forked-synapse/synapse/config/__main__.py
Jason Robinson b9ce53e878
Fix synapse.config module "read" command (#11145)
`synapse.config.__main__` has the possibility to read a config item. This can be used to conveniently also validate the config is valid before trying to start Synapse.

 The "read" command broke in https://github.com/matrix-org/synapse/pull/10916 as it now requires passing in "server.server_name" for example.

 Also made the read command optional so one can just call this with just the confirm file reference and get a "Config parses OK" if things are ok.

Signed-off-by: Jason Robinson <jasonr@matrix.org>
Co-authored-by: Brendan Abolivier <babolivier@matrix.org>
2021-10-22 12:00:52 +02:00

56 lines
1.8 KiB
Python

# Copyright 2015, 2016 OpenMarket Ltd
# Copyright 2021 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 sys
from synapse.config._base import ConfigError
from synapse.config.homeserver import HomeServerConfig
def main(args):
action = args[1] if len(args) > 1 and args[1] == "read" else None
# If we're reading a key in the config file, then `args[1]` will be `read` and `args[2]`
# will be the key to read.
# We'll want to rework this code if we want to support more actions than just `read`.
load_config_args = args[3:] if action else args[1:]
try:
config = HomeServerConfig.load_config("", load_config_args)
except ConfigError as e:
sys.stderr.write("\n" + str(e) + "\n")
sys.exit(1)
print("Config parses OK!")
if action == "read":
key = args[2]
key_parts = key.split(".")
value = config
try:
while len(key_parts):
value = getattr(value, key_parts[0])
key_parts.pop(0)
print(f"\n{key}: {value}")
except AttributeError:
print(
f"\nNo '{key}' key could be found in the provided configuration file."
)
sys.exit(1)
if __name__ == "__main__":
main(sys.argv)