mirror of
https://mau.dev/maunium/synapse.git
synced 2024-08-27 12:42:39 +00:00
![Patrick Cloke](/assets/img/avatar_default.png)
By importing from canonicaljson the simplejson module was still being used in some situations. After this change the std lib json is consistenty used throughout Synapse.
166 lines
4.9 KiB
Python
166 lines
4.9 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2014-2016 OpenMarket Ltd
|
|
#
|
|
# 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.
|
|
|
|
import json
|
|
import logging
|
|
import re
|
|
|
|
import attr
|
|
|
|
from twisted.internet import defer, task
|
|
|
|
from synapse.logging import context
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
def _reject_invalid_json(val):
|
|
"""Do not allow Infinity, -Infinity, or NaN values in JSON."""
|
|
raise json.JSONDecodeError("Invalid JSON value: '%s'" % val)
|
|
|
|
|
|
# Create a custom encoder to reduce the whitespace produced by JSON encoding and
|
|
# ensure that valid JSON is produced.
|
|
json_encoder = json.JSONEncoder(allow_nan=False, separators=(",", ":"))
|
|
|
|
# Create a custom decoder to reject Python extensions to JSON.
|
|
json_decoder = json.JSONDecoder(parse_constant=_reject_invalid_json)
|
|
|
|
|
|
def unwrapFirstError(failure):
|
|
# defer.gatherResults and DeferredLists wrap failures.
|
|
failure.trap(defer.FirstError)
|
|
return failure.value.subFailure
|
|
|
|
|
|
@attr.s
|
|
class Clock:
|
|
"""
|
|
A Clock wraps a Twisted reactor and provides utilities on top of it.
|
|
|
|
Args:
|
|
reactor: The Twisted reactor to use.
|
|
"""
|
|
|
|
_reactor = attr.ib()
|
|
|
|
@defer.inlineCallbacks
|
|
def sleep(self, seconds):
|
|
d = defer.Deferred()
|
|
with context.PreserveLoggingContext():
|
|
self._reactor.callLater(seconds, d.callback, seconds)
|
|
res = yield d
|
|
return res
|
|
|
|
def time(self):
|
|
"""Returns the current system time in seconds since epoch."""
|
|
return self._reactor.seconds()
|
|
|
|
def time_msec(self):
|
|
"""Returns the current system time in milliseconds since epoch."""
|
|
return int(self.time() * 1000)
|
|
|
|
def looping_call(self, f, msec, *args, **kwargs):
|
|
"""Call a function repeatedly.
|
|
|
|
Waits `msec` initially before calling `f` for the first time.
|
|
|
|
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:
|
|
f(function): The function to call repeatedly.
|
|
msec(float): How long to wait between calls in milliseconds.
|
|
*args: Postional arguments to pass to function.
|
|
**kwargs: Key arguments to pass to function.
|
|
"""
|
|
call = task.LoopingCall(f, *args, **kwargs)
|
|
call.clock = self._reactor
|
|
d = call.start(msec / 1000.0, now=False)
|
|
d.addErrback(log_failure, "Looping call died", consumeErrors=False)
|
|
return call
|
|
|
|
def call_later(self, delay, callback, *args, **kwargs):
|
|
"""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
|
|
*args: Postional arguments to pass to function.
|
|
**kwargs: Key arguments to pass to function.
|
|
"""
|
|
|
|
def wrapped_callback(*args, **kwargs):
|
|
with context.PreserveLoggingContext():
|
|
callback(*args, **kwargs)
|
|
|
|
with context.PreserveLoggingContext():
|
|
return self._reactor.callLater(delay, wrapped_callback, *args, **kwargs)
|
|
|
|
def cancel_call_later(self, timer, ignore_errs=False):
|
|
try:
|
|
timer.cancel()
|
|
except Exception:
|
|
if not ignore_errs:
|
|
raise
|
|
|
|
|
|
def log_failure(failure, msg, consumeErrors=True):
|
|
"""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
|
|
|
|
Returns:
|
|
func(Failure)
|
|
"""
|
|
|
|
logger.error(
|
|
msg, exc_info=(failure.type, failure.value, failure.getTracebackObject())
|
|
)
|
|
|
|
if not consumeErrors:
|
|
return failure
|
|
|
|
|
|
def glob_to_regex(glob):
|
|
"""Converts a glob to a compiled regex object.
|
|
|
|
The regex is anchored at the beginning and end of the string.
|
|
|
|
Args:
|
|
glob (str)
|
|
|
|
Returns:
|
|
re.RegexObject
|
|
"""
|
|
res = ""
|
|
for c in glob:
|
|
if c == "*":
|
|
res = res + ".*"
|
|
elif c == "?":
|
|
res = res + "."
|
|
else:
|
|
res = res + re.escape(c)
|
|
|
|
# \A anchors at start of string, \Z at end of string
|
|
return re.compile(r"\A" + res + r"\Z", re.IGNORECASE)
|