osm_mon/collector/vnf_collectors/juju.py

   1 # Copyright 2018 Whitestack, LLC
   2 # *************************************************************
   3
   4 # This file is part of OSM Monitoring module
   5 # All Rights Reserved to Whitestack, LLC
   6
   7 # Licensed under the Apache License, Version 2.0 (the "License"); you may
   8 # not use this file except in compliance with the License. You may obtain
   9 # a copy of the License at
  10
  11 #         http://www.apache.org/licenses/LICENSE-2.0
  12
  13 # Unless required by applicable law or agreed to in writing, software
  14 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  15 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  16 # License for the specific language governing permissions and limitations
  17 # under the License.
  18
  19 # For those usages not covered by the Apache License, Version 2.0 please
  20 # contact: bdiaz@whitestack.com or glavado@whitestack.com
  21 ##
  22 import asyncio
  23 import logging
  24 from typing import List
  25
  26 from n2vc.vnf import N2VC
  27
  28 from osm_mon.collector.metric import Metric
  29 from osm_mon.collector.vnf_collectors.base import BaseCollector
  30 from osm_mon.collector.vnf_metric import VnfMetric
  31 from osm_mon.core.common_db import CommonDbClient
  32 from osm_mon.core.config import Config
  33 from osm_mon.core.exceptions import VcaDeploymentInfoNotFound
  34
  35 log = logging.getLogger(__name__)
  36
  37
  38 class VCACollector(BaseCollector):
  39     def __init__(self, config: Config):
  40         super().__init__(config)
  41         self.common_db = CommonDbClient(config)
  42         self.loop = asyncio.get_event_loop()
  43         self.n2vc = N2VC(server=config.get('vca', 'host'), user=config.get('vca', 'user'),
  44                          secret=config.get('vca', 'secret'))
  45
  46     def collect(self, vnfr: dict) -> List[Metric]:
  47         nsr_id = vnfr['nsr-id-ref']
  48         vnf_member_index = vnfr['member-vnf-index-ref']
  49         vnfd = self.common_db.get_vnfd(vnfr['vnfd-id'])
  50         metrics = []
  51         for vdur in vnfr['vdur']:
  52             # This avoids errors when vdur records have not been completely filled
  53             if 'name' not in vdur:
  54                 continue
  55             vdu = next(
  56                 filter(lambda vdu: vdu['id'] == vdur['vdu-id-ref'], vnfd['vdu'])
  57             )
  58             if 'vdu-configuration' in vdu and 'metrics' in vdu['vdu-configuration']:
  59                 try:
  60                     vca_deployment_info = self.get_vca_deployment_info(nsr_id, vnf_member_index, vdur['name'])
  61                 except VcaDeploymentInfoNotFound:
  62                     continue
  63                 measures = self.loop.run_until_complete(self.n2vc.GetMetrics(vca_deployment_info['model'],
  64                                                                              vca_deployment_info['application']))
  65                 log.debug('Measures: %s', measures)
  66                 for measure_list in measures.values():
  67                     for measure in measure_list:
  68                         log.debug("Measure: %s", measure)
  69                         metric = VnfMetric(nsr_id, vnf_member_index, vdur['name'], measure['key'],
  70                                            float(measure['value']))
  71                         metrics.append(metric)
  72         if 'vnf-configuration' in vnfd and 'metrics' in vnfd['vnf-configuration']:
  73             try:
  74                 vca_deployment_info = self.get_vca_deployment_info(nsr_id, vnf_member_index, None)
  75             except VcaDeploymentInfoNotFound:
  76                 return metrics
  77             measures = self.loop.run_until_complete(self.n2vc.GetMetrics(vca_deployment_info['model'],
  78                                                                          vca_deployment_info['application']))
  79             log.debug('Measures: %s', measures)
  80             for measure_list in measures.values():
  81                 for measure in measure_list:
  82                     log.debug("Measure: %s", measure)
  83                     metric = VnfMetric(nsr_id, vnf_member_index, '', measure['key'], float(measure['value']))
  84                     metrics.append(metric)
  85         return metrics
  86
  87     def get_vca_deployment_info(self, nsr_id, vnf_member_index, vdur_name):
  88         nsr = self.common_db.get_nsr(nsr_id)
  89         for vca_deployment in nsr["_admin"]["deployed"]["VCA"]:
  90             if vca_deployment:
  91                 if vca_deployment['member-vnf-index'] == vnf_member_index and vca_deployment['vdu_name'] == vdur_name:
  92                     return vca_deployment
  93         raise VcaDeploymentInfoNotFound("VCA deployment info for nsr_id {}, index {} and vdur_name {} not found."
  94                                         .format(nsr_id, vnf_member_index, vdur_name))