Files
mopidy-radionet/venv/lib/python3.7/site-packages/mopidy/__main__.py
2020-01-18 20:01:00 +01:00

232 lines
7.7 KiB
Python

import logging
import signal
import sys
import pykka.debug
from mopidy import commands
from mopidy import config as config_lib
from mopidy import ext
from mopidy.internal import log, path, process, versioning
from mopidy.internal.gi import Gst # noqa: F401
try:
# Make GLib's mainloop the event loop for python-dbus
import dbus.mainloop.glib
dbus.mainloop.glib.threads_init()
dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
except ImportError:
pass
logger = logging.getLogger(__name__)
def main():
log.bootstrap_delayed_logging()
logger.info(f"Starting Mopidy {versioning.get_version()}")
signal.signal(signal.SIGTERM, process.sigterm_handler)
# Windows does not have signal.SIGUSR1
if hasattr(signal, "SIGUSR1"):
signal.signal(signal.SIGUSR1, pykka.debug.log_thread_tracebacks)
try:
registry = ext.Registry()
root_cmd = commands.RootCommand()
config_cmd = commands.ConfigCommand()
deps_cmd = commands.DepsCommand()
root_cmd.set(extension=None, registry=registry)
root_cmd.add_child("config", config_cmd)
root_cmd.add_child("deps", deps_cmd)
extensions_data = ext.load_extensions()
for data in extensions_data:
if data.command: # TODO: check isinstance?
data.command.set(extension=data.extension)
root_cmd.add_child(data.extension.ext_name, data.command)
args = root_cmd.parse(sys.argv[1:])
config, config_errors = config_lib.load(
args.config_files,
[d.config_schema for d in extensions_data],
[d.config_defaults for d in extensions_data],
args.config_overrides,
)
create_core_dirs(config)
create_initial_config_file(args, extensions_data)
log.setup_logging(
config, args.base_verbosity_level, args.verbosity_level
)
extensions = {
"validate": [],
"config": [],
"disabled": [],
"enabled": [],
}
for data in extensions_data:
extension = data.extension
# TODO: factor out all of this to a helper that can be tested
if not ext.validate_extension_data(data):
config[extension.ext_name] = {"enabled": False}
config_errors[extension.ext_name] = {
"enabled": "extension disabled by self check."
}
extensions["validate"].append(extension)
elif not config[extension.ext_name]["enabled"]:
config[extension.ext_name] = {"enabled": False}
config_errors[extension.ext_name] = {
"enabled": "extension disabled by user config."
}
extensions["disabled"].append(extension)
elif config_errors.get(extension.ext_name):
config[extension.ext_name]["enabled"] = False
config_errors[extension.ext_name][
"enabled"
] = "extension disabled due to config errors."
extensions["config"].append(extension)
else:
extensions["enabled"].append(extension)
log_extension_info(
[d.extension for d in extensions_data], extensions["enabled"]
)
# Config and deps commands are simply special cased for now.
if args.command == config_cmd:
schemas = [d.config_schema for d in extensions_data]
return args.command.run(config, config_errors, schemas)
elif args.command == deps_cmd:
return args.command.run()
check_config_errors(config, config_errors, extensions)
if not extensions["enabled"]:
logger.error("No extension enabled, exiting...")
sys.exit(1)
# Read-only config from here on, please.
proxied_config = config_lib.Proxy(config)
if args.extension and args.extension not in extensions["enabled"]:
logger.error(
"Unable to run command provided by disabled extension %s",
args.extension.ext_name,
)
return 1
for extension in extensions["enabled"]:
try:
extension.setup(registry)
except Exception:
# TODO: would be nice a transactional registry. But sadly this
# is a bit tricky since our current API is giving out a mutable
# list. We might however be able to replace this with a
# collections.Sequence to provide a RO view.
logger.exception(
f"Extension {extension.ext_name} failed during setup. "
f"This might have left the registry in a bad state."
)
# Anything that wants to exit after this point must use
# mopidy.internal.process.exit_process as actors can have been started.
try:
return args.command.run(args, proxied_config)
except NotImplementedError:
print(root_cmd.format_help())
return 1
except KeyboardInterrupt:
pass
except Exception as ex:
logger.exception(ex)
raise
def create_core_dirs(config):
path.get_or_create_dir(config["core"]["cache_dir"])
path.get_or_create_dir(config["core"]["config_dir"])
path.get_or_create_dir(config["core"]["data_dir"])
def create_initial_config_file(args, extensions_data):
"""Initialize whatever the last config file is with defaults"""
config_file = path.expand_path(args.config_files[-1])
if config_file.exists():
return
try:
default = config_lib.format_initial(extensions_data)
path.get_or_create_file(
config_file,
mkdir=False,
content=default.encode(errors="surrogateescape"),
)
logger.info(f"Initialized {config_file.as_uri()} with default config")
except OSError as exc:
logger.warning(
f"Unable to initialize {config_file.as_uri()} with default config: {exc}"
)
def log_extension_info(all_extensions, enabled_extensions):
# TODO: distinguish disabled vs blocked by env?
enabled_names = {e.ext_name for e in enabled_extensions}
disabled_names = {e.ext_name for e in all_extensions} - enabled_names
logger.info("Enabled extensions: %s", ", ".join(enabled_names) or "none")
logger.info("Disabled extensions: %s", ", ".join(disabled_names) or "none")
def check_config_errors(config, errors, extensions):
fatal_errors = []
extension_names = {}
all_extension_names = set()
for state in extensions:
extension_names[state] = {e.ext_name for e in extensions[state]}
all_extension_names.update(extension_names[state])
for section in sorted(errors):
if not errors[section]:
continue
if section not in all_extension_names:
logger.warning(f"Found fatal {section} configuration errors:")
fatal_errors.append(section)
elif section in extension_names["config"]:
del errors[section]["enabled"]
logger.warning(
f"Found {section} configuration errors. "
f"The extension has been automatically disabled:"
)
else:
continue
for field, msg in errors[section].items():
logger.warning(f" {section}/{field} {msg}")
if extensions["config"]:
logger.warning(
"Please fix the extension configuration errors or "
"disable the extensions to silence these messages."
)
if fatal_errors:
logger.error("Please fix fatal configuration errors, exiting...")
sys.exit(1)
if __name__ == "__main__":
sys.exit(main())