forked-synapse/tests/logging/test_remote_handler.py
David Robertson ffc2ee521d
Use mypy 1.0 (#15052)
* Update mypy and mypy-zope
* Remove unused ignores

These used to suppress

```
synapse/storage/engines/__init__.py:28: error: "__new__" must return a
class instance (got "NoReturn")  [misc]
```

and

```
synapse/http/matrixfederationclient.py:1270: error: "BaseException" has no attribute "reasons"  [attr-defined]
```

(note that we check `hasattr(e, "reasons")` above)

* Avoid empty body warnings, sometimes by marking methods as abstract

E.g.

```
tests/handlers/test_register.py:58: error: Missing return statement  [empty-body]
tests/handlers/test_register.py:108: error: Missing return statement  [empty-body]
```

* Suppress false positive about `JaegerConfig`

Complaint was

```
synapse/logging/opentracing.py:450: error: Function "Type[Config]" could always be true in boolean context  [truthy-function]
```

* Fix not calling `is_state()`

Oops!

```
tests/rest/client/test_third_party_rules.py:428: error: Function "Callable[[], bool]" could always be true in boolean context  [truthy-function]
```

* Suppress false positives from ParamSpecs

````
synapse/logging/opentracing.py:971: error: Argument 2 to "_custom_sync_async_decorator" has incompatible type "Callable[[Arg(Callable[P, R], 'func'), **P], _GeneratorContextManager[None]]"; expected "Callable[[Callable[P, R], **P], _GeneratorContextManager[None]]"  [arg-type]
synapse/logging/opentracing.py:1017: error: Argument 2 to "_custom_sync_async_decorator" has incompatible type "Callable[[Arg(Callable[P, R], 'func'), **P], _GeneratorContextManager[None]]"; expected "Callable[[Callable[P, R], **P], _GeneratorContextManager[None]]"  [arg-type]
````

* Drive-by improvement to `wrapping_logic` annotation

* Workaround false "unreachable" positives

See https://github.com/Shoobx/mypy-zope/issues/91

```
tests/http/test_proxyagent.py:626: error: Statement is unreachable  [unreachable]
tests/http/test_proxyagent.py:762: error: Statement is unreachable  [unreachable]
tests/http/test_proxyagent.py:826: error: Statement is unreachable  [unreachable]
tests/http/test_proxyagent.py:838: error: Statement is unreachable  [unreachable]
tests/http/test_proxyagent.py:845: error: Statement is unreachable  [unreachable]
tests/http/federation/test_matrix_federation_agent.py:151: error: Statement is unreachable  [unreachable]
tests/http/federation/test_matrix_federation_agent.py:452: error: Statement is unreachable  [unreachable]
tests/logging/test_remote_handler.py:60: error: Statement is unreachable  [unreachable]
tests/logging/test_remote_handler.py:93: error: Statement is unreachable  [unreachable]
tests/logging/test_remote_handler.py:127: error: Statement is unreachable  [unreachable]
tests/logging/test_remote_handler.py:152: error: Statement is unreachable  [unreachable]
```

* Changelog

* Tweak DBAPI2 Protocol to be accepted by mypy 1.0

Some extra context in:
- https://github.com/matrix-org/python-canonicaljson/pull/57
- https://github.com/python/mypy/issues/6002
- https://mypy.readthedocs.io/en/latest/common_issues.html#covariant-subtyping-of-mutable-protocol-members-is-rejected

* Pull in updated canonicaljson lib

so the protocol check just works

* Improve comments in opentracing

I tried to workaround the ignores but found it too much trouble.

I think the corresponding issue is
https://github.com/python/mypy/issues/12909. The mypy repo has a PR
claiming to fix this (https://github.com/python/mypy/pull/14677) which
might mean this gets resolved soon?

* Better annotation for INTERACTIVE_AUTH_CHECKERS

* Drive-by AUTH_TYPE annotation, to remove an ignore
2023-02-16 16:09:11 +00:00

179 lines
6.2 KiB
Python

# Copyright 2019 The Matrix.org Foundation C.I.C.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import Tuple
from twisted.internet.protocol import Protocol
from twisted.test.proto_helpers import AccumulatingProtocol, MemoryReactorClock
from synapse.logging import RemoteHandler
from tests.logging import LoggerCleanupMixin
from tests.server import FakeTransport, get_clock
from tests.unittest import TestCase
from tests.utils import checked_cast
def connect_logging_client(
reactor: MemoryReactorClock, client_id: int
) -> Tuple[Protocol, AccumulatingProtocol]:
# This is essentially tests.server.connect_client, but disabling autoflush on
# the client transport. This is necessary to avoid an infinite loop due to
# sending of data via the logging transport causing additional logs to be
# written.
factory = reactor.tcpClients.pop(client_id)[2]
client = factory.buildProtocol(None)
server = AccumulatingProtocol()
server.makeConnection(FakeTransport(client, reactor))
client.makeConnection(FakeTransport(server, reactor, autoflush=False))
return client, server
class RemoteHandlerTestCase(LoggerCleanupMixin, TestCase):
def setUp(self) -> None:
self.reactor, _ = get_clock()
def test_log_output(self) -> None:
"""
The remote handler delivers logs over TCP.
"""
handler = RemoteHandler("127.0.0.1", 9000, _reactor=self.reactor)
logger = self.get_logger(handler)
logger.info("Hello there, %s!", "wally")
# Trigger the connection
client, server = connect_logging_client(self.reactor, 0)
# Trigger data being sent
client_transport = checked_cast(FakeTransport, client.transport)
client_transport.flush()
# One log message, with a single trailing newline
logs = server.data.decode("utf8").splitlines()
self.assertEqual(len(logs), 1)
self.assertEqual(server.data.count(b"\n"), 1)
# Ensure the data passed through properly.
self.assertEqual(logs[0], "Hello there, wally!")
def test_log_backpressure_debug(self) -> None:
"""
When backpressure is hit, DEBUG logs will be shed.
"""
handler = RemoteHandler(
"127.0.0.1", 9000, maximum_buffer=10, _reactor=self.reactor
)
logger = self.get_logger(handler)
# Send some debug messages
for i in range(0, 3):
logger.debug("debug %s" % (i,))
# Send a bunch of useful messages
for i in range(0, 7):
logger.info("info %s" % (i,))
# The last debug message pushes it past the maximum buffer
logger.debug("too much debug")
# Allow the reconnection
client, server = connect_logging_client(self.reactor, 0)
client_transport = checked_cast(FakeTransport, client.transport)
client_transport.flush()
# Only the 7 infos made it through, the debugs were elided
logs = server.data.splitlines()
self.assertEqual(len(logs), 7)
self.assertNotIn(b"debug", server.data)
def test_log_backpressure_info(self) -> None:
"""
When backpressure is hit, DEBUG and INFO logs will be shed.
"""
handler = RemoteHandler(
"127.0.0.1", 9000, maximum_buffer=10, _reactor=self.reactor
)
logger = self.get_logger(handler)
# Send some debug messages
for i in range(0, 3):
logger.debug("debug %s" % (i,))
# Send a bunch of useful messages
for i in range(0, 10):
logger.warning("warn %s" % (i,))
# Send a bunch of info messages
for i in range(0, 3):
logger.info("info %s" % (i,))
# The last debug message pushes it past the maximum buffer
logger.debug("too much debug")
# Allow the reconnection
client, server = connect_logging_client(self.reactor, 0)
client_transport = checked_cast(FakeTransport, client.transport)
client_transport.flush()
# The 10 warnings made it through, the debugs and infos were elided
logs = server.data.splitlines()
self.assertEqual(len(logs), 10)
self.assertNotIn(b"debug", server.data)
self.assertNotIn(b"info", server.data)
def test_log_backpressure_cut_middle(self) -> None:
"""
When backpressure is hit, and no more DEBUG and INFOs cannot be culled,
it will cut the middle messages out.
"""
handler = RemoteHandler(
"127.0.0.1", 9000, maximum_buffer=10, _reactor=self.reactor
)
logger = self.get_logger(handler)
# Send a bunch of useful messages
for i in range(0, 20):
logger.warning("warn %s" % (i,))
# Allow the reconnection
client, server = connect_logging_client(self.reactor, 0)
client_transport = checked_cast(FakeTransport, client.transport)
client_transport.flush()
# The first five and last five warnings made it through, the debugs and
# infos were elided
logs = server.data.decode("utf8").splitlines()
self.assertEqual(
["warn %s" % (i,) for i in range(5)]
+ ["warn %s" % (i,) for i in range(15, 20)],
logs,
)
def test_cancel_connection(self) -> None:
"""
Gracefully handle the connection being cancelled.
"""
handler = RemoteHandler(
"127.0.0.1", 9000, maximum_buffer=10, _reactor=self.reactor
)
logger = self.get_logger(handler)
# Send a message.
logger.info("Hello there, %s!", "wally")
# Do not accept the connection and shutdown. This causes the pending
# connection to be cancelled (and should not raise any exceptions).
handler.close()