1 # -*- coding: utf-8 -*-
3 # Copyright 2018 Whitestack, LLC
4 # *************************************************************
6 # This file is part of OSM Monitoring module
7 # All Rights Reserved to Whitestack, LLC
9 # Licensed under the Apache License, Version 2.0 (the "License"); you may
10 # not use this file except in compliance with the License. You may obtain
11 # a copy of the License at
13 # http://www.apache.org/licenses/LICENSE-2.0
15 # Unless required by applicable law or agreed to in writing, software
16 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
17 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
18 # License for the specific language governing permissions and limitations
21 # For those usages not covered by the Apache License, Version 2.0 please
22 # contact: bdiaz@whitestack.com or glavado@whitestack.com
27 from json
import JSONDecodeError
30 from kafka
import KafkaConsumer
31 from osm_common
import dbmongo
33 from osm_policy_module
.common
.lcm_client
import LcmClient
34 from osm_policy_module
.common
.mon_client
import MonClient
35 from osm_policy_module
.core
import database
36 from osm_policy_module
.core
.config
import Config
37 from osm_policy_module
.core
.database
import ScalingRecord
, ScalingAlarm
39 log
= logging
.getLogger(__name__
)
42 class PolicyModuleAgent
:
44 cfg
= Config
.instance()
45 self
.common_db
= dbmongo
.DbMongo()
46 self
.common_db
.db_connect({'host': cfg
.OSMPOL_DATABASE_HOST
,
47 'port': int(cfg
.OSMPOL_DATABASE_PORT
),
49 self
.mon_client
= MonClient()
50 self
.kafka_server
= '{}:{}'.format(cfg
.OSMPOL_MESSAGE_HOST
,
51 cfg
.OSMPOL_MESSAGE_PORT
)
54 consumer
= KafkaConsumer(bootstrap_servers
=self
.kafka_server
,
55 key_deserializer
=bytes
.decode
,
56 value_deserializer
=bytes
.decode
,
57 group_id
='pol-consumer')
58 consumer
.subscribe(["ns", "alarm_response"])
60 for message
in consumer
:
61 t
= threading
.Thread(target
=self
._process
_msg
, args
=(message
.topic
, message
.key
, message
.value
,))
64 def _process_msg(self
, topic
, key
, msg
):
66 # Check for ns instantiation
67 if key
== 'instantiated':
69 content
= json
.loads(msg
)
70 except JSONDecodeError
:
71 content
= yaml
.safe_load(msg
)
72 log
.info("Message arrived with topic: %s, key: %s, msg: %s", topic
, key
, content
)
73 nslcmop_id
= content
['nslcmop_id']
74 nslcmop
= self
.common_db
.get_one(table
="nslcmops",
75 filter={"_id": nslcmop_id
})
76 if nslcmop
['operationState'] == 'COMPLETED' or nslcmop
['operationState'] == 'PARTIALLY_COMPLETED':
77 nsr_id
= nslcmop
['nsInstanceId']
78 log
.info("Configuring scaling groups for network service with nsr_id: %s", nsr_id
)
79 self
._configure
_scaling
_groups
(nsr_id
)
82 "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
83 "Current state is %s. Skipping...",
84 nslcmop
['operationState'])
86 if key
== 'notify_alarm':
88 content
= json
.loads(msg
)
89 except JSONDecodeError
:
90 content
= yaml
.safe_load(msg
)
91 log
.info("Message arrived with topic: %s, key: %s, msg: %s", topic
, key
, content
)
92 alarm_id
= content
['notify_details']['alarm_uuid']
93 metric_name
= content
['notify_details']['metric_name']
94 operation
= content
['notify_details']['operation']
95 threshold
= content
['notify_details']['threshold_value']
96 vdu_name
= content
['notify_details']['vdu_name']
97 vnf_member_index
= content
['notify_details']['vnf_member_index']
98 ns_id
= content
['notify_details']['ns_id']
100 "Received alarm notification for alarm %s, \
105 vnf_member_index %s, \
107 alarm_id
, metric_name
, operation
, threshold
, vdu_name
, vnf_member_index
, ns_id
)
109 alarm
= ScalingAlarm
.select().where(ScalingAlarm
.alarm_id
== alarm_id
).get()
110 lcm_client
= LcmClient()
111 log
.info("Sending scaling action message for ns: %s", alarm_id
)
112 lcm_client
.scale(alarm
.scaling_record
.nsr_id
, alarm
.scaling_record
.name
, alarm
.vnf_member_index
,
114 except ScalingAlarm
.DoesNotExist
:
115 log
.info("There is no action configured for alarm %s.", alarm_id
)
117 log
.exception("Error consuming message: ")
119 def _get_vnfr(self
, nsr_id
: str, member_index
: int):
120 vnfr
= self
.common_db
.get_one(table
="vnfrs",
121 filter={"nsr-id-ref": nsr_id
, "member-vnf-index-ref": str(member_index
)})
124 def _get_vnfrs(self
, nsr_id
: str):
125 return [self
._get
_vnfr
(nsr_id
, member
['member-vnf-index']) for member
in
126 self
._get
_nsr
(nsr_id
)['nsd']['constituent-vnfd']]
128 def _get_vnfd(self
, vnfd_id
: str):
129 vnfr
= self
.common_db
.get_one(table
="vnfds",
130 filter={"_id": vnfd_id
})
133 def _get_nsr(self
, nsr_id
: str):
134 nsr
= self
.common_db
.get_one(table
="nsrs",
135 filter={"id": nsr_id
})
138 def _configure_scaling_groups(self
, nsr_id
: str):
139 # TODO(diazb): Check for alarm creation on exception and clean resources if needed.
140 with database
.db
.atomic():
141 vnfrs
= self
._get
_vnfrs
(nsr_id
)
142 log
.info("Checking %s vnfrs...", len(vnfrs
))
144 vnfd
= self
._get
_vnfd
(vnfr
['vnfd-id'])
145 log
.info("Looking for vnfd %s", vnfr
['vnfd-id'])
146 scaling_groups
= vnfd
['scaling-group-descriptor']
147 vnf_monitoring_params
= vnfd
['monitoring-param']
148 for scaling_group
in scaling_groups
:
149 log
.info("Creating scaling record in DB...")
150 scaling_record
= ScalingRecord
.create(
152 name
=scaling_group
['name'],
153 content
=json
.dumps(scaling_group
)
155 log
.info("Created scaling record in DB : nsr_id=%s, name=%s, content=%s",
156 scaling_record
.nsr_id
,
158 scaling_record
.content
)
159 for scaling_policy
in scaling_group
['scaling-policy']:
160 for vdur
in vnfd
['vdu']:
161 vdu_monitoring_params
= vdur
['monitoring-param']
162 for scaling_criteria
in scaling_policy
['scaling-criteria']:
163 vnf_monitoring_param
= next(
164 filter(lambda param
: param
['id'] == scaling_criteria
['vnf-monitoring-param-ref'],
165 vnf_monitoring_params
))
166 # TODO: Add support for non-nfvi metrics
167 vdu_monitoring_param
= next(
169 lambda param
: param
['id'] == vnf_monitoring_param
['vdu-monitoring-param-ref'],
170 vdu_monitoring_params
))
171 alarm_uuid
= self
.mon_client
.create_alarm(
172 metric_name
=vdu_monitoring_param
['nfvi-metric'],
174 vdu_name
=vdur
['name'],
175 vnf_member_index
=vnfr
['member-vnf-index-ref'],
176 threshold
=scaling_criteria
['scale-in-threshold'],
177 operation
=scaling_criteria
['scale-in-relational-operation'],
178 statistic
=vnf_monitoring_param
['aggregation-type']
183 vnf_member_index
=int(vnfr
['member-vnf-index-ref']),
184 vdu_name
=vdur
['name'],
185 scaling_record
=scaling_record
187 alarm_uuid
= self
.mon_client
.create_alarm(
188 metric_name
=vdu_monitoring_param
['nfvi-metric'],
190 vdu_name
=vdur
['name'],
191 vnf_member_index
=vnfr
['member-vnf-index-ref'],
192 threshold
=scaling_criteria
['scale-out-threshold'],
193 operation
=scaling_criteria
['scale-out-relational-operation'],
194 statistic
=vnf_monitoring_param
['aggregation-type']
199 vnf_member_index
=int(vnfr
['member-vnf-index-ref']),
200 vdu_name
=vdur
['name'],
201 scaling_record
=scaling_record