[CORD-2809] Synchronizer OLTDevice in VOLTHA

Change-Id: Ie4f2e10efd035e3fcb6066e5f7bd859179fa2fea
diff --git a/xos/synchronizer/steps/sync_volt_service.py b/xos/synchronizer/steps/sync_volt_service.py
new file mode 100644
index 0000000..cae1ea3
--- /dev/null
+++ b/xos/synchronizer/steps/sync_volt_service.py
@@ -0,0 +1,61 @@
+# 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 json
+from synchronizers.new_base.SyncInstanceUsingAnsible import SyncStep
+from synchronizers.new_base.modelaccessor import VOLTService
+
+from xosconfig import Config
+from multistructlog import create_logger
+from time import sleep
+import requests
+from requests.auth import HTTPBasicAuth
+
+log = create_logger(Config().get('logging'))
+
+class SyncOLTService(SyncStep):
+    provides = [VOLTService]
+
+    observes = VOLTService
+
+    @staticmethod
+    def format_url(url):
+        if 'http' in url:
+            return url
+        else:
+            return 'http://%s' % url
+
+    @staticmethod
+    def get_p_onos_info(o):
+        return {
+            'url': SyncOLTDevice.format_url(o.volt_service.p_onos_url),
+            'user': o.volt_service.p_onos_user,
+            'pass': o.volt_service.p_onos_pass
+        }
+
+    def sync_record(self, o):
+        log.info("sync'ing olt service", object=str(o), **o.tologdict())
+
+        if o.onu_provisioning == "allow_all":
+            # tell ONOS to create the ONU device (POST xosapi/v1/volt/onudevices)
+            pass
+        if o.onu_provisioning == "pre_provisioned" or o.onu_provisioning == "oss":
+            # tell ONOS to update the ONU device (POST xosapi/v1/volt/onudevices/<id>)
+            # NOTE ONOS will need to find the <id>
+            # NOTE if onu_provisioning == oss then XOS will need to make a call to the oss server to validate the onu
+            pass
+
+
+    def delete_record(self, o):
+        pass