hermes-agent/tests/gateway/test_cron_fire_webhook.py
Ben 3fc7b624d8 feat(cron,gateway): NAS-JWT fire verifier + /api/cron/fire webhook (Chronos)
Phase 4E (E.1 + E.2). The inbound side of Chronos: NAS POSTs the agent when a
one-shot fires; the agent verifies a NAS-minted JWT and runs the job.

E.1 — plugins/cron/chronos/verify.py:
- verify_nas_fire_token(token, expected_audience, jwks_or_key, issuer): verifies
  signature against the NAS JWKS (RS/ES family; symmetric rejected), aud == this
  agent, exp/nbf, iss, and purpose == "cron_fire" (so a general agent JWT can't
  be replayed against the fire endpoint). Returns claims or None; never raises.
  Crypto delegated to PyJWT[crypto] (already a declared dep) — no hand-rolled
  JWT, no new dependency. No key configured → refuse (never unsigned-decode a
  security boundary).
- get_fire_verifier(): pluggable indirection so the DQ-4 escape hatch
  (direct per-job cron-key) can swap in with no handler change.

E.2 — gateway/platforms/api_server.py:
- POST /api/cron/fire (registered only when _CRON_AVAILABLE). Authenticated by
  the NAS-JWT via get_fire_verifier() — NOT API_SERVER_KEY (NAS holds no API
  key; this is the only inbound that triggers remote job execution, so it gets
  its own purpose-scoped check). Verifier args come from cron.chronos.* config.
  401 on bad/missing/forged token. 400 on missing job_id. On success: 202 +
  fire_due runs in the background (so a long agent turn never trips NAS's HTTP
  timeout); the store CAS claim inside fire_due de-dupes a scheduler retry.

Tests:
- test_chronos_verify (11): REAL RS256 signing — valid→claims, wrong-aud,
  missing/wrong purpose, expired, wrong-iss, tampered-signature (attacker key),
  no-key-refuse, empty-token, JWKS-URL key resolution, get_fire_verifier.
- test_cron_fire_webhook (5): valid→202+fire, invalid→401+no-fire, missing
  token→401, missing job_id→400, and fire path does NOT require API_SERVER_KEY.
api_server regression suites (214) green.

E.3 (NAS endpoints) is a separate cross-repo PR; the wire contract lands next
(docs/chronos-managed-cron-contract.md).
2026-06-18 14:46:33 +10:00

152 lines
5.3 KiB
Python

"""Tests for the Chronos cron-fire webhook (POST /api/cron/fire) — Phase 4E.2.
The webhook authenticates a NAS-minted JWT via the pluggable fire-verifier
(NOT API_SERVER_KEY), then runs the job via the resolved provider's fire_due in
the background, returning 202. These tests monkeypatch the verifier and
resolve_cron_scheduler — the verifier itself is tested with real crypto in
test_chronos_verify.py.
"""
import asyncio
import pytest
from aiohttp import web
from aiohttp.test_utils import TestClient, TestServer
from gateway.config import PlatformConfig
from gateway.platforms.api_server import APIServerAdapter, cors_middleware
_MOD = "gateway.platforms.api_server"
def _make_adapter() -> APIServerAdapter:
return APIServerAdapter(PlatformConfig(enabled=True, extra={"key": "sk-secret"}))
def _create_app(adapter: APIServerAdapter) -> web.Application:
app = web.Application(middlewares=[cors_middleware])
app["api_server_adapter"] = adapter
app.router.add_post("/api/cron/fire", adapter._handle_cron_fire)
return app
@pytest.fixture
def adapter():
return _make_adapter()
class _SpyProvider:
"""Records fire_due calls; stands in for the resolved provider."""
def __init__(self):
self.fired = []
def fire_due(self, job_id, *, adapters=None, loop=None):
self.fired.append(job_id)
return True
@pytest.mark.asyncio
async def test_valid_token_accepts_and_fires(adapter, monkeypatch):
"""Valid NAS-JWT + {job_id} → 202 and fire_due invoked with that id."""
spy = _SpyProvider()
monkeypatch.setattr("cron.scheduler_provider.resolve_cron_scheduler", lambda: spy)
# verifier returns claims (valid token)
monkeypatch.setattr(
"plugins.cron.chronos.verify.get_fire_verifier",
lambda: (lambda **kw: {"purpose": "cron_fire", "aud": "agent:x"}),
)
app = _create_app(adapter)
async with TestClient(TestServer(app)) as cli:
resp = await cli.post("/api/cron/fire",
headers={"Authorization": "Bearer good"},
json={"job_id": "abc123"})
assert resp.status == 202
data = await resp.json()
assert data["job_id"] == "abc123"
# fire runs in a background thread/task — give it a beat to land.
for _ in range(50):
if spy.fired:
break
await asyncio.sleep(0.01)
assert spy.fired == ["abc123"]
@pytest.mark.asyncio
async def test_invalid_token_401_and_no_fire(adapter, monkeypatch):
"""Bad/forged token → 401, fire_due NOT invoked."""
spy = _SpyProvider()
monkeypatch.setattr("cron.scheduler_provider.resolve_cron_scheduler", lambda: spy)
monkeypatch.setattr(
"plugins.cron.chronos.verify.get_fire_verifier",
lambda: (lambda **kw: None), # verification fails
)
app = _create_app(adapter)
async with TestClient(TestServer(app)) as cli:
resp = await cli.post("/api/cron/fire",
headers={"Authorization": "Bearer forged"},
json={"job_id": "abc123"})
assert resp.status == 401
await asyncio.sleep(0.05)
assert spy.fired == []
@pytest.mark.asyncio
async def test_missing_token_401(adapter, monkeypatch):
"""No Authorization header → verifier gets empty token → 401."""
spy = _SpyProvider()
monkeypatch.setattr("cron.scheduler_provider.resolve_cron_scheduler", lambda: spy)
# Real verifier: empty token returns None.
app = _create_app(adapter)
async with TestClient(TestServer(app)) as cli:
resp = await cli.post("/api/cron/fire", json={"job_id": "abc123"})
assert resp.status == 401
assert spy.fired == []
@pytest.mark.asyncio
async def test_missing_job_id_400(adapter, monkeypatch):
"""Valid token but no job_id → 400, no fire."""
spy = _SpyProvider()
monkeypatch.setattr("cron.scheduler_provider.resolve_cron_scheduler", lambda: spy)
monkeypatch.setattr(
"plugins.cron.chronos.verify.get_fire_verifier",
lambda: (lambda **kw: {"purpose": "cron_fire"}),
)
app = _create_app(adapter)
async with TestClient(TestServer(app)) as cli:
resp = await cli.post("/api/cron/fire",
headers={"Authorization": "Bearer good"},
json={})
assert resp.status == 400
assert spy.fired == []
@pytest.mark.asyncio
async def test_fire_does_not_require_api_server_key(adapter, monkeypatch):
"""The fire endpoint must NOT gate on API_SERVER_KEY — auth is the NAS-JWT.
A request with NO API key header but a valid fire token still succeeds."""
spy = _SpyProvider()
monkeypatch.setattr("cron.scheduler_provider.resolve_cron_scheduler", lambda: spy)
monkeypatch.setattr(
"plugins.cron.chronos.verify.get_fire_verifier",
lambda: (lambda **kw: {"purpose": "cron_fire"}),
)
app = _create_app(adapter)
async with TestClient(TestServer(app)) as cli:
# Bearer is the FIRE token, not the API_SERVER_KEY "sk-secret".
resp = await cli.post("/api/cron/fire",
headers={"Authorization": "Bearer nas-jwt"},
json={"job_id": "j9"})
assert resp.status == 202
for _ in range(50):
if spy.fired:
break
await asyncio.sleep(0.01)
assert spy.fired == ["j9"]