osm_mon/collector/vnf_collectors/openstack.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 datetime
  23 import json
  24 import logging
  25 from typing import List
  26
  27 import gnocchiclient.exceptions
  28 from gnocchiclient.v1 import client as gnocchi_client
  29 from keystoneauth1 import session
  30 from keystoneauth1.identity import v3
  31
  32 from osm_mon.collector.metric import Metric
  33 from osm_mon.collector.vnf_collectors.base_vim import BaseVimCollector
  34 from osm_mon.collector.vnf_metric import VnfMetric
  35 from osm_mon.core.auth import AuthManager
  36 from osm_mon.core.common_db import CommonDbClient
  37 from osm_mon.core.settings import Config
  38
  39 log = logging.getLogger(__name__)
  40
  41 METRIC_MAPPINGS = {
  42     "average_memory_utilization": "memory.usage",
  43     "disk_read_ops": "disk.read.requests",
  44     "disk_write_ops": "disk.write.requests",
  45     "disk_read_bytes": "disk.read.bytes",
  46     "disk_write_bytes": "disk.write.bytes",
  47     "packets_dropped": "interface.if_dropped",
  48     "packets_received": "interface.if_packets",
  49     "packets_sent": "interface.if_packets",
  50     "cpu_utilization": "cpu_util",
  51 }
  52
  53
  54 class OpenstackCollector(BaseVimCollector):
  55     def __init__(self, vim_account_id: str):
  56         super().__init__(vim_account_id)
  57         self.common_db = CommonDbClient()
  58         self.auth_manager = AuthManager()
  59         self.granularity = self._get_granularity(vim_account_id)
  60         self.gnocchi_client = self._build_gnocchi_client(vim_account_id)
  61
  62     def _get_resource_uuid(self, nsr_id, vnf_member_index, vdur_name) -> str:
  63         vdur = self.common_db.get_vdur(nsr_id, vnf_member_index, vdur_name)
  64         return vdur['vim-id']
  65
  66     def _build_gnocchi_client(self, vim_account_id: str) -> gnocchi_client.Client:
  67         creds = self.auth_manager.get_credentials(vim_account_id)
  68         verify_ssl = self.auth_manager.is_verify_ssl(vim_account_id)
  69         auth = v3.Password(auth_url=creds.url,
  70                            username=creds.user,
  71                            password=creds.password,
  72                            project_name=creds.tenant_name,
  73                            project_domain_id='default',
  74                            user_domain_id='default')
  75         sess = session.Session(auth=auth, verify=verify_ssl)
  76         return gnocchi_client.Client(session=sess)
  77
  78     def _get_granularity(self, vim_account_id: str):
  79         creds = self.auth_manager.get_credentials(vim_account_id)
  80         vim_config = json.loads(creds.config)
  81         if 'granularity' in vim_config:
  82             return int(vim_config['granularity'])
  83         else:
  84             cfg = Config.instance()
  85             return cfg.OS_DEFAULT_GRANULARITY
  86
  87     def collect(self, vnfr: dict) -> List[Metric]:
  88         nsr_id = vnfr['nsr-id-ref']
  89         vnf_member_index = vnfr['member-vnf-index-ref']
  90         vnfd = self.common_db.get_vnfd(vnfr['vnfd-id'])
  91         metrics = []
  92         for vdur in vnfr['vdur']:
  93             # This avoids errors when vdur records have not been completely filled
  94             if 'name' not in vdur:
  95                 continue
  96             vdu = next(
  97                 filter(lambda vdu: vdu['id'] == vdur['vdu-id-ref'], vnfd['vdu'])
  98             )
  99             if 'monitoring-param' in vdu:
 100                 for param in vdu['monitoring-param']:
 101                     metric_name = param['nfvi-metric']
 102                     gnocchi_metric_name = METRIC_MAPPINGS[metric_name]
 103                     delta = 10 * self.granularity
 104                     start_date = datetime.datetime.now() - datetime.timedelta(seconds=delta)
 105                     resource_id = self._get_resource_uuid(nsr_id, vnf_member_index, vdur['name'])
 106                     try:
 107                         measures = self.gnocchi_client.metric.get_measures(gnocchi_metric_name,
 108                                                                            start=start_date,
 109                                                                            resource_id=resource_id,
 110                                                                            granularity=self.granularity)
 111                         if len(measures):
 112                             metric = VnfMetric(nsr_id, vnf_member_index, vdur['name'], metric_name, measures[-1][2])
 113                             metrics.append(metric)
 114                     except gnocchiclient.exceptions.NotFound as e:
 115                         log.debug("No metric found: %s", e)
 116                         pass
 117         return metrics