9d33d2581681e39f9a1dbbfdb7e99d421c32d7f7
[cps.git] /
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 }