deb-mistral/mistral/api/service.py
Renat Akhmerov a5d284aa4f Fix launch process of Mistral components
* Fixed the bug #1622534
* Introduced MistralService class extending oslo.service.Service
  that all Mistral components running standalone should extend
* Refactored engine, executor and event engine with MistralService
* Moved most of the startup logic from launch.cmd to individual
  corresponding components
* Cluster membership is now under control of MistralService
* Fixed test_join.test_full_join_with_conditions() which previously
  had a bug and we were just 'lucky' that it passed due to a
  different work of scheduler
* Fixed a number of test cases
* Other minor changes

TODO:
* We now use many launchers (from oslo.service) to launch
  services whereas we could use just one which is recommended by
  oslo. However, we can't do that because of the api service
  that uses many workers. We'll need to look at how to refactor it
  moving forward.
* Write tests for MistralService and its derrived classes
* Address a number of TODO comments.

Closes-Bug: 1622534
Change-Id: I34ba6a8b8caf8bea17109e0f259085b373eb6d45
2016-11-30 17:42:15 +07:00

53 lines
1.5 KiB
Python

# Copyright 2016 NEC Corporation. All rights reserved.
#
# 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.
from oslo_concurrency import processutils
from oslo_config import cfg
from oslo_service import service
from oslo_service import wsgi
from mistral.api import app
class WSGIService(service.ServiceBase):
"""Provides ability to launch Mistral API from wsgi app."""
def __init__(self, name):
self.name = name
self.app = app.setup_app()
self.workers = (
cfg.CONF.api.api_workers or processutils.get_worker_count()
)
self.server = wsgi.Server(
cfg.CONF,
name,
self.app,
host=cfg.CONF.api.host,
port=cfg.CONF.api.port,
use_ssl=cfg.CONF.api.enable_ssl_api
)
def start(self):
self.server.start()
def stop(self):
self.server.stop()
def wait(self):
self.server.wait()
def reset(self):
self.server.reset()