "UME_OAUTH_TTL", 0.02)

    with TestClient(app) as client:
        token = _token(client)
        assert token in deps.TOKENS
        time.sleep(0.05)
        assert token not in deps.TOKENS


def test_api_ledger_compaction(monkeypatch: MonkeyPatch, tmp_path: Path) -> None:
    from ume.event_ledger import EventLedger

30 more lines

    ledger = EventLedger(str(tmp_path / "ledger.db"))
    for i in range(5):
        ledger.append(i, {"event_type": "E", "timestamp": i})
    ledger.update_bookmark(4)

    monkeypatch.setattr("ume.event_ledger.event_ledger", ledger)
    monkeypatch.setattr(settings, "UME_LEDGER_OFFSET_WINDOW", 2)
    monkeypatch.setattr(settings, "UME_LEDGER_COMPACTION_INTERVAL", 0.01)

    with TestClient(app) as client:
        _token(client)
        time.sleep(0.05)

    assert [o f
…[627 chars omitted]…
oken"])
            except Exception as exc:  # pragma: no cover - unexpected
                errors.append(exc)

        threads = [threading.Thread(target=worker) for _ in range(5)]
        for t in threads:
            t.start()
        for t in threads:
            t.join()

        assert not errors
        assert len(tokens) == 5
        for tok in tokens:
            deps.TOKENS.pop(tok, None)

step 7

$ cat > /tmp/repro.py <<'EOF'

output · 23 lines

Edit the generated .env file to replace the placeholder UME_AUDIT_SIGNING_KEY.
Traceback (most recent call last):
  File "/tmp/repro.py", line 4, in <module>
    from ume.config import settings
  File "/repo/src/ume/__init__.py", line 13, in <module>
    config, Settings = load_config(__name__)
                       ^^^^^^^^^^^^^^^^^^^^^
  File "/repo/src/ume/bootstrap/config.py", line 15, in load_config
    config = importlib.import_module(".config", package)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/importlib/__init__.py", line 90, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)

11 more lines

           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/repo/src/ume/config/__init__.py", line 118, in <module>
    settings = load_settings()
               ^^^^^^^^^^^^^^^
  File "/repo/src/ume/config/loader
…[419 chars omitted]…
thon(data, self_instance=self)
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
pydantic_core._pydantic_core.ValidationError: 1 validation error for Settings
  Value error, UME_AUDIT_SIGNING_KEY must be set to a non-default value [type=value_error, input_value={}, input_type=dict]
    For further information visit https://errors.pydantic.dev/2.13/v/value_error

step 8

$ grep -rn "UME_AUDIT_SIGNING_KEY" /repo/tests/conftest.py /repo/pytest.ini 2>/dev/null | head; sed -n 1,40p /repo/tests/conftest.py

output · 36 lines

/repo/tests/conftest.py:12:os.environ.setdefault("UME_AUDIT_SIGNING_KEY", "test-key")
/repo/tests/conftest.py:230:    orig_key = os.environ.get("UME_AUDIT_SIGNING_KEY")
/repo/tests/conftest.py:241:        os.environ.setdefault("UME_AUDIT_SIGNING_KEY", "test-key")
/repo/tests/conftest.py:243:        os.environ["UME_AUDIT_SIGNING_KEY"] = orig_key
from __future__ import annotations

import sys
import types
import importlib
from typing import Generator
from pathlib import Path
import os

24 more lines

# Force pure-Python protobuf implementation for compatibility with Python 3.12
os.environ.setdefault("PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION", "python")
os.environ.setdefault("UME_AUDIT_SIGNING_KEY", "test-key")

try:
    from testcontainers.core.container import DockerContainer
    from testcontainers.neo4j import Neo4jContainer
except Exception:  # pragma: no cover - optional dependency may be missing
 
…[426 chars omitted]…
mentations.
if importlib.util.find_spec("httpx") is None:
    sys.modules.setdefault("httpx", types.ModuleType("httpx"))

yaml_stub = types.ModuleType("yaml")
yaml_stub.safe_load = lambda _: {}
if importlib.util.find_spec("yaml") is None:
    sys.modules.setdefault("yaml", yaml_stub)

prom_stub = types.ModuleType("prometheus_client")


class _DummyValue:  # pragma: no cover - minimal metric value stub

step 9

$ UME_AUDIT_SIGNING_KEY=test-key python /tmp/repro.py

output · 9 lines

/usr/local/lib/python3.12/site-packages/fastapi/testclient.py:1: StarletteDeprecationWarning: Using `httpx` with `starlette.testclient` is deprecated; install `httpx2` instead.
  from starlette.testclient import TestClient as TestClient  # noqa
started externally: True
Traceback (most recent call last):
  File "/tmp/repro.py", line 23, in <module>
    from ume.api import app
  File "/repo/src/ume/api.py", line 15, in <module>
    from fastapi_limiter import FastAPILimiter
ImportError: cannot import name 'FastAPILimiter' from 'fastapi_limiter' (/usr/local/lib/python3.12/site-packages/fastapi_limiter/__init__.py)

step 10

$ cp /tmp/repro.py /repo/tests/test_repro_tmp.py && python -m pytest /repo/tests/test_repro_tmp.py -x -q 2>&1 | tail -30

output · 26 lines

Traceback:
/usr/local/lib/python3.12/importlib/__init__.py:90: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
tests/test_repro_tmp.py:23: in <module>
    from ume.api import app
src/ume/api.py:15: in <module>
    from fastapi_limiter import FastAPILimiter
E   ImportError: cannot import name 'FastAPILimiter' from 'fastapi_limiter' (/usr/local/lib/python3.12/site-packages/fastapi_limiter/__init__.py)
------------------------------- Captured stdout --------------------------------
started externally: True
=============================== warnings summary ===============================

14 more lines

tests/conftest.py:16
  /repo/tests/conftest.py:16: DeprecationWarning: testcontainers.neo4j is deprecated, use testcontainers.community.neo4j instead
    from testcontainers.neo4j import Neo4jContainer

src/ume
…[662 chars omitted]…
tClient as TestClient  # noqa

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
=========================== short test summary info ============================
ERROR tests/test_repro_tmp.py
!!!!!!!!!!!!!!!!!!!!!!!!!! stopping after 1 failures !!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!
3 warnings, 1 error in 1.01s

step 11

$ sed -n 1,45p /repo/tests/test_api.py

output · 44 lines

# ruff: noqa: E402
from fastapi.testclient import TestClient
import pytest
from typing import Any
import time
import threading
from pathlib import Path

faiss = pytest.importorskip("faiss")
if not hasattr(faiss, "IndexFlatL2"):
    pytest.skip("faiss is missing required functionality", allow_module_level=True)

32 more lines

from ume.api import app, configure_graph, configure_vector_store
from ume import api_deps as deps
from ume.vector_store import VectorStore
from ume import MockGraph
from ume.config import settings
from pytest import MonkeyPatch, LogCaptureFixture


def setup_module(_: object) -> None:
    # configure app state for tests
    object.__setattr__(settings, "UME_API_TOKEN", "secret-token")
    app.state.query_engine = type(
        "QE", (), {"execute_cypher": lambda self, q: [{"q": q}]}
    )()
    g = MockGraph()
    g.add_node("a", {})
    g.add_node("b", {})
    g.add_edge("a", "b", "L")
    configure_graph(g)


def _token(client: TestClient) -> str:
    res = client.post(
        "/auth/token",
        data={
            "username": settings.UME_OAUTH_USERNAME,
            "password": settings.UME_OAUTH_PASSWORD,
        },
    )
    token = res.json()["access_token"]
    assert isinstance(token, str)
    return token

step 12

$ python -c "import fastapi_limiter; print(dir(fastapi_limiter))"; grep -rn "fastapi_limiter" /repo/tests/conftest.py | head

output · 2 lines

['__builtins__', '__cached__', '__doc__', '__file__', '__loader__', '__name__', '__package__', '__path__', '__spec__']
103:    "fastapi_limiter",

step 13

$ sed -n 60,140p /repo/tests/conftest.py

output · 42 lines

def set(self, value: int | float) -> None:
        self._value.set(value)

    def observe(self, *_: object, **__: object) -> None:
        pass

prom_stub.Counter = _DummyMetric  # type: ignore[attr-defined]
prom_stub.Histogram = _DummyMetric  # type: ignore[attr-defined]
prom_stub.Gauge = _DummyMetric  # type: ignore[attr-defined]

if importlib.util.find_spec("prometheus_client") is None:
    sys.modules.setdefault("prometheus_client", prom_stub)

30 more lines

if importlib.util.find_spec("numpy") is None:
    numpy_stub = types.ModuleType("numpy")
    numpy_stub.asarray = lambda x, dtype=None: list(x)
    sys.modules.setdefault("numpy", numpy_stub)

jsonschema_stub = types.ModuleType("jsonschema")
class _ValidationError(Exception):
    pass

def _validate(*_: object, **__: object) -> None:
    return None

jsonschema_stub.validate = _validate  # type: ignore[attr-defined]
jsonschema_stub.Va
…[1341 chars omitted]…
j":
            module.GraphDatabase = object
            module.Driver = object
        sys.modules.setdefault(_package, module)

try:
    from ume.pipeline import privacy_agent as privacy_agent_module
except Exception:  # pragma: no cover - optional deps may be missing
    privacy_agent_module = None  # type: ignore[assignment]


@pytest.fixture
def privacy_agent():
    return privacy_agent_module

step 14

$ timeout 600 python -m pytest /repo/tests/test_api.py -x -q 2>&1 | tail -15

output · 14 lines

src/ume/config/__init__.py:12
  /repo/src/ume/config/__init__.py:12: PydanticDeprecatedSince20: `pydantic.config.Extra` is deprecated, use literal values instead (e.g. `extra='allow'`). Deprecated in Pydantic V2.0 to be removed in V3.0. See Pydantic V2 Migration Guide at https://errors.pydantic.dev/2.13/migration/
    env_file=".env", env_file_encoding="utf-8", extra=Extra.ignore

../usr/local/lib/python3.12/site-packages/fastapi/testclient.py:1
  /usr/local/lib/python3.12/site-packages/fastapi/testclient.py:1: StarletteDeprecationWarning: Using `httpx` with `starlette.testclient` is deprecated; install `httpx2` instead.
    from starlette.testclient import TestClient as TestClient  # noqa

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
=========================== short test summary info ============================
ERROR tests/test_api.py
!!!!!!!!!!!!!!!!!!!!!!!!!! stopping after 1 failures !!!!!!!!!!!!!!!!!!!!!!!!!!!

2 more lines

!!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!
3 warnings, 1 error in 1.04s

step 15

$ timeout 600 python -m pytest /repo/tests/test_api.py -x -q 2>&1 | grep -B5 "ERROR\|Error" | head -30

output · 17 lines

==================================== ERRORS ====================================
______________________ ERROR collecting tests/test_api.py ______________________
ImportError while importing test module '/repo/tests/test_api.py'.
--
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
tests/test_api.py:13: in <module>
    from ume.api import app, configure_graph, configure_vector_store
src/ume/api.py:15: in <module>
    from fastapi_limiter import FastAPILimiter
E   ImportError: cannot import name 'FastAPILimiter' from 'fastapi_limiter' (/usr/local/lib/python3.12/site-packages/fastapi_limiter/__init__.py)
--
  /usr/local/lib/python3.12/site-packages/fastapi/testclient.py:1: StarletteDeprecationWarning: Using `httpx` with `starlette.testclient` is deprecated; install `httpx2` instead.

5 more lines

    from starlette.testclient import TestClient as TestClient  # noqa

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
=========================== short test summary info ============================
ERROR tests/test_api.py

step 16

$ python - <<'PY'

output · 20 lines

src/ume/graph_routes.py:154: in <module>
    __: None = Depends(RateLimiter(times=2, seconds=1)),
                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
E   TypeError: _BaseRateLimiter.__init__() got an unexpected keyword argument 'times'
------------------------------- Captured stdout --------------------------------
started externally: True
=============================== warnings summary ===============================
tests/conftest.py:16
  /repo/tests/conftest.py:16: DeprecationWarning: testcontainers.neo4j is deprecated, use testcontainers.community.neo4j instead
    from testcontainers.neo4j import Neo4jContainer

src/ume/config/__init__.py:12

8 more lines

  /repo/src/ume/config/__init__.py:12: PydanticDeprecatedSince20: `pydantic.config.Extra` is deprecated, use literal values instead (e.g. `extra='allow'`). Deprecated in Pydantic V2.0 to be removed in V3.0. See Pydantic V2 Migration Guide
…[452 chars omitted]…
s.pytest.org/en/stable/how-to/capture-warnings.html
=========================== short test summary info ============================
ERROR tests/test_repro_tmp.py - TypeError: _BaseRateLimiter.__init__() got an...
!!!!!!!!!!!!!!!!!!!!!!!!!! stopping after 1 failures !!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!
3 warnings, 1 error in 1.68s

step 17

$ python - <<'PY'

output · 22 lines

from .graph_routes import router as graph_router
src/ume/graph_routes.py:9: in <module>
    from fastapi_limiter.depends import RateLimiter
E   ModuleNotFoundError: No module named 'fastapi_limiter.depends'; 'fastapi_limiter' is not a package
------------------------------- Captured stdout --------------------------------
started externally: True
=============================== warnings summary ===============================
tests/conftest.py:16
  /repo/tests/conftest.py:16: DeprecationWarning: testcontainers.neo4j is deprecated, use testcontainers.community.neo4j instead
    from testcontainers.neo4j import Neo4jContainer

src/ume/config/__init__.py:12

10 more lines

  /repo/src/ume/config/__init__.py:12: PydanticDeprecatedSince20: `pydantic.config.Extra` is deprecated, use literal values instead (e.g. `extra='allow'`). Deprecated in Pydantic V2.0 to be removed in V3.0. See Pydantic V2 Migrati
…[409 chars omitted]…
tClient as TestClient  # noqa

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
=========================== short test summary info ============================
ERROR tests/test_repro_tmp.py
!!!!!!!!!!!!!!!!!!!!!!!!!! stopping after 1 failures !!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!
3 warnings, 1 error in 1.12s

step 18

$ python - <<'PY'

output · 25 lines

Read more about it in the
          [FastAPI docs for Lifespan Events](https://fastapi.tiangolo.com/advanced/events/).
          
    @app.on_event("startup")

src/ume/api.py:162
  /repo/src/ume/api.py:162: DeprecationWarning: 
          on_event is deprecated, use lifespan event handlers instead.
  
          Read more about it in the
          [FastAPI docs for Lifespan Events](https://fastapi.tiangolo.com/advanced/events/).

13 more lines

    @app.on_event("shutdown")

src/ume/api.py:170
  /repo/src/ume/api.py:170: DeprecationWarning: 
          on_event is deprecated, use lifespan event handlers instead.
  
          Read more about it in the
          [FastAPI docs for Lifespan Events](https://fastapi.tiangolo.com/advanced/events/).
          
    @app.on_event("shutdown")

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
11 warnings in 0.97s

step 19

$ timeout 300 python -m pytest /repo/tests/test_repro_tmp.py -x -q 2>&1 | grep -E "passed|failed|error|assert|alive|health" | head

output · 1 lines

/repo/src/ume/config/__init__.py:12: PydanticDeprecatedSince20: `pydantic.config.Extra` is deprecated, use literal values instead (e.g. `extra='allow'`). Deprecated in Pydantic V2.0 to be removed in V3.0. See Pydantic V2 Migration Guide at https://errors.pydantic.dev/2.13/migration/

step 20

$ timeout 300 python -m pytest /repo/tests/test_repro_tmp.py -x -q 2>&1 | head -40

output · 24 lines

=============================== warnings summary ===============================
tests/conftest.py:16
  /repo/tests/conftest.py:16: DeprecationWarning: testcontainers.neo4j is deprecated, use testcontainers.community.neo4j instead
    from testcontainers.neo4j import Neo4jContainer

src/ume/config/__init__.py:12
  /repo/src/ume/config/__init__.py:12: PydanticDeprecatedSince20: `pydantic.config.Extra` is deprecated, use literal values instead (e.g. `extra='allow'`). Deprecated in Pydantic V2.0 to be removed in V3.0. See Pydantic V2 Migration Guide at https://errors.pydantic.dev/2.13/migration/
    env_file=".env", env_file_encoding="utf-8", extra=Extra.ignore

../usr/local/lib/python3.12/site-packages/fastapi/testclient.py:1
  /usr/local/lib/python3.12/site-packages/fastapi/testclient.py:1: StarletteDeprecationWarning: Using `httpx` with `starlette.testclient` is deprecated; install `
…[835 chars omitted]…

12 more lines

ers instead.
  
          Read more about it in the
          [FastAPI docs for Lifespan Events](https://fastapi.tiangolo.com/advanced/events/).
          
    return self.router.on_event(event_type)  # ty: ignore[deprecated]

src/ume/api.py:145
  /repo/src/ume/api.py:145: DeprecationWarning: 
          on_event is deprecated, use lifespan event handlers instead.
  
          Read more about it in the

step 21

$ timeout 300 python -m pytest /repo/tests/test_repro_tmp.py -q 2>&1 | grep -E "^(FAILED|ERROR|PASSED|[0-9]+ (passed|failed))|alive|health|Error"

step 22

$ timeout 300 python -m pytest /repo/tests/test_repro_tmp.py -q 2>&1 | tail -3; echo ---; timeout 300 python -m pytest /repo/tests/test_repro_tmp.py -q -s 2>&1 | grep -v Warning | tail -20

output · 23 lines

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
11 warnings in 1.19s
---
    @app.on_event("startup")

src/ume/api.py:162
          on_event is deprecated, use lifespan event handlers instead.
  
          Read more about it in the
          [FastAPI docs for Lifespan Events](https://fastapi.tiangolo.com/advanced/events/).
          
    @app.on_event("shutdown")

11 more lines

src/ume/api.py:170
          on_event is deprecated, use lifespan event handlers instead.
  
          Read more about it in the
          [FastAPI docs for Lifespan Events](https://fastapi.tiangolo.com/advanced/events/).
          
    @app.on_event("shutdown")

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
11 warnings in 1.10s

step 23

$ UME_AUDIT_SIGNING_KEY=test-key python /repo/tests/test_repro_tmp.py 2>&1 | grep -v Warning | tail -20

output · 5 lines

from starlette.testclient import TestClient as TestClient  # noqa
HTTP Request: GET http://testserver/health "HTTP/1.1 404 Not Found"
started externally: True
health 404
thread alive after shutdown: False

step 24

$ python - <<'PY'

output · 1 lines

done

step 25

$ cd /repo && git log --oneline -8 -- src/ume/api.py src/ume/retention.py; grep -rn "lifespan" src/ume/*.py | head

output · 1 lines

e8380f6 base

step 26

$ cd /repo && sed -n 1,70p src/ume/api.py

output · 44 lines

"""HTTP API exposing graph queries and analytics."""

from __future__ import annotations

import logging
import time
import asyncio
from typing import Any, Awaitable, Callable, cast
from collections import defaultdict

try:  # pragma: no cover - optional dependency
    import redis

32 more lines

except Exception:  # pragma: no cover - allow tests without redis installed
    redis = None
from fastapi_limiter import FastAPILimiter

from .config import settings
from .logging_utils import configure_logging
from .tracing import configure_tracing, is_tracing_enabled

try:  # pragma: no cover - optional dependency
    from opentelemetry import trace
except Exception:  # pragma: no cover - allow tests without opentelemetry installed
    trace = None
from fastapi import FastAPI, Request
from fastapi.exceptions import RequestValidationError
from fastapi.responses import JSONResponse, Response

from .metrics 
…[1134 chars omitted]…
re_graph  # noqa: F401 re-exported for tests
configure_vector_store = api_deps.configure_vector_store  # noqa: F401 re-exported for tests

# Interval between token cleanup runs in seconds
TOKEN_CLEANUP_INTERVAL = 60.0

_token_cleanup_task: asyncio.Task | None = None
_ledger_compaction_stop: Callable[[], None] | None = None


logger = logging.getLogger(__name__)

configure_logging()
configure_tracing()

step 27

$ cd /repo && cat > /tmp/repro2.py <<'EOF'

output · 4 lines

from starlette.testclient import TestClient as TestClient  # noqa
HTTP Request: GET http://testserver/ "HTTP/1.1 404 Not Found"
external thread alive: True
after shutdown: _ledger_thread: None alive: None

step 28

$ cd /repo && sed 's/interval_seconds=settings.UME_LEDGER_COMPACTION_INTERVAL/interval_seconds=0.02/' /tmp/repro2.py > /tmp/repro3.py && python /tmp/repro3.py 2>&1 | grep -v Warning | tail -5

output · 4 lines

from starlette.testclient import TestClient as TestClient  # noqa
HTTP Request: GET http://testserver/ "HTTP/1.1 404 Not Found"
external thread alive: True
after shutdown: _ledger_thread: None alive: None

step 29

$ cd /repo && sed 's/        client.get("\/")/        pass/' /tmp/repro2.py > /tmp/repro4.py && python /tmp/repro4.py 2>&1 | grep -v Warning | tail -6

output · 3 lines

from starlette.testclient import TestClient as TestClient  # noqa
external thread alive: True
after shutdown: _ledger_thread: None alive: None

step 30

$ cd /repo && cat > /tmp/repro5.py <<'EOF'

output · 6 lines

return future.result()
           ^^^^^^^^^^^^^^^
  File "/tmp/repro5.py", line 38, in main
    await app.router.startup()
          ^^^^^^^^^^^^^^^^^^
AttributeError: 'APIRouter' object has no attribute 'startup'. Did you mean: '_startup'?

step 31

$ cd /repo && sed -i 's/app.router.startup()/app.router.lifespan_context(app)/' /tmp/repro5.py && sed -i 's/await app.router.shutdown()/pass/' /tmp/repro5.py && python - <<'PY'

output · 3 lines

external thread alive: True
shutdown ok
after shutdown: _ledger_thread: None alive: None

step 32

$ cd /repo && grep -n "def compact" -A30 src/ume/event_ledger.py

output · 11 lines

103:    def compact(self, max_offset: int) -> None:
104-        """Delete events with offsets lower than ``max_offset``."""
105-        with self.conn:
106-            self.conn.execute("DELETE FROM events WHERE offset < ?", (max_offset,))
107-
108-    def close(self) -> None:
109-        self.conn.close()
110-
111-
112-# Global ledger instance used by graph consumers
113-event_ledger = EventLedger()

step 33

$ cd /repo && sed -i 's/            await asyncio.sleep(0)/            pass/' /tmp/repro5.py && python /tmp/repro5.py 2>&1 | grep -v Warning | tail -6

output · 3 lines

external thread alive: True
EXC during lifecycle: CancelledError 
after shutdown: _ledger_thread: <Thread(Thread-1 (_run), started daemon 134679409718976)> alive: True

step 34

Reproduced: `CancelledError` escapes the shutdown handler (task cancelled before ever running → `await` raises `CancelledError`, not caught by `except Exception`), so the compaction stop is skipped and the thread stays alive. Fixing:

$ cd /repo && python - <<'PY'

output · 9 lines

external thread alive: True
shutdown ok
after shutdown: _ledger_thread: None alive: None
external thread alive: True
after shutdown: _ledger_thread: None alive: None
external thread alive: True
after shutdown: _ledger_thread: None alive: None
external thread alive: True
after shutdown: _ledger_thread: None alive: None

step 35

$ cd /repo && python - <<'PY' 2>&1 | tail -3

output · 6 lines

shutdown ok
after shutdown: _ledger_thread: None alive: None
external thread alive: False

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
10 passed, 12 warnings in 0.79s

step 36

$ cd /repo && rm -f tests/test_repro_tmp.py && git diff && git status --short

output · 16 lines

diff --git a/src/ume/api.py b/src/ume/api.py
index 20cc65e..83c565d 100644
--- a/src/ume/api.py
+++ b/src/ume/api.py
@@ -175,6 +175,10 @@ async def _stop_token_cleanup() -> None:
         _token_cleanup_task.cancel()
         try:
             await _token_cleanup_task
+        except asyncio.CancelledError:
+            # The task may have been cancelled before it started running, in
+            # which case awaiting it raises CancelledError directly.
+            pass

4 more lines

         except Exception:
             pass
         _token_cleanup_task = None
 M src/ume/api.py

step 37

$ done: {"notes": "Fixed uncaught asyncio.CancelledError in the API shutdown handler `_stop_token_cleanup` (src/ume/api.py). When the token-cleanup task is cancelled before it ever runs, `await _token_cleanup_task` raises CancelledError, which `except Exception` didn't catch; the exception aborted the shutdown handler before `stop_ledger_c

output · 3 lines

…[171 chars omitted]…
Verified with reproducers (scheduler started before app lifespan, with same and different params, with and without requests) and tests/test_retention.py (10 passed)."}
submitted.