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# Copyright (c) 2015 Hewlett-Packard Development Company, L.P.
# 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_log import log as logging
from neutron.callbacks import events
from neutron.callbacks import registry
from neutron.callbacks import resources
from networking_odl.common import constants as odl_const
LOG = logging.getLogger(__name__)
class OdlSecurityGroupsHandler(object):
def __init__(self, odl_client, event_type="AFTER"):
self.odl_client = odl_client
self.subscribe(event_type)
def sg_callback(self, resource, event, trigger, **kwargs):
res_key_mapping = {
odl_const.ODL_SGS: odl_const.ODL_SG,
odl_const.ODL_SG_RULES: odl_const.ODL_SG_RULE,
}
res_name_mapping = {
resources.SECURITY_GROUP: odl_const.ODL_SGS,
resources.SECURITY_GROUP_RULE: odl_const.ODL_SG_RULES,
}
ops_mapping = {
events.AFTER_CREATE: odl_const.ODL_CREATE,
events.AFTER_UPDATE: odl_const.ODL_UPDATE,
events.AFTER_DELETE: odl_const.ODL_DELETE,
events.PRECOMMIT_CREATE: odl_const.ODL_CREATE,
events.PRECOMMIT_UPDATE: odl_const.ODL_UPDATE,
events.PRECOMMIT_DELETE: odl_const.ODL_DELETE,
}
# Loop up the ODL's counterpart resource label
# e.g. resources.SECURITY_GROUP -> odl_const.ODL_SGS
# Note: 1) url will use dashes instead of underscore;
# 2) when res is a list, append 's' to odl_res_key
# Ref: https://github.com/opendaylight/neutron/blob/master
# /northbound-api/src/main/java/org/opendaylight
# /neutron/northbound/api
# /NeutronSecurityGroupRequest.java#L33
res = kwargs.get(resource)
res_id = kwargs.get("%s_id" % resource)
odl_res_type = res_name_mapping[resource]
odl_res_key = res_key_mapping[odl_res_type]
odl_ops = ops_mapping[event]
odl_res_type_uri = odl_res_type.replace('_', '-')
if type(res) is list:
odl_res_key += "s"
if res is None:
odl_res_dict = None
else:
odl_res_dict = {odl_res_key: res}
LOG.debug("Calling sync_from_callback with ODL_OPS (%(odl_ops)s) "
"ODL_RES_TYPE (%(odl_res_type)s) RES_ID (%(res_id)s) "
"ODL_RES_KEY (%(odl_res_key)s) RES (%(res)s) "
"KWARGS (%(kwargs)s)",
{'odl_ops': odl_ops, 'odl_res_type': odl_res_type,
'res_id': res_id, 'odl_res_key': odl_res_key, 'res': res,
'kwargs': kwargs})
self.odl_client.sync_from_callback(odl_ops, odl_res_type_uri, res_id,
odl_res_dict)
def subscribe(self, event_type):
registry.subscribe(
self.sg_callback, resources.SECURITY_GROUP,
getattr(events, "%s_CREATE" % event_type))
registry.subscribe(
self.sg_callback, resources.SECURITY_GROUP,
getattr(events, "%s_UPDATE" % event_type))
registry.subscribe(
self.sg_callback, resources.SECURITY_GROUP,
getattr(events, "%s_DELETE" % event_type))
registry.subscribe(
self.sg_callback, resources.SECURITY_GROUP_RULE,
getattr(events, "%s_CREATE" % event_type))
registry.subscribe(
self.sg_callback, resources.SECURITY_GROUP_RULE,
getattr(events, "%s_DELETE" % event_type))
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