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 from prometheus_api_client import PrometheusConnect as prometheus_client
  35
  36 from osm_mon.collector.metric import Metric
  37 from osm_mon.collector.utils.openstack import OpenstackUtils
  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
  44 log = logging.getLogger(__name__)
  45
  46 METRIC_MAPPINGS = {
  47     "average_memory_utilization": "memory.usage",
  48     "disk_read_ops": "disk.read.requests.rate",
  49     "disk_write_ops": "disk.write.requests.rate",
  50     "disk_read_bytes": "disk.read.bytes.rate",
  51     "disk_write_bytes": "disk.write.bytes.rate",
  52     "packets_in_dropped": "network.outgoing.packets.drop",
  53     "packets_out_dropped": "network.incoming.packets.drop",
  54     "packets_received": "network.incoming.packets.rate",
  55     "packets_sent": "network.outgoing.packets.rate",
  56     "cpu_utilization": "cpu",
  57 }
  58
  59 # Metrics which have new names in Rocky and higher releases
  60 METRIC_MAPPINGS_FOR_ROCKY_AND_NEWER_RELEASES = {
  61     "disk_read_ops": "disk.device.read.requests",
  62     "disk_write_ops": "disk.device.write.requests",
  63     "disk_read_bytes": "disk.device.read.bytes",
  64     "disk_write_bytes": "disk.device.write.bytes",
  65     "packets_received": "network.incoming.packets",
  66     "packets_sent": "network.outgoing.packets",
  67 }
  68
  69 METRIC_MULTIPLIERS = {"cpu": 0.0000001}
  70
  71 METRIC_AGGREGATORS = {"cpu": "rate:mean"}
  72
  73 INTERFACE_METRICS = [
  74     "packets_in_dropped",
  75     "packets_out_dropped",
  76     "packets_received",
  77     "packets_sent",
  78 ]
  79
  80 INSTANCE_DISK = [
  81     "disk_read_ops",
  82     "disk_write_ops",
  83     "disk_read_bytes",
  84     "disk_write_bytes",
  85 ]
  86
  87
  88 class MetricType(Enum):
  89     INSTANCE = "instance"
  90     INTERFACE_ALL = "interface_all"
  91     INTERFACE_ONE = "interface_one"
  92     INSTANCEDISK = "instancedisk"
  93
  94
  95 class OpenstackCollector(BaseVimCollector):
  96     def __init__(self, config: Config, vim_account_id: str, vim_session: object):
  97         super().__init__(config, vim_account_id)
  98         self.common_db = CommonDbClient(config)
  99         vim_account = self.common_db.get_vim_account(vim_account_id)
 100         self.backend = self._get_backend(vim_account, vim_session)
 101
 102     def _build_keystone_client(self, vim_account: dict) -> keystone_client.Client:
 103         sess = OpenstackUtils.get_session(vim_account)
 104         return keystone_client.Client(session=sess)
 105
 106     def _get_resource_uuid(
 107         self, nsr_id: str, vnf_member_index: str, vdur_name: str
 108     ) -> str:
 109         vdur = self.common_db.get_vdur(nsr_id, vnf_member_index, vdur_name)
 110         return vdur["vim-id"]
 111
 112     def collect(self, vnfr: dict) -> List[Metric]:
 113         nsr_id = vnfr["nsr-id-ref"]
 114         vnf_member_index = vnfr["member-vnf-index-ref"]
 115         vnfd = self.common_db.get_vnfd(vnfr["vnfd-id"])
 116         # Populate extra tags for metrics
 117         tags = {}
 118         tags["ns_name"] = self.common_db.get_nsr(nsr_id)["name"]
 119         if vnfr["_admin"]["projects_read"]:
 120             tags["project_id"] = vnfr["_admin"]["projects_read"][0]
 121         else:
 122             tags["project_id"] = ""
 123
 124         metrics = []
 125
 126         for vdur in vnfr["vdur"]:
 127             # This avoids errors when vdur records have not been completely filled
 128             if "name" not in vdur:
 129                 continue
 130             vdu = next(filter(lambda vdu: vdu["id"] == vdur["vdu-id-ref"], vnfd["vdu"]))
 131             if "monitoring-parameter" in vdu:
 132                 for param in vdu["monitoring-parameter"]:
 133                     metric_name = param["performance-metric"]
 134                     log.debug(f"Using an {type(self.backend)} as backend")
 135                     if type(self.backend) is PrometheusTSBDBackend:
 136                         openstack_metric_name = self.backend.map_metric(metric_name)
 137                     else:
 138                         openstack_metric_name = METRIC_MAPPINGS[metric_name]
 139                     metric_type = self._get_metric_type(metric_name)
 140                     try:
 141                         resource_id = self._get_resource_uuid(
 142                             nsr_id, vnf_member_index, vdur["name"]
 143                         )
 144                     except ValueError:
 145                         log.warning(
 146                             "Could not find resource_uuid for vdur %s, vnf_member_index %s, nsr_id %s. "
 147                             "Was it recently deleted?",
 148                             vdur["name"],
 149                             vnf_member_index,
 150                             nsr_id,
 151                         )
 152                         continue
 153                     try:
 154                         log.info(
 155                             "Collecting metric type: %s and metric_name: %s and resource_id %s and ",
 156                             metric_type,
 157                             metric_name,
 158                             resource_id,
 159                         )
 160                         value = self.backend.collect_metric(
 161                             metric_type, openstack_metric_name, resource_id
 162                         )
 163
 164                         if (
 165                             value is None
 166                             and metric_name
 167                             in METRIC_MAPPINGS_FOR_ROCKY_AND_NEWER_RELEASES
 168                             and type(self.backend) is not PrometheusTSBDBackend
 169                         ):
 170                             # Reattempting metric collection with new metric names.
 171                             # Some metric names have changed in newer Openstack releases
 172                             log.info(
 173                                 "Reattempting metric collection for type: %s and name: %s and resource_id %s",
 174                                 metric_type,
 175                                 metric_name,
 176                                 resource_id,
 177                             )
 178                             openstack_metric_name = (
 179                                 METRIC_MAPPINGS_FOR_ROCKY_AND_NEWER_RELEASES[
 180                                     metric_name
 181                                 ]
 182                             )
 183                             value = self.backend.collect_metric(
 184                                 metric_type, openstack_metric_name, resource_id
 185                             )
 186                         if value is not None:
 187                             log.info("value: %s", value)
 188                             metric = VnfMetric(
 189                                 nsr_id,
 190                                 vnf_member_index,
 191                                 vdur["name"],
 192                                 metric_name,
 193                                 value,
 194                                 tags,
 195                             )
 196                             metrics.append(metric)
 197                         else:
 198                             log.info("metric value is empty")
 199                     except Exception as e:
 200                         log.exception(
 201                             "Error collecting metric %s for vdu %s"
 202                             % (metric_name, vdur["name"])
 203                         )
 204                         log.info("Error in metric collection: %s" % e)
 205         return metrics
 206
 207     def _get_backend(self, vim_account: dict, vim_session: object):
 208         if vim_account.get("prometheus-config"):
 209             try:
 210                 tsbd = PrometheusTSBDBackend(vim_account)
 211                 log.debug("Using prometheustsbd backend to collect metric")
 212                 return tsbd
 213             except Exception as e:
 214                 log.error(f"Can't create prometheus client, {e}")
 215                 return None
 216         try:
 217             gnocchi = GnocchiBackend(vim_account, vim_session)
 218             gnocchi.client.metric.list(limit=1)
 219             log.debug("Using gnocchi backend to collect metric")
 220             return gnocchi
 221         except (HTTPException, EndpointNotFound):
 222             ceilometer = CeilometerBackend(vim_account, vim_session)
 223             ceilometer.client.capabilities.get()
 224             log.debug("Using ceilometer backend to collect metric")
 225             return ceilometer
 226
 227     def _get_metric_type(self, metric_name: str) -> MetricType:
 228         if metric_name not in INTERFACE_METRICS:
 229             if metric_name not in INSTANCE_DISK:
 230                 return MetricType.INSTANCE
 231             else:
 232                 return MetricType.INSTANCEDISK
 233         else:
 234             return MetricType.INTERFACE_ALL
 235
 236
 237 class OpenstackBackend:
 238     def collect_metric(
 239         self, metric_type: MetricType, metric_name: str, resource_id: str
 240     ):
 241         pass
 242
 243
 244 class PrometheusTSBDBackend(OpenstackBackend):
 245     def __init__(self, vim_account: dict):
 246         self.cred = vim_account["prometheus-config"]["prometheus_cred"]
 247         self.map = vim_account["prometheus-config"]["prometheus_map"]
 248         self.client = self._build_prometheus_client(vim_account)
 249
 250     def _build_prometheus_client(self, vim_account: dict) -> prometheus_client:
 251         url = vim_account["prometheus-config"]["prometheus_url"]
 252         return prometheus_client(url, disable_ssl=True)
 253
 254     def collect_metric(
 255         self, metric_type: MetricType, metric_name: str, resource_id: str
 256     ):
 257         metric = self.query_metric(metric_name, resource_id)
 258         return metric["value"][1] if metric else None
 259
 260     def map_metric(self, metric_name: str):
 261         return self.map[metric_name]
 262
 263     def query_metric(self, metric_name, resource_id=None):
 264         metrics = self.client.get_current_metric_value(metric_name=metric_name)
 265         if resource_id:
 266             metric = next(
 267                 filter(lambda x: resource_id in x["metric"]["resource_id"], metrics)
 268             )
 269             return metric
 270         return metrics
 271
 272
 273 class GnocchiBackend(OpenstackBackend):
 274     def __init__(self, vim_account: dict, vim_session: object):
 275         self.client = self._build_gnocchi_client(vim_account, vim_session)
 276         self.neutron = self._build_neutron_client(vim_account, vim_session)
 277
 278     def _build_gnocchi_client(
 279         self, vim_account: dict, vim_session: object
 280     ) -> gnocchi_client.Client:
 281         return gnocchi_client.Client(session=vim_session)
 282
 283     def _build_neutron_client(
 284         self, vim_account: dict, vim_session: object
 285     ) -> neutron_client.Client:
 286         return neutron_client.Client(session=vim_session)
 287
 288     def collect_metric(
 289         self, metric_type: MetricType, metric_name: str, resource_id: str
 290     ):
 291         if metric_type == MetricType.INTERFACE_ALL:
 292             return self._collect_interface_all_metric(metric_name, resource_id)
 293
 294         elif metric_type == MetricType.INSTANCE:
 295             return self._collect_instance_metric(metric_name, resource_id)
 296
 297         elif metric_type == MetricType.INSTANCEDISK:
 298             return self._collect_instance_disk_metric(metric_name, resource_id)
 299
 300         else:
 301             raise Exception("Unknown metric type %s" % metric_type.value)
 302
 303     def _collect_interface_all_metric(self, openstack_metric_name, resource_id):
 304         total_measure = None
 305         interfaces = self.client.resource.search(
 306             resource_type="instance_network_interface",
 307             query={"=": {"instance_id": resource_id}},
 308         )
 309         for interface in interfaces:
 310             try:
 311                 measures = self.client.metric.get_measures(
 312                     openstack_metric_name, resource_id=interface["id"], limit=1
 313                 )
 314                 if measures:
 315                     if not total_measure:
 316                         total_measure = 0.0
 317                     total_measure += measures[-1][2]
 318             except (gnocchiclient.exceptions.NotFound, TypeError) as e:
 319                 # Gnocchi in some Openstack versions raise TypeError instead of NotFound
 320                 log.debug(
 321                     "No metric %s found for interface %s: %s",
 322                     openstack_metric_name,
 323                     interface["id"],
 324                     e,
 325                 )
 326         return total_measure
 327
 328     def _collect_instance_disk_metric(self, openstack_metric_name, resource_id):
 329         value = None
 330         instances = self.client.resource.search(
 331             resource_type="instance_disk",
 332             query={"=": {"instance_id": resource_id}},
 333         )
 334         for instance in instances:
 335             try:
 336                 measures = self.client.metric.get_measures(
 337                     openstack_metric_name, resource_id=instance["id"], limit=1
 338                 )
 339                 if measures:
 340                     value = measures[-1][2]
 341
 342             except gnocchiclient.exceptions.NotFound as e:
 343                 log.debug(
 344                     "No metric %s found for instance disk %s: %s",
 345                     openstack_metric_name,
 346                     instance["id"],
 347                     e,
 348                 )
 349         return value
 350
 351     def _collect_instance_metric(self, openstack_metric_name, resource_id):
 352         value = None
 353         try:
 354             aggregation = METRIC_AGGREGATORS.get(openstack_metric_name)
 355
 356             try:
 357                 measures = self.client.metric.get_measures(
 358                     openstack_metric_name,
 359                     aggregation=aggregation,
 360                     start=time.time() - 1200,
 361                     resource_id=resource_id,
 362                 )
 363                 if measures:
 364                     value = measures[-1][2]
 365             except (
 366                 gnocchiclient.exceptions.NotFound,
 367                 gnocchiclient.exceptions.BadRequest,
 368                 TypeError,
 369             ) as e:
 370                 # CPU metric in previous Openstack versions do not support rate:mean aggregation method
 371                 # Gnocchi in some Openstack versions raise TypeError instead of NotFound or BadRequest
 372                 if openstack_metric_name == "cpu":
 373                     log.debug(
 374                         "No metric %s found for instance %s: %s",
 375                         openstack_metric_name,
 376                         resource_id,
 377                         e,
 378                     )
 379                     log.info(
 380                         "Retrying to get metric %s for instance %s without aggregation",
 381                         openstack_metric_name,
 382                         resource_id,
 383                     )
 384                     measures = self.client.metric.get_measures(
 385                         openstack_metric_name, resource_id=resource_id, limit=1
 386                     )
 387                 else:
 388                     raise e
 389                 # measures[-1] is the last measure
 390                 # measures[-2] is the previous measure
 391                 # measures[x][2] is the value of the metric
 392                 if measures and len(measures) >= 2:
 393                     value = measures[-1][2] - measures[-2][2]
 394             if value:
 395                 # measures[-1][0] is the time of the reporting interval
 396                 # measures[-1][1] is the duration of the reporting interval
 397                 if aggregation:
 398                     # If this is an aggregate, we need to divide the total over the reported time period.
 399                     # Even if the aggregation method is not supported by Openstack, the code will execute it
 400                     # because aggregation is specified in METRIC_AGGREGATORS
 401                     value = value / measures[-1][1]
 402                 if openstack_metric_name in METRIC_MULTIPLIERS:
 403                     value = value * METRIC_MULTIPLIERS[openstack_metric_name]
 404         except gnocchiclient.exceptions.NotFound as e:
 405             log.debug(
 406                 "No metric %s found for instance %s: %s",
 407                 openstack_metric_name,
 408                 resource_id,
 409                 e,
 410             )
 411         return value
 412
 413
 414 class CeilometerBackend(OpenstackBackend):
 415     def __init__(self, vim_account: dict, vim_session: object):
 416         self.client = self._build_ceilometer_client(vim_account, vim_session)
 417
 418     def _build_ceilometer_client(
 419         self, vim_account: dict, vim_session: object
 420     ) -> ceilometer_client.Client:
 421         return ceilometer_client.Client("2", session=vim_session)
 422
 423     def collect_metric(
 424         self, metric_type: MetricType, metric_name: str, resource_id: str
 425     ):
 426         if metric_type != MetricType.INSTANCE:
 427             raise NotImplementedError(
 428                 "Ceilometer backend only support instance metrics"
 429             )
 430         measures = self.client.samples.list(
 431             meter_name=metric_name,
 432             limit=1,
 433             q=[{"field": "resource_id", "op": "eq", "value": resource_id}],
 434         )
 435         return measures[0].counter_volume if measures else None