# For those usages not covered by the Apache License, Version 2.0 please
# contact: bdiaz@whitestack.com or glavado@whitestack.com
##
+import datetime
import json
import logging
import threading
import yaml
from kafka import KafkaConsumer
-from osm_common import dbmongo
+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.core.config import Config
-from osm_policy_module.core.database import ScalingRecord, ScalingAlarm
+from osm_policy_module.core.database import ScalingGroup, ScalingAlarm, ScalingPolicy, ScalingCriteria
log = logging.getLogger(__name__)
+ALLOWED_KAFKA_KEYS = ['instantiated', 'scaled', '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.db_client = DbClient()
self.mon_client = MonClient()
+ self.lcm_client = LcmClient()
self.kafka_server = '{}:{}'.format(cfg.OSMPOL_MESSAGE_HOST,
cfg.OSMPOL_MESSAGE_PORT)
def run(self):
- cfg = Config.instance()
- cfg.read_environ()
-
consumer = KafkaConsumer(bootstrap_servers=self.kafka_server,
key_deserializer=bytes.decode,
value_deserializer=bytes.decode,
- consumer_timeout_ms=10000)
+ group_id='pol-consumer')
consumer.subscribe(["ns", "alarm_response"])
for message in consumer:
t.start()
def _process_msg(self, topic, key, msg):
+ log.debug("_process_msg topic=%s key=%s msg=%s", topic, key, msg)
try:
- # Check for ns instantiation
- if key == 'instantiated':
+ if key in ALLOWED_KAFKA_KEYS:
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)
- 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
+ if key == 'instantiated' or key == 'scaled':
+ self._handle_instantiated_or_scaled(content)
- 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']]
+ if key == 'notify_alarm':
+ self._handle_alarm_notification(content)
+ else:
+ log.debug("Key %s is not in ALLOWED_KAFKA_KEYS", key)
+ except Exception:
+ log.exception("Error consuming message: ")
- def _get_vnfd(self, vnfd_id: str):
- vnfr = self.common_db.get_one(table="vnfds",
- filter={"_id": vnfd_id})
- return vnfr
+ def _handle_alarm_notification(self, content):
+ log.debug("_handle_alarm_notification: %s", 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()
+ 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", alarm_id)
+ self.lcm_client.scale(alarm.scaling_criteria.scaling_policy.scaling_group.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_id)
- def _get_nsr(self, nsr_id: str):
- nsr = self.common_db.get_one(table="nsrs",
- filter={"id": nsr_id})
- return nsr
+ def _handle_instantiated_or_scaled(self, content):
+ log.debug("_handle_instantiated_or_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)
+ 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'])
def _configure_scaling_groups(self, nsr_id: str):
+ log.debug("_configure_scaling_groups: %s", nsr_id)
# TODO(diazb): Check for alarm creation on exception and clean resources if needed.
+ # TODO: Add support for non-nfvi metrics
with database.db.atomic():
- vnfrs = self._get_vnfrs(nsr_id)
- log.info("Checking %s vnfrs...", len(vnfrs))
+ vnfrs = self.db_client.get_vnfrs(nsr_id)
+ log.info("Found %s vnfrs", len(vnfrs))
for vnfr in vnfrs:
- vnfd = self._get_vnfd(vnfr['vnfd-id'])
+ 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)
+ try:
+ scaling_group_record = ScalingGroup.select().where(
+ ScalingGroup.nsr_id == nsr_id,
+ ScalingGroup.vnf_member_index == 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=%d, name=%s, content=%s",
+ scaling_group_record.nsr_id,
+ scaling_group_record.vnf_member_index,
+ scaling_group_record.name,
+ scaling_group_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']:
+ 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)
+
+ for vdu_ref in scaling_group['vdu']:
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
+ if not vdu_ref['vdu-id-ref'] == vnf_monitoring_param['vdu-ref']:
+ continue
+ vdu = next(
+ filter(lambda vdu: vdu['id'] == vdu_ref['vdu-id-ref'], vnfd['vdu'])
+ )
+ vdu_monitoring_params = vdu['monitoring-param']
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
- )
+ vdurs = list(filter(lambda vdur: vdur['vdu-id-ref'] == vnf_monitoring_param['vdu-ref'],
+ vnfr['vdur']))
+ for vdur in vdurs:
+ try:
+ ScalingAlarm.select().join(ScalingCriteria).where(
+ ScalingAlarm.vdu_name == vdur['name'],
+ ScalingCriteria.name == scaling_criteria['name']
+ ).get()
+ log.debug("vdu %s already has an alarm configured", vdur['name'])
+ continue
+ except ScalingAlarm.DoesNotExist:
+ pass
+ 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_criteria=scaling_criteria_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_criteria=scaling_criteria_record
+ )
projects / osm / POL.git / commitdiff