# For those usages not covered by the Apache License, Version 2.0 please
# contact: bdiaz@whitestack.com or glavado@whitestack.com
##
+import asyncio
import json
import logging
import random
-import uuid
+from json import JSONDecodeError
-from kafka import KafkaProducer, KafkaConsumer
+import yaml
+from aiokafka import AIOKafkaProducer, AIOKafkaConsumer
from osm_policy_module.core.config import Config
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):
+ def __init__(self, config: Config, loop=None):
+ self.kafka_server = '{}:{}'.format(config.get('message', 'host'),
+ config.get('message', 'port'))
+ if not loop:
+ loop = asyncio.get_event_loop()
+ self.loop = loop
+
+ async def create_alarm(self, metric_name: str, ns_id: str, vdu_name: str, vnf_member_index: str, threshold: int,
+ operation: str, statistic: str = 'AVERAGE'):
+ cor_id = random.randint(1, 10e7)
+ msg = self._build_create_alarm_payload(cor_id,
+ metric_name,
+ ns_id,
+ vdu_name,
+ vnf_member_index,
+ threshold,
+ statistic,
+ operation)
+ log.debug("Sending create_alarm_request %s", msg)
+ producer = AIOKafkaProducer(loop=self.loop,
+ bootstrap_servers=self.kafka_server,
+ key_serializer=str.encode,
+ value_serializer=str.encode)
+ await producer.start()
+ try:
+ await producer.send_and_wait("alarm_request", key="create_alarm_request", value=json.dumps(msg))
+ finally:
+ await producer.stop()
+ log.debug("Waiting for create_alarm_response...")
+ consumer = AIOKafkaConsumer(
+ "alarm_response_" + str(cor_id),
+ loop=self.loop,
+ bootstrap_servers=self.kafka_server,
+ key_deserializer=bytes.decode,
+ value_deserializer=bytes.decode,
+ auto_offset_reset='earliest')
+ await consumer.start()
+ alarm_uuid = None
+ try:
+ async for message in consumer:
+ try:
+ content = json.loads(message.value)
+ except JSONDecodeError:
+ content = yaml.safe_load(message.value)
+ log.debug("Received create_alarm_response %s", content)
+ if content['alarm_create_response']['correlation_id'] == cor_id:
+ if not content['alarm_create_response']['status']:
+ raise ValueError("Error creating alarm in MON")
alarm_uuid = content['alarm_create_response']['alarm_uuid']
- # TODO Handle error response
- return alarm_uuid
+ break
+ finally:
+ await consumer.stop()
+ if not alarm_uuid:
+ raise ValueError('No alarm deletion response from MON. Is MON up?')
+ return alarm_uuid
+
+ async def delete_alarm(self, ns_id: str, vnf_member_index: str, vdu_name: str, alarm_uuid: str):
+ cor_id = random.randint(1, 10e7)
+ msg = self._build_delete_alarm_payload(cor_id, ns_id, vdu_name, vnf_member_index, alarm_uuid)
+ log.debug("Sending delete_alarm_request %s", msg)
+ producer = AIOKafkaProducer(loop=self.loop,
+ bootstrap_servers=self.kafka_server,
+ key_serializer=str.encode,
+ value_serializer=str.encode)
+ await producer.start()
+ try:
+ await producer.send_and_wait("alarm_request", key="delete_alarm_request", value=json.dumps(msg))
+ finally:
+ await producer.stop()
+ log.debug("Waiting for delete_alarm_response...")
+ consumer = AIOKafkaConsumer(
+ "alarm_response_" + str(cor_id),
+ loop=self.loop,
+ bootstrap_servers=self.kafka_server,
+ key_deserializer=bytes.decode,
+ value_deserializer=bytes.decode,
+ auto_offset_reset='earliest')
+ await consumer.start()
+ alarm_uuid = None
+ try:
+ async for message in consumer:
+ try:
+ content = json.loads(message.value)
+ except JSONDecodeError:
+ content = yaml.safe_load(message.value)
+ if content['alarm_delete_response']['correlation_id'] == cor_id:
+ log.debug("Received delete_alarm_response %s", content)
+ if not content['alarm_delete_response']['status']:
+ raise ValueError("Error deleting alarm in MON. Response status is False.")
+ alarm_uuid = content['alarm_delete_response']['alarm_uuid']
+ break
+ finally:
+ await consumer.stop()
+ if not alarm_uuid:
+ raise ValueError('No alarm deletion response from MON. Is MON up?')
+ return alarm_uuid
- raise ValueError('Timeout: No alarm creation response from MON. Is MON up?')
+ def _build_create_alarm_payload(self, cor_id: int,
+ metric_name: str,
+ ns_id: str,
+ vdu_name: str,
+ vnf_member_index: str,
+ threshold: int,
+ statistic: str,
+ operation: str):
- 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()),
+ 'alarm_name': 'osm_alarm_{}_{}_{}_{}'.format(ns_id, vnf_member_index, vdu_name, metric_name),
'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
+ 'statistic': statistic,
+ 'tags': {
+ 'ns_id': ns_id,
+ 'vdu_name': vdu_name,
+ 'vnf_member_index': vnf_member_index,
+ }
}
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
+ def _build_delete_alarm_payload(self, cor_id: int, ns_id: str, vdu_name: str,
+ vnf_member_index: str, alarm_uuid: str):
+ alarm_delete_request = {
+ 'correlation_id': cor_id,
+ 'alarm_uuid': alarm_uuid,
+ 'tags': {
+ 'ns_id': ns_id,
+ 'vdu_name': vdu_name,
+ 'vnf_member_index': vnf_member_index
+ }
+ }
+ msg = {
+ 'alarm_delete_request': alarm_delete_request,
+ }
+ return msg
projects / osm / POL.git / blobdiff