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 import peewee
  28
  29 from osm_mon.collector.backends.prometheus import PrometheusBackend
  30 from osm_mon.collector.collectors.juju import VCACollector
  31 from osm_mon.collector.collectors.openstack import OpenstackCollector
  32 from osm_mon.collector.collectors.vmware import VMwareCollector
  33 from osm_mon.core.common_db import CommonDbClient
  34 from osm_mon.core.database import DatabaseManager
  35 from osm_mon.core.settings import Config
  36
  37 log = logging.getLogger(__name__)
  38
  39 VIM_COLLECTORS = {
  40     "openstack": OpenstackCollector,
  41     "vmware": VMwareCollector
  42 }
  43 METRIC_BACKENDS = [
  44     PrometheusBackend
  45 ]
  46
  47
  48 class Collector:
  49     def __init__(self):
  50         self.common_db = CommonDbClient()
  51         self.plugins = []
  52         self.database_manager = DatabaseManager()
  53         self.database_manager.create_tables()
  54         self.queue = multiprocessing.Queue()
  55         self._init_backends()
  56
  57     def collect_forever(self):
  58         log.debug('collect_forever')
  59         cfg = Config.instance()
  60         while True:
  61             try:
  62                 self.collect_metrics()
  63                 time.sleep(cfg.OSMMON_COLLECTOR_INTERVAL)
  64             except peewee.PeeweeException:
  65                 log.exception("Database error consuming message: ")
  66                 raise
  67             except Exception:
  68                 log.exception("Error collecting metrics")
  69
  70     def _collect_vim_metrics(self, vnfr: dict, vim_account_id: str):
  71         # TODO(diazb) Add support for vrops and aws
  72         vim_type = self.database_manager.get_vim_type(vim_account_id)
  73         if vim_type in VIM_COLLECTORS:
  74             collector = VIM_COLLECTORS[vim_type](vim_account_id)
  75             metrics = collector.collect(vnfr)
  76             for metric in metrics:
  77                 self.queue.put(metric)
  78         else:
  79             log.debug("vimtype %s is not supported.", vim_type)
  80
  81     def _collect_vca_metrics(self, vnfr: dict):
  82         log.debug('_collect_vca_metrics')
  83         log.debug('vnfr: %s', vnfr)
  84         vca_collector = VCACollector()
  85         metrics = vca_collector.collect(vnfr)
  86         for metric in metrics:
  87             self.queue.put(metric)
  88
  89     def collect_metrics(self):
  90         vnfrs = self.common_db.get_vnfrs()
  91         processes = []
  92         for vnfr in vnfrs:
  93             nsr_id = vnfr['nsr-id-ref']
  94             vnf_member_index = vnfr['member-vnf-index-ref']
  95             vim_account_id = self.common_db.get_vim_account_id(nsr_id, vnf_member_index)
  96             p = multiprocessing.Process(target=self._collect_vim_metrics,
  97                                         args=(vnfr, vim_account_id))
  98             processes.append(p)
  99             p.start()
 100             p = multiprocessing.Process(target=self._collect_vca_metrics,
 101                                         args=(vnfr,))
 102             processes.append(p)
 103             p.start()
 104         for process in processes:
 105             process.join()
 106         metrics = []
 107         while not self.queue.empty():
 108             metrics.append(self.queue.get())
 109         for plugin in self.plugins:
 110             plugin.handle(metrics)
 111
 112     def _init_backends(self):
 113         for backend in METRIC_BACKENDS:
 114             self.plugins.append(backend())