X-Git-Url: https://osm.etsi.org/gitweb/?a=blobdiff_plain;f=osm_mon%2Fevaluator%2Fevaluator.py;h=cc9a8adb55acda56a2fec25bc7bd9c2814027903;hb=1b7145f6d0d3c0090b7a33b4972861ad9ed48631;hp=95919464c25770ff569901cad8c04c0d92c42cc5;hpb=de3d570360a0a31d3054a6ff72b09ae9f559b59c;p=osm%2FMON.git diff --git a/osm_mon/evaluator/evaluator.py b/osm_mon/evaluator/evaluator.py index 9591946..cc9a8ad 100644 --- a/osm_mon/evaluator/evaluator.py +++ b/osm_mon/evaluator/evaluator.py @@ -20,154 +20,75 @@ # 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 -import requests -from osm_common.dbbase import DbException +import peewee -from osm_mon.collector.backends.prometheus import OSM_METRIC_PREFIX -from osm_mon.core.common_db import CommonDbClient -from osm_mon.core.database import DatabaseManager, Alarm -from osm_mon.core.message_bus.producer import Producer +from osm_mon.core.config import Config +from osm_mon.core.message_bus_client import MessageBusClient +from osm_mon.core.models import Alarm from osm_mon.core.response import ResponseBuilder -from osm_mon.core.settings import Config +from osm_mon.evaluator.service import EvaluatorService, AlarmStatus log = logging.getLogger(__name__) class Evaluator: - def __init__(self): - self.common_db = CommonDbClient() - self.plugins = [] - self.database_manager = DatabaseManager() - self.database_manager.create_tables() - self.queue = multiprocessing.Queue() - 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 - cfg = Config.instance() - 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 = cfg.OSMMON_PROMETHEUS_URL + "/api/v1/query?" + query_section - log.info("Querying Prometheus: %s", request_url) - r = requests.get(request_url) - if r.status_code == 200: - json_response = r.json() - if json_response['status'] == 'success': - result = json_response['data']['result'] - if len(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) - elif alarm.operation.upper() == 'LT': - if metric_value < alarm.threshold: - self.queue.put(alarm) - else: - log.warning("No metric result for alarm %s", alarm.id) - else: - log.warning("Prometheus response is not success. Got status %s", json_response['status']) - else: - log.warning("Error contacting Prometheus. Got status code %s: %s", r.status_code, r.text) + def __init__(self, config: Config, loop=None): + self.conf = config + if not loop: + loop = asyncio.get_event_loop() + self.loop = loop + self.service = EvaluatorService(config) + self.msg_bus = MessageBusClient(config) def evaluate_forever(self): log.debug('evaluate_forever') - cfg = Config.instance() 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') + alarms_tuples = self.service.evaluate_alarms() processes = [] - for alarm in Alarm.select(): - try: - vnfr = self.common_db.get_vnfr(alarm.nsr_id, alarm.vnf_member_index) - except DbException: - log.exception("Error getting vnfr: ") - continue - vnfd = self.common_db.get_vnfd(vnfr['vnfd-id']) - try: - vdur = next(filter(lambda vdur: vdur['name'] == alarm.vdur_name, vnfr['vdur'])) - except StopIteration: - log.warning("No vdur found with name %s for alarm %s", alarm.vdur_name, alarm.id) - continue - vdu = next(filter(lambda vdu: vdu['id'] == vdur['vdu-id-ref'], vnfd['vdu'])) - vnf_monitoring_param = next( - filter(lambda param: param['id'] == alarm.monitoring_param, vnfd['monitoring-param'])) - nsr_id = vnfr['nsr-id-ref'] - vnf_member_index = vnfr['member-vnf-index-ref'] - vdur_name = vdur['name'] - if 'vdu-monitoring-param' in vnf_monitoring_param: - vdu_monitoring_param = next(filter( - lambda param: param['id'] == vnf_monitoring_param['vdu-monitoring-param'][ - 'vdu-monitoring-param-ref'], vdu['monitoring-param'])) - nfvi_metric = vdu_monitoring_param['nfvi-metric'] - - p = multiprocessing.Process(target=self._evaluate_metric, - args=(nsr_id, - vnf_member_index, - vdur_name, - nfvi_metric, - 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_metric, - args=(nsr_id, - vnf_member_index, - vdur_name, - vnf_metric_name, - alarm)) - processes.append(p) - p.start() - if 'vnf-metric' in vnf_monitoring_param: - log.warning("vnf-metric is not currently supported.") - continue - - for process in processes: - process.join() - triggered_alarms = [] - while not self.queue.empty(): - triggered_alarms.append(self.queue.get()) - for alarm in triggered_alarms: - self.notify_alarm(alarm) + for alarm, status in alarms_tuples: p = multiprocessing.Process(target=self.notify_alarm, - args=(alarm,)) + args=(alarm, status)) p.start() + processes.append(p) + for process in processes: + process.join(timeout=10) - 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() + tags = {} + for tag in alarm.tags: + tags[tag.name] = tag.value 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.uuid, - vdu_name=alarm.vdur_name, - vnf_member_index=alarm.vnf_member_index, - ns_id=alarm.nsr_id, - metric_name=alarm.monitoring_param, + metric_name=alarm.metric, operation=alarm.operation, threshold_value=alarm.threshold, sev=alarm.severity, - status='alarm', - 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) + status=status.value, + date=now, + tags=tags)