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.cache.DmiCacheHandler;
  30 import org.onap.cps.ncmp.impl.cmnotificationsubscription.dmi.DmiInEventMapper;
  31 import org.onap.cps.ncmp.impl.cmnotificationsubscription.dmi.DmiInEventProducer;
  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 NcmpOutEventMapper ncmpOutEventMapper;
  48     private final DmiInEventMapper dmiInEventMapper;
  49     private final NcmpOutEventProducer ncmpOutEventProducer;
  50     private final DmiInEventProducer dmiInEventProducer;
  51     private final DmiCacheHandler dmiCacheHandler;
  52
  53     @Override
  54     public void processSubscriptionCreateRequest(final String subscriptionId, final List<Predicate> predicates) {
  55         if (cmSubscriptionPersistenceService.isUniqueSubscriptionId(subscriptionId)) {
  56             dmiCacheHandler.add(subscriptionId, predicates);
  57             handleNewCmSubscription(subscriptionId);
  58             scheduleNcmpOutEventResponse(subscriptionId, "subscriptionCreateResponse");
  59         } else {
  60             rejectAndPublishCreateRequest(subscriptionId, predicates);
  61         }
  62     }
  63
  64     @Override
  65     public void processSubscriptionDeleteRequest(final String subscriptionId, final List<Predicate> predicates) {
  66         dmiCacheHandler.add(subscriptionId, predicates);
  67         sendSubscriptionDeleteRequestToDmi(subscriptionId);
  68         scheduleNcmpOutEventResponse(subscriptionId, "subscriptionDeleteResponse");
  69     }
  70
  71     private void scheduleNcmpOutEventResponse(final String subscriptionId, final String eventType) {
  72         ncmpOutEventProducer.publishNcmpOutEvent(subscriptionId, eventType, null, true);
  73     }
  74
  75     private void rejectAndPublishCreateRequest(final String subscriptionId, final List<Predicate> predicates) {
  76         final Set<String> subscriptionTargetFilters =
  77                 predicates.stream().flatMap(predicate -> predicate.getTargetFilter().stream())
  78                         .collect(Collectors.toSet());
  79         final NcmpOutEvent ncmpOutEvent = ncmpOutEventMapper.toNcmpOutEventForRejectedRequest(subscriptionId,
  80                 new ArrayList<>(subscriptionTargetFilters));
  81         ncmpOutEventProducer.publishNcmpOutEvent(subscriptionId, "subscriptionCreateResponse", ncmpOutEvent, false);
  82     }
  83
  84     private void handleNewCmSubscription(final String subscriptionId) {
  85         final Map<String, DmiCmSubscriptionDetails> dmiSubscriptionsPerDmi =
  86                 dmiCacheHandler.get(subscriptionId);
  87         dmiSubscriptionsPerDmi.forEach((dmiPluginName, dmiSubscriptionDetails) -> {
  88             final List<DmiCmSubscriptionPredicate> dmiCmSubscriptionPredicates =
  89                     cmSubscriptionComparator.getNewDmiSubscriptionPredicates(
  90                             dmiSubscriptionDetails.getDmiCmSubscriptionPredicates());
  91
  92             if (dmiCmSubscriptionPredicates.isEmpty()) {
  93                 acceptAndPublishNcmpOutEventPerDmi(subscriptionId, dmiPluginName);
  94             } else {
  95                 publishDmiInEventPerDmi(subscriptionId, dmiPluginName, dmiCmSubscriptionPredicates);
  96             }
  97         });
  98     }
  99
 100     private void publishDmiInEventPerDmi(final String subscriptionId, final String dmiPluginName,
 101             final List<DmiCmSubscriptionPredicate> dmiCmSubscriptionPredicates) {
 102         final DmiInEvent dmiInEvent = dmiInEventMapper.toDmiInEvent(dmiCmSubscriptionPredicates);
 103         dmiInEventProducer.publishDmiInEvent(subscriptionId, dmiPluginName,
 104                 "subscriptionCreateRequest", dmiInEvent);
 105     }
 106
 107     private void acceptAndPublishNcmpOutEventPerDmi(final String subscriptionId, final String dmiPluginName) {
 108         dmiCacheHandler.updateDmiSubscriptionStatusPerDmi(subscriptionId, dmiPluginName,
 109                 CmSubscriptionStatus.ACCEPTED);
 110         dmiCacheHandler.persistIntoDatabasePerDmi(subscriptionId, dmiPluginName);
 111     }
 112
 113     private void sendSubscriptionDeleteRequestToDmi(final String subscriptionId) {
 114         final Map<String, DmiCmSubscriptionDetails> dmiSubscriptionsPerDmi =
 115                 dmiCacheHandler.get(subscriptionId);
 116         dmiSubscriptionsPerDmi.forEach((dmiPluginName, dmiSubscriptionDetails) -> {
 117             final DmiInEvent dmiInEvent = dmiInEventMapper.toDmiInEvent(
 118                     dmiSubscriptionDetails.getDmiCmSubscriptionPredicates());
 119             dmiInEventProducer.publishDmiInEvent(subscriptionId, dmiPluginName,
 120                     "subscriptionDeleteRequest", dmiInEvent);
 121         });
 122     }
 123 }