[CORD-2961] Moving AddressManager syncstep from FabricService to here
Change-Id: Ida2fdf430eab8c55e24bfc0ba4c4a0a90e2e9ad9
diff --git a/xos/synchronizer/steps/sync_addressmanagerserviceinstance.py b/xos/synchronizer/steps/sync_addressmanagerserviceinstance.py
new file mode 100644
index 0000000..8c15676
--- /dev/null
+++ b/xos/synchronizer/steps/sync_addressmanagerserviceinstance.py
@@ -0,0 +1,185 @@
+
+# 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.
+
+import requests
+from synchronizers.new_base.syncstep import SyncStep, DeferredException
+from synchronizers.new_base.modelaccessor import *
+
+from xosconfig import Config
+from multistructlog import create_logger
+
+log = create_logger(Config().get('logging'))
+
+DATAPLANE_IP = "dataPlaneIp"
+PREFIX = "prefix"
+NEXT_HOP = "nextHop"
+
+class SyncAddressManagerServiceInstance(SyncStep):
+ provides=[AddressManagerServiceInstance]
+ observes = AddressManagerServiceInstance
+ requested_interval=30
+
+ def get_fabric_onos_service_internal(self):
+ # There will be a ServiceInstanceLink from the FabricService to the Fabric ONOS App
+ fs = FabricService.objects.first()
+ for link in fs.subscribed_links.all():
+ if link.provider_service_instance:
+ # cast from ServiceInstance to ONOSApp
+ service_instance = link.provider_service_instance.leaf_model
+ # cast from Service to ONOSService
+ return service_instance.owner.leaf_model
+
+ return None
+
+ def get_fabric_onos_service(self):
+ fos = self.get_fabric_onos_service_internal()
+ if not fos:
+ raise Exception("Fabric ONOS service not found")
+ return fos
+
+ def get_node_tag(self, node, tagname):
+ tags = Tag.objects.filter(content_type=model_accessor.get_content_type_id(node),
+ object_id=node.id,
+ name=tagname)
+ if tags:
+ return tags[0].value
+ else:
+ return None
+
+ def fetch_pending(self, deleted):
+ # If fetch_pending is being called for delete, then just execute the standard delete logic.
+ if deleted:
+ return super(SyncAddressManagerServiceInstance, self).fetch_pending(deleted)
+
+ fs = FabricService.objects.first()
+ if (not fs) or (not fs.autoconfig):
+ log.info("Not FabricServer or not autoconfig. Returning []");
+ return []
+
+ objs = super(SyncAddressManagerServiceInstance, self).fetch_pending(deleted)
+ objs = list(objs)
+
+ # Check that each is a valid VSG tenant or instance
+ for address_si in objs[:]:
+ sub = self.get_subscriber(address_si)
+ if sub:
+ # TODO: This check is making assumptions about the subscriber service. Consider breaking hardcoded
+ # dependency.
+ if (not hasattr(sub, "instance")) or (not sub.instance):
+ log.info("Skipping %s because it has no instance" % address_si)
+ objs.remove(address_si)
+ else:
+ # Maybe the Address is for an instance
+ # TODO: tenant_for_instance_id needs to be a real database field
+ instance_id = address_si.get_attribute("tenant_for_instance_id")
+ if not instance_id:
+ log.info("Skipping %s because it has no tenant_for_instance_id" % address_si)
+ objs.remove(address_si)
+ else:
+ instances = Instance.objects.filter(id=instance_id)
+ if not instances:
+ log.error("Skipping %s because it appears to be linked to a dead instance" % address_si)
+ objs.remove(address_si)
+ elif not instances[0].instance_name:
+ log.info("Skipping %s because it has no instance.instance_name" % address_si)
+ objs.remove(address_si)
+
+ return objs
+
+ def get_subscriber(self, address_si):
+ links = address_si.provided_links.all()
+ for link in links:
+ if not link.subscriber_service_instance:
+ continue
+ # cast from ServiceInstance to VSGTEnant or similar
+ sub = link.subscriber_service_instance.leaf_model
+ # TODO: check here to make sure it's an appropriate type of ServiceInstance ?
+ return sub
+ return None
+
+ def get_routes_url(self, fos):
+ url = 'http://%s:%s/onos/routeservice/routes' % (fos.rest_hostname, fos.rest_port)
+
+ log.info("url: %s" % url)
+ return url
+
+ def sync_record(self, address_si):
+ fos = self.get_fabric_onos_service()
+
+ data = self.map_tenant_to_route(address_si)
+ if not data:
+ # Raise an exception so the synchronizer does not mark this record as synced
+ raise Exception("map_tenant_to_route returned no data for %s" % address_si)
+
+ r = self.post_route(fos, data)
+
+ log.info("Posted %s: status: %s result '%s'" % (address_si, r.status_code, r.text))
+
+ def delete_record(self, address_si):
+ pass
+ # Disabled for now due to lack of feedback state field
+ # self.delete_route(self.get_fabric_onos_service(), self.map_tenant_to_route(address_si))
+
+
+ def map_tenant_to_route(self, address_si):
+ instance = None
+ # Address setup is kind of hacky right now, we'll
+ # need to revisit. The idea is:
+ # * Look up the instance corresponding to the address
+ # * Look up the node running the instance
+ # * Get the "dataPlaneIp" tag, push to the fabric
+
+ sub = self.get_subscriber(address_si)
+ if sub:
+ # TODO: This check is making assumptions about the subscriber service. Consider breaking hardcoded
+ # dependency.
+ if hasattr(sub, "instance"):
+ instance = sub.instance
+ else:
+ instance_id = address_si.get_attribute("tenant_for_instance_id")
+ instances = Instance.objects.filter(id=instance_id)
+ if instances:
+ instance = instances[0]
+
+ if not instance:
+ return None
+
+ node = instance.node
+ dataPlaneIp = node.dataPlaneIp
+
+ if not dataPlaneIp:
+ raise DeferredException("No IP found for node %s tenant %s -- skipping" % (str(node), str(address_si)))
+
+ data = {
+ PREFIX : "%s/32" % address_si.public_ip,
+ NEXT_HOP : dataPlaneIp.split('/')[0]
+ }
+
+ return data
+
+ def delete_route(self, fos, route):
+ url = self.get_routes_url(fos)
+
+ r = requests.delete(url, json=route, auth=(fos.rest_username, fos.rest_password))
+
+ log.info("status: %s" % r.status_code)
+ log.info('result: %s' % r.text)
+
+ return r
+
+ def post_route(self, fos, route):
+ url = self.get_routes_url(fos)
+ return requests.post(url, json=route, auth=(fos.rest_username, fos.rest_password))
+