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 enum import Enum
  26 from typing import List
  27
  28 import gnocchiclient.exceptions
  29 from ceilometerclient.v2 import client as ceilometer_client
  30 from gnocchiclient.v1 import client as gnocchi_client
  31 from keystoneauth1 import session
  32 from keystoneauth1.identity import v3
  33 from keystoneclient.v3 import client as keystone_client
  34 from neutronclient.v2_0 import client as neutron_client
  35
  36 from osm_mon.collector.metric import Metric
  37 from osm_mon.collector.utils import CollectorUtils
  38 from osm_mon.collector.vnf_collectors.base_vim import BaseVimCollector
  39 from osm_mon.collector.vnf_metric import VnfMetric
  40 from osm_mon.core.common_db import CommonDbClient
  41 from osm_mon.core.config import Config
  42
  43 log = logging.getLogger(__name__)
  44
  45 METRIC_MAPPINGS = {
  46     "average_memory_utilization": "memory.usage",
  47     "disk_read_ops": "disk.read.requests.rate",
  48     "disk_write_ops": "disk.write.requests.rate",
  49     "disk_read_bytes": "disk.read.bytes.rate",
  50     "disk_write_bytes": "disk.write.bytes.rate",
  51     "packets_in_dropped": "network.outgoing.packets.drop",
  52     "packets_out_dropped": "network.incoming.packets.drop",
  53     "packets_received": "network.incoming.packets.rate",
  54     "packets_sent": "network.outgoing.packets.rate",
  55     "cpu_utilization": "cpu_util",
  56 }
  57
  58 INTERFACE_METRICS = ['packets_in_dropped', 'packets_out_dropped', 'packets_received', 'packets_sent']
  59
  60
  61 class MetricType(Enum):
  62     INSTANCE = 'instance'
  63     INTERFACE_ALL = 'interface_all'
  64     INTERFACE_ONE = 'interface_one'
  65
  66
  67 class OpenstackCollector(BaseVimCollector):
  68     def __init__(self, config: Config, vim_account_id: str):
  69         super().__init__(config, vim_account_id)
  70         self.conf = config
  71         self.common_db = CommonDbClient(config)
  72         self.backend = self._get_backend(vim_account_id)
  73
  74     def _build_keystone_client(self, vim_account_id: str) -> keystone_client.Client:
  75         sess = OpenstackBackend.get_session(vim_account_id)
  76         return keystone_client.Client(session=sess)
  77
  78     def _get_resource_uuid(self, nsr_id: str, vnf_member_index: str, vdur_name: str) -> str:
  79         vdur = self.common_db.get_vdur(nsr_id, vnf_member_index, vdur_name)
  80         return vdur['vim-id']
  81
  82     def _get_granularity(self, vim_account_id: str):
  83         creds = CollectorUtils.get_credentials(vim_account_id)
  84         vim_config = json.loads(creds.config)
  85         if 'granularity' in vim_config:
  86             return int(vim_config['granularity'])
  87         else:
  88             return int(self.conf.get('openstack', 'default_granularity'))
  89
  90     def collect(self, vnfr: dict) -> List[Metric]:
  91         nsr_id = vnfr['nsr-id-ref']
  92         vnf_member_index = vnfr['member-vnf-index-ref']
  93         vnfd = self.common_db.get_vnfd(vnfr['vnfd-id'])
  94         metrics = []
  95         for vdur in vnfr['vdur']:
  96             # This avoids errors when vdur records have not been completely filled
  97             if 'name' not in vdur:
  98                 continue
  99             vdu = next(
 100                 filter(lambda vdu: vdu['id'] == vdur['vdu-id-ref'], vnfd['vdu'])
 101             )
 102             if 'monitoring-param' in vdu:
 103                 for param in vdu['monitoring-param']:
 104                     metric_name = param['nfvi-metric']
 105                     interface_name = param['interface-name-ref'] if 'interface-name-ref' in param else None
 106                     openstack_metric_name = METRIC_MAPPINGS[metric_name]
 107                     metric_type = self._get_metric_type(metric_name, interface_name)
 108                     try:
 109                         resource_id = self._get_resource_uuid(nsr_id, vnf_member_index, vdur['name'])
 110                     except ValueError:
 111                         log.warning(
 112                             "Could not find resource_uuid for vdur %s, vnf_member_index %s, nsr_id %s. "
 113                             "Was it recently deleted?",
 114                             vdur['name'], vnf_member_index, nsr_id)
 115                         continue
 116                     try:
 117                         value = self.backend.collect_metric(metric_type, openstack_metric_name, resource_id,
 118                                                             interface_name)
 119                         if value is not None:
 120                             metric = VnfMetric(nsr_id, vnf_member_index, vdur['name'], metric_name, value)
 121                             metrics.append(metric)
 122                     except Exception:
 123                         log.exception("Error collecting metric %s for vdu %s" % (metric_name, vdur['name']))
 124         return metrics
 125
 126     def _get_backend(self, vim_account_id: str):
 127         keystone = self._build_keystone_client(vim_account_id)
 128         if keystone.services.list('gnocchi'):
 129             granularity = self._get_granularity(vim_account_id)
 130             return GnocchiBackend(vim_account_id, granularity)
 131         elif keystone.services.list('ceilometer'):
 132             return CeilometerBackend(vim_account_id)
 133
 134     def _get_metric_type(self, metric_name: str, interface_name: str) -> MetricType:
 135         if metric_name not in INTERFACE_METRICS:
 136             return MetricType.INSTANCE
 137         else:
 138             if interface_name:
 139                 return MetricType.INTERFACE_ONE
 140             return MetricType.INTERFACE_ALL
 141
 142
 143 class OpenstackBackend:
 144     def collect_metric(self, metric_type: MetricType, metric_name: str, resource_id: str, interface_name: str):
 145         pass
 146
 147     @staticmethod
 148     def get_session(vim_account_id: str):
 149         creds = CollectorUtils.get_credentials(vim_account_id)
 150         verify_ssl = CollectorUtils.is_verify_ssl(creds)
 151         auth = v3.Password(auth_url=creds.url,
 152                            username=creds.user,
 153                            password=creds.password,
 154                            project_name=creds.tenant_name,
 155                            project_domain_id='default',
 156                            user_domain_id='default')
 157         return session.Session(auth=auth, verify=verify_ssl)
 158
 159
 160 class GnocchiBackend(OpenstackBackend):
 161
 162     def __init__(self, vim_account_id: str, granularity: int):
 163         self.client = self._build_gnocchi_client(vim_account_id)
 164         self.neutron = self._build_neutron_client(vim_account_id)
 165         self.granularity = granularity
 166
 167     def _build_gnocchi_client(self, vim_account_id: str) -> gnocchi_client.Client:
 168         sess = OpenstackBackend.get_session(vim_account_id)
 169         return gnocchi_client.Client(session=sess)
 170
 171     def _build_neutron_client(self, vim_account_id: str) -> neutron_client.Client:
 172         sess = OpenstackBackend.get_session(vim_account_id)
 173         return neutron_client.Client(session=sess)
 174
 175     def collect_metric(self, metric_type: MetricType, metric_name: str, resource_id: str, interface_name: str):
 176         if metric_type == MetricType.INTERFACE_ONE:
 177             return self._collect_interface_one_metric(metric_name, resource_id, interface_name)
 178
 179         if metric_type == MetricType.INTERFACE_ALL:
 180             return self._collect_interface_all_metric(metric_name, resource_id)
 181
 182         elif metric_type == MetricType.INSTANCE:
 183             return self._collect_instance_metric(metric_name, resource_id)
 184
 185         else:
 186             raise Exception('Unknown metric type %s' % metric_type.value)
 187
 188     def _collect_interface_one_metric(self, metric_name, resource_id, interface_name):
 189         delta = 10 * self.granularity
 190         start_date = datetime.datetime.now() - datetime.timedelta(seconds=delta)
 191         ports = self.neutron.list_ports(name=interface_name, device_id=resource_id)
 192         if not ports or not ports['ports']:
 193             raise Exception(
 194                 'Port not found for interface %s on instance %s' % (interface_name, resource_id))
 195         port = ports['ports'][0]
 196         port_uuid = port['id'][:11]
 197         tap_name = 'tap' + port_uuid
 198         interfaces = self.client.resource.search(resource_type='instance_network_interface',
 199                                                  query={'=': {'name': tap_name}})
 200         measures = self.client.metric.get_measures(metric_name,
 201                                                    start=start_date,
 202                                                    resource_id=interfaces[0]['id'],
 203                                                    granularity=self.granularity)
 204         return measures[-1][2] if measures else None
 205
 206     def _collect_interface_all_metric(self, openstack_metric_name, resource_id):
 207         delta = 10 * self.granularity
 208         start_date = datetime.datetime.now() - datetime.timedelta(seconds=delta)
 209         total_measure = None
 210         interfaces = self.client.resource.search(resource_type='instance_network_interface',
 211                                                  query={'=': {'instance_id': resource_id}})
 212         for interface in interfaces:
 213             try:
 214                 measures = self.client.metric.get_measures(openstack_metric_name,
 215                                                            start=start_date,
 216                                                            resource_id=interface['id'],
 217                                                            granularity=self.granularity)
 218                 if measures:
 219                     if not total_measure:
 220                         total_measure = 0.0
 221                     total_measure += measures[-1][2]
 222
 223             except gnocchiclient.exceptions.NotFound as e:
 224                 log.debug("No metric %s found for interface %s: %s", openstack_metric_name,
 225                           interface['id'], e)
 226         return total_measure
 227
 228     def _collect_instance_metric(self, openstack_metric_name, resource_id):
 229         delta = 10 * self.granularity
 230         start_date = datetime.datetime.now() - datetime.timedelta(seconds=delta)
 231         value = None
 232         try:
 233             measures = self.client.metric.get_measures(openstack_metric_name,
 234                                                        start=start_date,
 235                                                        resource_id=resource_id,
 236                                                        granularity=self.granularity)
 237             if measures:
 238                 value = measures[-1][2]
 239         except gnocchiclient.exceptions.NotFound as e:
 240             log.debug("No metric %s found for instance %s: %s", openstack_metric_name, resource_id,
 241                       e)
 242         return value
 243
 244
 245 class CeilometerBackend(OpenstackBackend):
 246     def __init__(self, vim_account_id: str):
 247         self.client = self._build_ceilometer_client(vim_account_id)
 248
 249     def _build_ceilometer_client(self, vim_account_id: str) -> ceilometer_client.Client:
 250         sess = OpenstackBackend.get_session(vim_account_id)
 251         return ceilometer_client.Client(session=sess)
 252
 253     def collect_metric(self, metric_type: MetricType, metric_name: str, resource_id: str, interface_name: str):
 254         if metric_type != MetricType.INSTANCE:
 255             raise NotImplementedError('Ceilometer backend only support instance metrics')
 256         measures = self.client.samples.list(meter_name=metric_name, limit=1, q=[
 257             {'field': 'resource_id', 'op': 'eq', 'value': resource_id}])
 258         return measures[0].counter_volume if measures else None