tricircle/cmd/dispatcher.py

86 lines
2.5 KiB
Python

# Copyright 2015 Huawei Technologies Co., Ltd.
#
# 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 eventlet
if __name__ == "__main__":
eventlet.monkey_patch()
import sys
import traceback
from oslo_config import cfg
from oslo_log import log as logging
from tricircle.common.i18n import _LE
from tricircle.common.nova_lib import conductor_rpcapi
from tricircle.common.nova_lib import db_api as nova_db_api
from tricircle.common.nova_lib import exception as nova_exception
from tricircle.common.nova_lib import objects as nova_objects
from tricircle.common.nova_lib import objects_base
from tricircle.common.nova_lib import quota
from tricircle.common.nova_lib import rpc as nova_rpc
from tricircle.dispatcher import service
def block_db_access():
class NoDB(object):
def __getattr__(self, attr):
return self
def __call__(self, *args, **kwargs):
stacktrace = "".join(traceback.format_stack())
LOG = logging.getLogger('nova.compute')
LOG.error(_LE('No db access allowed in nova-compute: %s'),
stacktrace)
raise nova_exception.DBNotAllowed('nova-compute')
nova_db_api.IMPL = NoDB()
def set_up_nova_object_indirection():
conductor = conductor_rpcapi.ConductorAPI()
conductor.client.target.exchange = "nova"
objects_base.NovaObject.indirection_api = conductor
def process_command_line_arguments():
logging.register_options(cfg.CONF)
logging.set_defaults()
cfg.CONF(sys.argv[1:])
logging.setup(cfg.CONF, "dispatcher", version='0.1')
def _set_up_nova_objects():
nova_rpc.init(cfg.CONF)
block_db_access()
set_up_nova_object_indirection()
nova_objects.register_all()
def _disable_quotas():
QUOTAS = quota.QUOTAS
QUOTAS._driver_cls = quota.NoopQuotaDriver()
if __name__ == "__main__":
_set_up_nova_objects()
_disable_quotas()
process_command_line_arguments()
server = service.setup_server()
server.start()
server.wait()