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 org.oransc.enrichment.clients.AsyncRestClient;
  24 import org.oransc.enrichment.clients.AsyncRestClientFactory;
  25 import org.oransc.enrichment.configuration.ApplicationConfig;
  26 import org.oransc.enrichment.controllers.consumer.ConsumerCallbacks;
  27 import org.oransc.enrichment.repository.EiJobs;
  28 import org.oransc.enrichment.repository.EiProducer;
  29 import org.oransc.enrichment.repository.EiProducers;
  30 import org.oransc.enrichment.repository.EiTypes;
  31 import org.slf4j.Logger;
  32 import org.slf4j.LoggerFactory;
  33 import org.springframework.beans.factory.annotation.Autowired;
  34 import org.springframework.scheduling.annotation.EnableScheduling;
  35 import org.springframework.scheduling.annotation.Scheduled;
  36 import org.springframework.stereotype.Component;
  37
  38 import reactor.core.publisher.Flux;
  39 import reactor.core.publisher.Mono;
  40
  41 /**
  42  * Regularly checks the availability of the EI Producers
  43  */
  44 @Component
  45 @EnableScheduling
  46 @SuppressWarnings("squid:S2629") // Invoke method(s) only conditionally
  47 public class ProducerSupervision {
  48     private static final Logger logger = LoggerFactory.getLogger(ProducerSupervision.class);
  49
  50     private final EiProducers eiProducers;
  51     private final EiJobs eiJobs;
  52     private final EiTypes eiTypes;
  53     private final AsyncRestClient restClient;
  54     private final ConsumerCallbacks consumerCallbacks;
  55
  56     @Autowired
  57     public ProducerSupervision(ApplicationConfig applicationConfig, EiProducers eiProducers, EiJobs eiJobs,
  58         EiTypes eiTypes, ConsumerCallbacks consumerCallbacks) {
  59         AsyncRestClientFactory restClientFactory = new AsyncRestClientFactory(applicationConfig.getWebClientConfig());
  60         this.restClient = restClientFactory.createRestClientNoHttpProxy("");
  61         this.eiJobs = eiJobs;
  62         this.eiProducers = eiProducers;
  63         this.eiTypes = eiTypes;
  64         this.consumerCallbacks = consumerCallbacks;
  65     }
  66
  67     @Scheduled(fixedRate = 1000 * 60 * 5)
  68     public void checkAllProducers() {
  69         logger.debug("Checking producers starting");
  70         createTask().subscribe(null, null, () -> logger.debug("Checking all Producers completed"));
  71     }
  72
  73     public Flux<EiProducer> createTask() {
  74         return Flux.fromIterable(eiProducers.getAllProducers()) //
  75             .flatMap(this::checkOneProducer);
  76     }
  77
  78     private Mono<EiProducer> checkOneProducer(EiProducer producer) {
  79         return restClient.get(producer.getProducerSupervisionCallbackUrl()) //
  80             .onErrorResume(throwable -> {
  81                 handleNonRespondingProducer(throwable, producer);
  82                 return Mono.empty();
  83             })//
  84             .doOnNext(response -> handleRespondingProducer(response, producer))
  85             .flatMap(response -> Mono.just(producer));
  86     }
  87
  88     private void handleNonRespondingProducer(Throwable throwable, EiProducer producer) {
  89         logger.warn("Unresponsive producer: {} exception: {}", producer.getId(), throwable.getMessage());
  90         producer.setAliveStatus(false);
  91         if (producer.isDead()) {
  92             this.eiProducers.deregisterProducer(producer, this.eiTypes);
  93             this.consumerCallbacks.notifyConsumersProducerDeleted(producer);
  94         }
  95     }
  96
  97     private void handleRespondingProducer(String response, EiProducer producer) {
  98         logger.debug("{}", response);
  99         producer.setAliveStatus(true);
 100     }
 101
 102 }