sahara/sahara/main.py
Michael Krotscheck 8b4b3abdaf Moved CORS middleware configuration into oslo-config-generator
The default values needed for sahara's implementation of cors
middleware have been moved from paste.ini into the configuration
hooks provided by oslo.config. Furthermore, these values have been
added to the default initialization procedure. This ensures
that if a value remains unset in the configuration file, it will
fallback to using sane defaults. It also ensures that an operator
modifying the configuration will be presented with that same
set of defaults.

Change-Id: Iedcaa002ff3d40cf61168769bc3946f8c6e42b87
Closes-Bug: 1551836
2016-03-03 14:01:09 -08:00

167 lines
4.9 KiB
Python

# Copyright (c) 2013 Mirantis 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 os
from oslo_config import cfg
from oslo_log import log
from oslo_service import service as oslo_service
from oslo_service import sslutils
from oslo_service import wsgi as oslo_wsgi
import stevedore
from sahara.api import acl
from sahara.common import config as common_config
from sahara import config
from sahara.i18n import _LI
from sahara.i18n import _LW
from sahara.plugins import base as plugins_base
from sahara.service import api as service_api
from sahara.service.castellan import config as castellan
from sahara.service.edp import api as edp_api
from sahara.service import ops as service_ops
from sahara.service import periodic
from sahara.utils.openstack import cinder
from sahara.utils import remote
from sahara.utils import rpc as messaging
LOG = log.getLogger(__name__)
opts = [
cfg.StrOpt('os_region_name',
help='Region name used to get services endpoints.'),
cfg.StrOpt('remote',
default='ssh',
help='A method for Sahara to execute commands '
'on VMs.'),
cfg.IntOpt('api_workers', default=1,
help="Number of workers for Sahara API service (0 means "
"all-in-one-thread configuration)."),
# TODO(vgridnev): Remove in N release
cfg.StrOpt('infrastructure_engine',
default='heat',
help='An engine which will be used to provision '
'infrastructure for Hadoop cluster.',
deprecated_for_removal=True),
]
INFRASTRUCTURE_ENGINE = 'heat'
CONF = cfg.CONF
CONF.register_opts(opts)
class SaharaWSGIService(oslo_wsgi.Server):
def __init__(self, service_name, app):
super(SaharaWSGIService, self).__init__(
CONF, service_name, app, host=CONF.host, port=CONF.port,
use_ssl=sslutils.is_enabled(CONF))
def setup_common(possible_topdir, service_name):
dev_conf = os.path.join(possible_topdir,
'etc',
'sahara',
'sahara.conf')
config_files = None
if os.path.exists(dev_conf):
config_files = [dev_conf]
config.parse_configs(config_files)
common_config.set_config_defaults()
log.setup(CONF, "sahara")
# Validate other configurations (that may produce logs) here
cinder.validate_config()
castellan.validate_config()
if (service_name != 'all-in-one' or
CONF.oslo_messaging_notifications.enable):
messaging.setup()
plugins_base.setup_plugins()
LOG.info(_LI('Sahara {service} started').format(service=service_name))
def setup_sahara_api(mode):
ops = _get_ops_driver(mode)
service_api.setup_service_api(ops)
edp_api.setup_edp_api(ops)
def setup_sahara_engine():
periodic.setup()
engine = _get_infrastructure_engine()
service_ops.setup_ops(engine)
remote_driver = _get_remote_driver()
remote.setup_remote(remote_driver, engine)
def setup_auth_policy():
acl.setup_policy()
def make_app():
app_loader = oslo_wsgi.Loader(CONF)
return app_loader.load_app("sahara")
def _load_driver(namespace, name):
extension_manager = stevedore.DriverManager(
namespace=namespace,
name=name,
invoke_on_load=True
)
LOG.info(_LI("Driver {name} successfully loaded").format(name=name))
return extension_manager.driver
def _get_infrastructure_engine():
"""Import and return one of sahara.service.*_engine.py modules."""
if CONF.infrastructure_engine != "heat":
LOG.warning(_LW("Engine {engine} is not supported. Loading Heat "
"infrastructure engine instead.").format(
engine=CONF.infrastructure_engine))
LOG.debug("Infrastructure engine {engine} is loading".format(
engine=INFRASTRUCTURE_ENGINE))
return _load_driver('sahara.infrastructure.engine', INFRASTRUCTURE_ENGINE)
def _get_remote_driver():
LOG.debug("Remote {remote} is loading".format(remote=CONF.remote))
return _load_driver('sahara.remote', CONF.remote)
def _get_ops_driver(driver_name):
LOG.debug("Ops {driver} is loading".format(driver=driver_name))
return _load_driver('sahara.run.mode', driver_name)
def get_process_launcher():
return oslo_service.ProcessLauncher(CONF)
def launch_api_service(launcher, service):
launcher.launch_service(service, workers=CONF.api_workers)
service.start()
launcher.wait()