synapse/tests/media/test_oembed.py
Eric Eastwood 5a9ca1e3d9
Introduce Clock.call_when_running(...) to include logcontext by default (#18944)
Introduce `Clock.call_when_running(...)` to wrap startup code in a
logcontext, ensuring we can identify which server generated the logs.

Background:

>  Ideally, nothing from the Synapse homeserver would be logged against the `sentinel` 
>  logcontext as we want to know which server the logs came from. In practice, this is not 
>  always the case yet especially outside of request handling. 
>   
>  Global things outside of Synapse (e.g. Twisted reactor code) should run in the 
>  `sentinel` logcontext. It's only when it calls into application code that a logcontext 
>  gets activated. This means the reactor should be started in the `sentinel` logcontext, 
>  and any time an awaitable yields control back to the reactor, it should reset the 
>  logcontext to be the `sentinel` logcontext. This is important to avoid leaking the 
>  current logcontext to the reactor (which would then get picked up and associated with 
>  the next thing the reactor does). 
>
> *-- `docs/log_contexts.md`

Also adds a lint to prefer `Clock.call_when_running(...)` over
`reactor.callWhenRunning(...)`

Part of https://github.com/element-hq/synapse/issues/18905
2025-09-22 10:27:59 -05:00

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#
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
# Copyright 2021 The Matrix.org Foundation C.I.C.
# Copyright (C) 2023 New Vector, Ltd
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# See the GNU Affero General Public License for more details:
# <https://www.gnu.org/licenses/agpl-3.0.html>.
#
# Originally licensed under the Apache License, Version 2.0:
# <http://www.apache.org/licenses/LICENSE-2.0>.
#
# [This file includes modifications made by New Vector Limited]
#
#
import json
from typing import Any
from parameterized import parameterized
from twisted.internet.testing import MemoryReactor
from synapse.media.oembed import OEmbedProvider, OEmbedResult
from synapse.server import HomeServer
from synapse.types import JsonDict
from synapse.util.clock import Clock
from tests.unittest import HomeserverTestCase
try:
import lxml
except ImportError:
lxml = None # type: ignore[assignment]
class OEmbedTests(HomeserverTestCase):
if not lxml:
skip = "url preview feature requires lxml"
def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
self.oembed = OEmbedProvider(hs)
def parse_response(self, response: JsonDict) -> OEmbedResult:
return self.oembed.parse_oembed_response(
"https://test", json.dumps(response).encode("utf-8")
)
def test_version(self) -> None:
"""Accept versions that are similar to 1.0 as a string or int (or missing)."""
version: Any
for version in ("1.0", 1.0, 1):
result = self.parse_response({"version": version})
# An empty Open Graph response is an error, ensure the URL is included.
self.assertIn("og:url", result.open_graph_result)
# A missing version should be treated as 1.0.
result = self.parse_response({"type": "link"})
self.assertIn("og:url", result.open_graph_result)
# Invalid versions should be rejected.
for version in ("2.0", "1", 1.1, 0, None, {}, []):
result = self.parse_response({"version": version, "type": "link"})
# An empty Open Graph response is an error, ensure the URL is included.
self.assertEqual({}, result.open_graph_result)
def test_cache_age(self) -> None:
"""Ensure a cache-age is parsed properly."""
cache_age: Any
# Correct-ish cache ages are allowed.
for cache_age in ("1", 1.0, 1):
result = self.parse_response({"cache_age": cache_age})
self.assertEqual(result.cache_age, 1000)
# Invalid cache ages are ignored.
for cache_age in ("invalid", {}):
result = self.parse_response({"cache_age": cache_age})
self.assertIsNone(result.cache_age)
# Cache age is optional.
result = self.parse_response({})
self.assertIsNone(result.cache_age)
@parameterized.expand(
[
("title", "title"),
("provider_name", "site_name"),
("thumbnail_url", "image"),
],
name_func=lambda func, num, p: f"{func.__name__}_{p.args[0]}",
)
def test_property(self, oembed_property: str, open_graph_property: str) -> None:
"""Test properties which must be strings."""
result = self.parse_response({oembed_property: "test"})
self.assertIn(f"og:{open_graph_property}", result.open_graph_result)
self.assertEqual(result.open_graph_result[f"og:{open_graph_property}"], "test")
result = self.parse_response({oembed_property: 1})
self.assertNotIn(f"og:{open_graph_property}", result.open_graph_result)
def test_author_name(self) -> None:
"""Test the author_name property."""
result = self.parse_response({"author_name": "test"})
self.assertEqual(result.author_name, "test")
result = self.parse_response({"author_name": 1})
self.assertIsNone(result.author_name)
def test_rich(self) -> None:
"""Test a type of rich."""
result = self.parse_response({"html": "test<img src='foo'>", "type": "rich"})
self.assertIn("og:description", result.open_graph_result)
self.assertIn("og:image", result.open_graph_result)
self.assertEqual(result.open_graph_result["og:description"], "test")
self.assertEqual(result.open_graph_result["og:image"], "foo")
result = self.parse_response({"type": "rich"})
self.assertNotIn("og:description", result.open_graph_result)
result = self.parse_response({"html": 1, "type": "rich"})
self.assertNotIn("og:description", result.open_graph_result)
def test_photo(self) -> None:
"""Test a type of photo."""
result = self.parse_response({"url": "test", "type": "photo"})
self.assertIn("og:image", result.open_graph_result)
self.assertEqual(result.open_graph_result["og:image"], "test")
result = self.parse_response({"type": "photo"})
self.assertNotIn("og:image", result.open_graph_result)
result = self.parse_response({"url": 1, "type": "photo"})
self.assertNotIn("og:image", result.open_graph_result)
def test_video(self) -> None:
"""Test a type of video."""
result = self.parse_response({"html": "test", "type": "video"})
self.assertIn("og:type", result.open_graph_result)
self.assertEqual(result.open_graph_result["og:type"], "video.other")
self.assertIn("og:description", result.open_graph_result)
self.assertEqual(result.open_graph_result["og:description"], "test")
result = self.parse_response({"type": "video"})
self.assertIn("og:type", result.open_graph_result)
self.assertEqual(result.open_graph_result["og:type"], "video.other")
self.assertNotIn("og:description", result.open_graph_result)
result = self.parse_response({"url": 1, "type": "video"})
self.assertIn("og:type", result.open_graph_result)
self.assertEqual(result.open_graph_result["og:type"], "video.other")
self.assertNotIn("og:description", result.open_graph_result)
def test_link(self) -> None:
"""Test type of link."""
result = self.parse_response({"type": "link"})
self.assertIn("og:type", result.open_graph_result)
self.assertEqual(result.open_graph_result["og:type"], "website")
def test_title_html_entities(self) -> None:
"""Test HTML entities in title"""
result = self.parse_response(
{"title": "Why JSON isn&#8217;t a Good Configuration Language"}
)
self.assertEqual(
result.open_graph_result["og:title"],
"Why JSON isnt a Good Configuration Language",
)