From b64b6d12d47c012a9996a2585a969d3b962d25fa Mon Sep 17 00:00:00 2001 From: Patrick Cloke Date: Fri, 12 Nov 2021 08:43:06 -0500 Subject: [PATCH] Add more type hints to synapse.util. (#11321) --- changelog.d/11321.misc | 1 + synapse/http/server.py | 6 +++--- synapse/util/__init__.py | 32 ++++++++++++++++++++------------ 3 files changed, 24 insertions(+), 15 deletions(-) create mode 100644 changelog.d/11321.misc diff --git a/changelog.d/11321.misc b/changelog.d/11321.misc new file mode 100644 index 0000000000..7c377813e8 --- /dev/null +++ b/changelog.d/11321.misc @@ -0,0 +1 @@ +Add type hints to `synapse.util`. diff --git a/synapse/http/server.py b/synapse/http/server.py index 1af0d9a31d..91badb0b0a 100644 --- a/synapse/http/server.py +++ b/synapse/http/server.py @@ -98,7 +98,7 @@ def return_json_error(f: failure.Failure, request: SynapseRequest) -> None: "Failed handle request via %r: %r", request.request_metrics.name, request, - exc_info=(f.type, f.value, f.getTracebackObject()), # type: ignore + exc_info=(f.type, f.value, f.getTracebackObject()), # type: ignore[arg-type] ) # Only respond with an error response if we haven't already started writing, @@ -150,7 +150,7 @@ def return_html_error( logger.error( "Failed handle request %r", request, - exc_info=(f.type, f.value, f.getTracebackObject()), # type: ignore + exc_info=(f.type, f.value, f.getTracebackObject()), # type: ignore[arg-type] ) else: code = HTTPStatus.INTERNAL_SERVER_ERROR @@ -159,7 +159,7 @@ def return_html_error( logger.error( "Failed handle request %r", request, - exc_info=(f.type, f.value, f.getTracebackObject()), # type: ignore + exc_info=(f.type, f.value, f.getTracebackObject()), # type: ignore[arg-type] ) if isinstance(error_template, str): diff --git a/synapse/util/__init__.py b/synapse/util/__init__.py index abf53d149d..95f23e27b6 100644 --- a/synapse/util/__init__.py +++ b/synapse/util/__init__.py @@ -16,7 +16,7 @@ import json import logging import re import typing -from typing import Any, Callable, Dict, Generator, Pattern +from typing import Any, Callable, Dict, Generator, Optional, Pattern import attr from frozendict import frozendict @@ -110,7 +110,9 @@ class Clock: """Returns the current system time in milliseconds since epoch.""" return int(self.time() * 1000) - def looping_call(self, f: Callable, msec: float, *args, **kwargs) -> LoopingCall: + def looping_call( + self, f: Callable, msec: float, *args: Any, **kwargs: Any + ) -> LoopingCall: """Call a function repeatedly. Waits `msec` initially before calling `f` for the first time. @@ -130,20 +132,22 @@ class Clock: d.addErrback(log_failure, "Looping call died", consumeErrors=False) return call - def call_later(self, delay, callback, *args, **kwargs) -> IDelayedCall: + def call_later( + self, delay: float, callback: Callable, *args: Any, **kwargs: Any + ) -> IDelayedCall: """Call something later Note that the function will be called with no logcontext, so if it is anything other than trivial, you probably want to wrap it in run_as_background_process. Args: - delay(float): How long to wait in seconds. - callback(function): Function to call + delay: How long to wait in seconds. + callback: Function to call *args: Postional arguments to pass to function. **kwargs: Key arguments to pass to function. """ - def wrapped_callback(*args, **kwargs): + def wrapped_callback(*args: Any, **kwargs: Any) -> None: with context.PreserveLoggingContext(): callback(*args, **kwargs) @@ -158,25 +162,29 @@ class Clock: raise -def log_failure(failure, msg, consumeErrors=True): +def log_failure( + failure: Failure, msg: str, consumeErrors: bool = True +) -> Optional[Failure]: """Creates a function suitable for passing to `Deferred.addErrback` that logs any failures that occur. Args: - msg (str): Message to log - consumeErrors (bool): If true consumes the failure, otherwise passes - on down the callback chain + failure: The Failure to log + msg: Message to log + consumeErrors: If true consumes the failure, otherwise passes on down + the callback chain Returns: - func(Failure) + The Failure if consumeErrors is false. None, otherwise. """ logger.error( - msg, exc_info=(failure.type, failure.value, failure.getTracebackObject()) + msg, exc_info=(failure.type, failure.value, failure.getTracebackObject()) # type: ignore[arg-type] ) if not consumeErrors: return failure + return None def glob_to_regex(glob: str, word_boundary: bool = False) -> Pattern: