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# -*- coding: utf-8 -*- |
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# Copyright 2018 Whitestack, LLC |
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# ************************************************************* |
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# This file is part of OSM Monitoring module |
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# All Rights Reserved to Whitestack, LLC |
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# Licensed under the Apache License, Version 2.0 (the "License"); you may |
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# not use this file except in compliance with the License. You may obtain |
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# a copy of the License at |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
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# License for the specific language governing permissions and limitations |
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# under the License. |
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# For those usages not covered by the Apache License, Version 2.0 please |
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# contact: bdiaz@whitestack.com or glavado@whitestack.com |
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## |
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import asyncio |
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import json |
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import logging |
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import random |
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from json import JSONDecodeError |
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import yaml |
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from aiokafka import AIOKafkaProducer, AIOKafkaConsumer |
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from osm_policy_module.core.config import Config |
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log = logging.getLogger(__name__) |
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class MonClient: |
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def __init__(self, config: Config, loop=None): |
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self.kafka_server = "{}:{}".format( |
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config.get("message", "host"), config.get("message", "port") |
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) |
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if not loop: |
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loop = asyncio.get_event_loop() |
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self.loop = loop |
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async def create_alarm( |
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self, |
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metric_name: str, |
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ns_id: str, |
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vdu_name: str, |
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vnf_member_index: str, |
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threshold: int, |
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operation: str, |
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statistic: str = "AVERAGE", |
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action: str = '', |
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): |
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cor_id = random.randint(1, 10e7) |
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msg = self._build_create_alarm_payload( |
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cor_id, |
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metric_name, |
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ns_id, |
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vdu_name, |
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vnf_member_index, |
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threshold, |
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statistic, |
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operation, |
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action, |
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) |
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log.debug("Sending create_alarm_request %s", msg) |
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producer = AIOKafkaProducer( |
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loop=self.loop, |
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bootstrap_servers=self.kafka_server, |
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key_serializer=str.encode, |
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value_serializer=str.encode, |
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) |
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await producer.start() |
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try: |
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await producer.send_and_wait( |
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"alarm_request", key="create_alarm_request", value=json.dumps(msg) |
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) |
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finally: |
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await producer.stop() |
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log.debug("Waiting for create_alarm_response...") |
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consumer = AIOKafkaConsumer( |
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"alarm_response_" + str(cor_id), |
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loop=self.loop, |
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bootstrap_servers=self.kafka_server, |
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key_deserializer=bytes.decode, |
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value_deserializer=bytes.decode, |
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auto_offset_reset="earliest", |
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) |
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await consumer.start() |
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alarm_uuid = None |
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try: |
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async for message in consumer: |
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try: |
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content = json.loads(message.value) |
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except JSONDecodeError: |
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content = yaml.safe_load(message.value) |
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log.debug("Received create_alarm_response %s", content) |
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if content["alarm_create_response"]["correlation_id"] == cor_id: |
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if not content["alarm_create_response"]["status"]: |
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raise ValueError("Error creating alarm in MON") |
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alarm_uuid = content["alarm_create_response"]["alarm_uuid"] |
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break |
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finally: |
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await consumer.stop() |
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if not alarm_uuid: |
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raise ValueError("No alarm deletion response from MON. Is MON up?") |
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return alarm_uuid |
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async def delete_alarm( |
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self, ns_id: str, vnf_member_index: str, vdu_name: str, alarm_uuid: str |
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): |
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cor_id = random.randint(1, 10e7) |
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msg = self._build_delete_alarm_payload( |
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cor_id, ns_id, vdu_name, vnf_member_index, alarm_uuid |
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) |
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log.debug("Sending delete_alarm_request %s", msg) |
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producer = AIOKafkaProducer( |
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loop=self.loop, |
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bootstrap_servers=self.kafka_server, |
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key_serializer=str.encode, |
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value_serializer=str.encode, |
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) |
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await producer.start() |
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try: |
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await producer.send_and_wait( |
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"alarm_request", key="delete_alarm_request", value=json.dumps(msg) |
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) |
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finally: |
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await producer.stop() |
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log.debug("Waiting for delete_alarm_response...") |
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consumer = AIOKafkaConsumer( |
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"alarm_response_" + str(cor_id), |
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loop=self.loop, |
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bootstrap_servers=self.kafka_server, |
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key_deserializer=bytes.decode, |
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value_deserializer=bytes.decode, |
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auto_offset_reset="earliest", |
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) |
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await consumer.start() |
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alarm_uuid = None |
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try: |
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async for message in consumer: |
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try: |
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content = json.loads(message.value) |
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except JSONDecodeError: |
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content = yaml.safe_load(message.value) |
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if content["alarm_delete_response"]["correlation_id"] == cor_id: |
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log.debug("Received delete_alarm_response %s", content) |
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if not content["alarm_delete_response"]["status"]: |
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raise ValueError( |
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"Error deleting alarm in MON. Response status is False." |
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) |
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alarm_uuid = content["alarm_delete_response"]["alarm_uuid"] |
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break |
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finally: |
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await consumer.stop() |
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if not alarm_uuid: |
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raise ValueError("No alarm deletion response from MON. Is MON up?") |
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return alarm_uuid |
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def _build_create_alarm_payload( |
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self, |
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cor_id: int, |
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metric_name: str, |
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ns_id: str, |
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vdu_name: str, |
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vnf_member_index: str, |
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threshold: int, |
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statistic: str, |
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operation: str, |
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action: str, |
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): |
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alarm_create_request = { |
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"correlation_id": cor_id, |
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"alarm_name": "osm_alarm_{}_{}_{}_{}".format( |
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ns_id, vnf_member_index, vdu_name, metric_name |
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), |
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"metric_name": metric_name, |
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"operation": operation, |
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"severity": "critical", |
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"threshold_value": threshold, |
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"statistic": statistic, |
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"action": action, |
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"tags": { |
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"ns_id": ns_id, |
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"vdu_name": vdu_name, |
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"vnf_member_index": vnf_member_index, |
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}, |
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} |
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msg = { |
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"alarm_create_request": alarm_create_request, |
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} |
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return msg |
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def _build_delete_alarm_payload( |
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self, |
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cor_id: int, |
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ns_id: str, |
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vdu_name: str, |
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vnf_member_index: str, |
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alarm_uuid: str, |
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): |
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alarm_delete_request = { |
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"correlation_id": cor_id, |
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"alarm_uuid": alarm_uuid, |
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"tags": { |
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"ns_id": ns_id, |
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"vdu_name": vdu_name, |
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"vnf_member_index": vnf_member_index, |
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}, |
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} |
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msg = { |
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"alarm_delete_request": alarm_delete_request, |
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} |
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return msg |
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