cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/events/cmsubscription/DmiCmNotificationSubscriptionCacheHandler.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;
  22
  23 import static org.onap.cps.ncmp.api.impl.events.cmsubscription.model.CmNotificationSubscriptionStatus.PENDING;
  24
  25 import java.util.ArrayList;
  26 import java.util.Collection;
  27 import java.util.HashMap;
  28 import java.util.HashSet;
  29 import java.util.List;
  30 import java.util.Map;
  31 import java.util.Set;
  32 import lombok.RequiredArgsConstructor;
  33 import org.onap.cps.ncmp.api.impl.events.cmsubscription.model.DmiCmNotificationSubscriptionDetails;
  34 import org.onap.cps.ncmp.api.impl.events.cmsubscription.model.DmiCmNotificationSubscriptionPredicate;
  35 import org.onap.cps.ncmp.api.impl.inventory.InventoryPersistence;
  36 import org.onap.cps.ncmp.api.impl.operations.DatastoreType;
  37 import org.onap.cps.ncmp.api.impl.yangmodels.YangModelCmHandle;
  38 import org.onap.cps.ncmp.events.cmnotificationsubscription_merge1_0_0.client_to_ncmp.Predicate;
  39 import org.springframework.stereotype.Component;
  40
  41 @Component
  42 @RequiredArgsConstructor
  43 public class DmiCmNotificationSubscriptionCacheHandler {
  44
  45     private final Map<String, Map<String, DmiCmNotificationSubscriptionDetails>> cmNotificationSubscriptionCache;
  46     private final InventoryPersistence inventoryPersistence;
  47
  48     /**
  49      * Adds new subscription to the subscription cache.
  50      *
  51      * @param subscriptionId    subscription Id
  52      * @param predicates        subscription request predicates
  53      */
  54     public void add(final String subscriptionId, final List<Predicate> predicates) {
  55         cmNotificationSubscriptionCache.put(subscriptionId, createDmiCmNotificationSubscriptionsPerDmi(predicates));
  56     }
  57
  58     /**
  59      *  Creates map of subscription details per DMI.
  60      *
  61      * @param predicates    CM Subscription Create Request Predicates
  62      * @return              Map of DmiCmNotificationSubscription per DMI plugin
  63      */
  64     public Map<String, DmiCmNotificationSubscriptionDetails> createDmiCmNotificationSubscriptionsPerDmi(
  65             final List<Predicate> predicates) {
  66         final Map<String, DmiCmNotificationSubscriptionDetails> dmiCmNotificationSubscriptionDetailsPerDmi =
  67                 new HashMap<>();
  68         for (final Predicate requestPredicate : predicates) {
  69             final List<String> targetFilter = requestPredicate.getTargetFilter();
  70             final DatastoreType datastoreType = DatastoreType.fromDatastoreName(
  71                     requestPredicate.getScopeFilter().getDatastore().toString());
  72             final Set<String> xpaths = new HashSet<>(requestPredicate.getScopeFilter().getXpathFilter());
  73             final Map<String, Set<String>> targetCmHandlesByDmiMap = groupTargetCmHandleIdsByDmi(targetFilter);
  74             for (final Map.Entry<String, Set<String>> targetCmHandlesByDmi: targetCmHandlesByDmiMap.entrySet()) {
  75                 final DmiCmNotificationSubscriptionPredicate dmiCmNotificationSubscriptionPredicate =
  76                         new DmiCmNotificationSubscriptionPredicate(targetCmHandlesByDmi.getValue(),
  77                                 datastoreType, xpaths);
  78                 updateDmiCmNotificationSubscriptionDetailsPerDmi(targetCmHandlesByDmi.getKey(),
  79                         dmiCmNotificationSubscriptionPredicate,
  80                         dmiCmNotificationSubscriptionDetailsPerDmi);
  81             }
  82         }
  83         return dmiCmNotificationSubscriptionDetailsPerDmi;
  84     }
  85
  86     private void updateDmiCmNotificationSubscriptionDetailsPerDmi(
  87             final String dmiServiceName,
  88             final DmiCmNotificationSubscriptionPredicate dmiCmNotificationSubscriptionPredicate,
  89             final Map<String, DmiCmNotificationSubscriptionDetails> dmiCmNotificationSubscriptionDetailsPerDmi) {
  90         if (dmiCmNotificationSubscriptionDetailsPerDmi.containsKey(dmiServiceName)) {
  91             dmiCmNotificationSubscriptionDetailsPerDmi.get(dmiServiceName)
  92                     .getDmiCmNotificationSubscriptionPredicates().add(dmiCmNotificationSubscriptionPredicate);
  93         } else {
  94             dmiCmNotificationSubscriptionDetailsPerDmi.put(dmiServiceName,
  95                     new DmiCmNotificationSubscriptionDetails(
  96                             new ArrayList<>(List.of(dmiCmNotificationSubscriptionPredicate)),
  97                             PENDING));
  98         }
  99     }
 100
 101     private Map<String, Set<String>> groupTargetCmHandleIdsByDmi(final List<String> targetCmHandleIds) {
 102         final Map<String, Set<String>> targetCmHandlesByDmiServiceNames = new HashMap<>();
 103         final Collection<YangModelCmHandle> yangModelCmHandles =
 104                 inventoryPersistence.getYangModelCmHandles(targetCmHandleIds);
 105
 106         for (final YangModelCmHandle yangModelCmHandle : yangModelCmHandles) {
 107             final String dmiServiceName = yangModelCmHandle.getDmiServiceName();
 108             targetCmHandlesByDmiServiceNames.putIfAbsent(dmiServiceName, new HashSet<>());
 109             targetCmHandlesByDmiServiceNames.get(dmiServiceName).add(yangModelCmHandle.getId());
 110         }
 111         return targetCmHandlesByDmiServiceNames;
 112     }
 113 }