osm_mon/collector/collector.py

   1 # -*- coding: utf-8 -*-
   2
   3 # Copyright 2018 Whitestack, LLC
   4 # *************************************************************
   5
   6 # This file is part of OSM Monitoring module
   7 # All Rights Reserved to Whitestack, LLC
   8
   9 # Licensed under the Apache License, Version 2.0 (the "License"); you may
  10 # not use this file except in compliance with the License. You may obtain
  11 # a copy of the License at
  12
  13 #         http://www.apache.org/licenses/LICENSE-2.0
  14
  15 # Unless required by applicable law or agreed to in writing, software
  16 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  17 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  18 # License for the specific language governing permissions and limitations
  19 # under the License.
  20 # For those usages not covered by the Apache License, Version 2.0 please
  21 # contact: bdiaz@whitestack.com or glavado@whitestack.com
  22 ##
  23 import logging
  24 import multiprocessing
  25 import time
  26
  27 from osm_mon.collector.backends.prometheus import PrometheusBackend
  28 from osm_mon.collector.collectors.juju import VCACollector
  29 from osm_mon.collector.collectors.openstack import OpenstackCollector
  30 from osm_mon.collector.collectors.vmware import VMwareCollector
  31 from osm_mon.core.common_db import CommonDbClient
  32 from osm_mon.core.database import DatabaseManager
  33 from osm_mon.core.settings import Config
  34
  35 log = logging.getLogger(__name__)
  36
  37 VIM_COLLECTORS = {
  38     "openstack": OpenstackCollector,
  39     "vmware": VMwareCollector
  40 }
  41 METRIC_BACKENDS = [
  42     PrometheusBackend
  43 ]
  44
  45
  46 class Collector:
  47     def __init__(self):
  48         self.common_db = CommonDbClient()
  49         self.plugins = []
  50         self.database_manager = DatabaseManager()
  51         self.database_manager.create_tables()
  52         self.queue = multiprocessing.Queue()
  53
  54     def init_backends(self):
  55         for backend in METRIC_BACKENDS:
  56             self.plugins.append(backend())
  57
  58     def collect_forever(self):
  59         log.debug('collect_forever')
  60         cfg = Config.instance()
  61         while True:
  62             try:
  63                 self.collect_metrics()
  64                 time.sleep(cfg.OSMMON_COLLECTOR_INTERVAL)
  65             except Exception:
  66                 log.exception("Error collecting metrics")
  67
  68     def _collect_vim_metrics(self, vnfr: dict, vim_account_id: str):
  69         # TODO(diazb) Add support for vrops and aws
  70         vim_type = self.database_manager.get_vim_type(vim_account_id)
  71         if vim_type in VIM_COLLECTORS:
  72             collector = VIM_COLLECTORS[vim_type](vim_account_id)
  73             metrics = collector.collect(vnfr)
  74             for metric in metrics:
  75                 self.queue.put(metric)
  76         else:
  77             log.debug("vimtype %s is not supported.", vim_type)
  78
  79     def _collect_vca_metrics(self, vnfr: dict):
  80         log.debug('_collect_vca_metrics')
  81         log.debug('vnfr: %s', vnfr)
  82         vca_collector = VCACollector()
  83         metrics = vca_collector.collect(vnfr)
  84         for metric in metrics:
  85             self.queue.put(metric)
  86
  87     def collect_metrics(self):
  88         vnfrs = self.common_db.get_vnfrs()
  89         processes = []
  90         for vnfr in vnfrs:
  91             nsr_id = vnfr['nsr-id-ref']
  92             vnf_member_index = vnfr['member-vnf-index-ref']
  93             vim_account_id = self.common_db.get_vim_account_id(nsr_id, vnf_member_index)
  94             p = multiprocessing.Process(target=self._collect_vim_metrics,
  95                                         args=(vnfr, vim_account_id))
  96             processes.append(p)
  97             p.start()
  98             p = multiprocessing.Process(target=self._collect_vca_metrics,
  99                                         args=(vnfr,))
 100             processes.append(p)
 101             p.start()
 102         for process in processes:
 103             process.join()
 104         metrics = []
 105         while not self.queue.empty():
 106             metrics.append(self.queue.get())
 107         for plugin in self.plugins:
 108             plugin.handle(metrics)