--- /dev/null
+# -*- 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 typing import Dict, List
+
+import yaml
+from kafka import KafkaConsumer
+from osm_policy_module.common.alarm_config import AlarmConfig
+from osm_policy_module.common.lcm_client import LcmClient
+from osm_policy_module.common.mon_client import MonClient
+from osm_policy_module.core.config import Config
+from osm_policy_module.core.database import ScalingRecord, ScalingAlarm
+
+log = logging.getLogger(__name__)
+
+
+class PolicyModuleAgent:
+ def run(self):
+ cfg = Config.instance()
+ # Initialize servers
+ kafka_server = '{}:{}'.format(cfg.get('policy_module', 'kafka_server_host'),
+ cfg.get('policy_module', 'kafka_server_port'))
+
+ # Initialize Kafka consumer
+ log.info("Connecting to Kafka server at %s", kafka_server)
+ consumer = KafkaConsumer(bootstrap_servers=kafka_server,
+ key_deserializer=bytes.decode,
+ value_deserializer=bytes.decode,
+ group_id="pm-consumer")
+ consumer.subscribe(['lcm_pm', 'alarm_response'])
+
+ for message in consumer:
+ log.info("Message arrived: %s", message)
+ try:
+ if message.key == 'configure_scaling':
+ try:
+ content = json.loads(message.value)
+ except:
+ content = yaml.safe_load(message.value)
+ log.info("Creating scaling record in DB")
+ # TODO: Use transactions: http://docs.peewee-orm.com/en/latest/peewee/transactions.html
+ scaling_record = ScalingRecord.create(
+ nsr_id=content['ns_id'],
+ name=content['scaling_group_descriptor']['name'],
+ content=json.dumps(content)
+ )
+ log.info("Created scaling record in DB : nsr_id=%s, name=%s, content=%s",
+ scaling_record.nsr_id,
+ scaling_record.name,
+ scaling_record.content)
+ alarm_configs = self._get_alarm_configs(content)
+ for config in alarm_configs:
+ mon_client = MonClient()
+ log.info("Creating alarm record in DB")
+ alarm_uuid = mon_client.create_alarm(
+ metric_name=config.metric_name,
+ ns_id=scaling_record.nsr_id,
+ vdu_name=config.vdu_name,
+ vnf_member_index=config.vnf_member_index,
+ threshold=config.threshold,
+ operation=config.operation,
+ statistic=config.statistic
+ )
+ ScalingAlarm.create(
+ alarm_id=alarm_uuid,
+ action=config.action,
+ scaling_record=scaling_record
+ )
+ if message.key == 'notify_alarm':
+ content = json.loads(message.value)
+ alarm_id = content['notify_details']['alarm_uuid']
+ metric_name = content['notify_details']['metric_name']
+ operation = content['notify_details']['operation']
+ threshold = content['notify_details']['threshold_value']
+ vdu_name = content['notify_details']['vdu_name']
+ vnf_member_index = content['notify_details']['vnf_member_index']
+ ns_id = content['notify_details']['ns_id']
+ log.info(
+ "Received alarm notification for alarm %s, \
+ metric %s, \
+ operation %s, \
+ threshold %s, \
+ vdu_name %s, \
+ vnf_member_index %s, \
+ ns_id %s ",
+ alarm_id, metric_name, operation, threshold, vdu_name, vnf_member_index, ns_id)
+ try:
+ alarm = ScalingAlarm.select().where(ScalingAlarm.alarm_id == alarm_id).get()
+ lcm_client = LcmClient()
+ log.info("Sending scaling action message for ns: %s", alarm_id)
+ lcm_client.scale(alarm.scaling_record.nsr_id, alarm.scaling_record.name, alarm.action)
+ except ScalingAlarm.DoesNotExist:
+ log.info("There is no action configured for alarm %s.", alarm_id)
+ except Exception:
+ log.exception("Error consuming message: ")
+
+ def _get_alarm_configs(self, message_content: Dict) -> List[AlarmConfig]:
+ scaling_criterias = message_content['scaling_group_descriptor']['scaling_policy']['scaling_criteria']
+ alarm_configs = []
+ for criteria in scaling_criterias:
+ metric_name = ''
+ scale_out_threshold = criteria['scale_out_threshold']
+ scale_in_threshold = criteria['scale_in_threshold']
+ scale_out_operation = criteria['scale_out_relational_operation']
+ scale_in_operation = criteria['scale_in_relational_operation']
+ statistic = criteria['monitoring_param']['aggregation_type']
+ vdu_name = ''
+ vnf_member_index = ''
+ if 'vdu_monitoring_param' in criteria['monitoring_param']:
+ vdu_name = criteria['monitoring_param']['vdu_monitoring_param']['vdu_name']
+ vnf_member_index = criteria['monitoring_param']['vdu_monitoring_param']['vnf_member_index']
+ metric_name = criteria['monitoring_param']['vdu_monitoring_param']['name']
+ if 'vnf_metric' in criteria['monitoring_param']:
+ # TODO vnf_metric
+ continue
+ if 'vdu_metric' in criteria['monitoring_param']:
+ # TODO vdu_metric
+ continue
+ scale_out_alarm_config = AlarmConfig(metric_name,
+ vdu_name,
+ vnf_member_index,
+ scale_out_threshold,
+ scale_out_operation,
+ statistic,
+ 'scale_out')
+ scale_in_alarm_config = AlarmConfig(metric_name,
+ vdu_name,
+ vnf_member_index,
+ scale_in_threshold,
+ scale_in_operation,
+ statistic,
+ 'scale_in')
+ alarm_configs.append(scale_in_alarm_config)
+ alarm_configs.append(scale_out_alarm_config)
+ return alarm_configs
projects / osm / MON.git / blobdiff