cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/events/cmsubscription/service/CmNotificationSubscriptionHandlerServiceImpl.java

   1 /*
   2  * ============LICENSE_START=======================================================
   3  *  Copyright (C) 2024 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.events.cmsubscription.service;
  22
  23 import java.util.ArrayList;
  24 import java.util.List;
  25 import java.util.Map;
  26 import java.util.Set;
  27 import java.util.stream.Collectors;
  28 import lombok.RequiredArgsConstructor;
  29 import org.onap.cps.ncmp.api.impl.events.cmsubscription.CmNotificationSubscriptionDelta;
  30 import org.onap.cps.ncmp.api.impl.events.cmsubscription.CmNotificationSubscriptionEventsHandler;
  31 import org.onap.cps.ncmp.api.impl.events.cmsubscription.CmNotificationSubscriptionMappersHandler;
  32 import org.onap.cps.ncmp.api.impl.events.cmsubscription.DmiCmNotificationSubscriptionCacheHandler;
  33 import org.onap.cps.ncmp.api.impl.events.cmsubscription.model.CmNotificationSubscriptionStatus;
  34 import org.onap.cps.ncmp.api.impl.events.cmsubscription.model.DmiCmNotificationSubscriptionDetails;
  35 import org.onap.cps.ncmp.api.impl.events.cmsubscription.model.DmiCmNotificationSubscriptionPredicate;
  36 import org.onap.cps.ncmp.events.cmnotificationsubscription_merge1_0_0.client_to_ncmp.Predicate;
  37 import org.onap.cps.ncmp.events.cmnotificationsubscription_merge1_0_0.ncmp_to_dmi.CmNotificationSubscriptionDmiInEvent;
  38 import org.onap.cps.ncmp.events.cmsubscription_merge1_0_0.ncmp_to_client.CmNotificationSubscriptionNcmpOutEvent;
  39 import org.springframework.stereotype.Service;
  40
  41 @Service
  42 @RequiredArgsConstructor
  43 public class CmNotificationSubscriptionHandlerServiceImpl implements CmNotificationSubscriptionHandlerService {
  44
  45     private final CmNotificationSubscriptionPersistenceService cmNotificationSubscriptionPersistenceService;
  46     private final CmNotificationSubscriptionDelta cmNotificationSubscriptionDelta;
  47     private final CmNotificationSubscriptionMappersHandler cmNotificationSubscriptionMappersHandler;
  48     private final CmNotificationSubscriptionEventsHandler cmNotificationSubscriptionEventsHandler;
  49     private final DmiCmNotificationSubscriptionCacheHandler dmiCmNotificationSubscriptionCacheHandler;
  50
  51     @Override
  52     public void processSubscriptionCreateRequest(final String subscriptionId, final List<Predicate> predicates) {
  53         if (cmNotificationSubscriptionPersistenceService.isUniqueSubscriptionId(subscriptionId)) {
  54             dmiCmNotificationSubscriptionCacheHandler.add(subscriptionId, predicates);
  55             handleCmNotificationSubscriptionDelta(subscriptionId);
  56             scheduleCmNotificationSubscriptionNcmpOutEventResponse(subscriptionId,
  57                     "subscriptionCreateResponse");
  58         } else {
  59             rejectAndPublishCmNotificationSubscriptionCreateRequest(subscriptionId, predicates);
  60         }
  61     }
  62
  63     @Override
  64     public void processSubscriptionDeleteRequest(final String subscriptionId, final List<Predicate> predicates) {
  65         dmiCmNotificationSubscriptionCacheHandler.add(subscriptionId, predicates);
  66         sendSubscriptionDeleteRequestToDmi(subscriptionId);
  67         scheduleCmNotificationSubscriptionNcmpOutEventResponse(subscriptionId, "subscriptionDeleteResponse");
  68     }
  69
  70     private void scheduleCmNotificationSubscriptionNcmpOutEventResponse(final String subscriptionId,
  71                                                                         final String eventType) {
  72         cmNotificationSubscriptionEventsHandler.publishCmNotificationSubscriptionNcmpOutEvent(subscriptionId,
  73                 eventType, null, true);
  74     }
  75
  76     private void rejectAndPublishCmNotificationSubscriptionCreateRequest(final String subscriptionId,
  77                                                                          final List<Predicate> predicates) {
  78         final Set<String> subscriptionTargetFilters =
  79                 predicates.stream().flatMap(predicate -> predicate.getTargetFilter().stream())
  80                         .collect(Collectors.toSet());
  81         final CmNotificationSubscriptionNcmpOutEvent cmNotificationSubscriptionNcmpOutEvent =
  82                 cmNotificationSubscriptionMappersHandler.toCmNotificationSubscriptionNcmpOutEventForRejectedRequest(
  83                         subscriptionId, new ArrayList<>(subscriptionTargetFilters));
  84         cmNotificationSubscriptionEventsHandler.publishCmNotificationSubscriptionNcmpOutEvent(subscriptionId,
  85                 "subscriptionCreateResponse", cmNotificationSubscriptionNcmpOutEvent, false);
  86     }
  87
  88     private void handleCmNotificationSubscriptionDelta(final String subscriptionId) {
  89         final Map<String, DmiCmNotificationSubscriptionDetails> dmiCmNotificationSubscriptionDetailsMap =
  90                 dmiCmNotificationSubscriptionCacheHandler.get(subscriptionId);
  91         dmiCmNotificationSubscriptionDetailsMap.forEach((dmiPluginName, dmiCmNotificationSubscriptionDetails) -> {
  92             final List<DmiCmNotificationSubscriptionPredicate> dmiCmNotificationSubscriptionPredicates =
  93                     cmNotificationSubscriptionDelta.getDelta(
  94                             dmiCmNotificationSubscriptionDetails.getDmiCmNotificationSubscriptionPredicates());
  95
  96             if (dmiCmNotificationSubscriptionPredicates.isEmpty()) {
  97                 acceptAndPublishCmNotificationSubscriptionNcmpOutEventPerDmi(subscriptionId, dmiPluginName);
  98             } else {
  99                 publishCmNotificationSubscriptionDmiInEventPerDmi(subscriptionId, dmiPluginName,
 100                         dmiCmNotificationSubscriptionPredicates);
 101             }
 102         });
 103     }
 104
 105     private void publishCmNotificationSubscriptionDmiInEventPerDmi(final String subscriptionId,
 106                                                                    final String dmiPluginName,
 107                                                                    final List<DmiCmNotificationSubscriptionPredicate>
 108                                                                            dmiCmNotificationSubscriptionPredicates) {
 109         final CmNotificationSubscriptionDmiInEvent cmNotificationSubscriptionDmiInEvent =
 110                 cmNotificationSubscriptionMappersHandler.toCmNotificationSubscriptionDmiInEvent(
 111                         dmiCmNotificationSubscriptionPredicates);
 112         cmNotificationSubscriptionEventsHandler.publishCmNotificationSubscriptionDmiInEvent(subscriptionId,
 113                 dmiPluginName, "subscriptionCreateRequest", cmNotificationSubscriptionDmiInEvent);
 114     }
 115
 116     private void acceptAndPublishCmNotificationSubscriptionNcmpOutEventPerDmi(final String subscriptionId,
 117                                                                               final String dmiPluginName) {
 118         dmiCmNotificationSubscriptionCacheHandler.updateDmiCmNotificationSubscriptionStatusPerDmi(subscriptionId,
 119                 dmiPluginName, CmNotificationSubscriptionStatus.ACCEPTED);
 120         dmiCmNotificationSubscriptionCacheHandler.persistIntoDatabasePerDmi(subscriptionId, dmiPluginName);
 121     }
 122
 123     private void sendSubscriptionDeleteRequestToDmi(final String subscriptionId) {
 124         final Map<String, DmiCmNotificationSubscriptionDetails> dmiCmNotificationSubscriptionDetailsMap =
 125                 dmiCmNotificationSubscriptionCacheHandler.get(subscriptionId);
 126         dmiCmNotificationSubscriptionDetailsMap.forEach((dmiPluginName, dmiCmNotificationSubscriptionDetails) -> {
 127             final CmNotificationSubscriptionDmiInEvent cmNotificationSubscriptionDmiInEvent =
 128                     cmNotificationSubscriptionMappersHandler.toCmNotificationSubscriptionDmiInEvent(
 129                             dmiCmNotificationSubscriptionDetails.getDmiCmNotificationSubscriptionPredicates());
 130             cmNotificationSubscriptionEventsHandler.publishCmNotificationSubscriptionDmiInEvent(subscriptionId,
 131                     dmiPluginName, "subscriptionDeleteRequest", cmNotificationSubscriptionDmiInEvent);
 132         });
 133     }
 134 }