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Remove support for the legacy structured logging configuration. (#12008)

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Patrick Cloke 2022-02-17 08:32:18 -05:00 committed by GitHub
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changelog.d/12008.removal Normal file
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@ -0,0 +1 @@
Remove support for the legacy structured logging configuration (please see the the [upgrade notes](https://matrix-org.github.io/synapse/develop/upgrade#legacy-structured-logging-configuration-removal) if you are using `structured: true` in the Synapse configuration).

12
docs/structured_logging.md
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@ -81,14 +81,12 @@ remote endpoint at 10.1.2.3:9999.
## Upgrading from legacy structured logging configuration
Versions of Synapse prior to v1.23.0 included a custom structured logging
configuration which is deprecated. It used a `structured: true` flag and
configured `drains` instead of ``handlers`` and `formatters`.
Versions of Synapse prior to v1.54.0 automatically converted the legacy
structured logging configuration, which was deprecated in v1.23.0, to the standard
library logging configuration.
Synapse currently automatically converts the old configuration to the new
configuration, but this will be removed in a future version of Synapse. The
following reference can be used to update your configuration. Based on the drain
`type`, we can pick a new handler:
The following reference can be used to update your configuration. Based on the
drain `type`, we can pick a new handler:
1. For a type of `console`, `console_json`, or `console_json_terse`: a handler
with a class of `logging.StreamHandler` and a `stream` of `ext://sys.stdout`

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docs/upgrade.md
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@ -85,6 +85,15 @@ process, for example:
dpkg -i matrix-synapse-py3_1.3.0+stretch1_amd64.deb
```
# Upgrading to v1.54.0
## Legacy structured logging configuration removal
This release removes support for the `structured: true` logging configuration
which was deprecated in Synapse v1.23.0. If your logging configuration contains
`structured: true` then it should be modified based on the
[structured logging documentation](structured_logging.md).
# Upgrading to v1.53.0
## Dropping support for `webclient` listeners and non-HTTP(S) `web_client_location`

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synapse/config/logger.py
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@ -33,7 +33,6 @@ from twisted.logger import (
globalLogBeginner,
)
from synapse.logging._structured import setup_structured_logging
from synapse.logging.context import LoggingContextFilter
from synapse.logging.filter import MetadataFilter
@ -138,6 +137,12 @@ Support for the log_file configuration option and --log-file command-line option
removed in Synapse 1.3.0. You should instead set up a separate log configuration file.
"""
STRUCTURED_ERROR = """\
Support for the structured configuration option was removed in Synapse 1.54.0.
You should instead use the standard logging configuration. See
https://matrix-org.github.io/synapse/v1.54/structured_logging.html
"""
class LoggingConfig(Config):
section = "logging"
@ -292,10 +297,9 @@ def _load_logging_config(log_config_path: str) -> None:
if not log_config:
logging.warning("Loaded a blank logging config?")
# If the old structured logging configuration is being used, convert it to
# the new style configuration.
# If the old structured logging configuration is being used, raise an error.
if "structured" in log_config and log_config.get("structured"):
log_config = setup_structured_logging(log_config)
raise ConfigError(STRUCTURED_ERROR)
logging.config.dictConfig(log_config)

163
synapse/logging/_structured.py
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@ -1,163 +0,0 @@
# 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.
import os.path
from typing import Any, Dict, Generator, Optional, Tuple
from constantly import NamedConstant, Names
from synapse.config._base import ConfigError
class DrainType(Names):
CONSOLE = NamedConstant()
CONSOLE_JSON = NamedConstant()
CONSOLE_JSON_TERSE = NamedConstant()
FILE = NamedConstant()
FILE_JSON = NamedConstant()
NETWORK_JSON_TERSE = NamedConstant()
DEFAULT_LOGGERS = {"synapse": {"level": "info"}}
def parse_drain_configs(
drains: dict,
) -> Generator[Tuple[str, Dict[str, Any]], None, None]:
"""
Parse the drain configurations.
Args:
drains (dict): A list of drain configurations.
Yields:
dict instances representing a logging handler.
Raises:
ConfigError: If any of the drain configuration items are invalid.
"""
for name, config in drains.items():
if "type" not in config:
raise ConfigError("Logging drains require a 'type' key.")
try:
logging_type = DrainType.lookupByName(config["type"].upper())
except ValueError:
raise ConfigError(
"%s is not a known logging drain type." % (config["type"],)
)
# Either use the default formatter or the tersejson one.
if logging_type in (
DrainType.CONSOLE_JSON,
DrainType.FILE_JSON,
):
formatter: Optional[str] = "json"
elif logging_type in (
DrainType.CONSOLE_JSON_TERSE,
DrainType.NETWORK_JSON_TERSE,
):
formatter = "tersejson"
else:
# A formatter of None implies using the default formatter.
formatter = None
if logging_type in [
DrainType.CONSOLE,
DrainType.CONSOLE_JSON,
DrainType.CONSOLE_JSON_TERSE,
]:
location = config.get("location")
if location is None or location not in ["stdout", "stderr"]:
raise ConfigError(
(
"The %s drain needs the 'location' key set to "
"either 'stdout' or 'stderr'."
)
% (logging_type,)
)
yield name, {
"class": "logging.StreamHandler",
"formatter": formatter,
"stream": "ext://sys." + location,
}
elif logging_type in [DrainType.FILE, DrainType.FILE_JSON]:
if "location" not in config:
raise ConfigError(
"The %s drain needs the 'location' key set." % (logging_type,)
)
location = config.get("location")
if os.path.abspath(location) != location:
raise ConfigError(
"File paths need to be absolute, '%s' is a relative path"
% (location,)
)
yield name, {
"class": "logging.FileHandler",
"formatter": formatter,
"filename": location,
}
elif logging_type in [DrainType.NETWORK_JSON_TERSE]:
host = config.get("host")
port = config.get("port")
maximum_buffer = config.get("maximum_buffer", 1000)
yield name, {
"class": "synapse.logging.RemoteHandler",
"formatter": formatter,
"host": host,
"port": port,
"maximum_buffer": maximum_buffer,
}
else:
raise ConfigError(
"The %s drain type is currently not implemented."
% (config["type"].upper(),)
)
def setup_structured_logging(
log_config: dict,
) -> dict:
"""
Convert a legacy structured logging configuration (from Synapse < v1.23.0)
to one compatible with the new standard library handlers.
"""
if "drains" not in log_config:
raise ConfigError("The logging configuration requires a list of drains.")
new_config = {
"version": 1,
"formatters": {
"json": {"class": "synapse.logging.JsonFormatter"},
"tersejson": {"class": "synapse.logging.TerseJsonFormatter"},
},
"handlers": {},
"loggers": log_config.get("loggers", DEFAULT_LOGGERS),
"root": {"handlers": []},
}
for handler_name, handler in parse_drain_configs(log_config["drains"]):
new_config["handlers"][handler_name] = handler
# Add each handler to the root logger.
new_config["root"]["handlers"].append(handler_name)
return new_config