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 from enum import Enum
  23 import logging
  24 import time
  25 from typing import List
  26
  27 from ceilometerclient import client as ceilometer_client
  28 from ceilometerclient.exc import HTTPException
  29 import gnocchiclient.exceptions
  30 from gnocchiclient.v1 import client as gnocchi_client
  31 from keystoneauth1.exceptions.catalog import EndpointNotFound
  32 from keystoneclient.v3 import client as keystone_client
  33 from neutronclient.v2_0 import client as neutron_client
  34
  35 from osm_mon.collector.metric import Metric
  36 from osm_mon.collector.utils.openstack import OpenstackUtils
  37 from osm_mon.collector.vnf_collectors.base_vim import BaseVimCollector
  38 from osm_mon.collector.vnf_metric import VnfMetric
  39 from osm_mon.core.common_db import CommonDbClient
  40 from osm_mon.core.config import Config
  41
  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",
  56 }
  57
  58 # Metrics which have new names in Rocky and higher releases
  59 METRIC_MAPPINGS_FOR_ROCKY_AND_NEWER_RELEASES = {
  60     "disk_read_ops": "disk.device.read.requests",
  61     "disk_write_ops": "disk.device.write.requests",
  62     "disk_read_bytes": "disk.device.read.bytes",
  63     "disk_write_bytes": "disk.device.write.bytes",
  64     "packets_received": "network.incoming.packets",
  65     "packets_sent": "network.outgoing.packets"
  66 }
  67
  68 METRIC_MULTIPLIERS = {"cpu": 0.0000001}
  69
  70 METRIC_AGGREGATORS = {"cpu": "rate:mean"}
  71
  72 INTERFACE_METRICS = [
  73     "packets_in_dropped",
  74     "packets_out_dropped",
  75     "packets_received",
  76     "packets_sent",
  77 ]
  78
  79
  80 class MetricType(Enum):
  81     INSTANCE = "instance"
  82     INTERFACE_ALL = "interface_all"
  83     INTERFACE_ONE = "interface_one"
  84
  85
  86 class OpenstackCollector(BaseVimCollector):
  87     def __init__(self, config: Config, vim_account_id: str, vim_session: object):
  88         super().__init__(config, vim_account_id)
  89         self.common_db = CommonDbClient(config)
  90         vim_account = self.common_db.get_vim_account(vim_account_id)
  91         self.backend = self._get_backend(vim_account, vim_session)
  92
  93     def _build_keystone_client(self, vim_account: dict) -> keystone_client.Client:
  94         sess = OpenstackUtils.get_session(vim_account)
  95         return keystone_client.Client(session=sess)
  96
  97     def _get_resource_uuid(
  98         self, nsr_id: str, vnf_member_index: str, vdur_name: str
  99     ) -> str:
 100         vdur = self.common_db.get_vdur(nsr_id, vnf_member_index, vdur_name)
 101         return vdur["vim-id"]
 102
 103     def collect(self, vnfr: dict) -> List[Metric]:
 104         nsr_id = vnfr["nsr-id-ref"]
 105         vnf_member_index = vnfr["member-vnf-index-ref"]
 106         vnfd = self.common_db.get_vnfd(vnfr["vnfd-id"])
 107         # Populate extra tags for metrics
 108         tags = {}
 109         tags["ns_name"] = self.common_db.get_nsr(nsr_id)["name"]
 110         if vnfr["_admin"]["projects_read"]:
 111             tags["project_id"] = vnfr["_admin"]["projects_read"][0]
 112         else:
 113             tags["project_id"] = ""
 114
 115         metrics = []
 116
 117         for vdur in vnfr["vdur"]:
 118             # This avoids errors when vdur records have not been completely filled
 119             if "name" not in vdur:
 120                 continue
 121             vdu = next(filter(lambda vdu: vdu["id"] == vdur["vdu-id-ref"], vnfd["vdu"]))
 122             if "monitoring-parameter" in vdu:
 123                 for param in vdu["monitoring-parameter"]:
 124                     metric_name = param["performance-metric"]
 125                     openstack_metric_name = METRIC_MAPPINGS[metric_name]
 126                     metric_type = self._get_metric_type(metric_name)
 127                     try:
 128                         resource_id = self._get_resource_uuid(
 129                             nsr_id, vnf_member_index, vdur["name"]
 130                         )
 131                     except ValueError:
 132                         log.warning(
 133                             "Could not find resource_uuid for vdur %s, vnf_member_index %s, nsr_id %s. "
 134                             "Was it recently deleted?",
 135                             vdur["name"],
 136                             vnf_member_index,
 137                             nsr_id,
 138                         )
 139                         continue
 140                     try:
 141                         log.info(
 142                             "Collecting metric type: %s and metric_name: %s and resource_id %s and ",
 143                             metric_type,
 144                             metric_name,
 145                             resource_id,
 146                         )
 147                         value = self.backend.collect_metric(
 148                             metric_type, openstack_metric_name, resource_id
 149                         )
 150
 151                         if value is None and metric_name in METRIC_MAPPINGS_FOR_ROCKY_AND_NEWER_RELEASES:
 152                             # Reattempting metric collection with new metric names.
 153                             # Some metric names have changed in newer Openstack releases
 154                             log.info(
 155                                 "Reattempting metric collection for type: %s and name: %s and resource_id %s",
 156                                 metric_type,
 157                                 metric_name,
 158                                 resource_id
 159                             )
 160                             openstack_metric_name = METRIC_MAPPINGS_FOR_ROCKY_AND_NEWER_RELEASES[metric_name]
 161                             value = self.backend.collect_metric(
 162                                 metric_type, openstack_metric_name, resource_id
 163                             )
 164                         if value is not None:
 165                             log.info("value: %s", value)
 166                             metric = VnfMetric(
 167                                 nsr_id,
 168                                 vnf_member_index,
 169                                 vdur["name"],
 170                                 metric_name,
 171                                 value,
 172                                 tags,
 173                             )
 174                             metrics.append(metric)
 175                         else:
 176                             log.info("metric value is empty")
 177                     except Exception as e:
 178                         log.exception(
 179                             "Error collecting metric %s for vdu %s"
 180                             % (metric_name, vdur["name"])
 181                         )
 182                         log.info("Error in metric collection: %s" % e)
 183         return metrics
 184
 185     def _get_backend(self, vim_account: dict, vim_session: object):
 186         try:
 187             gnocchi = GnocchiBackend(vim_account, vim_session)
 188             gnocchi.client.metric.list(limit=1)
 189             log.info("Using gnocchi backend to collect metric")
 190             return gnocchi
 191         except (HTTPException, EndpointNotFound):
 192             ceilometer = CeilometerBackend(vim_account, vim_session)
 193             ceilometer.client.capabilities.get()
 194             log.info("Using ceilometer backend to collect metric")
 195             return ceilometer
 196
 197     def _get_metric_type(self, metric_name: str) -> MetricType:
 198         if metric_name not in INTERFACE_METRICS:
 199             return MetricType.INSTANCE
 200         else:
 201             return MetricType.INTERFACE_ALL
 202
 203
 204 class OpenstackBackend:
 205     def collect_metric(
 206         self, metric_type: MetricType, metric_name: str, resource_id: str
 207     ):
 208         pass
 209
 210
 211 class GnocchiBackend(OpenstackBackend):
 212     def __init__(self, vim_account: dict, vim_session: object):
 213         self.client = self._build_gnocchi_client(vim_account, vim_session)
 214         self.neutron = self._build_neutron_client(vim_account, vim_session)
 215
 216     def _build_gnocchi_client(self, vim_account: dict, vim_session: object) -> gnocchi_client.Client:
 217         return gnocchi_client.Client(session=vim_session)
 218
 219     def _build_neutron_client(self, vim_account: dict, vim_session: object) -> neutron_client.Client:
 220         return neutron_client.Client(session=vim_session)
 221
 222     def collect_metric(
 223         self, metric_type: MetricType, metric_name: str, resource_id: str
 224     ):
 225         if metric_type == MetricType.INTERFACE_ALL:
 226             return self._collect_interface_all_metric(metric_name, resource_id)
 227
 228         elif metric_type == MetricType.INSTANCE:
 229             return self._collect_instance_metric(metric_name, resource_id)
 230
 231         else:
 232             raise Exception("Unknown metric type %s" % metric_type.value)
 233
 234     def _collect_interface_all_metric(self, openstack_metric_name, resource_id):
 235         total_measure = None
 236         interfaces = self.client.resource.search(
 237             resource_type="instance_network_interface",
 238             query={"=": {"instance_id": resource_id}},
 239         )
 240         for interface in interfaces:
 241             try:
 242                 measures = self.client.metric.get_measures(
 243                     openstack_metric_name, resource_id=interface["id"], limit=1
 244                 )
 245                 if measures:
 246                     if not total_measure:
 247                         total_measure = 0.0
 248                     total_measure += measures[-1][2]
 249             except (gnocchiclient.exceptions.NotFound, TypeError) as e:
 250                 # Gnocchi in some Openstack versions raise TypeError instead of NotFound
 251                 log.debug(
 252                     "No metric %s found for interface %s: %s",
 253                     openstack_metric_name,
 254                     interface["id"],
 255                     e,
 256                 )
 257         return total_measure
 258
 259     def _collect_instance_metric(self, openstack_metric_name, resource_id):
 260         value = None
 261         try:
 262             aggregation = METRIC_AGGREGATORS.get(openstack_metric_name)
 263
 264             try:
 265                 measures = self.client.metric.get_measures(
 266                     openstack_metric_name,
 267                     aggregation=aggregation,
 268                     start=time.time() - 1200,
 269                     resource_id=resource_id,
 270                 )
 271                 if measures:
 272                     value = measures[-1][2]
 273             except (
 274                 gnocchiclient.exceptions.NotFound,
 275                 gnocchiclient.exceptions.BadRequest,
 276                 TypeError,
 277             ) as e:
 278                 # CPU metric in previous Openstack versions do not support rate:mean aggregation method
 279                 # Gnocchi in some Openstack versions raise TypeError instead of NotFound or BadRequest
 280                 if openstack_metric_name == "cpu":
 281                     log.debug(
 282                         "No metric %s found for instance %s: %s",
 283                         openstack_metric_name,
 284                         resource_id,
 285                         e,
 286                     )
 287                     log.info(
 288                         "Retrying to get metric %s for instance %s without aggregation",
 289                         openstack_metric_name,
 290                         resource_id,
 291                     )
 292                     measures = self.client.metric.get_measures(
 293                         openstack_metric_name, resource_id=resource_id, limit=1
 294                     )
 295                 else:
 296                     raise e
 297                 # measures[-1] is the last measure
 298                 # measures[-2] is the previous measure
 299                 # measures[x][2] is the value of the metric
 300                 if measures and len(measures) >= 2:
 301                     value = measures[-1][2] - measures[-2][2]
 302             if value:
 303                 # measures[-1][0] is the time of the reporting interval
 304                 # measures[-1][1] is the duration of the reporting interval
 305                 if aggregation:
 306                     # If this is an aggregate, we need to divide the total over the reported time period.
 307                     # Even if the aggregation method is not supported by Openstack, the code will execute it
 308                     # because aggregation is specified in METRIC_AGGREGATORS
 309                     value = value / measures[-1][1]
 310                 if openstack_metric_name in METRIC_MULTIPLIERS:
 311                     value = value * METRIC_MULTIPLIERS[openstack_metric_name]
 312         except gnocchiclient.exceptions.NotFound as e:
 313             log.debug(
 314                 "No metric %s found for instance %s: %s",
 315                 openstack_metric_name,
 316                 resource_id,
 317                 e,
 318             )
 319         return value
 320
 321
 322 class CeilometerBackend(OpenstackBackend):
 323     def __init__(self, vim_account: dict, vim_session: object):
 324         self.client = self._build_ceilometer_client(vim_account, vim_session)
 325
 326     def _build_ceilometer_client(self, vim_account: dict, vim_session: object) -> ceilometer_client.Client:
 327         return ceilometer_client.Client("2", session=vim_session)
 328
 329     def collect_metric(
 330         self, metric_type: MetricType, metric_name: str, resource_id: str
 331     ):
 332         if metric_type != MetricType.INSTANCE:
 333             raise NotImplementedError(
 334                 "Ceilometer backend only support instance metrics"
 335             )
 336         measures = self.client.samples.list(
 337             meter_name=metric_name,
 338             limit=1,
 339             q=[{"field": "resource_id", "op": "eq", "value": resource_id}],
 340         )
 341         return measures[0].counter_volume if measures else None