enrichment-coordinator-service/src/main/java/org/oransc/enrichment/tasks/ProducerSupervision.java

   1 /*-
   2  * ========================LICENSE_START=================================
   3  * O-RAN-SC
   4  * %%
   5  * Copyright (C) 2020 Nordix Foundation
   6  * %%
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ========================LICENSE_END===================================
  19  */
  20
  21 package org.oransc.enrichment.tasks;
  22
  23 import java.time.Duration;
  24
  25 import org.oransc.enrichment.configuration.ApplicationConfig;
  26 import org.oransc.enrichment.controllers.consumer.ConsumerCallbacks;
  27 import org.oransc.enrichment.controllers.producer.ProducerCallbacks;
  28 import org.oransc.enrichment.repository.EiJob;
  29 import org.oransc.enrichment.repository.EiJobs;
  30 import org.oransc.enrichment.repository.EiProducer;
  31 import org.oransc.enrichment.repository.EiProducers;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34 import org.springframework.beans.factory.annotation.Autowired;
  35 import org.springframework.scheduling.annotation.EnableScheduling;
  36 import org.springframework.scheduling.annotation.Scheduled;
  37 import org.springframework.stereotype.Component;
  38
  39 import reactor.core.publisher.Flux;
  40 import reactor.core.publisher.Mono;
  41 import reactor.util.retry.Retry;
  42
  43 /**
  44  * Regularly checks the availability of the EI Producers
  45  */
  46 @Component
  47 @EnableScheduling
  48 @SuppressWarnings("squid:S2629") // Invoke method(s) only conditionally
  49 public class ProducerSupervision {
  50     private static final Logger logger = LoggerFactory.getLogger(ProducerSupervision.class);
  51
  52     private final EiProducers eiProducers;
  53     private final EiJobs eiJobs;
  54     private final ProducerCallbacks producerCallbacks;
  55     private final ConsumerCallbacks consumerCallbacks;
  56
  57     @Autowired
  58     public ProducerSupervision(ApplicationConfig applicationConfig, EiProducers eiProducers, EiJobs eiJobs,
  59         ProducerCallbacks producerCallbacks, ConsumerCallbacks consumerCallbacks) {
  60         this.eiProducers = eiProducers;
  61         this.eiJobs = eiJobs;
  62         this.producerCallbacks = producerCallbacks;
  63         this.consumerCallbacks = consumerCallbacks;
  64     }
  65
  66     @Scheduled(fixedRate = 1000 * 60 * 5)
  67     public void checkAllProducers() {
  68         logger.debug("Checking producers starting");
  69         createTask().subscribe(null, null, () -> logger.debug("Checking all Producers completed"));
  70     }
  71
  72     public Flux<EiProducer> createTask() {
  73         return Flux.fromIterable(eiProducers.getAllProducers()) //
  74             .flatMap(this::checkOneProducer);
  75     }
  76
  77     private Mono<EiProducer> checkOneProducer(EiProducer producer) {
  78         return this.producerCallbacks.healthCheck(producer) //
  79             .onErrorResume(throwable -> {
  80                 handleNonRespondingProducer(throwable, producer);
  81                 return Mono.empty();
  82             })//
  83             .doOnNext(response -> handleRespondingProducer(response, producer))
  84             .flatMap(response -> checkProducerJobs(producer)) //
  85             .flatMap(responses -> Mono.just(producer));
  86     }
  87
  88     private Mono<?> checkProducerJobs(EiProducer producer) {
  89         return getEiJobs(producer) //
  90             .filter(eiJob -> !producer.isJobEnabled(eiJob)) //
  91             .flatMap(eiJob -> startEiJob(producer, eiJob), 1) //
  92             .collectList() //
  93             .flatMapMany(eiJob -> consumerCallbacks.notifyJobStatus(producer.getEiTypes())) //
  94             .collectList();
  95     }
  96
  97     private Mono<String> startEiJob(EiProducer producer, EiJob eiJob) {
  98         Retry retrySpec = Retry.fixedDelay(1, Duration.ofSeconds(1));
  99         return producerCallbacks.startEiJob(producer, eiJob, retrySpec);
 100     }
 101
 102     private Flux<EiJob> getEiJobs(EiProducer producer) {
 103         return Flux.fromIterable(producer.getEiTypes()) //
 104             .flatMap(eiType -> Flux.fromIterable(eiJobs.getJobsForType(eiType)));
 105     }
 106
 107     private void handleNonRespondingProducer(Throwable throwable, EiProducer producer) {
 108         logger.warn("Unresponsive producer: {} exception: {}", producer.getId(), throwable.getMessage());
 109         producer.setAliveStatus(false);
 110         if (producer.isDead()) {
 111             this.eiProducers.deregisterProducer(producer);
 112         }
 113     }
 114
 115     private void handleRespondingProducer(String response, EiProducer producer) {
 116         logger.debug("{}", response);
 117         producer.setAliveStatus(true);
 118     }
 119
 120 }