# Copyright (c) 2012 OpenStack, LLC.
#
# 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 quantum.openstack.common import log as logging
from quantum.openstack.common.rpc import dispatcher
from quantum import context


LOG = logging.getLogger(__name__)


class PluginRpcDispatcher(dispatcher.RpcDispatcher):
    """This class is used to convert RPC common context into
    Quantum Context."""

    def __init__(self, callbacks):
        super(PluginRpcDispatcher, self).__init__(callbacks)

    def dispatch(self, rpc_ctxt, version, method, **kwargs):
        rpc_ctxt_dict = rpc_ctxt.to_dict()
        user_id = rpc_ctxt_dict.pop('user_id', None)
        if not user_id:
            user_id = rpc_ctxt_dict.pop('user', None)
        tenant_id = rpc_ctxt_dict.pop('tenant_id', None)
        if not tenant_id:
            tenant_id = rpc_ctxt_dict.pop('project_id', None)
        quantum_ctxt = context.Context(user_id, tenant_id, **rpc_ctxt_dict)
        return super(PluginRpcDispatcher, self).dispatch(
            quantum_ctxt, version, method, **kwargs)
