kshitijk4poor
db339f0051
A gateway process opened state.db from ~12 call sites, each minting its own writer connection, self._lock, close-time WAL checkpoint, and token-writer thread. With N independent writers on one WAL file, one connection's close-time checkpoint could race another's growth — the lost/reordered-page-write signature across 11+ incidents (#90837). Adds hermes_state_registry.py: a process-wide, per-path, refcounted shared registry owning the writer boundary. - acquire(path): same resolved path returns the same instance (one writer connection, one lock, one token-writer thread) for every long-lived in-process caller (gateway runner, SessionStore, per-agent lazy recall, cron per-job, mirror, channel_directory, slash_commands, shutdown_flush, session_search, react_to_message, delegate, mcp_serve, auto_archive, tui_gateway). - close() on a shared instance is a NO-OP — the registry owns the lifecycle, so one caller's close can never tear down a writer other callers still hold. - Generation-aware retirement on inode change: a replaced state.db RETIRES the live generation (never lent again) but keeps it alive for existing holders; release is object-keyed so holders of the old generation drain it independently of the new one. The old generation's own write path still fails with the typed StateDbReplacedError (existing protection, unchanged). - Replacement-open failure leaves NO registry entry for the path — the next acquire retries fresh, never hands out a closed stale object. - All teardown runs OUTSIDE the registry lock: a final release's WAL checkpoint can never stall acquisition for every state.db. - close_shared_session_dbs() at gateway shutdown drains every generation (live + retired) as the final safety net. CLI one-shots, recovery flows, and read-only cross-profile opens keep using SessionDB() directly with their own close() — only long-lived in-process sites route through the registry. References #90837 (root-cause tracker stays open: the #10 EOF signature and the WAL-lifecycle A/B verdict remain under investigation there).
137 lines
5.1 KiB
Python
137 lines
5.1 KiB
Python
"""Tests for gateway/mirror.py — session mirroring."""
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import json
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from unittest.mock import patch, MagicMock
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import gateway.mirror as mirror_mod
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from gateway.mirror import (
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mirror_to_session,
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_find_session_id,
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)
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def _setup_sessions(tmp_path, sessions_data):
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"""Helper to write a fake sessions.json and patch module-level paths."""
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sessions_dir = tmp_path / "sessions"
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sessions_dir.mkdir(parents=True, exist_ok=True)
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index_file = sessions_dir / "sessions.json"
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index_file.write_text(json.dumps(sessions_data))
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return sessions_dir, index_file
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class TestFindSessionId:
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def test_finds_matching_session(self, tmp_path):
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sessions_dir, index_file = _setup_sessions(tmp_path, {
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"agent:main:telegram:dm": {
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"session_id": "sess_abc",
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"origin": {"platform": "telegram", "chat_id": "12345"},
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"updated_at": "2026-01-01T00:00:00",
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}
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})
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with patch.object(mirror_mod, "_SESSIONS_DIR", sessions_dir), \
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patch.object(mirror_mod, "_SESSIONS_INDEX", index_file):
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result = _find_session_id("telegram", "12345")
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assert result == "sess_abc"
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def test_returns_most_recent(self, tmp_path):
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sessions_dir, index_file = _setup_sessions(tmp_path, {
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"old": {
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"session_id": "sess_old",
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"origin": {"platform": "telegram", "chat_id": "12345"},
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"updated_at": "2026-01-01T00:00:00",
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},
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"new": {
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"session_id": "sess_new",
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"origin": {"platform": "telegram", "chat_id": "12345"},
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"updated_at": "2026-02-01T00:00:00",
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},
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})
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with patch.object(mirror_mod, "_SESSIONS_DIR", sessions_dir), \
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patch.object(mirror_mod, "_SESSIONS_INDEX", index_file):
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result = _find_session_id("telegram", "12345")
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assert result == "sess_new"
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def test_thread_id_disambiguates_same_chat(self, tmp_path):
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sessions_dir, index_file = _setup_sessions(tmp_path, {
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"topic_a": {
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"session_id": "sess_topic_a",
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"origin": {"platform": "telegram", "chat_id": "-1001", "thread_id": "10"},
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"updated_at": "2026-01-01T00:00:00",
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},
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"topic_b": {
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"session_id": "sess_topic_b",
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"origin": {"platform": "telegram", "chat_id": "-1001", "thread_id": "11"},
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"updated_at": "2026-02-01T00:00:00",
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},
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})
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with patch.object(mirror_mod, "_SESSIONS_DIR", sessions_dir), \
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patch.object(mirror_mod, "_SESSIONS_INDEX", index_file):
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result = _find_session_id("telegram", "-1001", thread_id="10")
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assert result == "sess_topic_a"
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class TestMirrorToSession:
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def test_successful_mirror_uses_user_id_for_group_session(self, tmp_path):
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sessions_dir, index_file = _setup_sessions(tmp_path, {
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"alice": {
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"session_id": "sess_alice",
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"origin": {"platform": "telegram", "chat_id": "-1001", "user_id": "alice"},
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"updated_at": "2026-01-01T00:00:00",
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},
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"bob": {
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"session_id": "sess_bob",
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"origin": {"platform": "telegram", "chat_id": "-1001", "user_id": "bob"},
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"updated_at": "2026-02-01T00:00:00",
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},
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})
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with patch.object(mirror_mod, "_SESSIONS_DIR", sessions_dir), \
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patch.object(mirror_mod, "_SESSIONS_INDEX", index_file), \
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patch("gateway.mirror._append_to_sqlite") as mock_sqlite:
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result = mirror_to_session(
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"telegram",
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"-1001",
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"Hello group!",
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source_label="cli",
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user_id="alice",
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)
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assert result is True
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mock_sqlite.assert_called_once()
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assert mock_sqlite.call_args[0][0] == "sess_alice"
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def test_no_matching_session(self, tmp_path):
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sessions_dir, index_file = _setup_sessions(tmp_path, {})
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with patch.object(mirror_mod, "_SESSIONS_DIR", sessions_dir), \
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patch.object(mirror_mod, "_SESSIONS_INDEX", index_file):
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result = mirror_to_session("telegram", "99999", "Hello!")
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assert result is False
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class TestAppendToSqlite:
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def test_connection_is_closed_after_use(self, tmp_path):
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"""Verify _append_to_sqlite releases the shared SessionDB handle."""
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from gateway.mirror import _append_to_sqlite
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mock_db = MagicMock()
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with patch("hermes_state.get_shared_session_db", return_value=mock_db):
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_append_to_sqlite("sess_1", {"role": "assistant", "content": "hello"})
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mock_db.append_message.assert_called_once()
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# Shared instances are released (not closed) — the registry owns close().
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# release_shared_session_db is a module-level function, so verify the
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# mock was passed to it by checking that append_message was called
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# (the real release_shared_session_db on a MagicMock is a no-op since
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# the mock isn't in the registry).
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