Migrates POL code from MON repo
Adds support for VDU metric autoscaling
Modifies env var names
Signed-off-by: Benjamin Diaz <bdiaz@whitestack.com>
Change-Id: If9587e1b8eacaf6fb297306050a97d33c8a63ead
diff --git a/osm_policy_module/common/__init__.py b/osm_policy_module/common/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/osm_policy_module/common/__init__.py
diff --git a/osm_policy_module/common/lcm_client.py b/osm_policy_module/common/lcm_client.py
new file mode 100644
index 0000000..7857d26
--- /dev/null
+++ b/osm_policy_module/common/lcm_client.py
@@ -0,0 +1,89 @@
+# -*- 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 datetime
+import json
+import logging
+import time
+import uuid
+
+from kafka import KafkaProducer
+from osm_common import dbmongo
+
+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.OSMPOL_MESSAGE_HOST,
+ cfg.OSMPOL_MESSAGE_PORT)
+ self.producer = KafkaProducer(bootstrap_servers=self.kafka_server,
+ key_serializer=str.encode,
+ value_serializer=str.encode)
+ self.common_db = dbmongo.DbMongo()
+ self.common_db.db_connect({'host': cfg.OSMPOL_DATABASE_HOST,
+ 'port': int(cfg.OSMPOL_DATABASE_PORT),
+ 'name': 'osm'})
+
+ def scale(self, nsr_id: str, scaling_group_name: str, vnf_member_index: int, action: str):
+ nslcmop = self._generate_nslcmop(nsr_id, scaling_group_name, vnf_member_index, action)
+ self.common_db.create("nslcmops", nslcmop)
+ log.info("Sending scale action message: %s", json.dumps(nslcmop))
+ self.producer.send(topic='ns', key='scale', value=json.dumps(nslcmop))
+ self.producer.flush()
+
+ def _generate_nslcmop(self, nsr_id: str, scaling_group_name: str, vnf_member_index: int, action: str):
+ _id = str(uuid.uuid4())
+ now = time.time()
+ params = {
+ "scaleType": "SCALE_VNF",
+ "scaleVnfData": {
+ "scaleVnfType": action.upper(),
+ "scaleByStepData": {
+ "scaling-group-descriptor": scaling_group_name,
+ "member-vnf-index": str(vnf_member_index)
+ }
+ },
+ "scaleTime": "{}Z".format(datetime.datetime.utcnow().isoformat())
+ }
+
+ nslcmop = {
+ "id": _id,
+ "_id": _id,
+ "operationState": "PROCESSING",
+ "statusEnteredTime": now,
+ "nsInstanceId": nsr_id,
+ "lcmOperationType": "scale",
+ "startTime": now,
+ "isAutomaticInvocation": True,
+ "operationParams": params,
+ "isCancelPending": False,
+ "links": {
+ "self": "/osm/nslcm/v1/ns_lcm_op_occs/" + _id,
+ "nsInstance": "/osm/nslcm/v1/ns_instances/" + nsr_id,
+ }
+ }
+ return nslcmop
diff --git a/osm_policy_module/common/mon_client.py b/osm_policy_module/common/mon_client.py
new file mode 100644
index 0000000..724fe83
--- /dev/null
+++ b/osm_policy_module/common/mon_client.py
@@ -0,0 +1,89 @@
+# -*- 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
+import random
+import uuid
+
+from kafka import KafkaProducer, KafkaConsumer
+
+from osm_policy_module.core.config import Config
+
+log = logging.getLogger(__name__)
+
+
+class MonClient:
+ def __init__(self):
+ cfg = Config.instance()
+ self.kafka_server = '{}:{}'.format(cfg.OSMPOL_MESSAGE_HOST,
+ cfg.OSMPOL_MESSAGE_PORT)
+ self.producer = KafkaProducer(bootstrap_servers=self.kafka_server,
+ key_serializer=str.encode,
+ value_serializer=str.encode)
+
+ def create_alarm(self, metric_name: str, ns_id: str, vdu_name: str, vnf_member_index: int, threshold: int,
+ statistic: str, operation: str):
+ cor_id = random.randint(1, 1000000)
+ msg = self._create_alarm_payload(cor_id, metric_name, ns_id, vdu_name, vnf_member_index, threshold, statistic,
+ operation)
+ log.info("Sending create_alarm_request %s", msg)
+ self.producer.send(topic='alarm_request', key='create_alarm_request', value=json.dumps(msg))
+ self.producer.flush()
+ consumer = KafkaConsumer(bootstrap_servers=self.kafka_server,
+ key_deserializer=bytes.decode,
+ value_deserializer=bytes.decode,
+ consumer_timeout_ms=10000)
+ consumer.subscribe(['alarm_response'])
+ for message in consumer:
+ if message.key == 'create_alarm_response':
+ content = json.loads(message.value)
+ log.info("Received create_alarm_response %s", content)
+ if self._is_alarm_response_correlation_id_eq(cor_id, content):
+ alarm_uuid = content['alarm_create_response']['alarm_uuid']
+ # TODO Handle error response
+ return alarm_uuid
+
+ raise ValueError('Timeout: No alarm creation response from MON. Is MON up?')
+
+ def _create_alarm_payload(self, cor_id: int, metric_name: str, ns_id: str, vdu_name: str, vnf_member_index: int,
+ threshold: int, statistic: str, operation: str):
+ alarm_create_request = {
+ 'correlation_id': cor_id,
+ 'alarm_name': str(uuid.uuid4()),
+ 'metric_name': metric_name,
+ 'ns_id': ns_id,
+ 'vdu_name': vdu_name,
+ 'vnf_member_index': vnf_member_index,
+ 'operation': operation,
+ 'severity': 'critical',
+ 'threshold_value': threshold,
+ 'statistic': statistic
+ }
+ msg = {
+ 'alarm_create_request': alarm_create_request,
+ }
+ return msg
+
+ def _is_alarm_response_correlation_id_eq(self, cor_id, message_content):
+ return message_content['alarm_create_response']['correlation_id'] == cor_id