RETIRED, Function as a Service for OpenStack
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qinling/qinling/cmd/launch.py

159 lines
4.9 KiB

# Copyright 2017 - Catalyst IT Limited
#
# 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
import eventlet
eventlet.monkey_patch(
os=True,
select=True,
socket=True,
thread=False if '--use-debugger' in sys.argv else True,
time=True)
import os
# If ../qinling/__init__.py exists, add ../ to Python search path, so that
# it will override what happens to be installed in /usr/(local/)lib/python...
POSSIBLE_TOPDIR = os.path.normpath(os.path.join(os.path.abspath(sys.argv[0]),
os.pardir,
os.pardir))
if os.path.exists(os.path.join(POSSIBLE_TOPDIR, 'qinling', '__init__.py')):
sys.path.insert(0, POSSIBLE_TOPDIR)
from oslo_config import cfg
from oslo_log import log as logging
from oslo_service import service
from qinling.api import service as api_service
from qinling import config
from qinling.engine import service as eng_service
from qinling import rpc
from qinling import version
CONF = cfg.CONF
def launch_api():
server = api_service.WSGIService('qinling_api')
launcher = service.launch(CONF, server, workers=server.workers)
launcher.wait()
def launch_engine():
try:
server = eng_service.EngineService()
launcher = service.launch(CONF, server)
launcher.wait()
except RuntimeError as e:
sys.stderr.write("ERROR: %s\n" % e)
sys.exit(1)
def launch_any(options):
# Launch the servers on different threads.
threads = [eventlet.spawn(LAUNCH_OPTIONS[option])
for option in options]
[thread.wait() for thread in threads]
LAUNCH_OPTIONS = {
'api': launch_api,
'engine': launch_engine
}
QINLING_TITLE = r"""
/^L_ ,."\
/~\ __ /~ \ ./ \
/ _\ _/ \ /T~\|~\_\ / \_ /~| _^
/ \ /W \ / V^\/X /~ T . \/ \ ,v-./
,'`-. /~ ^ H , . \/ ; . \ `. \-' /
M ~ | . ; / , _ : . ~\_,-'
/ ~ . \ / : ' \ ,/`
I o. ^ oP '98b - _ 9.` `\9b.
8oO888. oO888P d888b9bo. .8o 888o. 8bo. o 988o.
88888888888888888888888888bo.98888888bo. 98888bo. .d888P
88888888888888888888888888888888888888888888888888888888888
_ __ _
___ _ (_) ___ / / (_) ___ ___ _
/ _ `/ / / / _ \ / / / / / _ \ / _ `/
\_, / /_/ /_//_//_/ /_/ /_//_/ \_, /
/_/ /___/
Function as a Service in OpenStack, version: %s
""" % version.version_string()
def print_server_info():
print(QINLING_TITLE)
comp_str = ("[%s]" % ','.join(LAUNCH_OPTIONS)
if cfg.CONF.server == ['all'] else cfg.CONF.server)
print('Launching server components %s...' % comp_str)
def get_properly_ordered_parameters():
"""Orders launch parameters in the right order.
In oslo it's important the order of the launch parameters.
if --config-file came after the command line parameters the command
line parameters are ignored.
So to make user command line parameters are never ignored this method
moves --config-file to be always first.
"""
args = sys.argv[1:]
for arg in sys.argv[1:]:
if arg == '--config-file' or arg.startswith('--config-file='):
if "=" in arg:
conf_file_value = arg.split("=", 1)[1]
else:
conf_file_value = args[args.index(arg) + 1]
args.remove(conf_file_value)
args.remove(arg)
args.insert(0, "--config-file")
args.insert(1, conf_file_value)
return args
def main():
try:
config.parse_args(get_properly_ordered_parameters())
print_server_info()
logging.setup(CONF, 'Qinling')
# Initialize RPC configuration.
rpc.get_transport()
if cfg.CONF.server == ['all']:
launch_any(LAUNCH_OPTIONS.keys())
else:
if set(cfg.CONF.server) - set(LAUNCH_OPTIONS.keys()):
raise Exception('Valid options are all or any combination of '
', '.join(LAUNCH_OPTIONS.keys()))
launch_any(set(cfg.CONF.server))
except RuntimeError as excp:
sys.stderr.write("ERROR: %s\n" % excp)
sys.exit(1)
if __name__ == '__main__':
sys.exit(main())