Add basic admin cmd app

This commit is contained in:
Erik Johnston 2019-07-01 17:55:26 +01:00
parent 65dd5543f6
commit 9f3c0a8556
3 changed files with 257 additions and 6 deletions

View file

@ -48,7 +48,7 @@ def register_sighup(func):
_sighup_callbacks.append(func)
def start_worker_reactor(appname, config):
def start_worker_reactor(appname, config, run_command=reactor.run):
""" Run the reactor in the main process
Daemonizes if necessary, and then configures some resources, before starting
@ -57,6 +57,7 @@ def start_worker_reactor(appname, config):
Args:
appname (str): application name which will be sent to syslog
config (synapse.config.Config): config object
run_command (Callable[]): callable that actually runs the reactor
"""
logger = logging.getLogger(config.worker_app)
@ -69,11 +70,19 @@ def start_worker_reactor(appname, config):
daemonize=config.worker_daemonize,
print_pidfile=config.print_pidfile,
logger=logger,
run_command=run_command,
)
def start_reactor(
appname, soft_file_limit, gc_thresholds, pid_file, daemonize, print_pidfile, logger
appname,
soft_file_limit,
gc_thresholds,
pid_file,
daemonize,
print_pidfile,
logger,
run_command=reactor.run,
):
""" Run the reactor in the main process
@ -88,6 +97,7 @@ def start_reactor(
daemonize (bool): true to run the reactor in a background process
print_pidfile (bool): whether to print the pid file, if daemonize is True
logger (logging.Logger): logger instance to pass to Daemonize
run_command (Callable[]): callable that actually runs the reactor
"""
install_dns_limiter(reactor)
@ -103,7 +113,8 @@ def start_reactor(
change_resource_limit(soft_file_limit)
if gc_thresholds:
gc.set_threshold(*gc_thresholds)
reactor.run()
run_command()
if daemonize:
if print_pidfile:

198
synapse/app/admin_cmd.py Normal file
View file

@ -0,0 +1,198 @@
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright 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 logging
import sys
from twisted.internet import defer, task
import synapse
from synapse.app import _base
from synapse.config._base import ConfigError
from synapse.config.homeserver import HomeServerConfig
from synapse.config.logger import setup_logging
from synapse.handlers.admin import FileExfiltrationWriter
from synapse.replication.slave.storage._base import BaseSlavedStore
from synapse.replication.slave.storage.account_data import SlavedAccountDataStore
from synapse.replication.slave.storage.appservice import SlavedApplicationServiceStore
from synapse.replication.slave.storage.client_ips import SlavedClientIpStore
from synapse.replication.slave.storage.deviceinbox import SlavedDeviceInboxStore
from synapse.replication.slave.storage.devices import SlavedDeviceStore
from synapse.replication.slave.storage.events import SlavedEventStore
from synapse.replication.slave.storage.filtering import SlavedFilteringStore
from synapse.replication.slave.storage.groups import SlavedGroupServerStore
from synapse.replication.slave.storage.presence import SlavedPresenceStore
from synapse.replication.slave.storage.push_rule import SlavedPushRuleStore
from synapse.replication.slave.storage.receipts import SlavedReceiptsStore
from synapse.replication.slave.storage.registration import SlavedRegistrationStore
from synapse.replication.slave.storage.room import RoomStore
from synapse.replication.tcp.client import ReplicationClientHandler
from synapse.server import HomeServer
from synapse.storage.engines import create_engine
from synapse.util.logcontext import LoggingContext
from synapse.util.versionstring import get_version_string
logger = logging.getLogger("synapse.app.admin_cmd")
class AdminCmdSlavedStore(
SlavedReceiptsStore,
SlavedAccountDataStore,
SlavedApplicationServiceStore,
SlavedRegistrationStore,
SlavedFilteringStore,
SlavedPresenceStore,
SlavedGroupServerStore,
SlavedDeviceInboxStore,
SlavedDeviceStore,
SlavedPushRuleStore,
SlavedEventStore,
SlavedClientIpStore,
RoomStore,
BaseSlavedStore,
):
pass
class AdminCmdServer(HomeServer):
DATASTORE_CLASS = AdminCmdSlavedStore
def _listen_http(self, listener_config):
pass
def start_listening(self, listeners):
pass
def build_tcp_replication(self):
return AdminCmdReplicationHandler(self)
class AdminCmdReplicationHandler(ReplicationClientHandler):
@defer.inlineCallbacks
def on_rdata(self, stream_name, token, rows):
pass
def get_streams_to_replicate(self):
return {}
@defer.inlineCallbacks
def export_data_command(hs, user_id, directory):
"""Export data for a user.
Args:
user_id (str)
directory (str|None): Directory to write output to. Will create a temp
directory if not specified.
"""
res = yield hs.get_handlers().admin_handler.exfiltrate_user_data(
user_id, FileExfiltrationWriter(user_id, directory=directory)
)
print(res)
def start(config_options):
parser = HomeServerConfig.create_argument_parser("Synapse Admin Command")
subparser = parser.add_subparsers(
title="Admin Commands",
description="Choose and admin command to perform.",
required=True,
dest="command",
metavar="<admin_command>",
help="The admin command to perform.",
)
export_data_parser = subparser.add_parser(
"export-data", help="Export all data for a user"
)
export_data_parser.add_argument("user_id", help="User to extra data from")
export_data_parser.add_argument(
"--output-directory",
action="store",
metavar="DIRECTORY",
required=False,
help="The directory to store the exported data in. Must be emtpy. Defaults"
" to creating a temp directory.",
)
try:
config, args = HomeServerConfig.load_config_with_parser(parser, config_options)
except ConfigError as e:
sys.stderr.write("\n" + str(e) + "\n")
sys.exit(1)
if config.worker_app is not None:
assert config.worker_app == "synapse.app.admin_cmd"
# Update the config with some basic overrides so that don't have to specify
# a full worker config.
config.worker_app = "synapse.app.admin_cmd"
if (
not config.worker_daemonize
and not config.worker_log_file
and not config.worker_log_config
):
# Since we're meant to be run as a "command" let's not redirect stdio
# unless we've actually set log config.
config.no_redirect_stdio = True
# Explicitly disable background processes
config.update_user_directory = False
config.start_pushers = False
config.send_federation = False
setup_logging(config, use_worker_options=True)
synapse.events.USE_FROZEN_DICTS = config.use_frozen_dicts
database_engine = create_engine(config.database_config)
ss = AdminCmdServer(
config.server_name,
db_config=config.database_config,
config=config,
version_string="Synapse/" + get_version_string(synapse),
database_engine=database_engine,
)
ss.setup()
if args.command == "export-data":
command = lambda: export_data_command(ss, args.user_id, args.output_directory)
else:
# This shouldn't happen.
raise ConfigError("Unknown admin command %s" % (args.command,))
# We use task.react as the basic run command as it correctly handles tearing
# down the reactor when the deferreds resolve and setting the return value.
# We also make sure that `_base.start` gets run before we actually run the
# command.
@defer.inlineCallbacks
def run(_reactor):
with LoggingContext("command"):
yield _base.start(ss, [])
yield command()
_base.start_worker_reactor(
"synapse-admin-cmd", config, run_command=lambda: task.react(run)
)
if __name__ == "__main__":
with LoggingContext("main"):
start(sys.argv[1:])

View file

@ -201,6 +201,26 @@ class Config(object):
Returns: Config object.
"""
config_parser = cls.create_argument_parser(description)
obj, _ = cls.load_config_with_parser(config_parser, argv)
return obj
@classmethod
def create_argument_parser(cls, description):
"""Create an ArgumentParser instance with all the config flags.
Doesn't support config-file-generation: used by the worker apps.
Used for workers where we want to add extra flags/subcommands.
Args:
description (str): App description
Returns:
ArgumentParser
"""
config_parser = argparse.ArgumentParser(description=description)
config_parser.add_argument(
"-c",
@ -219,9 +239,31 @@ class Config(object):
" Defaults to the directory containing the last config file",
)
obj = cls()
# We can only invoke `add_arguments` on an actual object, but
# `add_arguments` should be side effect free so this is probably fine.
cls().invoke_all("add_arguments", config_parser)
obj.invoke_all("add_arguments", config_parser)
return config_parser
@classmethod
def load_config_with_parser(cls, config_parser, argv):
"""Parse the commandline and config files with the given parser
Doesn't support config-file-generation: used by the worker apps.
Used for workers where we want to add extra flags/subcommands.
Args:
conifg_parser (ArgumentParser)
argv (list[str])
Returns:
tuple[HomeServerConfig, argparse.Namespace]: Returns the parsed
config object and the parsed argparse.Namespace object from
`config_parser.parse_args(..)`
"""
obj = cls()
config_args = config_parser.parse_args(argv)
@ -244,7 +286,7 @@ class Config(object):
obj.invoke_all("read_arguments", config_args)
return obj
return obj, config_args
@classmethod
def load_or_generate_config(cls, description, argv):