gerrit.onap Code Review - cps.git/blob

   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.impl.cmnotificationsubscription.ncmp;
  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.impl.cmnotificationsubscription.EventsFacade;
  30 import org.onap.cps.ncmp.impl.cmnotificationsubscription.MappersFacade;
  31 import org.onap.cps.ncmp.impl.cmnotificationsubscription.cache.DmiCacheHandler;
  32 import org.onap.cps.ncmp.impl.cmnotificationsubscription.models.CmSubscriptionStatus;
  33 import org.onap.cps.ncmp.impl.cmnotificationsubscription.models.DmiCmSubscriptionDetails;
  34 import org.onap.cps.ncmp.impl.cmnotificationsubscription.models.DmiCmSubscriptionPredicate;
  35 import org.onap.cps.ncmp.impl.cmnotificationsubscription.utils.CmSubscriptionPersistenceService;
  36 import org.onap.cps.ncmp.impl.cmnotificationsubscription_1_0_0.client_to_ncmp.Predicate;
  37 import org.onap.cps.ncmp.impl.cmnotificationsubscription_1_0_0.ncmp_to_client.NcmpOutEvent;
  38 import org.onap.cps.ncmp.impl.cmnotificationsubscription_1_0_0.ncmp_to_dmi.DmiInEvent;
  39 import org.springframework.stereotype.Service;
  40
  41 @Service
  42 @RequiredArgsConstructor
  43 public class CmSubscriptionHandlerImpl implements CmSubscriptionHandler {
  44
  45     private final CmSubscriptionPersistenceService cmSubscriptionPersistenceService;
  46     private final CmSubscriptionComparator cmSubscriptionComparator;
  47     private final MappersFacade mappersFacade;
  48     private final EventsFacade eventsFacade;
  49     private final DmiCacheHandler dmiCacheHandler;
  50
  51     @Override
  52     public void processSubscriptionCreateRequest(final String subscriptionId, final List<Predicate> predicates) {
  53         if (cmSubscriptionPersistenceService.isUniqueSubscriptionId(subscriptionId)) {
  54             dmiCacheHandler.add(subscriptionId, predicates);
  55             handleNewCmSubscription(subscriptionId);
  56             scheduleNcmpOutEventResponse(subscriptionId, "subscriptionCreateResponse");
  57         } else {
  58             rejectAndPublishCreateRequest(subscriptionId, predicates);
  59         }
  60     }
  61
  62     @Override
  63     public void processSubscriptionDeleteRequest(final String subscriptionId, final List<Predicate> predicates) {
  64         dmiCacheHandler.add(subscriptionId, predicates);
  65         sendSubscriptionDeleteRequestToDmi(subscriptionId);
  66         scheduleNcmpOutEventResponse(subscriptionId, "subscriptionDeleteResponse");
  67     }
  68
  69     private void scheduleNcmpOutEventResponse(final String subscriptionId, final String eventType) {
  70         eventsFacade.publishNcmpOutEvent(subscriptionId, eventType, null, true);
  71     }
  72
  73     private void rejectAndPublishCreateRequest(final String subscriptionId, final List<Predicate> predicates) {
  74         final Set<String> subscriptionTargetFilters =
  75                 predicates.stream().flatMap(predicate -> predicate.getTargetFilter().stream())
  76                         .collect(Collectors.toSet());
  77         final NcmpOutEvent ncmpOutEvent = mappersFacade.toNcmpOutEventForRejectedRequest(subscriptionId,
  78                 new ArrayList<>(subscriptionTargetFilters));
  79         eventsFacade.publishNcmpOutEvent(subscriptionId, "subscriptionCreateResponse", ncmpOutEvent, false);
  80     }
  81
  82     private void handleNewCmSubscription(final String subscriptionId) {
  83         final Map<String, DmiCmSubscriptionDetails> dmiSubscriptionsPerDmi =
  84                 dmiCacheHandler.get(subscriptionId);
  85         dmiSubscriptionsPerDmi.forEach((dmiPluginName, dmiSubscriptionDetails) -> {
  86             final List<DmiCmSubscriptionPredicate> dmiCmSubscriptionPredicates =
  87                     cmSubscriptionComparator.getNewDmiSubscriptionPredicates(
  88                             dmiSubscriptionDetails.getDmiCmSubscriptionPredicates());
  89
  90             if (dmiCmSubscriptionPredicates.isEmpty()) {
  91                 acceptAndPublishNcmpOutEventPerDmi(subscriptionId, dmiPluginName);
  92             } else {
  93                 publishDmiInEventPerDmi(subscriptionId, dmiPluginName, dmiCmSubscriptionPredicates);
  94             }
  95         });
  96     }
  97
  98     private void publishDmiInEventPerDmi(final String subscriptionId, final String dmiPluginName,
  99             final List<DmiCmSubscriptionPredicate> dmiCmSubscriptionPredicates) {
 100         final DmiInEvent dmiInEvent = mappersFacade.toDmiInEvent(dmiCmSubscriptionPredicates);
 101         eventsFacade.publishDmiInEvent(subscriptionId, dmiPluginName,
 102                 "subscriptionCreateRequest", dmiInEvent);
 103     }
 104
 105     private void acceptAndPublishNcmpOutEventPerDmi(final String subscriptionId, final String dmiPluginName) {
 106         dmiCacheHandler.updateDmiSubscriptionStatusPerDmi(subscriptionId, dmiPluginName,
 107                 CmSubscriptionStatus.ACCEPTED);
 108         dmiCacheHandler.persistIntoDatabasePerDmi(subscriptionId, dmiPluginName);
 109     }
 110
 111     private void sendSubscriptionDeleteRequestToDmi(final String subscriptionId) {
 112         final Map<String, DmiCmSubscriptionDetails> dmiSubscriptionsPerDmi =
 113                 dmiCacheHandler.get(subscriptionId);
 114         dmiSubscriptionsPerDmi.forEach((dmiPluginName, dmiSubscriptionDetails) -> {
 115             final DmiInEvent dmiInEvent = mappersFacade.toDmiInEvent(
 116                     dmiSubscriptionDetails.getDmiCmSubscriptionPredicates());
 117             eventsFacade.publishDmiInEvent(subscriptionId, dmiPluginName,
 118                     "subscriptionDeleteRequest", dmiInEvent);
 119         });
 120     }
 121 }