X-Git-Url: https://osm.etsi.org/gitweb/?a=blobdiff_plain;f=osm_mon%2Fevaluator%2Fevaluator.py;h=24e8e43f0adbda6793cdbae672ee2cfd684800fe;hb=refs%2Fchanges%2F00%2F7400%2F2;hp=b040198c94f1e0623246015baa73408bf701002a;hpb=51f4486b06781541ee15ea332261247ed3e930f6;p=osm%2FMON.git diff --git a/osm_mon/evaluator/evaluator.py b/osm_mon/evaluator/evaluator.py index b040198..24e8e43 100644 --- a/osm_mon/evaluator/evaluator.py +++ b/osm_mon/evaluator/evaluator.py @@ -20,79 +20,99 @@ # For those usages not covered by the Apache License, Version 2.0 please # contact: bdiaz@whitestack.com or glavado@whitestack.com ## -import json +import asyncio import logging import multiprocessing import time +from enum import Enum +import peewee +import requests from osm_common.dbbase import DbException -from osm_mon.collector.collector import VIM_COLLECTORS -from osm_mon.collector.collectors.juju import VCACollector +from osm_mon.collector.backends.prometheus import OSM_METRIC_PREFIX from osm_mon.core.common_db import CommonDbClient +from osm_mon.core.config import Config from osm_mon.core.database import DatabaseManager, Alarm -from osm_mon.core.message_bus.producer import Producer +from osm_mon.core.message_bus_client import MessageBusClient from osm_mon.core.response import ResponseBuilder -from osm_mon.core.settings import Config log = logging.getLogger(__name__) +class AlarmStatus(Enum): + ALARM = 'alarm' + OK = 'ok' + INSUFFICIENT = 'insufficient-data' + + class Evaluator: - def __init__(self): - self.common_db = CommonDbClient() + + def __init__(self, config: Config, loop=None): + self.conf = config + if not loop: + loop = asyncio.get_event_loop() + self.loop = loop + self.common_db = CommonDbClient(self.conf) self.plugins = [] - self.database_manager = DatabaseManager() + self.database_manager = DatabaseManager(self.conf) self.database_manager.create_tables() self.queue = multiprocessing.Queue() - - def _evaluate_vim_metric(self, - nsr_id: str, - vnf_member_index: int, - vdur_name: str, - nfvi_metric_name: str, - vim_account_id: str, - alarm: Alarm): - vim_type = self.database_manager.get_vim_type(vim_account_id) - if vim_type in VIM_COLLECTORS: - collector = VIM_COLLECTORS[vim_type](vim_account_id) - metric = collector.collect_one(nsr_id, vnf_member_index, vdur_name, nfvi_metric_name) - if alarm.operation.upper() == 'GT': - if metric.value > alarm.threshold: - self.queue.put(alarm) - elif alarm.operation.upper() == 'LT': - if metric.value < alarm.threshold: - self.queue.put(alarm) - + self.msg_bus = MessageBusClient(config) + + def _evaluate_metric(self, + nsr_id: str, + vnf_member_index: int, + vdur_name: str, + metric_name: str, + alarm: Alarm): + log.debug("_evaluate_metric") + # TODO: Refactor to fit backend plugin model + query_section = "query={0}{{ns_id=\"{1}\",vdu_name=\"{2}\",vnf_member_index=\"{3}\"}}".format( + OSM_METRIC_PREFIX + metric_name, nsr_id, vdur_name, vnf_member_index) + request_url = self.conf.get('prometheus', 'url') + "/api/v1/query?" + query_section + log.info("Querying Prometheus: %s", request_url) + r = requests.get(request_url, timeout=int(self.conf.get('global', 'request_timeout'))) + if r.status_code == 200: + json_response = r.json() + if json_response['status'] == 'success': + result = json_response['data']['result'] + if result: + metric_value = float(result[0]['value'][1]) + log.info("Metric value: %s", metric_value) + if alarm.operation.upper() == 'GT': + if metric_value > alarm.threshold: + self.queue.put((alarm, AlarmStatus.ALARM)) + else: + self.queue.put((alarm, AlarmStatus.OK)) + elif alarm.operation.upper() == 'LT': + if metric_value < alarm.threshold: + self.queue.put((alarm, AlarmStatus.ALARM)) + else: + self.queue.put((alarm, AlarmStatus.OK)) + else: + log.warning("No metric result for alarm %s", alarm.id) + self.queue.put((alarm, AlarmStatus.INSUFFICIENT)) + + else: + log.warning("Prometheus response is not success. Got status %s", json_response['status']) else: - log.debug("vimtype %s is not supported.", vim_type) - - def _evaluate_vca_metric(self, - nsr_id: str, - vnf_member_index: int, - vdur_name: str, - vnf_metric_name: str, - alarm: Alarm): - collector = VCACollector() - metric = collector.collect_one(nsr_id, vnf_member_index, vdur_name, vnf_metric_name) - if alarm.operation.upper() == 'GT': - if metric.value > alarm.threshold: - self.queue.put(alarm) - elif alarm.operation.upper() == 'LT': - if metric.value < alarm.threshold: - self.queue.put(alarm) + log.warning("Error contacting Prometheus. Got status code %s: %s", r.status_code, r.text) def evaluate_forever(self): - log.debug('collect_forever') - cfg = Config.instance() + log.debug('evaluate_forever') while True: try: self.evaluate() - time.sleep(cfg.OSMMON_EVALUATOR_INTERVAL) + time.sleep(int(self.conf.get('evaluator', 'interval'))) + except peewee.PeeweeException: + log.exception("Database error evaluating alarms: ") + raise except Exception: log.exception("Error evaluating alarms") def evaluate(self): + log.debug('evaluate') processes = [] for alarm in Alarm.select(): try: @@ -118,19 +138,17 @@ class Evaluator: 'vdu-monitoring-param-ref'], vdu['monitoring-param'])) nfvi_metric = vdu_monitoring_param['nfvi-metric'] - vim_account_id = self.common_db.get_vim_account_id(nsr_id, vnf_member_index) - p = multiprocessing.Process(target=self._evaluate_vim_metric, + p = multiprocessing.Process(target=self._evaluate_metric, args=(nsr_id, vnf_member_index, vdur_name, nfvi_metric, - vim_account_id, alarm)) processes.append(p) p.start() if 'vdu-metric' in vnf_monitoring_param: vnf_metric_name = vnf_monitoring_param['vdu-metric']['vdu-metric-name-ref'] - p = multiprocessing.Process(target=self._evaluate_vca_metric, + p = multiprocessing.Process(target=self._evaluate_metric, args=(nsr_id, vnf_member_index, vdur_name, @@ -139,27 +157,38 @@ class Evaluator: processes.append(p) p.start() if 'vnf-metric' in vnf_monitoring_param: - log.warning("vnf-metric is not currently supported.") - continue + vnf_metric_name = vnf_monitoring_param['vnf-metric']['vnf-metric-name-ref'] + p = multiprocessing.Process(target=self._evaluate_metric, + args=(nsr_id, + vnf_member_index, + '', + vnf_metric_name, + alarm)) + processes.append(p) + p.start() for process in processes: - process.join() - triggered_alarms = [] + process.join(timeout=10) + alarms_tuples = [] while not self.queue.empty(): - triggered_alarms.append(self.queue.get()) - for alarm in triggered_alarms: - self.notify_alarm(alarm) + alarms_tuples.append(self.queue.get()) + for alarm, status in alarms_tuples: p = multiprocessing.Process(target=self.notify_alarm, - args=(alarm,)) + args=(alarm, status)) p.start() - def notify_alarm(self, alarm: Alarm): + def notify_alarm(self, alarm: Alarm, status: AlarmStatus): + log.debug("notify_alarm") + resp_message = self._build_alarm_response(alarm, status) + log.info("Sent alarm notification: %s", resp_message) + self.loop.run_until_complete(self.msg_bus.aiowrite('alarm_response', 'notify_alarm', resp_message)) + + def _build_alarm_response(self, alarm: Alarm, status: AlarmStatus): response = ResponseBuilder() now = time.strftime("%d-%m-%Y") + " " + time.strftime("%X") - # Generate and send response - resp_message = response.generate_response( + return response.generate_response( 'notify_alarm', - alarm_id=alarm.id, + alarm_id=alarm.uuid, vdu_name=alarm.vdur_name, vnf_member_index=alarm.vnf_member_index, ns_id=alarm.nsr_id, @@ -167,9 +196,5 @@ class Evaluator: operation=alarm.operation, threshold_value=alarm.threshold, sev=alarm.severity, - status='alarm', + status=status.value, date=now) - producer = Producer() - producer.send(topic='alarm_response', key='notify_alarm', value=json.dumps(resp_message)) - producer.flush() - log.info("Sent alarm notification: %s", resp_message)