Revert "Removes POL code from MON repo"

[osm/MON.git] / policy_module / osm_policy_module / common / lcm_client.py

diff --git a/policy_module/osm_policy_module/common/lcm_client.py b/policy_module/osm_policy_module/common/lcm_client.py
new file mode 100644 (file)
index 0000000..be44efe
--- /dev/null
+++ b/policy_module/osm_policy_module/common/lcm_client.py
@@ -0,0 +1,57 @@
+# -*- coding: utf-8 -*-
+
+# Copyright 2018 Whitestack, LLC
+# *************************************************************
+
+# This file is part of OSM Monitoring module
+# All Rights Reserved to Whitestack, 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.
+
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: bdiaz@whitestack.com or glavado@whitestack.com
+##
+import json
+import logging
+
+from kafka import KafkaProducer
+
+from osm_policy_module.core.config import Config
+
+log = logging.getLogger(__name__)
+
+
+class LcmClient:
+    def __init__(self):
+        cfg = Config.instance()
+        self.kafka_server = '{}:{}'.format(cfg.get('policy_module', 'kafka_server_host'),
+                                           cfg.get('policy_module', 'kafka_server_port'))
+        self.producer = KafkaProducer(bootstrap_servers=self.kafka_server,
+                                      key_serializer=str.encode,
+                                      value_serializer=str.encode)
+
+    def scale(self, nsr_id: str, name: str, action: str):
+        msg = self._create_scale_action_payload(nsr_id, name, action)
+        log.info("Sending scale action message: %s", json.dumps(msg))
+        self.producer.send(topic='lcm_pm', key='trigger_scaling', value=json.dumps(msg))
+        self.producer.flush()
+
+    def _create_scale_action_payload(self, nsr_id: str, name: str, action: str):
+        msg = {
+            "ns_id": nsr_id,
+            "scaling_group_descriptor": {
+                "name": name,
+                "action": action
+            }
+        }
+        return msg