SEBA-89 Framework for fabric-crossconnect service
Change-Id: I65d8199b50703feaf828ca9bc251558ac2878fae
diff --git a/xos/synchronizer/steps/sync_fabric_crossconnect_service_instance.py b/xos/synchronizer/steps/sync_fabric_crossconnect_service_instance.py
new file mode 100644
index 0000000..8f03075
--- /dev/null
+++ b/xos/synchronizer/steps/sync_fabric_crossconnect_service_instance.py
@@ -0,0 +1,114 @@
+# Copyright 2017-present Open Networking Foundation
+#
+# 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 synchronizers.new_base.syncstep import SyncStep, DeferredException
+from synchronizers.new_base.modelaccessor import model_accessor, FabricCrossconnectServiceInstance, ServiceInstance
+
+from xosconfig import Config
+from multistructlog import create_logger
+import urllib
+import requests
+from requests.auth import HTTPBasicAuth
+
+
+class SyncFabricCrossconnectServiceInstance(SyncStep):
+ provides = [FabricCrossconnectServiceInstance]
+ log = create_logger(Config().get('logging'))
+
+ observes = FabricCrossconnectServiceInstance
+
+ @staticmethod
+ def format_url(url):
+ if 'http' in url:
+ return url
+ else:
+ return 'http://%s' % url
+
+ @staticmethod
+ def get_fabric_onos_info(si):
+
+ # get the fabric-crossconnect service
+ fabric_crossconnect = si.owner
+
+ # get the onos_fabric service
+ fabric_onos = [s.leaf_model for s in fabric_crossconnect.provider_services if "onos" in s.name.lower()]
+
+ if len(fabric_onos) == 0:
+ raise Exception('Cannot find ONOS service in provider_services of Fabric-Crossconnect')
+
+ fabric_onos = fabric_onos[0]
+
+ return {
+ 'url': SyncFabricCrossconnectServiceInstance.format_url("%s:%s" % (fabric_onos.rest_hostname, fabric_onos.rest_port)),
+ 'user': fabric_onos.rest_username,
+ 'pass': fabric_onos.rest_password
+ }
+
+ def get_bng_port(self, o):
+ # TODO(smbaker): Get BNG port from somewhere
+ return 2
+
+ def sync_record(self, o):
+ self.log.info("Sync'ing Fabric Crossconnect Service Instance", service_instance=o)
+
+ onos = self.get_fabric_onos_info(o)
+
+ si = ServiceInstance.objects.get(id=o.id)
+
+ s_tag = si.get_westbound_service_instance_properties("s_tag")
+ west_dpid = si.get_westbound_service_instance_properties("switch_datapath_id")
+ west_port = si.get_westbound_service_instance_properties("switch_port")
+ east_port = self.get_bng_port(o)
+
+ data = { "deviceId": west_dpid,
+ "vlanId": s_tag,
+ "ports": [ west_port, east_port ] }
+
+ url = onos['url'] + '/onos/segmentsrouting/xconnect'
+
+ self.log.info("Sending request to ONOS", url=url, body=data)
+
+ r = requests.post(url, json=data, auth=HTTPBasicAuth(onos['user'], onos['pass']))
+
+ if r.status_code != 200:
+ raise Exception("Failed to create fabric crossconnect in ONOS: %s" % r.text)
+
+ self.log.info("ONOS response", res=r.text)
+
+ def delete_record(self, o):
+ self.log.info("Deleting Fabric Crossconnect Service Instance", service_instance=o)
+
+ # TODO(smbaker): make sure it's not in use by some other subscriber
+
+ if o.enacted:
+ onos = self.get_fabric_onos_info(o)
+
+ si = ServiceInstance.objects.get(id=o.id)
+
+ # TODO(smbaker): unable to get westbound service_instance while deleting?
+
+ s_tag = si.get_westbound_service_instance_properties("s_tag")
+ west_dpid = si.get_westbound_service_instance_properties("switch_datapath_id")
+
+ data = { "deviceId": west_dpid,
+ "vlanID": s_tag }
+
+ url = onos['url'] + '/onos/segmentrouting/xconnect'
+
+ r = requests.delete(url, json=data, auth=HTTPBasicAuth(onos['user'], onos['pass']))
+
+ if r.status_code != 204:
+ raise Exception("Failed to remove fabric crossconnect in ONOS: %s" % r.text)
+
+ self.log.info("ONOS response", res=r.text)