matrix-alertbot/tests/test_alertmanager.py

501 lines
20 KiB
Python

from __future__ import annotations
import json
import unittest
from datetime import datetime
from typing import Any, List
from unittest.mock import MagicMock, Mock, patch
import aiohttp
import aiohttp.test_utils
import aiotools
from aiohttp import web, web_request
from diskcache import Cache
from matrix_alertbot.alertmanager import AlertmanagerClient
from matrix_alertbot.errors import (
AlertmanagerServerError,
AlertMismatchError,
AlertNotFoundError,
SilenceNotFoundError,
)
from matrix_alertbot.matcher import AlertMatcher, AlertRegexMatcher
class FakeTimeDelta:
def __init__(self, seconds: int) -> None:
self.seconds = seconds
def __radd__(self, other: Any) -> datetime:
return datetime.utcfromtimestamp(self.seconds)
class AbstractFakeAlertmanagerServer:
def __init__(self) -> None:
self.app = web.Application()
self.app.router.add_routes(
[
web.get("/api/v2/alerts", self.get_alerts),
web.post("/api/v2/silences", self.create_silence),
web.delete("/api/v2/silence/{silence}", self.delete_silence),
]
)
self.runner = web.AppRunner(self.app)
self.response = None
async def __aenter__(self) -> AbstractFakeAlertmanagerServer:
await self.start()
return self
async def __aexit__(self, *args: Any) -> None:
await self.stop()
async def start(self) -> None:
self.port = aiohttp.test_utils.unused_port()
await self.runner.setup()
site = web.TCPSite(self.runner, "localhost", self.port)
await site.start()
async def stop(self) -> None:
await self.runner.cleanup()
async def get_alerts(self, request: web_request.Request) -> web.Response:
raise NotImplementedError
async def create_silence(self, request: web_request.Request) -> web.Response:
raise NotImplementedError
async def delete_silence(self, request: web_request.Request) -> web.Response:
raise NotImplementedError
class FakeAlertmanagerServer(AbstractFakeAlertmanagerServer):
async def get_alerts(self, request: web_request.Request) -> web.Response:
return web.Response(
body=json.dumps(
[
{
"fingerprint": "fingerprint1",
"labels": {"alertname": "alert1"},
"status": {"state": "active"},
},
{
"fingerprint": "fingerprint2",
"labels": {"alertname": "alert2"},
"status": {
"state": "suppressed",
"silencedBy": ["silence1", "silence2"],
},
},
]
),
content_type="application/json",
)
async def create_silence(self, request: web_request.Request) -> web.Response:
return web.Response(
body=json.dumps({"silenceID": "silence1"}), content_type="application/json"
)
async def delete_silence(self, request: web_request.Request) -> web.Response:
return web.Response(status=200, content_type="application/json")
class FakeAlertmanagerServerWithoutAlert(AbstractFakeAlertmanagerServer):
async def get_alerts(self, request: web_request.Request) -> web.Response:
return web.Response(body=json.dumps([]), content_type="application/json")
class FakeAlertmanagerServerWithErrorAlerts(AbstractFakeAlertmanagerServer):
async def get_alerts(self, request: web_request.Request) -> web.Response:
return web.Response(status=500)
class FakeAlertmanagerServerWithErrorCreateSilence(FakeAlertmanagerServer):
async def create_silence(self, request: web_request.Request) -> web.Response:
return web.Response(status=500)
class FakeAlertmanagerServerWithErrorDeleteSilence(FakeAlertmanagerServer):
async def delete_silence(self, request: web_request.Request) -> web.Response:
return web.Response(status=500)
class AlertmanagerClientTestCase(unittest.IsolatedAsyncioTestCase):
async def asyncSetUp(self) -> None:
self.fake_fingerprints = Mock(return_value=["fingerprint1", "fingerprint2"])
self.fake_cache = MagicMock(spec=Cache)
self.fake_cache.__getitem__ = self.fake_fingerprints
async def test_get_alerts_happy(self) -> None:
async with FakeAlertmanagerServer() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
alerts = await alertmanager.get_alerts()
self.assertEqual(
[
{
"fingerprint": "fingerprint1",
"labels": {"alertname": "alert1"},
"status": {"state": "active"},
},
{
"fingerprint": "fingerprint2",
"labels": {"alertname": "alert2"},
"status": {
"state": "suppressed",
"silencedBy": ["silence1", "silence2"],
},
},
],
alerts,
)
async def test_get_alerts_empty(self) -> None:
async with FakeAlertmanagerServerWithoutAlert() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
alerts = await alertmanager.get_alerts()
self.assertEqual([], alerts)
async def test_get_alerts_raise_alertmanager_error(self) -> None:
async with FakeAlertmanagerServerWithErrorAlerts() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
with self.assertRaises(AlertmanagerServerError):
await alertmanager.get_alerts()
async def test_get_alert_happy(self) -> None:
async with FakeAlertmanagerServer() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
alert = await alertmanager.get_alert("fingerprint1")
self.assertEqual(
{
"fingerprint": "fingerprint1",
"labels": {"alertname": "alert1"},
"status": {"state": "active"},
},
alert,
)
async def test_get_alert_raise_alert_not_found(self) -> None:
async with FakeAlertmanagerServerWithoutAlert() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
with self.assertRaises(AlertNotFoundError):
await alertmanager.get_alert("fingerprint1")
async def test_get_alert_raise_alertmanager_error(self) -> None:
async with FakeAlertmanagerServerWithErrorAlerts() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
with self.assertRaises(AlertmanagerServerError):
await alertmanager.get_alert("fingerprint1")
@patch("matrix_alertbot.alertmanager.timedelta", side_effect=FakeTimeDelta)
async def test_create_silence_without_matchers(self, fake_timedelta: Mock) -> None:
async with FakeAlertmanagerServer() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
silence = await alertmanager.create_silence(
"fingerprint1", "1d", "user", []
)
self.assertEqual("silence1", silence)
fake_timedelta.assert_called_once_with(seconds=86400)
@patch("matrix_alertbot.alertmanager.timedelta", side_effect=FakeTimeDelta)
async def test_create_silence_with_complex_duration(
self, fake_timedelta: Mock
) -> None:
async with FakeAlertmanagerServer() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
silence = await alertmanager.create_silence(
"fingerprint1", "1w 3d", "user", []
)
self.assertEqual("silence1", silence)
fake_timedelta.assert_called_once_with(seconds=864000)
@patch("matrix_alertbot.alertmanager.timedelta", side_effect=FakeTimeDelta)
async def test_create_silence_with_matchers(self, fake_timedelta: Mock) -> None:
matchers = [AlertMatcher(label="alertname", value="alert1")]
async with FakeAlertmanagerServer() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
silence = await alertmanager.create_silence(
"fingerprint1",
"1d",
"user",
matchers,
)
self.assertEqual("silence1", silence)
fake_timedelta.assert_called_once_with(seconds=86400)
@patch("matrix_alertbot.alertmanager.timedelta", side_effect=FakeTimeDelta)
async def test_create_silence_with_regex_matchers(
self, fake_timedelta: Mock
) -> None:
matchers: List[AlertMatcher] = [
AlertRegexMatcher(label="alertname", regex=r"alert\d+")
]
async with FakeAlertmanagerServer() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
silence = await alertmanager.create_silence(
"fingerprint1",
"1d",
"user",
matchers,
)
self.assertEqual("silence1", silence)
fake_timedelta.assert_called_once_with(seconds=86400)
async def test_create_silence_raise_missing_label(self) -> None:
matchers = [
AlertMatcher(label="alertname", value="alert1"),
AlertMatcher(label="severity", value="critical"),
]
async with FakeAlertmanagerServer() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
with self.assertRaises(AlertMismatchError):
await alertmanager.create_silence(
"fingerprint1",
"1d",
"user",
matchers,
)
async def test_create_silence_raise_mismatch_label(self) -> None:
matchers = [AlertMatcher(label="alertname", value="alert2")]
async with FakeAlertmanagerServer() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
with self.assertRaises(AlertMismatchError):
await alertmanager.create_silence(
"fingerprint1",
"1d",
"user",
matchers,
)
async def test_create_silence_raise_mismatch_regex_label(self) -> None:
matchers: List[AlertMatcher] = [
AlertRegexMatcher(label="alertname", regex=r"alert[^\d]+")
]
async with FakeAlertmanagerServer() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
with self.assertRaises(AlertMismatchError):
await alertmanager.create_silence(
"fingerprint1",
"1d",
"user",
matchers,
)
async def test_create_silence_raise_alert_not_found(self) -> None:
async with FakeAlertmanagerServerWithoutAlert() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
with self.assertRaises(AlertNotFoundError):
await alertmanager.create_silence("fingerprint1", "1d", "user", [])
async def test_create_silence_raise_alertmanager_error(self) -> None:
async with FakeAlertmanagerServerWithErrorCreateSilence() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
await alertmanager.get_alert("fingerprint1")
with self.assertRaises(AlertmanagerServerError):
await alertmanager.create_silence("fingerprint1", "1d", "user", [])
async def test_delete_silences_without_matchers(self) -> None:
async with FakeAlertmanagerServer() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
silences = await alertmanager.delete_silences("fingerprint2", [])
self.assertEqual(["silence1", "silence2"], silences)
async def test_delete_silences_with_matchers(self) -> None:
matchers = [AlertMatcher(label="alertname", value="alert2")]
async with FakeAlertmanagerServer() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
silences = await alertmanager.delete_silences("fingerprint2", matchers)
self.assertEqual(["silence1", "silence2"], silences)
async def test_delete_silences_with_regex_matchers(self) -> None:
matchers: List[AlertMatcher] = [
AlertRegexMatcher(label="alertname", regex=r"alert\d+")
]
async with FakeAlertmanagerServer() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
silences = await alertmanager.delete_silences("fingerprint2", matchers)
self.assertEqual(["silence1", "silence2"], silences)
async def test_delete_silences_raise_missing_label(self) -> None:
matchers = [
AlertMatcher(label="alertname", value="alert2"),
AlertMatcher(label="severity", value="critical"),
]
async with FakeAlertmanagerServer() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
with self.assertRaises(AlertMismatchError):
await alertmanager.delete_silences("fingerprint2", matchers)
async def test_delete_silences_raise_mismatch_label(self) -> None:
matchers = [
AlertMatcher(label="alertname", value="alert1"),
]
async with FakeAlertmanagerServer() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
with self.assertRaises(AlertMismatchError):
await alertmanager.delete_silences("fingerprint2", matchers)
async def test_delete_silences_raise_mismatch_regex_label(self) -> None:
matchers: List[AlertMatcher] = [
AlertRegexMatcher(label="alertname", regex=r"alert[^\d]+"),
]
async with FakeAlertmanagerServer() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
with self.assertRaises(AlertMismatchError):
await alertmanager.delete_silences("fingerprint2", matchers)
async def test_delete_silences_raise_silence_not_found(self) -> None:
async with FakeAlertmanagerServer() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
with self.assertRaises(SilenceNotFoundError):
await alertmanager.delete_silences("fingerprint1", [])
async def test_delete_silences_raise_alert_not_found(self) -> None:
async with FakeAlertmanagerServerWithoutAlert() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
with self.assertRaises(AlertNotFoundError):
await alertmanager.delete_silences("fingerprint2", [])
async def test_delete_silences_raise_alertmanager_error(self) -> None:
async with FakeAlertmanagerServerWithErrorDeleteSilence() as fake_alertmanager_server:
port = fake_alertmanager_server.port
alertmanager = AlertmanagerClient(
f"http://localhost:{port}", self.fake_cache
)
async with aiotools.closing_async(alertmanager):
await alertmanager.get_alert("fingerprint1")
with self.assertRaises(AlertmanagerServerError):
await alertmanager.delete_silences("fingerprint2", [])
async def test_find_alert_happy(self) -> None:
alertmanager = AlertmanagerClient("http://localhost", self.fake_cache)
alert = alertmanager._find_alert(
"fingerprint1", [{"fingerprint": "fingerprint1"}]
)
self.assertEqual({"fingerprint": "fingerprint1"}, alert)
async def test_find_alert_raise_alert_not_found(self) -> None:
alertmanager = AlertmanagerClient("http://localhost", self.fake_cache)
with self.assertRaises(AlertNotFoundError):
alertmanager._find_alert("fingerprint2", [{"fingerprint": "fingerprint1"}])
if __name__ == "__main__":
unittest.main()