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 logging
  23 from enum import Enum
  24 from typing import List
  25
  26 import gnocchiclient.exceptions
  27 from ceilometerclient import client as ceilometer_client
  28 from ceilometerclient.exc import HTTPException
  29 from gnocchiclient.v1 import client as gnocchi_client
  30 from keystoneclient.v3 import client as keystone_client
  31 from keystoneauth1.exceptions.catalog import EndpointNotFound
  32 from neutronclient.v2_0 import client as neutron_client
  33
  34 from osm_mon.collector.metric import Metric
  35 from osm_mon.collector.utils.openstack import OpenstackUtils
  36 from osm_mon.collector.vnf_collectors.base_vim import BaseVimCollector
  37 from osm_mon.collector.vnf_metric import VnfMetric
  38 from osm_mon.core.common_db import CommonDbClient
  39 from osm_mon.core.config import Config
  40
  41 log = logging.getLogger(__name__)
  42
  43 METRIC_MAPPINGS = {
  44     "average_memory_utilization": "memory.usage",
  45     "disk_read_ops": "disk.read.requests.rate",
  46     "disk_write_ops": "disk.write.requests.rate",
  47     "disk_read_bytes": "disk.read.bytes.rate",
  48     "disk_write_bytes": "disk.write.bytes.rate",
  49     "packets_in_dropped": "network.outgoing.packets.drop",
  50     "packets_out_dropped": "network.incoming.packets.drop",
  51     "packets_received": "network.incoming.packets.rate",
  52     "packets_sent": "network.outgoing.packets.rate",
  53     "cpu_utilization": "cpu_util",
  54 }
  55
  56 INTERFACE_METRICS = ['packets_in_dropped', 'packets_out_dropped', 'packets_received', 'packets_sent']
  57
  58
  59 class MetricType(Enum):
  60     INSTANCE = 'instance'
  61     INTERFACE_ALL = 'interface_all'
  62     INTERFACE_ONE = 'interface_one'
  63
  64
  65 class OpenstackCollector(BaseVimCollector):
  66     def __init__(self, config: Config, vim_account_id: str):
  67         super().__init__(config, vim_account_id)
  68         self.common_db = CommonDbClient(config)
  69         vim_account = self.common_db.get_vim_account(vim_account_id)
  70         self.backend = self._get_backend(vim_account)
  71
  72     def _build_keystone_client(self, vim_account: dict) -> keystone_client.Client:
  73         sess = OpenstackUtils.get_session(vim_account)
  74         return keystone_client.Client(session=sess)
  75
  76     def _get_resource_uuid(self, nsr_id: str, vnf_member_index: str, vdur_name: str) -> str:
  77         vdur = self.common_db.get_vdur(nsr_id, vnf_member_index, vdur_name)
  78         return vdur['vim-id']
  79
  80     def collect(self, vnfr: dict) -> List[Metric]:
  81         nsr_id = vnfr['nsr-id-ref']
  82         vnf_member_index = vnfr['member-vnf-index-ref']
  83         vnfd = self.common_db.get_vnfd(vnfr['vnfd-id'])
  84         metrics = []
  85         for vdur in vnfr['vdur']:
  86             # This avoids errors when vdur records have not been completely filled
  87             if 'name' not in vdur:
  88                 continue
  89             vdu = next(
  90                 filter(lambda vdu: vdu['id'] == vdur['vdu-id-ref'], vnfd['vdu'])
  91             )
  92             if 'monitoring-param' in vdu:
  93                 for param in vdu['monitoring-param']:
  94                     metric_name = param['nfvi-metric']
  95                     interface_name = param['interface-name-ref'] if 'interface-name-ref' in param else None
  96                     openstack_metric_name = METRIC_MAPPINGS[metric_name]
  97                     metric_type = self._get_metric_type(metric_name, interface_name)
  98                     try:
  99                         resource_id = self._get_resource_uuid(nsr_id, vnf_member_index, vdur['name'])
 100                     except ValueError:
 101                         log.warning(
 102                             "Could not find resource_uuid for vdur %s, vnf_member_index %s, nsr_id %s. "
 103                             "Was it recently deleted?",
 104                             vdur['name'], vnf_member_index, nsr_id)
 105                         continue
 106                     try:
 107                         value = self.backend.collect_metric(metric_type, openstack_metric_name, resource_id,
 108                                                             interface_name)
 109                         if value is not None:
 110                             tags = {}
 111                             if interface_name:
 112                                 tags['interface'] = interface_name
 113                             metric = VnfMetric(nsr_id, vnf_member_index, vdur['name'], metric_name, value, tags)
 114                             metrics.append(metric)
 115                     except Exception:
 116                         log.exception("Error collecting metric %s for vdu %s" % (metric_name, vdur['name']))
 117         return metrics
 118
 119     def _get_backend(self, vim_account: dict):
 120         try:
 121             ceilometer = CeilometerBackend(vim_account)
 122             ceilometer.client.capabilities.get()
 123             return ceilometer
 124         except (HTTPException, EndpointNotFound):
 125             gnocchi = GnocchiBackend(vim_account)
 126             gnocchi.client.metric.list(limit=1)
 127             return gnocchi
 128
 129     def _get_metric_type(self, metric_name: str, interface_name: str) -> MetricType:
 130         if metric_name not in INTERFACE_METRICS:
 131             return MetricType.INSTANCE
 132         else:
 133             if interface_name:
 134                 return MetricType.INTERFACE_ONE
 135             return MetricType.INTERFACE_ALL
 136
 137
 138 class OpenstackBackend:
 139     def collect_metric(self, metric_type: MetricType, metric_name: str, resource_id: str, interface_name: str):
 140         pass
 141
 142
 143 class GnocchiBackend(OpenstackBackend):
 144
 145     def __init__(self, vim_account: dict):
 146         self.client = self._build_gnocchi_client(vim_account)
 147         self.neutron = self._build_neutron_client(vim_account)
 148
 149     def _build_gnocchi_client(self, vim_account: dict) -> gnocchi_client.Client:
 150         sess = OpenstackUtils.get_session(vim_account)
 151         return gnocchi_client.Client(session=sess)
 152
 153     def _build_neutron_client(self, vim_account: dict) -> neutron_client.Client:
 154         sess = OpenstackUtils.get_session(vim_account)
 155         return neutron_client.Client(session=sess)
 156
 157     def collect_metric(self, metric_type: MetricType, metric_name: str, resource_id: str, interface_name: str):
 158         if metric_type == MetricType.INTERFACE_ONE:
 159             return self._collect_interface_one_metric(metric_name, resource_id, interface_name)
 160
 161         if metric_type == MetricType.INTERFACE_ALL:
 162             return self._collect_interface_all_metric(metric_name, resource_id)
 163
 164         elif metric_type == MetricType.INSTANCE:
 165             return self._collect_instance_metric(metric_name, resource_id)
 166
 167         else:
 168             raise Exception('Unknown metric type %s' % metric_type.value)
 169
 170     def _collect_interface_one_metric(self, metric_name, resource_id, interface_name):
 171         ports = self.neutron.list_ports(name=interface_name, device_id=resource_id)
 172         if not ports or not ports['ports']:
 173             raise Exception(
 174                 'Port not found for interface %s on instance %s' % (interface_name, resource_id))
 175         port = ports['ports'][0]
 176         port_uuid = port['id'][:11]
 177         tap_name = 'tap' + port_uuid
 178         interfaces = self.client.resource.search(resource_type='instance_network_interface',
 179                                                  query={'=': {'name': tap_name}})
 180         measures = self.client.metric.get_measures(metric_name,
 181                                                    resource_id=interfaces[0]['id'],
 182                                                    limit=1)
 183         return measures[-1][2] if measures else None
 184
 185     def _collect_interface_all_metric(self, openstack_metric_name, resource_id):
 186         total_measure = None
 187         interfaces = self.client.resource.search(resource_type='instance_network_interface',
 188                                                  query={'=': {'instance_id': resource_id}})
 189         for interface in interfaces:
 190             try:
 191                 measures = self.client.metric.get_measures(openstack_metric_name,
 192                                                            resource_id=interface['id'],
 193                                                            limit=1)
 194                 if measures:
 195                     if not total_measure:
 196                         total_measure = 0.0
 197                     total_measure += measures[-1][2]
 198
 199             except gnocchiclient.exceptions.NotFound as e:
 200                 log.debug("No metric %s found for interface %s: %s", openstack_metric_name,
 201                           interface['id'], e)
 202         return total_measure
 203
 204     def _collect_instance_metric(self, openstack_metric_name, resource_id):
 205         value = None
 206         try:
 207             measures = self.client.metric.get_measures(openstack_metric_name,
 208                                                        resource_id=resource_id,
 209                                                        limit=1)
 210             if measures:
 211                 value = measures[-1][2]
 212         except gnocchiclient.exceptions.NotFound as e:
 213             log.debug("No metric %s found for instance %s: %s", openstack_metric_name, resource_id,
 214                       e)
 215         return value
 216
 217
 218 class CeilometerBackend(OpenstackBackend):
 219     def __init__(self, vim_account: dict):
 220         self.client = self._build_ceilometer_client(vim_account)
 221
 222     def _build_ceilometer_client(self, vim_account: dict) -> ceilometer_client.Client:
 223         sess = OpenstackUtils.get_session(vim_account)
 224         return ceilometer_client.Client("2", session=sess)
 225
 226     def collect_metric(self, metric_type: MetricType, metric_name: str, resource_id: str, interface_name: str):
 227         if metric_type != MetricType.INSTANCE:
 228             raise NotImplementedError('Ceilometer backend only support instance metrics')
 229         measures = self.client.samples.list(meter_name=metric_name, limit=1, q=[
 230             {'field': 'resource_id', 'op': 'eq', 'value': resource_id}])
 231         return measures[0].counter_volume if measures else None