# For those usages not covered by the Apache License, Version 2.0 please
# contact: bdiaz@whitestack.com or glavado@whitestack.com
##
+import asyncio
+import datetime
import json
import logging
-import threading
-from json import JSONDecodeError
-import yaml
-from kafka import KafkaConsumer
-from osm_common import dbmongo
+import peewee
+from osm_policy_module.common.common_db_client import CommonDbClient
from osm_policy_module.common.lcm_client import LcmClient
+from osm_policy_module.common.message_bus_client import MessageBusClient
from osm_policy_module.common.mon_client import MonClient
from osm_policy_module.core import database
from osm_policy_module.core.config import Config
-from osm_policy_module.core.database import ScalingRecord, ScalingAlarm
+from osm_policy_module.core.database import ScalingGroup, ScalingAlarm, ScalingPolicy, ScalingCriteria, DatabaseManager
+from osm_policy_module.core.exceptions import VdurNotFound
+from osm_policy_module.utils.vnfd import VnfdUtils
log = logging.getLogger(__name__)
+ALLOWED_KAFKA_KEYS = ['instantiated', 'scaled', 'terminated', 'notify_alarm']
+
class PolicyModuleAgent:
- def __init__(self):
- cfg = Config.instance()
- self.common_db = dbmongo.DbMongo()
- self.common_db.db_connect({'host': cfg.OSMPOL_DATABASE_HOST,
- 'port': int(cfg.OSMPOL_DATABASE_PORT),
- 'name': 'osm'})
- self.mon_client = MonClient()
- self.kafka_server = '{}:{}'.format(cfg.OSMPOL_MESSAGE_HOST,
- cfg.OSMPOL_MESSAGE_PORT)
+ def __init__(self, config: Config, loop=None):
+ self.conf = config
+ if not loop:
+ loop = asyncio.get_event_loop()
+ self.loop = loop
+ self.db_client = CommonDbClient(config)
+ self.mon_client = MonClient(config, loop=self.loop)
+ self.lcm_client = LcmClient(config, loop=self.loop)
+ self.database_manager = DatabaseManager(config)
+ self.msg_bus = MessageBusClient(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"])
+ self.loop.run_until_complete(self.start())
- for message in consumer:
- t = threading.Thread(target=self._process_msg, args=(message.topic, message.key, message.value,))
- t.start()
+ async def start(self):
+ topics = [
+ "ns",
+ "alarm_response"
+ ]
+ await self.msg_bus.aioread(topics, self._process_msg)
+ log.critical("Exiting...")
- def _process_msg(self, topic, key, msg):
+ async def _process_msg(self, topic, key, msg):
+ log.debug("_process_msg topic=%s key=%s msg=%s", topic, key, msg)
+ log.info("Message arrived: %s", 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.common_db.get_one(table="nslcmops",
- filter={"_id": 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 in ALLOWED_KAFKA_KEYS:
+
+ if key == 'instantiated':
+ await self._handle_instantiated(msg)
+
+ if key == 'scaled':
+ await self._handle_scaled(msg)
+
+ if key == 'terminated':
+ await self._handle_terminated(msg)
+
+ if key == 'notify_alarm':
+ await self._handle_alarm_notification(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 _get_vnfr(self, nsr_id: str, member_index: int):
- vnfr = self.common_db.get_one(table="vnfrs",
- filter={"nsr-id-ref": nsr_id, "member-vnf-index-ref": str(member_index)})
- return vnfr
-
- def _get_vnfrs(self, nsr_id: str):
- return [self._get_vnfr(nsr_id, member['member-vnf-index']) for member in
- self._get_nsr(nsr_id)['nsd']['constituent-vnfd']]
-
- def _get_vnfd(self, vnfd_id: str):
- vnfr = self.common_db.get_one(table="vnfds",
- filter={"_id": vnfd_id})
- return vnfr
-
- def _get_nsr(self, nsr_id: str):
- nsr = self.common_db.get_one(table="nsrs",
- filter={"id": nsr_id})
- return nsr
-
- 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._get_vnfrs(nsr_id)
- log.info("Checking %s vnfrs...", len(vnfrs))
- for vnfr in vnfrs:
- vnfd = self._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']
+ async def _handle_alarm_notification(self, content):
+ log.debug("_handle_alarm_notification: %s", content)
+ alarm_uuid = 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']
+ nsr_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_uuid, metric_name, operation, threshold, vdu_name, vnf_member_index, nsr_id)
+ try:
+ alarm = self.database_manager.get_alarm(alarm_uuid)
+ delta = datetime.datetime.now() - alarm.scaling_criteria.scaling_policy.last_scale
+ log.debug("last_scale: %s", alarm.scaling_criteria.scaling_policy.last_scale)
+ log.debug("now: %s", datetime.datetime.now())
+ log.debug("delta: %s", delta)
+ if delta.total_seconds() < alarm.scaling_criteria.scaling_policy.cooldown_time:
+ log.info("Time between last scale and now is less than cooldown time. Skipping.")
+ return
+ log.info("Sending scaling action message for ns: %s", nsr_id)
+ await self.lcm_client.scale(nsr_id,
+ alarm.scaling_criteria.scaling_policy.scaling_group.name,
+ alarm.vnf_member_index,
+ alarm.action)
+ alarm.scaling_criteria.scaling_policy.last_scale = datetime.datetime.now()
+ alarm.scaling_criteria.scaling_policy.save()
+ except ScalingAlarm.DoesNotExist:
+ log.info("There is no action configured for alarm %s.", alarm_uuid)
+
+ 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 scaling groups for network service with nsr_id: %s", nsr_id)
+ await 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'])
+
+ 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 scaling groups for network service with nsr_id: %s", nsr_id)
+ await self._configure_scaling_groups(nsr_id)
+ log.info("Checking for orphaned alarms to be deleted for network service with nsr_id: %s", nsr_id)
+ await self._delete_orphaned_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_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 service with nsr_id: %s", nsr_id)
+ await self._delete_scaling_groups(nsr_id)
+ else:
+ log.info(
+ "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
+ "Current state is %s. Skipping...",
+ content['operationState'])
+
+ async def _configure_scaling_groups(self, nsr_id: str):
+ log.debug("_configure_scaling_groups: %s", nsr_id)
+ alarms_created = []
+ with database.db.atomic() as tx:
+ try:
+ vnfrs = self.db_client.get_vnfrs(nsr_id)
+ for vnfr in vnfrs:
+ log.info("Processing vnfr: %s", vnfr)
+ vnfd = self.db_client.get_vnfd(vnfr['vnfd-id'])
+ log.info("Looking for vnfd %s", vnfr['vnfd-id'])
+ if 'scaling-group-descriptor' not in vnfd:
+ continue
+ scaling_groups = vnfd['scaling-group-descriptor']
+ vnf_monitoring_params = vnfd['monitoring-param']
+ for scaling_group in scaling_groups:
+ try:
+ scaling_group_record = ScalingGroup.select().where(
+ ScalingGroup.nsr_id == nsr_id,
+ ScalingGroup.vnf_member_index == int(vnfr['member-vnf-index-ref']),
+ ScalingGroup.name == scaling_group['name']
+ ).get()
+ log.info("Found existing scaling group record in DB...")
+ except ScalingGroup.DoesNotExist:
+ log.info("Creating scaling group record in DB...")
+ scaling_group_record = ScalingGroup.create(
+ nsr_id=nsr_id,
+ vnf_member_index=vnfr['member-vnf-index-ref'],
+ name=scaling_group['name'],
+ content=json.dumps(scaling_group)
+ )
+ log.info(
+ "Created scaling group record in DB : nsr_id=%s, vnf_member_index=%s, name=%s",
+ scaling_group_record.nsr_id,
+ scaling_group_record.vnf_member_index,
+ scaling_group_record.name)
+ for scaling_policy in scaling_group['scaling-policy']:
+ if scaling_policy['scaling-type'] != 'automatic':
+ continue
+ try:
+ scaling_policy_record = ScalingPolicy.select().join(ScalingGroup).where(
+ ScalingPolicy.name == scaling_policy['name'],
+ ScalingGroup.id == scaling_group_record.id
+ ).get()
+ log.info("Found existing scaling policy record in DB...")
+ except ScalingPolicy.DoesNotExist:
+ log.info("Creating scaling policy record in DB...")
+ scaling_policy_record = ScalingPolicy.create(
+ nsr_id=nsr_id,
+ name=scaling_policy['name'],
+ cooldown_time=scaling_policy['cooldown-time'],
+ scaling_group=scaling_group_record
+ )
+ log.info("Created scaling policy record in DB : name=%s, scaling_group.name=%s",
+ scaling_policy_record.name,
+ scaling_policy_record.scaling_group.name)
+
for scaling_criteria in scaling_policy['scaling-criteria']:
+ try:
+ scaling_criteria_record = ScalingCriteria.select().join(ScalingPolicy).where(
+ ScalingPolicy.id == scaling_policy_record.id,
+ ScalingCriteria.name == scaling_criteria['name']
+ ).get()
+ log.info("Found existing scaling criteria record in DB...")
+ except ScalingCriteria.DoesNotExist:
+ log.info("Creating scaling criteria record in DB...")
+ scaling_criteria_record = ScalingCriteria.create(
+ nsr_id=nsr_id,
+ name=scaling_criteria['name'],
+ scaling_policy=scaling_policy_record
+ )
+ log.info(
+ "Created scaling criteria record in DB : name=%s, scaling_policy.name=%s",
+ scaling_criteria_record.name,
+ scaling_criteria_record.scaling_policy.name)
+
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
+ lambda param: param['id'] == scaling_criteria[
+ 'vnf-monitoring-param-ref'
+ ],
+ vnf_monitoring_params)
)
+ if 'vdu-monitoring-param' in vnf_monitoring_param:
+ vdurs = list(
+ filter(
+ lambda vdur: vdur['vdu-id-ref'] == vnf_monitoring_param
+ ['vdu-monitoring-param']
+ ['vdu-ref'],
+ vnfr['vdur']
+ )
+ )
+ elif 'vdu-metric' in vnf_monitoring_param:
+ vdurs = list(
+ filter(
+ lambda vdur: vdur['vdu-id-ref'] == vnf_monitoring_param
+ ['vdu-metric']
+ ['vdu-ref'],
+ vnfr['vdur']
+ )
+ )
+ elif 'vnf-metric' in vnf_monitoring_param:
+ vdu = VnfdUtils.get_mgmt_vdu(vnfd)
+ vdurs = list(
+ filter(
+ lambda vdur: vdur['vdu-id-ref'] == vdu['id'],
+ vnfr['vdur']
+ )
+ )
+ else:
+ log.warning(
+ "Scaling criteria is referring to a vnf-monitoring-param that does not "
+ "contain a reference to a vdu or vnf metric.")
+ continue
+ for vdur in vdurs:
+ log.info("Creating alarm for vdur %s ", vdur)
+ try:
+ (ScalingAlarm.select()
+ .join(ScalingCriteria)
+ .join(ScalingPolicy)
+ .join(ScalingGroup)
+ .where(
+ ScalingAlarm.vdu_name == vdur['name'],
+ ScalingCriteria.name == scaling_criteria['name'],
+ ScalingPolicy.name == scaling_policy['name'],
+ ScalingGroup.nsr_id == nsr_id
+ ).get())
+ log.debug("vdu %s already has an alarm configured", vdur['name'])
+ continue
+ except ScalingAlarm.DoesNotExist:
+ pass
+ alarm_uuid = await self.mon_client.create_alarm(
+ metric_name=vnf_monitoring_param['id'],
+ 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']
+ )
+ alarm = ScalingAlarm.create(
+ alarm_uuid=alarm_uuid,
+ action='scale_in',
+ vnf_member_index=int(vnfr['member-vnf-index-ref']),
+ vdu_name=vdur['name'],
+ scaling_criteria=scaling_criteria_record
+ )
+ alarms_created.append(alarm)
+ alarm_uuid = await self.mon_client.create_alarm(
+ metric_name=vnf_monitoring_param['id'],
+ 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']
+ )
+ alarm = ScalingAlarm.create(
+ alarm_uuid=alarm_uuid,
+ action='scale_out',
+ vnf_member_index=int(vnfr['member-vnf-index-ref']),
+ vdu_name=vdur['name'],
+ scaling_criteria=scaling_criteria_record
+ )
+ alarms_created.append(alarm)
+
+ except Exception as e:
+ log.exception("Error configuring scaling groups:")
+ tx.rollback()
+ if len(alarms_created) > 0:
+ log.info("Cleaning alarm resources in MON")
+ for alarm in alarms_created:
+ await self.mon_client.delete_alarm(alarm.scaling_criteria.scaling_policy.scaling_group.nsr_id,
+ alarm.vnf_member_index,
+ alarm.vdu_name,
+ alarm.alarm_uuid)
+ raise e
+
+ async def _delete_scaling_groups(self, nsr_id: str):
+ with database.db.atomic() as tx:
+ try:
+ for scaling_group in ScalingGroup.select().where(ScalingGroup.nsr_id == nsr_id):
+ for scaling_policy in scaling_group.scaling_policies:
+ for scaling_criteria in scaling_policy.scaling_criterias:
+ for alarm in scaling_criteria.scaling_alarms:
+ try:
+ await self.mon_client.delete_alarm(
+ alarm.scaling_criteria.scaling_policy.scaling_group.nsr_id,
+ alarm.vnf_member_index,
+ alarm.vdu_name,
+ alarm.alarm_uuid)
+ except ValueError:
+ log.exception("Error deleting alarm in MON %s", alarm.alarm_uuid)
+ alarm.delete_instance()
+ scaling_criteria.delete_instance()
+ scaling_policy.delete_instance()
+ scaling_group.delete_instance()
+
+ except Exception as e:
+ log.exception("Error deleting scaling groups and alarms:")
+ tx.rollback()
+ raise e
+
+ async def _delete_orphaned_alarms(self, nsr_id):
+ with database.db.atomic() as tx:
+ try:
+ for scaling_group in ScalingGroup.select().where(ScalingGroup.nsr_id == nsr_id):
+ for scaling_policy in scaling_group.scaling_policies:
+ for scaling_criteria in scaling_policy.scaling_criterias:
+ for alarm in scaling_criteria.scaling_alarms:
+ try:
+ self.db_client.get_vdur(nsr_id, alarm.vnf_member_index, alarm.vdu_name)
+ except VdurNotFound:
+ log.info("Deleting orphaned alarm %s", alarm.alarm_uuid)
+ try:
+ await self.mon_client.delete_alarm(
+ alarm.scaling_criteria.scaling_policy.scaling_group.nsr_id,
+ alarm.vnf_member_index,
+ alarm.vdu_name,
+ alarm.alarm_uuid)
+ except ValueError:
+ log.exception("Error deleting alarm in MON %s", alarm.alarm_uuid)
+ alarm.delete_instance()
+
+ except Exception as e:
+ log.exception("Error deleting orphaned alarms:")
+ tx.rollback()
+ raise e
projects / osm / POL.git / blobdiff