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