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.core.common_db import CommonDbClient
  31 from osm_mon.core.database import DatabaseManager
  32 from osm_mon.core.settings import Config
  33
  34 log = logging.getLogger(__name__)
  35
  36 VIM_COLLECTORS = {
  37     "openstack": OpenstackCollector
  38 }
  39 METRIC_BACKENDS = [
  40     PrometheusBackend
  41 ]
  42
  43
  44 class Collector:
  45     def __init__(self):
  46         self.common_db = CommonDbClient()
  47         self.plugins = []
  48         self.database_manager = DatabaseManager()
  49         self.database_manager.create_tables()
  50         self.queue = multiprocessing.Queue()
  51
  52     def init_backends(self):
  53         for backend in METRIC_BACKENDS:
  54             self.plugins.append(backend())
  55
  56     def collect_forever(self):
  57         log.debug('collect_forever')
  58         cfg = Config.instance()
  59         while True:
  60             try:
  61                 self.collect_metrics()
  62                 time.sleep(cfg.OSMMON_COLLECTOR_INTERVAL)
  63             except Exception:
  64                 log.exception("Error collecting metrics")
  65
  66     def _collect_vim_metrics(self, vnfr: dict, vim_account_id: str):
  67         # TODO(diazb) Add support for vrops and aws
  68         vim_type = self.database_manager.get_vim_type(vim_account_id)
  69         if vim_type in VIM_COLLECTORS:
  70             collector = VIM_COLLECTORS[vim_type](vim_account_id)
  71             metrics = collector.collect(vnfr)
  72             for metric in metrics:
  73                 self.queue.put(metric)
  74         else:
  75             log.debug("vimtype %s is not supported.", vim_type)
  76
  77     def _collect_vca_metrics(self, vnfr: dict):
  78         log.debug('_collect_vca_metrics')
  79         log.debug('vnfr: %s', vnfr)
  80         vca_collector = VCACollector()
  81         metrics = vca_collector.collect(vnfr)
  82         for metric in metrics:
  83             self.queue.put(metric)
  84
  85     def collect_metrics(self):
  86         vnfrs = self.common_db.get_vnfrs()
  87         processes = []
  88         for vnfr in vnfrs:
  89             nsr_id = vnfr['nsr-id-ref']
  90             vnf_member_index = vnfr['member-vnf-index-ref']
  91             vim_account_id = self.common_db.get_vim_account_id(nsr_id, vnf_member_index)
  92             p = multiprocessing.Process(target=self._collect_vim_metrics,
  93                                         args=(vnfr, vim_account_id))
  94             processes.append(p)
  95             p.start()
  96             p = multiprocessing.Process(target=self._collect_vca_metrics,
  97                                         args=(vnfr,))
  98             processes.append(p)
  99             p.start()
 100         for process in processes:
 101             process.join()
 102         metrics = []
 103         while not self.queue.empty():
 104             metrics.append(self.queue.get())
 105         for plugin in self.plugins:
 106             plugin.handle(metrics)