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 import org.onap.cps.spi.exceptions.CloudEventConstructionException;
  36
  37 @NoArgsConstructor(access = AccessLevel.PRIVATE)
  38 @Slf4j
  39 public class SubscriptionEventCloudMapper {
  40
  41     private static final ObjectMapper objectMapper = new ObjectMapper();
  42
  43     private static String randomId = UUID.randomUUID().toString();
  44
  45     /**
  46      * Maps CloudEvent object to SubscriptionEvent.
  47      *
  48      * @param cloudEvent object.
  49      * @return SubscriptionEvent deserialized.
  50      */
  51     public static SubscriptionEvent toSubscriptionEvent(final CloudEvent cloudEvent) {
  52         final PojoCloudEventData<SubscriptionEvent> deserializedCloudEvent = CloudEventUtils
  53                 .mapData(cloudEvent, PojoCloudEventDataMapper.from(objectMapper, SubscriptionEvent.class));
  54         if (deserializedCloudEvent == null) {
  55             log.debug("No data found in the consumed event");
  56             return null;
  57         } else {
  58             final SubscriptionEvent subscriptionEvent = deserializedCloudEvent.getValue();
  59             log.debug("Consuming event {}", subscriptionEvent);
  60             return subscriptionEvent;
  61         }
  62     }
  63
  64     /**
  65      * Maps SubscriptionEvent to a CloudEvent.
  66      *
  67      * @param ncmpSubscriptionEvent object.
  68      * @param eventKey as String.
  69      * @return CloudEvent built.
  70      */
  71     public static CloudEvent toCloudEvent(
  72             final org.onap.cps.ncmp.events.avcsubscription1_0_0.ncmp_to_dmi.SubscriptionEvent ncmpSubscriptionEvent,
  73             final String eventKey, final String eventType) {
  74         try {
  75             return CloudEventBuilder.v1()
  76                     .withId(randomId)
  77                     .withSource(URI.create(ncmpSubscriptionEvent.getData().getSubscription().getClientID()))
  78                     .withType(eventType)
  79                     .withExtension("correlationid", eventKey)
  80                     .withDataSchema(URI.create("urn:cps:"
  81                             + org.onap.cps.ncmp.events.avcsubscription1_0_0.ncmp_to_dmi
  82                                     .SubscriptionEvent.class.getName() + ":1.0.0"))
  83                     .withData(objectMapper.writeValueAsBytes(ncmpSubscriptionEvent)).build();
  84         } catch (final Exception ex) {
  85             throw new CloudEventConstructionException("The Cloud Event could not be constructed", "Invalid object to "
  86                     + "serialize or required headers is missing", ex);
  87         }
  88     }
  89 }