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The general idea here is that config examples should just have a hash and no extraneous whitespace, both to make it easier for people who don't understand yaml, and to make the examples stand out from the comments.
248 lines
8.0 KiB
Python
248 lines
8.0 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014-2016 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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import logging.config
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import os
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import sys
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from string import Template
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import yaml
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from twisted.logger import STDLibLogObserver, globalLogBeginner
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import synapse
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from synapse.app import _base as appbase
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from synapse.util.logcontext import LoggingContextFilter
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from synapse.util.versionstring import get_version_string
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from ._base import Config
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DEFAULT_LOG_CONFIG = Template("""
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version: 1
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formatters:
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precise:
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format: '%(asctime)s - %(name)s - %(lineno)d - %(levelname)s - \
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%(request)s - %(message)s'
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filters:
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context:
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(): synapse.util.logcontext.LoggingContextFilter
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request: ""
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handlers:
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file:
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class: logging.handlers.RotatingFileHandler
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formatter: precise
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filename: ${log_file}
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maxBytes: 104857600
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backupCount: 10
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filters: [context]
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encoding: utf8
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console:
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class: logging.StreamHandler
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formatter: precise
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filters: [context]
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loggers:
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synapse:
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level: INFO
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synapse.storage.SQL:
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# beware: increasing this to DEBUG will make synapse log sensitive
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# information such as access tokens.
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level: INFO
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root:
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level: INFO
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handlers: [file, console]
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""")
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class LoggingConfig(Config):
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def read_config(self, config):
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self.verbosity = config.get("verbose", 0)
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self.no_redirect_stdio = config.get("no_redirect_stdio", False)
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self.log_config = self.abspath(config.get("log_config"))
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self.log_file = self.abspath(config.get("log_file"))
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def default_config(self, config_dir_path, server_name, **kwargs):
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log_config = os.path.join(config_dir_path, server_name + ".log.config")
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return """
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# A yaml python logging config file
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#
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log_config: "%(log_config)s"
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""" % locals()
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def read_arguments(self, args):
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if args.verbose is not None:
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self.verbosity = args.verbose
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if args.no_redirect_stdio is not None:
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self.no_redirect_stdio = args.no_redirect_stdio
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if args.log_config is not None:
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self.log_config = args.log_config
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if args.log_file is not None:
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self.log_file = args.log_file
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def add_arguments(cls, parser):
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logging_group = parser.add_argument_group("logging")
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logging_group.add_argument(
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'-v', '--verbose', dest="verbose", action='count',
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help="The verbosity level. Specify multiple times to increase "
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"verbosity. (Ignored if --log-config is specified.)"
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)
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logging_group.add_argument(
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'-f', '--log-file', dest="log_file",
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help="File to log to. (Ignored if --log-config is specified.)"
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)
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logging_group.add_argument(
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'--log-config', dest="log_config", default=None,
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help="Python logging config file"
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)
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logging_group.add_argument(
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'-n', '--no-redirect-stdio',
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action='store_true', default=None,
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help="Do not redirect stdout/stderr to the log"
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)
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def generate_files(self, config):
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log_config = config.get("log_config")
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if log_config and not os.path.exists(log_config):
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log_file = self.abspath("homeserver.log")
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with open(log_config, "w") as log_config_file:
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log_config_file.write(
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DEFAULT_LOG_CONFIG.substitute(log_file=log_file)
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)
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def setup_logging(config, use_worker_options=False):
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""" Set up python logging
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Args:
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config (LoggingConfig | synapse.config.workers.WorkerConfig):
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configuration data
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use_worker_options (bool): True to use 'worker_log_config' and
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'worker_log_file' options instead of 'log_config' and 'log_file'.
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register_sighup (func | None): Function to call to register a
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sighup handler.
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"""
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log_config = (config.worker_log_config if use_worker_options
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else config.log_config)
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log_file = (config.worker_log_file if use_worker_options
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else config.log_file)
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log_format = (
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"%(asctime)s - %(name)s - %(lineno)d - %(levelname)s - %(request)s"
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" - %(message)s"
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)
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if log_config is None:
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# We don't have a logfile, so fall back to the 'verbosity' param from
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# the config or cmdline. (Note that we generate a log config for new
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# installs, so this will be an unusual case)
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level = logging.INFO
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level_for_storage = logging.INFO
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if config.verbosity:
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level = logging.DEBUG
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if config.verbosity > 1:
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level_for_storage = logging.DEBUG
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logger = logging.getLogger('')
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logger.setLevel(level)
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logging.getLogger('synapse.storage.SQL').setLevel(level_for_storage)
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formatter = logging.Formatter(log_format)
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if log_file:
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# TODO: Customisable file size / backup count
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handler = logging.handlers.RotatingFileHandler(
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log_file, maxBytes=(1000 * 1000 * 100), backupCount=3,
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encoding='utf8'
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)
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def sighup(signum, stack):
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logger.info("Closing log file due to SIGHUP")
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handler.doRollover()
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logger.info("Opened new log file due to SIGHUP")
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else:
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handler = logging.StreamHandler()
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def sighup(*args):
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pass
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handler.setFormatter(formatter)
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handler.addFilter(LoggingContextFilter(request=""))
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logger.addHandler(handler)
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else:
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def load_log_config():
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with open(log_config, 'r') as f:
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logging.config.dictConfig(yaml.load(f))
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def sighup(*args):
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# it might be better to use a file watcher or something for this.
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load_log_config()
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logging.info("Reloaded log config from %s due to SIGHUP", log_config)
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load_log_config()
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appbase.register_sighup(sighup)
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# make sure that the first thing we log is a thing we can grep backwards
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# for
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logging.warn("***** STARTING SERVER *****")
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logging.warn(
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"Server %s version %s",
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sys.argv[0], get_version_string(synapse),
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)
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logging.info("Server hostname: %s", config.server_name)
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# It's critical to point twisted's internal logging somewhere, otherwise it
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# stacks up and leaks kup to 64K object;
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# see: https://twistedmatrix.com/trac/ticket/8164
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#
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# Routing to the python logging framework could be a performance problem if
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# the handlers blocked for a long time as python.logging is a blocking API
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# see https://twistedmatrix.com/documents/current/core/howto/logger.html
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# filed as https://github.com/matrix-org/synapse/issues/1727
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#
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# However this may not be too much of a problem if we are just writing to a file.
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observer = STDLibLogObserver()
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def _log(event):
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if "log_text" in event:
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if event["log_text"].startswith("DNSDatagramProtocol starting on "):
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return
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if event["log_text"].startswith("(UDP Port "):
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return
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if event["log_text"].startswith("Timing out client"):
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return
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return observer(event)
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globalLogBeginner.beginLoggingTo(
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[_log],
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redirectStandardIO=not config.no_redirect_stdio,
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)
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if not config.no_redirect_stdio:
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print("Redirected stdout/stderr to logs")
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