MatrixSynapse/tests/test_utils/logging_setup.py

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# Copyright 2019 New Vector 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 logging
import os
import twisted.logger
from synapse.logging.context import LoggingContextFilter
from synapse.synapse_rust import reset_logging_config
class ToTwistedHandler(logging.Handler):
"""logging handler which sends the logs to the twisted log"""
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tx_log = twisted.logger.Logger()
def emit(self, record: logging.LogRecord) -> None:
log_entry = self.format(record)
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log_level = record.levelname.lower().replace("warning", "warn")
self.tx_log.emit(
twisted.logger.LogLevel.levelWithName(log_level), "{entry}", entry=log_entry
)
def setup_logging() -> None:
"""Configure the python logging appropriately for the tests.
(Logs will end up in _trial_temp.)
"""
root_logger = logging.getLogger()
# We exclude `%(asctime)s` from this format because the Twisted logger adds its own
# timestamp
log_format = "%(name)s - %(lineno)d - " "%(levelname)s - %(request)s - %(message)s"
handler = ToTwistedHandler()
formatter = logging.Formatter(log_format)
handler.setFormatter(formatter)
handler.addFilter(LoggingContextFilter())
root_logger.addHandler(handler)
log_level = os.environ.get("SYNAPSE_TEST_LOG_LEVEL", "ERROR")
root_logger.setLevel(log_level)
# In order to not add noise by default (since we only log ERROR messages for trial
# tests as configured above), we only enable this for developers for looking for
# more INFO or DEBUG.
if root_logger.isEnabledFor(logging.INFO):
# Log when events are (maybe unexpectedly) filtered out of responses in tests. It's
# just nice to be able to look at the CI log and figure out why an event isn't being
# returned.
logging.getLogger("synapse.visibility.filtered_event_debug").setLevel(
logging.DEBUG
)
# Blow away the pyo3-log cache so that it reloads the configuration.
reset_logging_config()