86 lines
2.7 KiB
Python
86 lines
2.7 KiB
Python
"""Regression: the gateway delivery ledger must close every SQLite connection.
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Sibling of the cron execution-ledger leak (#69567 / PR #69594). The ledger used
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``with _connect() as conn:`` where ``sqlite3.Connection.__exit__`` commits or
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rolls back but never closes, leaking the db/-wal/-shm file descriptors on every
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call until a long-running gateway exhausts ``RLIMIT_NOFILE``. ``record_obligation``
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runs on every outbound final response, so this is the highest-frequency leaker of
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the set. These tests fail if the deterministic ``close()`` is ever removed again.
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"""
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import sqlite3
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import pytest
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from gateway import delivery_ledger as dl
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class _TrackingConnection:
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"""Delegates to a real sqlite3.Connection while recording close() calls.
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sqlite3.Connection is a static C type: it has no per-instance __dict__ and
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its methods can't be monkeypatched, so open/close tracking is done via a
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delegating wrapper returned in place of the real connection.
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"""
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def __init__(self, real, closed_ids):
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object.__setattr__(self, "_real", real)
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object.__setattr__(self, "_closed_ids", closed_ids)
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def close(self):
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self._closed_ids.append(id(self._real))
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self._real.close()
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def __enter__(self):
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self._real.__enter__()
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return self
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def __exit__(self, exc_type, exc, tb):
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return self._real.__exit__(exc_type, exc, tb)
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def __getattr__(self, name):
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return getattr(self._real, name)
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def __setattr__(self, name, value):
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setattr(self._real, name, value)
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def _point_ledger(monkeypatch, tmp_path):
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monkeypatch.setattr(dl, "_db_path", lambda: tmp_path / "state.db")
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return dl
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def _track_connections(monkeypatch):
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opened, closed = [], []
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real_connect = sqlite3.connect
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def tracking_connect(*args, **kwargs):
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conn = real_connect(*args, **kwargs)
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opened.append(id(conn))
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return _TrackingConnection(conn, closed)
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monkeypatch.setattr(dl.sqlite3, "connect", tracking_connect)
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return opened, closed
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def test_ledger_operations_close_every_connection(monkeypatch, tmp_path):
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"""Every public ledger operation must close the connection it opened."""
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_point_ledger(monkeypatch, tmp_path)
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opened, closed = _track_connections(monkeypatch)
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oid = dl.compute_obligation_id("sess", "msg", "content")
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dl.record_obligation(
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obligation_id=oid, session_key="sess", platform="telegram",
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chat_id="123", thread_id=None, content="hello",
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)
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dl.mark_attempting(oid)
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dl.mark_delivered(oid)
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dl.sweep_recoverable()
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dl.debug_rows()
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assert opened, "expected at least one connection to be opened"
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assert len(opened) == len(closed)
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assert set(opened) == set(closed)
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