241 lines
7.4 KiB
Python
241 lines
7.4 KiB
Python
#!/usr/bin/env python
|
|
# Copyright 2016 - Brocade Communications Systems, Inc.
|
|
# Copyright 2018 - Extreme Networks, Inc.
|
|
#
|
|
# 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 ../mistral/__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, 'mistral', '__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 mistral.api import service as api_service
|
|
from mistral import config
|
|
from mistral.engine import engine_server
|
|
from mistral.event_engine import event_engine_server
|
|
from mistral.executors import executor_server
|
|
from mistral.notifiers import notification_server
|
|
from mistral.rpc import base as rpc
|
|
from mistral import version
|
|
|
|
|
|
CONF = cfg.CONF
|
|
SERVER_THREAD_MANAGER = None
|
|
SERVER_PROCESS_MANAGER = None
|
|
|
|
|
|
def launch_thread(server, workers=1):
|
|
try:
|
|
global SERVER_THREAD_MANAGER
|
|
|
|
if not SERVER_THREAD_MANAGER:
|
|
SERVER_THREAD_MANAGER = service.ServiceLauncher(CONF)
|
|
|
|
SERVER_THREAD_MANAGER.launch_service(server, workers=workers)
|
|
except Exception as e:
|
|
sys.stderr.write("ERROR: %s\n" % e)
|
|
sys.exit(1)
|
|
|
|
|
|
def launch_process(server, workers=1):
|
|
try:
|
|
global SERVER_PROCESS_MANAGER
|
|
|
|
if not SERVER_PROCESS_MANAGER:
|
|
SERVER_PROCESS_MANAGER = service.ProcessLauncher(CONF)
|
|
|
|
SERVER_PROCESS_MANAGER.launch_service(server, workers=workers)
|
|
except Exception as e:
|
|
sys.stderr.write("ERROR: %s\n" % e)
|
|
sys.exit(1)
|
|
|
|
|
|
def launch_executor():
|
|
launch_thread(executor_server.get_oslo_service())
|
|
|
|
|
|
def launch_engine():
|
|
launch_thread(engine_server.get_oslo_service())
|
|
|
|
|
|
def launch_event_engine():
|
|
launch_thread(event_engine_server.get_oslo_service())
|
|
|
|
|
|
def launch_notifier():
|
|
launch_thread(notification_server.get_oslo_service())
|
|
|
|
|
|
def launch_api():
|
|
server = api_service.WSGIService('mistral_api')
|
|
launch_process(server, workers=server.workers)
|
|
|
|
|
|
def launch_any(options):
|
|
for option in options:
|
|
LAUNCH_OPTIONS[option]()
|
|
|
|
global SERVER_PROCESS_MANAGER
|
|
global SERVER_THREAD_MANAGER
|
|
|
|
if SERVER_PROCESS_MANAGER:
|
|
SERVER_PROCESS_MANAGER.wait()
|
|
|
|
if SERVER_THREAD_MANAGER:
|
|
SERVER_THREAD_MANAGER.wait()
|
|
|
|
|
|
# Map cli options to appropriate functions. The cli options are
|
|
# registered in mistral's config.py.
|
|
LAUNCH_OPTIONS = {
|
|
'api': launch_api,
|
|
'engine': launch_engine,
|
|
'executor': launch_executor,
|
|
'event-engine': launch_event_engine,
|
|
'notifier': launch_notifier
|
|
}
|
|
|
|
|
|
MISTRAL_TITLE = """
|
|
|\\\ //| || ||
|
|
||\\\ //|| __ || __ __ ||
|
|
|| \\\// || || // |||||| || \\\ // \\\ ||
|
|
|| \\/ || \\\ || || || \\\ ||
|
|
|| || || \\\ || || || /\\\ ||
|
|
|| || || __// ||_// || \\\__// \\\_ ||
|
|
|
|
Mistral Workflow Service, version %s
|
|
""" % version.version_string()
|
|
|
|
|
|
def print_server_info():
|
|
print(MISTRAL_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, 'Mistral')
|
|
|
|
# Please refer to the oslo.messaging documentation for transport
|
|
# configuration. The default transport for oslo.messaging is
|
|
# rabbitMQ. The available transport drivers are listed in the
|
|
# setup.cfg file in oslo.messaging under the entry_points section for
|
|
# oslo.messaging.drivers. The transport driver is specified using the
|
|
# rpc_backend option in the default section of the oslo configuration
|
|
# file. The expected value for the rpc_backend is one of the key
|
|
# values available for the oslo.messaging.drivers (i.e. rabbit, fake).
|
|
# There are additional options such as ssl and credential that can be
|
|
# specified depending on the driver. Please refer to the driver
|
|
# implementation for those additional options. It's important to note
|
|
# that the "fake" transport should only be used if "all" the Mistral
|
|
# servers are launched on the same process. Otherwise, messages do not
|
|
# get delivered if the Mistral servers are launched on different
|
|
# processes because the "fake" transport is using an in process queue.
|
|
rpc.get_transport()
|
|
|
|
if cfg.CONF.server == ['all']:
|
|
# Launch all servers.
|
|
launch_any(LAUNCH_OPTIONS.keys())
|
|
else:
|
|
# Validate launch option.
|
|
if set(cfg.CONF.server) - set(LAUNCH_OPTIONS.keys()):
|
|
raise Exception('Valid options are all or any combination of '
|
|
', '.join(LAUNCH_OPTIONS.keys()))
|
|
|
|
# Launch distinct set of server(s).
|
|
launch_any(set(cfg.CONF.server))
|
|
|
|
except RuntimeError as excp:
|
|
sys.stderr.write("ERROR: %s\n" % excp)
|
|
sys.exit(1)
|
|
|
|
|
|
# Helper method used in unit tests to reset the service launchers.
|
|
def reset_server_managers():
|
|
global SERVER_THREAD_MANAGER
|
|
global SERVER_PROCESS_MANAGER
|
|
SERVER_THREAD_MANAGER = None
|
|
SERVER_PROCESS_MANAGER = None
|
|
|
|
|
|
# Helper method used in unit tests to access the service launcher.
|
|
def get_server_thread_manager():
|
|
global SERVER_THREAD_MANAGER
|
|
return SERVER_THREAD_MANAGER
|
|
|
|
|
|
# Helper method used in unit tests to access the process launcher.
|
|
def get_server_process_manager():
|
|
global SERVER_PROCESS_MANAGER
|
|
return SERVER_PROCESS_MANAGER
|
|
|
|
|
|
if __name__ == '__main__':
|
|
sys.exit(main())
|