# For those usages not covered by the Apache License, Version 2.0 please
# contact: bdiaz@whitestack.com or glavado@whitestack.com
##
-import json
+import asyncio
import logging
-import threading
-from json import JSONDecodeError
+from pathlib import Path
+import os
-import yaml
-from kafka import KafkaConsumer
+import peewee
-from osm_policy_module.common.db_client import DbClient
-from osm_policy_module.common.lcm_client import LcmClient
-from osm_policy_module.common.mon_client import MonClient
-from osm_policy_module.core import database
+from osm_policy_module.alarming.service import AlarmingService
+from osm_policy_module.autoscaling.service import AutoscalingService
+from osm_policy_module.healing.service import HealingService
+from osm_policy_module.common.common_db_client import CommonDbClient
+from osm_policy_module.common.message_bus_client import MessageBusClient
from osm_policy_module.core.config import Config
-from osm_policy_module.core.database import ScalingRecord, ScalingAlarm
log = logging.getLogger(__name__)
+ALLOWED_KAFKA_KEYS = [
+ "instantiated",
+ "scaled",
+ "terminated",
+ "notify_alarm",
+ "policy_updated",
+ "vnf_terminated",
+]
+
class PolicyModuleAgent:
- def __init__(self):
- cfg = Config.instance()
- self.db_client = DbClient()
- self.mon_client = MonClient()
- self.kafka_server = '{}:{}'.format(cfg.OSMPOL_MESSAGE_HOST,
- cfg.OSMPOL_MESSAGE_PORT)
+ def __init__(self, config: Config):
+ self.conf = config
+ self.msg_bus = MessageBusClient(config)
+ self.db_client = CommonDbClient(config)
+ self.autoscaling_service = AutoscalingService(config)
+ self.alarming_service = AlarmingService(config)
+ self.healing_service = HealingService(config)
def run(self):
- consumer = KafkaConsumer(bootstrap_servers=self.kafka_server,
- key_deserializer=bytes.decode,
- value_deserializer=bytes.decode,
- group_id='pol-consumer')
- consumer.subscribe(["ns", "alarm_response"])
+ asyncio.run(self.start())
+
+ async def start(self):
+ Path("/tmp/osm_pol_agent_health_flag").touch()
+ topics = ["ns", "alarm_response"]
+ await self.msg_bus.aioread(topics, self._process_msg)
+ log.critical("Exiting...")
+ if os.path.exists("/tmp/osm_pol_agent_health_flag"):
+ os.remove("/tmp/osm_pol_agent_health_flag")
+
+ async def _process_msg(self, topic, key, msg):
+ Path("/tmp/osm_pol_agent_health_flag").touch()
+ log.debug("_process_msg topic=%s key=%s msg=%s", topic, key, msg)
+ try:
+ if key in ALLOWED_KAFKA_KEYS:
+ if key == "instantiated":
+ await self._handle_instantiated(msg)
- for message in consumer:
- t = threading.Thread(target=self._process_msg, args=(message.topic, message.key, message.value,))
- t.start()
+ if key == "scaled":
+ await self._handle_scaled(msg)
- def _process_msg(self, topic, key, msg):
- try:
- # Check for ns instantiation
- if key == 'instantiated':
- try:
- content = json.loads(msg)
- except JSONDecodeError:
- content = yaml.safe_load(msg)
- log.info("Message arrived with topic: %s, key: %s, msg: %s", topic, key, content)
- nslcmop_id = content['nslcmop_id']
- nslcmop = self.db_client.get_nslcmop(nslcmop_id)
- if nslcmop['operationState'] == 'COMPLETED' or nslcmop['operationState'] == 'PARTIALLY_COMPLETED':
- nsr_id = nslcmop['nsInstanceId']
- log.info("Configuring scaling groups for network service with nsr_id: %s", nsr_id)
- self._configure_scaling_groups(nsr_id)
- else:
- log.info(
- "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
- "Current state is %s. Skipping...",
- nslcmop['operationState'])
-
- if key == 'notify_alarm':
- try:
- content = json.loads(msg)
- except JSONDecodeError:
- content = yaml.safe_load(msg)
- log.info("Message arrived with topic: %s, key: %s, msg: %s", topic, key, content)
- 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.vnf_member_index,
- alarm.action)
- except ScalingAlarm.DoesNotExist:
- log.info("There is no action configured for alarm %s.", alarm_id)
+ if key == "terminated":
+ await self._handle_terminated(msg)
+
+ if key == "notify_alarm":
+ await self._handle_alarm_notification(msg)
+
+ if key == "policy_updated":
+ await self._handle_policy_update(msg)
+
+ if key == "vnf_terminated":
+ await self._handle_vnf_terminated(msg)
+ else:
+ log.debug("Key %s is not in ALLOWED_KAFKA_KEYS", key)
+ except peewee.PeeweeException:
+ log.exception("Database error consuming message: ")
+ raise
except Exception:
log.exception("Error consuming message: ")
- def _configure_scaling_groups(self, nsr_id: str):
- # TODO(diazb): Check for alarm creation on exception and clean resources if needed.
- with database.db.atomic():
- vnfrs = self.db_client.get_vnfrs(nsr_id)
- log.info("Checking %s vnfrs...", len(vnfrs))
- for vnfr in vnfrs:
- vnfd = self.db_client.get_vnfd(vnfr['vnfd-id'])
- log.info("Looking for vnfd %s", vnfr['vnfd-id'])
- scaling_groups = vnfd['scaling-group-descriptor']
- vnf_monitoring_params = vnfd['monitoring-param']
- for scaling_group in scaling_groups:
- log.info("Creating scaling record in DB...")
- scaling_record = ScalingRecord.create(
- nsr_id=nsr_id,
- name=scaling_group['name'],
- content=json.dumps(scaling_group)
- )
- log.info("Created scaling record in DB : nsr_id=%s, name=%s, content=%s",
- scaling_record.nsr_id,
- scaling_record.name,
- scaling_record.content)
- for scaling_policy in scaling_group['scaling-policy']:
- for vdur in vnfd['vdu']:
- vdu_monitoring_params = vdur['monitoring-param']
- for scaling_criteria in scaling_policy['scaling-criteria']:
- vnf_monitoring_param = next(
- filter(lambda param: param['id'] == scaling_criteria['vnf-monitoring-param-ref'],
- vnf_monitoring_params))
- # TODO: Add support for non-nfvi metrics
- vdu_monitoring_param = next(
- filter(
- lambda param: param['id'] == vnf_monitoring_param['vdu-monitoring-param-ref'],
- vdu_monitoring_params))
- alarm_uuid = self.mon_client.create_alarm(
- metric_name=vdu_monitoring_param['nfvi-metric'],
- ns_id=nsr_id,
- vdu_name=vdur['name'],
- vnf_member_index=vnfr['member-vnf-index-ref'],
- threshold=scaling_criteria['scale-in-threshold'],
- operation=scaling_criteria['scale-in-relational-operation'],
- statistic=vnf_monitoring_param['aggregation-type']
- )
- ScalingAlarm.create(
- alarm_id=alarm_uuid,
- action='scale_in',
- vnf_member_index=int(vnfr['member-vnf-index-ref']),
- vdu_name=vdur['name'],
- scaling_record=scaling_record
- )
- alarm_uuid = self.mon_client.create_alarm(
- metric_name=vdu_monitoring_param['nfvi-metric'],
- ns_id=nsr_id,
- vdu_name=vdur['name'],
- vnf_member_index=vnfr['member-vnf-index-ref'],
- threshold=scaling_criteria['scale-out-threshold'],
- operation=scaling_criteria['scale-out-relational-operation'],
- statistic=vnf_monitoring_param['aggregation-type']
- )
- ScalingAlarm.create(
- alarm_id=alarm_uuid,
- action='scale_out',
- vnf_member_index=int(vnfr['member-vnf-index-ref']),
- vdu_name=vdur['name'],
- scaling_record=scaling_record
- )
+ async def _handle_alarm_notification(self, content):
+ log.debug("_handle_alarm_notification: %s", content)
+ alarm_uuid = content["notify_details"]["alarm_uuid"]
+ status = content["notify_details"]["status"]
+ await self.autoscaling_service.handle_alarm(alarm_uuid, status)
+ await self.alarming_service.handle_alarm(alarm_uuid, status, content)
+ await self.healing_service.handle_alarm(alarm_uuid, status)
+
+ async def _handle_instantiated(self, content):
+ log.debug("_handle_instantiated: %s", content)
+ nslcmop_id = content["nslcmop_id"]
+ nslcmop = self.db_client.get_nslcmop(nslcmop_id)
+ if (
+ nslcmop["operationState"] == "COMPLETED"
+ or nslcmop["operationState"] == "PARTIALLY_COMPLETED"
+ ):
+ nsr_id = nslcmop["nsInstanceId"]
+ log.info("Configuring nsr_id: %s", nsr_id)
+ await self.autoscaling_service.configure_scaling_groups(nsr_id)
+ await self.alarming_service.configure_vnf_alarms(nsr_id)
+ await self.healing_service.configure_healing_alarms(nsr_id)
+ else:
+ log.info(
+ "Network_service is not in COMPLETED or PARTIALLY_COMPLETED state. "
+ "Current state is %s. Skipping...",
+ nslcmop["operationState"],
+ )
+
+ async def _handle_scaled(self, content):
+ log.debug("_handle_scaled: %s", content)
+ nslcmop_id = content["nslcmop_id"]
+ nslcmop = self.db_client.get_nslcmop(nslcmop_id)
+ if (
+ nslcmop["operationState"] == "COMPLETED"
+ or nslcmop["operationState"] == "PARTIALLY_COMPLETED"
+ ):
+ nsr_id = nslcmop["nsInstanceId"]
+ log.info("Configuring scaled service with nsr_id: %s", nsr_id)
+ await self.autoscaling_service.configure_scaling_groups(nsr_id)
+ await self.autoscaling_service.delete_orphaned_alarms(nsr_id)
+ await self.alarming_service.configure_vnf_alarms(nsr_id)
+ await self.healing_service.configure_healing_alarms(nsr_id)
+ await self.healing_service.delete_orphaned_healing_alarms(nsr_id)
+ else:
+ log.debug(
+ "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
+ "Current state is %s. Skipping...",
+ nslcmop["operationState"],
+ )
+
+ async def _handle_terminated(self, content):
+ log.debug("_handle_deleted: %s", content)
+ nsr_id = content["nsr_id"]
+ if (
+ content["operationState"] == "COMPLETED"
+ or content["operationState"] == "PARTIALLY_COMPLETED"
+ ):
+ log.info(
+ "Deleting scaling groups and alarms for network autoscaling_service with nsr_id: %s",
+ nsr_id,
+ )
+ await self.autoscaling_service.delete_scaling_groups(nsr_id)
+ await self.alarming_service.delete_vnf_alarms(nsr_id)
+ await self.healing_service.delete_healing_alarms(nsr_id)
+ else:
+ log.info(
+ "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
+ "Current state is %s. Skipping...",
+ content["operationState"],
+ )
+
+ async def _handle_policy_update(self, content):
+ log.info("_handle_policy_update: %s", content)
+ nsr_id = content["nsr_id"]
+ vnf_member_index = content["vnf_member_index"]
+ if (
+ content["operationState"] == "COMPLETED"
+ or content["operationState"] == "PARTIALLY_COMPLETED"
+ ):
+ log.info(
+ "Updating policies of VNF with nsr_id: %s and vnf-member-index: %s"
+ % (nsr_id, vnf_member_index)
+ )
+ await self.autoscaling_service.delete_scaling_groups(
+ nsr_id, vnf_member_index
+ )
+ await self.alarming_service.delete_vnf_alarms(nsr_id, vnf_member_index)
+ await self.healing_service.delete_healing_alarms(nsr_id, vnf_member_index)
+ await self.autoscaling_service.configure_scaling_groups(
+ nsr_id, vnf_member_index
+ )
+ await self.alarming_service.configure_vnf_alarms(nsr_id, vnf_member_index)
+ await self.healing_service.configure_healing_alarms(
+ nsr_id, vnf_member_index
+ )
+ else:
+ log.info(
+ "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
+ "Current state is %s. Skipping...",
+ content["operationState"],
+ )
+
+ async def _handle_vnf_terminated(self, content):
+ nsr_id = content["nsr_id"]
+ vnf_member_index = content["vnf_member_index"]
+ if (
+ content["operationState"] == "COMPLETED"
+ or content["operationState"] == "PARTIALLY_COMPLETED"
+ ):
+ log.info(
+ "Deleting policies of VNF with nsr_id: %s and vnf-member-index: %s"
+ % (nsr_id, vnf_member_index)
+ )
+ await self.autoscaling_service.delete_scaling_groups(
+ nsr_id, vnf_member_index
+ )
+ await self.alarming_service.delete_vnf_alarms(nsr_id, vnf_member_index)
+ else:
+ log.info(
+ "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
+ "Current state is %s. Skipping...",
+ content["operationState"],
+ )
projects / osm / POL.git / blobdiff