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 cfg
= Config
.instance()
57 consumer
= KafkaConsumer(bootstrap_servers
=self
.kafka_server
,
58 key_deserializer
=bytes
.decode
,
59 value_deserializer
=bytes
.decode
,
60 consumer_timeout_ms
=10000)
61 consumer
.subscribe(["ns", "alarm_response"])
63 for message
in consumer
:
64 t
= threading
.Thread(target
=self
._process
_msg
, args
=(message
.topic
, message
.key
, message
.value
,))
67 def _process_msg(self
, topic
, key
, msg
):
69 # Check for ns instantiation
70 if key
== 'instantiated':
72 content
= json
.loads(msg
)
73 except JSONDecodeError
:
74 content
= yaml
.safe_load(msg
)
75 log
.info("Message arrived with topic: %s, key: %s, msg: %s", topic
, key
, content
)
76 nslcmop_id
= content
['nslcmop_id']
77 nslcmop
= self
.common_db
.get_one(table
="nslcmops",
78 filter={"_id": nslcmop_id
})
79 if nslcmop
['operationState'] == 'COMPLETED' or nslcmop
['operationState'] == 'PARTIALLY_COMPLETED':
80 nsr_id
= nslcmop
['nsInstanceId']
81 log
.info("Configuring scaling groups for network service with nsr_id: %s", nsr_id
)
82 self
._configure
_scaling
_groups
(nsr_id
)
85 "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
86 "Current state is %s. Skipping...",
87 nslcmop
['operationState'])
89 if key
== 'notify_alarm':
91 content
= json
.loads(msg
)
92 except JSONDecodeError
:
93 content
= yaml
.safe_load(msg
)
94 log
.info("Message arrived with topic: %s, key: %s, msg: %s", topic
, key
, content
)
95 alarm_id
= content
['notify_details']['alarm_uuid']
96 metric_name
= content
['notify_details']['metric_name']
97 operation
= content
['notify_details']['operation']
98 threshold
= content
['notify_details']['threshold_value']
99 vdu_name
= content
['notify_details']['vdu_name']
100 vnf_member_index
= content
['notify_details']['vnf_member_index']
101 ns_id
= content
['notify_details']['ns_id']
103 "Received alarm notification for alarm %s, \
108 vnf_member_index %s, \
110 alarm_id
, metric_name
, operation
, threshold
, vdu_name
, vnf_member_index
, ns_id
)
112 alarm
= ScalingAlarm
.select().where(ScalingAlarm
.alarm_id
== alarm_id
).get()
113 lcm_client
= LcmClient()
114 log
.info("Sending scaling action message for ns: %s", alarm_id
)
115 lcm_client
.scale(alarm
.scaling_record
.nsr_id
, alarm
.scaling_record
.name
, alarm
.vnf_member_index
,
117 except ScalingAlarm
.DoesNotExist
:
118 log
.info("There is no action configured for alarm %s.", alarm_id
)
120 log
.exception("Error consuming message: ")
122 def _get_vnfr(self
, nsr_id
: str, member_index
: int):
123 vnfr
= self
.common_db
.get_one(table
="vnfrs",
124 filter={"nsr-id-ref": nsr_id
, "member-vnf-index-ref": str(member_index
)})
127 def _get_vnfrs(self
, nsr_id
: str):
128 return [self
._get
_vnfr
(nsr_id
, member
['member-vnf-index']) for member
in
129 self
._get
_nsr
(nsr_id
)['nsd']['constituent-vnfd']]
131 def _get_vnfd(self
, vnfd_id
: str):
132 vnfr
= self
.common_db
.get_one(table
="vnfds",
133 filter={"_id": vnfd_id
})
136 def _get_nsr(self
, nsr_id
: str):
137 nsr
= self
.common_db
.get_one(table
="nsrs",
138 filter={"id": nsr_id
})
141 def _configure_scaling_groups(self
, nsr_id
: str):
142 # TODO(diazb): Check for alarm creation on exception and clean resources if needed.
143 with database
.db
.atomic():
144 vnfrs
= self
._get
_vnfrs
(nsr_id
)
145 log
.info("Checking %s vnfrs...", len(vnfrs
))
147 vnfd
= self
._get
_vnfd
(vnfr
['vnfd-id'])
148 log
.info("Looking for vnfd %s", vnfr
['vnfd-id'])
149 scaling_groups
= vnfd
['scaling-group-descriptor']
150 vnf_monitoring_params
= vnfd
['monitoring-param']
151 for scaling_group
in scaling_groups
:
152 log
.info("Creating scaling record in DB...")
153 scaling_record
= ScalingRecord
.create(
155 name
=scaling_group
['name'],
156 content
=json
.dumps(scaling_group
)
158 log
.info("Created scaling record in DB : nsr_id=%s, name=%s, content=%s",
159 scaling_record
.nsr_id
,
161 scaling_record
.content
)
162 for scaling_policy
in scaling_group
['scaling-policy']:
163 for vdur
in vnfd
['vdu']:
164 vdu_monitoring_params
= vdur
['monitoring-param']
165 for scaling_criteria
in scaling_policy
['scaling-criteria']:
166 vnf_monitoring_param
= next(
167 filter(lambda param
: param
['id'] == scaling_criteria
['vnf-monitoring-param-ref'],
168 vnf_monitoring_params
))
169 # TODO: Add support for non-nfvi metrics
170 vdu_monitoring_param
= next(
172 lambda param
: param
['id'] == vnf_monitoring_param
['vdu-monitoring-param-ref'],
173 vdu_monitoring_params
))
174 alarm_uuid
= self
.mon_client
.create_alarm(
175 metric_name
=vdu_monitoring_param
['nfvi-metric'],
177 vdu_name
=vdur
['name'],
178 vnf_member_index
=vnfr
['member-vnf-index-ref'],
179 threshold
=scaling_criteria
['scale-in-threshold'],
180 operation
=scaling_criteria
['scale-in-relational-operation'],
181 statistic
=vnf_monitoring_param
['aggregation-type']
186 vnf_member_index
=int(vnfr
['member-vnf-index-ref']),
187 vdu_name
=vdur
['name'],
188 scaling_record
=scaling_record
190 alarm_uuid
= self
.mon_client
.create_alarm(
191 metric_name
=vdu_monitoring_param
['nfvi-metric'],
193 vdu_name
=vdur
['name'],
194 vnf_member_index
=vnfr
['member-vnf-index-ref'],
195 threshold
=scaling_criteria
['scale-out-threshold'],
196 operation
=scaling_criteria
['scale-out-relational-operation'],
197 statistic
=vnf_monitoring_param
['aggregation-type']
202 vnf_member_index
=int(vnfr
['member-vnf-index-ref']),
203 vdu_name
=vdur
['name'],
204 scaling_record
=scaling_record