gerrit.onap Code Review - cps/ncmp-dmi-plugin.git/blob

   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.dmi.notifications.cmsubscription;
  22
  23 import io.cloudevents.CloudEvent;
  24 import java.util.ArrayList;
  25 import java.util.HashSet;
  26 import java.util.List;
  27 import java.util.Set;
  28 import lombok.RequiredArgsConstructor;
  29 import org.apache.kafka.clients.consumer.ConsumerRecord;
  30 import org.onap.cps.ncmp.dmi.notifications.mapper.CloudEventMapper;
  31 import org.onap.cps.ncmp.events.cmsubscription1_0_0.dmi_to_ncmp.CmSubscriptionDmiOutEvent;
  32 import org.onap.cps.ncmp.events.cmsubscription1_0_0.dmi_to_ncmp.Data;
  33 import org.onap.cps.ncmp.events.cmsubscription1_0_0.dmi_to_ncmp.SubscriptionStatus;
  34 import org.onap.cps.ncmp.events.cmsubscription1_0_0.ncmp_to_dmi.CmHandle;
  35 import org.onap.cps.ncmp.events.cmsubscription1_0_0.ncmp_to_dmi.CmSubscriptionDmiInEvent;
  36 import org.springframework.beans.factory.annotation.Value;
  37 import org.springframework.kafka.annotation.KafkaListener;
  38 import org.springframework.kafka.core.KafkaTemplate;
  39 import org.springframework.stereotype.Service;
  40
  41 @Service
  42 @RequiredArgsConstructor
  43 public class CmSubscriptionDmiInEventConsumer {
  44
  45     @Value("${app.dmi.avc.subscription-response-topic}")
  46     private String cmAvcSubscriptionResponseTopic;
  47     @Value("${dmi.service.name}")
  48     private String dmiName;
  49     private final KafkaTemplate<String, CloudEvent> cloudEventKafkaTemplate;
  50
  51     /**
  52      * Consume the specified event.
  53      *
  54      * @param cmSubscriptionDmiInCloudEvent the event to be consumed
  55      */
  56     @KafkaListener(topics = "${app.dmi.avc.subscription-topic}",
  57             containerFactory = "cloudEventConcurrentKafkaListenerContainerFactory")
  58     public void consumeCmSubscriptionDmiInEvent(
  59             final ConsumerRecord<String, CloudEvent> cmSubscriptionDmiInCloudEvent) {
  60         final CmSubscriptionDmiInEvent cmSubscriptionDmiInEvent =
  61                 CloudEventMapper.toTargetEvent(cmSubscriptionDmiInCloudEvent.value(), CmSubscriptionDmiInEvent.class);
  62         if (cmSubscriptionDmiInEvent != null) {
  63             final String eventKey = cmSubscriptionDmiInCloudEvent.value().getId();
  64             final String subscriptionType = cmSubscriptionDmiInCloudEvent.value().getType();
  65             if ("subscriptionCreated".equals(subscriptionType)) {
  66                 sendCmSubscriptionDmiOutEvent(eventKey, "subscriptionCreatedStatus",
  67                         formCmSubscriptionDmiOutEvent(cmSubscriptionDmiInEvent));
  68             } else if ("subscriptionDeleted".equals(subscriptionType)) {
  69                 sendCmSubscriptionDmiOutEvent(eventKey, "subscriptionDeletedStatus",
  70                         formCmSubscriptionDmiOutEvent(cmSubscriptionDmiInEvent));
  71             }
  72         }
  73     }
  74
  75     /**
  76      * Sends message to the configured topic.
  77      *
  78      * @param eventKey                  is the kafka message key
  79      * @param subscriptionType          is the type of subscription action
  80      * @param cmSubscriptionDmiOutEvent is the payload of the kafka message
  81      */
  82     public void sendCmSubscriptionDmiOutEvent(final String eventKey, final String subscriptionType,
  83             final CmSubscriptionDmiOutEvent cmSubscriptionDmiOutEvent) {
  84         cloudEventKafkaTemplate.send(cmAvcSubscriptionResponseTopic, eventKey,
  85                 CmSubscriptionDmiOutEventToCloudEventMapper.toCloudEvent(cmSubscriptionDmiOutEvent, subscriptionType,
  86                         dmiName));
  87     }
  88
  89     private CmSubscriptionDmiOutEvent formCmSubscriptionDmiOutEvent(
  90             final CmSubscriptionDmiInEvent cmSubscriptionDmiInEvent) {
  91         final CmSubscriptionDmiOutEvent cmSubscriptionDmiOutEvent = new CmSubscriptionDmiOutEvent();
  92         final Data cmSubscriptionDmiOutEventData = new Data();
  93         cmSubscriptionDmiOutEventData.setClientId(cmSubscriptionDmiInEvent.getData().getSubscription().getClientID());
  94         cmSubscriptionDmiOutEventData.setSubscriptionName(
  95                 cmSubscriptionDmiInEvent.getData().getSubscription().getName());
  96         cmSubscriptionDmiOutEventData.setDmiName(dmiName);
  97
  98         final List<CmHandle> cmHandles = cmSubscriptionDmiInEvent.getData().getPredicates().getTargets();
  99         cmSubscriptionDmiOutEventData.setSubscriptionStatus(populateSubscriptionStatus(extractCmHandleIds(cmHandles)));
 100         cmSubscriptionDmiOutEvent.setData(cmSubscriptionDmiOutEventData);
 101         return cmSubscriptionDmiOutEvent;
 102     }
 103
 104     private Set<String> extractCmHandleIds(final List<CmHandle> cmHandles) {
 105         final Set<String> cmHandleIds = new HashSet<>();
 106
 107         for (final CmHandle cmHandle : cmHandles) {
 108             cmHandleIds.add(cmHandle.getId());
 109         }
 110         return cmHandleIds;
 111     }
 112
 113     private List<SubscriptionStatus> populateSubscriptionStatus(final Set<String> cmHandleIds) {
 114         final List<SubscriptionStatus> subscriptionStatuses = new ArrayList<>();
 115         for (final String cmHandleId : cmHandleIds) {
 116             final SubscriptionStatus status = new SubscriptionStatus();
 117             status.setId(cmHandleId);
 118             status.setStatus(SubscriptionStatus.Status.ACCEPTED);
 119             subscriptionStatuses.add(status);
 120         }
 121         return subscriptionStatuses;
 122     }
 123
 124 }