cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/utils/SubscriptionEventCloudMapper.java

   1 /*
   2  *  ============LICENSE_START=======================================================
   3  *  Copyright (C) 2023 Nordix Foundation
   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  *
  17  *  SPDX-License-Identifier: Apache-2.0
  18  *  ============LICENSE_END=========================================================
  19  */
  20
  21 package org.onap.cps.ncmp.api.impl.utils;
  22
  23 import com.fasterxml.jackson.databind.ObjectMapper;
  24 import io.cloudevents.CloudEvent;
  25 import io.cloudevents.core.CloudEventUtils;
  26 import io.cloudevents.core.builder.CloudEventBuilder;
  27 import io.cloudevents.core.data.PojoCloudEventData;
  28 import io.cloudevents.jackson.PojoCloudEventDataMapper;
  29 import java.net.URI;
  30 import java.util.UUID;
  31 import lombok.AccessLevel;
  32 import lombok.NoArgsConstructor;
  33 import lombok.extern.slf4j.Slf4j;
  34 import org.onap.cps.ncmp.events.avcsubscription1_0_0.client_to_ncmp.SubscriptionEvent;
  35
  36 @NoArgsConstructor(access = AccessLevel.PRIVATE)
  37 @Slf4j
  38 public class SubscriptionEventCloudMapper {
  39
  40     private static final ObjectMapper objectMapper = new ObjectMapper();
  41
  42     private static String randomId = UUID.randomUUID().toString();
  43
  44     /**
  45      * Maps CloudEvent object to SubscriptionEvent.
  46      *
  47      * @param cloudEvent object.
  48      * @return SubscriptionEvent deserialized.
  49      */
  50     public static SubscriptionEvent toSubscriptionEvent(final CloudEvent cloudEvent) {
  51         final PojoCloudEventData<SubscriptionEvent> deserializedCloudEvent = CloudEventUtils
  52                 .mapData(cloudEvent, PojoCloudEventDataMapper.from(objectMapper, SubscriptionEvent.class));
  53         if (deserializedCloudEvent == null) {
  54             log.debug("No data found in the consumed event");
  55             return null;
  56         } else {
  57             final SubscriptionEvent subscriptionEvent = deserializedCloudEvent.getValue();
  58             log.debug("Consuming event {}", subscriptionEvent);
  59             return subscriptionEvent;
  60         }
  61     }
  62
  63     /**
  64      * Maps SubscriptionEvent to a CloudEvent.
  65      *
  66      * @param ncmpSubscriptionEvent object.
  67      * @param eventKey as String.
  68      * @return CloudEvent built.
  69      */
  70     public static CloudEvent toCloudEvent(
  71             final org.onap.cps.ncmp.events.avcsubscription1_0_0.ncmp_to_dmi.SubscriptionEvent ncmpSubscriptionEvent,
  72             final String eventKey, final String eventType) {
  73         try {
  74             return CloudEventBuilder.v1()
  75                     .withId(randomId)
  76                     .withSource(URI.create(ncmpSubscriptionEvent.getData().getSubscription().getClientID()))
  77                     .withType(eventType)
  78                     .withExtension("correlationid", eventKey)
  79                     .withDataSchema(URI.create("urn:cps:"
  80                             + org.onap.cps.ncmp.events.avcsubscription1_0_0.ncmp_to_dmi
  81                                     .SubscriptionEvent.class.getName() + ":1.0.0"))
  82                     .withData(objectMapper.writeValueAsBytes(ncmpSubscriptionEvent)).build();
  83         } catch (final Exception ex) {
  84             throw new CloudEventConstructionException("The Cloud Event could not be constructed", "Invalid object to "
  85                     + "serialize or required headers is missing", ex);
  86         }
  87     }
  88 }