src/main/java/org/onap/cps/temporal/controller/event/listener/kafka/DataUpdatedEventListener.java

   1 /*
   2  * ============LICENSE_START=======================================================
   3  * Copyright (c) 2021 Bell Canada.
   4  * ================================================================================
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *        http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  * ============LICENSE_END=========================================================
  17  */
  18
  19 package org.onap.cps.temporal.controller.event.listener.kafka;
  20
  21 import static org.onap.cps.temporal.controller.event.listener.exception.InvalidEventEnvelopException.InvalidField.ErrorType.MISSING;
  22 import static org.onap.cps.temporal.controller.event.listener.exception.InvalidEventEnvelopException.InvalidField.ErrorType.UNEXPECTED;
  23
  24 import java.net.URI;
  25 import java.net.URISyntaxException;
  26 import lombok.extern.slf4j.Slf4j;
  27 import org.onap.cps.event.model.CpsDataUpdatedEvent;
  28 import org.onap.cps.temporal.controller.event.listener.exception.EventListenerException;
  29 import org.onap.cps.temporal.controller.event.listener.exception.InvalidEventEnvelopException;
  30 import org.onap.cps.temporal.controller.event.model.CpsDataUpdatedEventMapper;
  31 import org.onap.cps.temporal.service.NetworkDataService;
  32 import org.springframework.kafka.annotation.KafkaListener;
  33 import org.springframework.stereotype.Component;
  34 import org.springframework.util.StringUtils;
  35
  36 /**
  37  * Listener for data updated events.
  38  */
  39 @Component
  40 @Slf4j
  41 public class DataUpdatedEventListener {
  42
  43     private static final URI EVENT_SOURCE;
  44
  45     static {
  46         try {
  47             EVENT_SOURCE = new URI("urn:cps:org.onap.cps");
  48         } catch (final URISyntaxException e) {
  49             throw new EventListenerException("Invalid URI for event source.", e);
  50         }
  51     }
  52
  53     private static final String EVENT_TYPE = "org.onap.cps.data-updated-event";
  54
  55     private final NetworkDataService networkDataService;
  56     private final CpsDataUpdatedEventMapper cpsDataUpdatedEventMapper;
  57
  58     /**
  59      * Constructor.
  60      */
  61     public DataUpdatedEventListener(
  62             final NetworkDataService networkDataService, final CpsDataUpdatedEventMapper cpsDataUpdatedEventMapper) {
  63         this.networkDataService = networkDataService;
  64         this.cpsDataUpdatedEventMapper = cpsDataUpdatedEventMapper;
  65     }
  66
  67     /**
  68      * Consume the specified event.
  69      *
  70      * @param cpsDataUpdatedEvent the data updated event to be consumed and persisted.
  71      */
  72     @KafkaListener(topics = "${app.listener.data-updated.topic}", errorHandler = "dataUpdatedEventListenerErrorHandler")
  73     public void consume(final CpsDataUpdatedEvent cpsDataUpdatedEvent) {
  74
  75         log.debug("Receiving {} ...", cpsDataUpdatedEvent);
  76
  77         // Validate event envelop
  78         validateEventEnvelop(cpsDataUpdatedEvent);
  79
  80         // Map event to entity
  81         final var networkData = this.cpsDataUpdatedEventMapper.eventToEntity(cpsDataUpdatedEvent);
  82         log.debug("Persisting {} ...", networkData);
  83
  84         // Persist entity
  85         final var persistedNetworkData = this.networkDataService.addNetworkData(networkData);
  86         log.debug("Persisted {}", persistedNetworkData);
  87
  88     }
  89
  90     private void validateEventEnvelop(final CpsDataUpdatedEvent cpsDataUpdatedEvent) {
  91
  92         final var invalidEventEnvelopException = new InvalidEventEnvelopException("Validation failure");
  93
  94         // Schema
  95         if (cpsDataUpdatedEvent.getSchema() == null) {
  96             invalidEventEnvelopException.addInvalidField(
  97                     new InvalidEventEnvelopException.InvalidField(
  98                             MISSING, "schema", null,
  99                             CpsDataUpdatedEvent.Schema.URN_CPS_ORG_ONAP_CPS_DATA_UPDATED_EVENT_SCHEMA_1_1_0_SNAPSHOT
 100                                     .value()));
 101         }
 102         // Id
 103         if (!StringUtils.hasText(cpsDataUpdatedEvent.getId())) {
 104             invalidEventEnvelopException.addInvalidField(
 105                     new InvalidEventEnvelopException.InvalidField(
 106                             MISSING, "id", null, null));
 107         }
 108         // Source
 109         if (cpsDataUpdatedEvent.getSource() == null || !cpsDataUpdatedEvent.getSource().equals(EVENT_SOURCE)) {
 110             invalidEventEnvelopException.addInvalidField(
 111                     new InvalidEventEnvelopException.InvalidField(
 112                             UNEXPECTED, "source",
 113                             cpsDataUpdatedEvent.getSource() != null
 114                                     ? cpsDataUpdatedEvent.getSource().toString() : null, EVENT_SOURCE.toString()));
 115         }
 116         // Type
 117         if (cpsDataUpdatedEvent.getType() == null || !cpsDataUpdatedEvent.getType().equals(EVENT_TYPE)) {
 118             invalidEventEnvelopException.addInvalidField(
 119                     new InvalidEventEnvelopException.InvalidField(
 120                             UNEXPECTED, "type", cpsDataUpdatedEvent.getType(), EVENT_TYPE));
 121         }
 122
 123         if (invalidEventEnvelopException.hasInvalidFields()) {
 124             throw invalidEventEnvelopException;
 125         }
 126
 127     }
 128
 129 }