/usr/lib/python2.7/dist-packages/sahara/main.py is in python-sahara 1:4.0.0-1ubuntu1.
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#
# 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()
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