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