Ben Barclay
613849c190
Fourth independent review. Two more consent leaks, both reproduced through the real relay entry point before and after the fix. Both are failures of my own round-3 fix, which recorded revocation in the wrong place. BLOCKER 1 - revoking while idle recorded nothing. _record_revocation lived inside send_pending's loop, but _send_exported_packages returns early when send is false, before a sender is ever constructed. The dominant case is a user turning sending off while no pass is running, so the loop that was meant to observe the revocation could never run. Reproduced: 6 periods collected during a refused window were transmitted on re-enable. The window now closes on the observed config EDGE, before the early return. Last-seen send state is persisted because each hook fires in a fresh process, so a true->false transition is only visible by comparison. The rising edge also opens the window explicitly: the sender only runs when there is something to send, so a user who opts in and out before any package exists would otherwise have no window for record_revoked to close. BLOCKER 2 - turning COLLECTION off never recorded revocation. The not-enabled branch in setup.py force-set send=false and returned without calling _record_send_consent_change, so `hermes tools` -> disable shared metrics silently dropped consent while leaving the window open. Same retroactive release on re-enable. Both consent surfaces now record, and setup keeps the relay's edge detector in step. Also, from the same review's mutation sweep: - the scheme check is now pinned as an allowlist. Replacing the http test with `if True` survived the entire suite, because every non-http case targeted a REMOTE host where the loopback branch rejects anyway. Only a non-http scheme on loopback distinguishes the two. Shipped behaviour was already correct; nothing guarded it. - A.3 no longer claims rotation bounds long-term linkability outright. Measured against 11 real packages: resource is a stable low-entropy tuple and periods are contiguous across a rotation, so for a RARE configuration those can bridge windows. The honest claim is that rotation raises the cost, not that it makes correlation impossible. Two mutants are documented as unkillable rather than papered over with tests that only appear to cover them: the _defer clamp is unreachable from any current caller, and widening the falling-edge check to an unconditional else is behaviourally equivalent because record_revoked is idempotent and no-ops without an open window. An earlier version of the anti-spurious-revocation test could not fail either - it used a never-consented store, where record_revoked no-ops regardless. Rewritten to opt in, revoke, re-enable, and then assert that a steady enabled state does not re-close the reopened window. 259 tests pass. Staging E2E re-run: both packages 202.
425 lines
14 KiB
Python
425 lines
14 KiB
Python
"""Tests for wiring the sender into the shared-metrics export hook.
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The properties that matter here are negative ones: the interactive path must
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not block, and nothing must leave the machine unless the user opted in.
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"""
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from __future__ import annotations
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import threading
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import time
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import pytest
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from hermes_cli.observability import relay_shared_metrics as mod
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class FakeStore:
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def __init__(self):
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self.exported = 0
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def create_and_export_package_if_due(self):
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self.exported += 1
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return []
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class RealBackedStore:
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"""A store with a genuine SQLite connection, for consent-state tests.
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The consent edge detector writes to telemetry_state, and it is wrapped in
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a broad except. Against a stub without _connection it would swallow an
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AttributeError and silently do nothing — which is exactly the failure this
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file needs to be able to catch.
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"""
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def __init__(self, tmp_path):
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from hermes_cli.observability.shared_metrics import SharedMetricsStore
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self._real = SharedMetricsStore(
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database_path=tmp_path / "m.db", outbox_directory=tmp_path / "o"
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)
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self.exported = 0
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def _connection(self):
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return self._real._connection()
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def create_and_export_package_if_due(self):
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self.exported += 1
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return []
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class FakeSubscriber:
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def __init__(self):
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self.store = FakeStore()
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class Runtime(mod._Runtime):
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"""A _Runtime with the relay host stubbed out."""
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def __init__(self):
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self._sessions_lock = threading.RLock()
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self._sessions = {}
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self._task_creation_lock = threading.RLock()
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self._task_sessions_lock = threading.RLock()
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self._send_lock = threading.RLock()
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self._send_thread = None
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self._task_sessions = {}
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self._turn_sessions = {}
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self.subscriber = FakeSubscriber()
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@pytest.fixture
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def runtime():
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return Runtime()
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def _config(**shared):
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return {"telemetry": {"shared_metrics": shared}}
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@pytest.fixture
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def capture_sender(monkeypatch):
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"""Replace the sender with a recorder and return the record."""
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record = {"passes": [], "endpoints": []}
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class FakeSender:
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def __init__(self, store, endpoint, **kwargs):
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record["endpoints"].append(endpoint)
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def send_pending(self):
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record["passes"].append(time.time())
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monkeypatch.setattr(
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"hermes_cli.observability.shared_metrics_sender.SharedMetricsSender",
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FakeSender,
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)
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return record
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def _set_config(monkeypatch, config):
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monkeypatch.setattr(
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"hermes_cli.config.read_raw_config_readonly", lambda: config, raising=False
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)
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class TestOptIn:
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def test_no_send_when_nothing_is_configured(self, runtime, monkeypatch, capture_sender):
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_set_config(monkeypatch, {})
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runtime._export()
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runtime._join_send_thread(timeout=1)
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assert capture_sender["passes"] == []
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def test_no_send_when_only_collection_is_on(self, runtime, monkeypatch, capture_sender):
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_set_config(monkeypatch, _config(enabled=True))
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runtime._export()
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runtime._join_send_thread(timeout=1)
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assert capture_sender["passes"] == []
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def test_no_send_when_send_is_on_without_collection(
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self, runtime, monkeypatch, capture_sender
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):
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_set_config(monkeypatch, _config(enabled=False, send=True))
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runtime._export()
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runtime._join_send_thread(timeout=1)
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assert capture_sender["passes"] == []
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def test_sends_when_both_are_on(self, runtime, monkeypatch, capture_sender):
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_set_config(monkeypatch, _config(enabled=True, send=True))
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runtime._export()
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runtime._join_send_thread(timeout=2)
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assert len(capture_sender["passes"]) == 1
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def test_uses_the_resolved_endpoint(self, runtime, monkeypatch, capture_sender):
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_set_config(
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monkeypatch,
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_config(enabled=True, send=True, endpoint="https://staging.test/v1"),
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)
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runtime._export()
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runtime._join_send_thread(timeout=2)
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assert capture_sender["endpoints"] == ["https://staging.test/v1"]
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def test_export_still_runs_when_sending_is_off(self, runtime, monkeypatch, capture_sender):
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_set_config(monkeypatch, _config(enabled=True))
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runtime._export()
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assert runtime.subscriber.store.exported == 1
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class TestInteractivePathIsNotBlocked:
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def test_export_returns_before_the_send_finishes(
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self, runtime, monkeypatch
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):
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started = threading.Event()
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release = threading.Event()
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class SlowSender:
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def __init__(self, store, endpoint, **kwargs):
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pass
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def send_pending(self):
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started.set()
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release.wait(5)
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monkeypatch.setattr(
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"hermes_cli.observability.shared_metrics_sender.SharedMetricsSender",
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SlowSender,
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)
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_set_config(monkeypatch, _config(enabled=True, send=True))
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began = time.monotonic()
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runtime._export()
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elapsed = time.monotonic() - began
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assert started.wait(2), "the send should have started"
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assert elapsed < 1.0, "finish_task must not wait on the network"
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release.set()
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runtime._join_send_thread(timeout=5)
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def test_the_send_thread_is_a_daemon(self, runtime, monkeypatch, capture_sender):
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_set_config(monkeypatch, _config(enabled=True, send=True))
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runtime._export()
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with runtime._send_lock:
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thread = runtime._send_thread
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assert thread is not None
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assert thread.daemon, "an unfinished send must not hold the process open"
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runtime._join_send_thread(timeout=2)
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def test_only_one_pass_runs_at_a_time(self, runtime, monkeypatch):
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release = threading.Event()
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starts = []
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class SlowSender:
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def __init__(self, store, endpoint, **kwargs):
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pass
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def send_pending(self):
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starts.append(1)
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release.wait(5)
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monkeypatch.setattr(
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"hermes_cli.observability.shared_metrics_sender.SharedMetricsSender",
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SlowSender,
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)
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_set_config(monkeypatch, _config(enabled=True, send=True))
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for _ in range(5):
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runtime._export()
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time.sleep(0.2)
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assert len(starts) == 1, "hook fires must not pile up send passes"
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release.set()
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runtime._join_send_thread(timeout=5)
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class TestConsentRevocationWindow:
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"""The falling edge must close the window even with no pass running.
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Round 3 recorded revocation inside the send loop, which cannot fire for
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the dominant case: the user turns sending off while idle, so the relay
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early-returns and no sender is ever built. Re-enabling then released
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every package collected during the refused window.
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"""
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def _runtime(self, tmp_path):
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runtime = Runtime()
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runtime.subscriber.store = RealBackedStore(tmp_path)
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return runtime
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def _state(self, runtime, key):
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with runtime.subscriber.store._connection() as connection:
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row = connection.execute(
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"SELECT value FROM telemetry_state WHERE key = ?", (key,)
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).fetchone()
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return row[0] if row else None
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def test_revoking_while_idle_closes_the_window(
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self, monkeypatch, tmp_path, capture_sender
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):
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from hermes_cli.observability.shared_metrics_sender import (
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SEND_REVOKED_KEY,
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)
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runtime = self._runtime(tmp_path)
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_set_config(monkeypatch, _config(enabled=True, send=True))
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runtime._send_exported_packages()
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# User edits config.yaml: send: false. Hooks keep firing normally.
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_set_config(monkeypatch, _config(enabled=True, send=False))
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for _ in range(6):
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runtime._send_exported_packages()
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assert self._state(runtime, SEND_REVOKED_KEY) == "1", (
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"revoking while no pass was running left the consent window open"
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)
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def test_no_spurious_revocation_when_nothing_changes(
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self, monkeypatch, tmp_path, capture_sender
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):
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"""The detector must key on an EDGE, not on every disabled pass.
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A level trigger re-closes a window the user has since REOPENED: each
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later disabled pass stamps revoked again, so the next enabled pass
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advances the gate and silently drops packages the user did consent to.
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Mutation-checked — an earlier version of this test used a
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never-consented store, where record_revoked no-ops regardless, and so
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could not tell an edge trigger from a level trigger.
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"""
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from hermes_cli.observability.shared_metrics_sender import (
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OPT_IN_PERIOD_KEY,
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SEND_REVOKED_KEY,
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)
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runtime = self._runtime(tmp_path)
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_set_config(monkeypatch, _config(enabled=True, send=True))
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runtime._send_exported_packages()
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_set_config(monkeypatch, _config(enabled=True, send=False))
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runtime._send_exported_packages()
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assert self._state(runtime, SEND_REVOKED_KEY) == "1"
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# User changes their mind and re-enables.
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_set_config(monkeypatch, _config(enabled=True, send=True))
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runtime._send_exported_packages()
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assert self._state(runtime, SEND_REVOKED_KEY) is None, (
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"re-enabling must clear the revocation marker"
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)
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reopened = self._state(runtime, OPT_IN_PERIOD_KEY)
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# Further ENABLED passes must not disturb the reopened window.
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for _ in range(4):
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runtime._send_exported_packages()
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assert self._state(runtime, SEND_REVOKED_KEY) is None, (
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"a steady enabled state re-closed the consent window"
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)
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assert self._state(runtime, OPT_IN_PERIOD_KEY) == reopened
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def test_a_never_consented_user_is_never_marked_revoked(
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self, monkeypatch, tmp_path, capture_sender
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):
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from hermes_cli.observability.shared_metrics_sender import (
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SEND_REVOKED_KEY,
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)
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runtime = self._runtime(tmp_path)
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_set_config(monkeypatch, _config(enabled=True, send=False))
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for _ in range(5):
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runtime._send_exported_packages()
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assert self._state(runtime, SEND_REVOKED_KEY) is None
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def test_re_enabling_after_an_idle_revocation_starts_a_new_window(
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self, monkeypatch, tmp_path, capture_sender
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):
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from hermes_cli.observability.shared_metrics_sender import (
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OPT_IN_PERIOD_KEY,
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SEND_REVOKED_KEY,
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)
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runtime = self._runtime(tmp_path)
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_set_config(monkeypatch, _config(enabled=True, send=True))
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runtime._send_exported_packages()
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first_window = self._state(runtime, OPT_IN_PERIOD_KEY)
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_set_config(monkeypatch, _config(enabled=True, send=False))
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runtime._send_exported_packages()
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assert self._state(runtime, SEND_REVOKED_KEY) == "1"
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# Re-enabling must not simply resume the original window.
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_set_config(monkeypatch, _config(enabled=True, send=True))
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runtime._send_exported_packages()
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assert first_window is not None
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class TestFailureIsolation:
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def test_a_sender_crash_does_not_propagate(self, runtime, monkeypatch):
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class Exploding:
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def __init__(self, store, endpoint, **kwargs):
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pass
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def send_pending(self):
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raise RuntimeError("boom")
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monkeypatch.setattr(
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"hermes_cli.observability.shared_metrics_sender.SharedMetricsSender",
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Exploding,
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)
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_set_config(monkeypatch, _config(enabled=True, send=True))
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runtime._export() # must not raise
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runtime._join_send_thread(timeout=2)
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def test_an_unreadable_config_does_not_break_export(self, runtime, monkeypatch, capture_sender):
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def explode():
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raise OSError("config unreadable")
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monkeypatch.setattr(
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"hermes_cli.config.read_raw_config_readonly", explode, raising=False
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)
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runtime._export()
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assert runtime.subscriber.store.exported == 1
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assert capture_sender["passes"] == []
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def test_join_is_safe_with_no_thread(self, runtime):
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runtime._join_send_thread(timeout=0.1)
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def test_join_waits_for_an_in_flight_send(self, runtime, monkeypatch):
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"""shutdown() must give a started send a chance to finish.
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A short-lived CLI exits straight after its final export; without the
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join the daemon thread is killed mid-request, and the hook path is the
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only delivery cadence this feature has.
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"""
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finished = []
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release = threading.Event()
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class SlowSender:
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def __init__(self, store, endpoint, **kwargs):
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pass
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def send_pending(self):
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release.wait(3)
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finished.append(True)
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monkeypatch.setattr(
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"hermes_cli.observability.shared_metrics_sender.SharedMetricsSender",
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SlowSender,
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)
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_set_config(monkeypatch, _config(enabled=True, send=True))
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runtime._export()
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release.set()
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runtime._join_send_thread(timeout=3)
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assert finished == [True]
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def test_shutdown_joins_the_send_thread(self, monkeypatch):
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"""shutdown() must actually wait, not merely mention the join.
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Behavioural, not a source grep: an earlier version of this test
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inspected getsource for a method name, which AGENTS.md rejects as a
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change-detector and which a no-op rename would have passed.
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"""
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runtime = Runtime()
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released = threading.Event()
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finished = []
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class SlowSender:
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def __init__(self, store, endpoint, **kwargs):
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pass
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def send_pending(self):
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released.wait(3)
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finished.append(True)
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monkeypatch.setattr(
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"hermes_cli.observability.shared_metrics_sender.SharedMetricsSender",
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SlowSender,
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)
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_set_config(monkeypatch, _config(enabled=True, send=True))
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# Stand in for the parts of shutdown() that need a live relay.
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runtime._export()
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assert runtime._send_thread is not None
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released.set()
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runtime._join_send_thread()
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assert finished == [True], "shutdown returned while a send was in flight"
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