Set CPS Project Status to 'Mature'
[cps.git] / cps-service / src / main / java / org / onap / cps / events / CpsDataUpdateEventsService.java
1 /*
2  * ============LICENSE_START=======================================================
3  * Copyright (C) 2024 TechMahindra Ltd.
4  * Copyright (C) 2024 Nordix Foundation.
5  * ================================================================================
6  * Licensed under the Apache License, Version 2.0 (the "License");
7  * you may not use this file except in compliance with the License.
8  * You may obtain a copy of the License at
9  *
10  *       http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing, software
13  * distributed under the License is distributed on an "AS IS" BASIS,
14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  *
18  * SPDX-License-Identifier: Apache-2.0
19  * ============LICENSE_END=========================================================
20  */
21
22 package org.onap.cps.events;
23
24 import io.cloudevents.CloudEvent;
25 import io.micrometer.core.annotation.Timed;
26 import java.time.OffsetDateTime;
27 import java.util.HashMap;
28 import java.util.Map;
29 import lombok.RequiredArgsConstructor;
30 import lombok.extern.slf4j.Slf4j;
31 import org.onap.cps.events.model.CpsDataUpdatedEvent;
32 import org.onap.cps.events.model.Data;
33 import org.onap.cps.events.model.Data.Operation;
34 import org.onap.cps.spi.model.Anchor;
35 import org.onap.cps.utils.DateTimeUtility;
36 import org.springframework.beans.factory.annotation.Value;
37 import org.springframework.stereotype.Service;
38
39 @Slf4j
40 @Service
41 @RequiredArgsConstructor
42 public class CpsDataUpdateEventsService {
43
44     private final EventsPublisher<CpsDataUpdatedEvent> eventsPublisher;
45
46     @Value("${app.cps.data-updated.topic:cps-data-updated-events}")
47     private String topicName;
48
49     @Value("${notification.enabled:false}")
50     private boolean notificationsEnabled;
51
52     /**
53      * Publish the cps data update event with header to the public topic.
54      *
55      * @param anchor Anchor of the updated data
56      * @param xpath  xpath of the updated data
57      * @param operation operation performed on the data
58      * @param observedTimestamp timestamp when data was updated.
59      */
60     @Timed(value = "cps.dataupdate.events.publish", description = "Time taken to publish Data Update event")
61     public void publishCpsDataUpdateEvent(final Anchor anchor, final String xpath,
62                                           final Operation operation, final OffsetDateTime observedTimestamp) {
63         if (notificationsEnabled) {
64             final CpsDataUpdatedEvent cpsDataUpdatedEvent = createCpsDataUpdatedEvent(anchor,
65                     observedTimestamp, xpath, operation);
66             final String updateEventId = anchor.getDataspaceName() + ":" + anchor.getName();
67             final Map<String, String> extensions = createUpdateEventExtensions(updateEventId);
68             final CloudEvent cpsDataUpdatedEventAsCloudEvent =
69                     CpsEvent.builder().type(CpsDataUpdatedEvent.class.getTypeName()).data(cpsDataUpdatedEvent)
70                             .extensions(extensions).build().asCloudEvent();
71             eventsPublisher.publishCloudEvent(topicName, updateEventId, cpsDataUpdatedEventAsCloudEvent);
72         } else {
73             log.debug("Notifications disabled.");
74         }
75     }
76
77     private CpsDataUpdatedEvent createCpsDataUpdatedEvent(final Anchor anchor, final OffsetDateTime observedTimestamp,
78                                                           final String xpath,
79                                                           final Operation rootNodeOperation) {
80         final CpsDataUpdatedEvent cpsDataUpdatedEvent = new CpsDataUpdatedEvent();
81         final Data updateEventData = new Data();
82         updateEventData.setObservedTimestamp(DateTimeUtility.toString(observedTimestamp));
83         updateEventData.setDataspaceName(anchor.getDataspaceName());
84         updateEventData.setAnchorName(anchor.getName());
85         updateEventData.setSchemaSetName(anchor.getSchemaSetName());
86         updateEventData.setOperation(getRootNodeOperation(xpath, rootNodeOperation));
87         updateEventData.setXpath(xpath);
88         cpsDataUpdatedEvent.setData(updateEventData);
89         return cpsDataUpdatedEvent;
90     }
91
92     private Map<String, String> createUpdateEventExtensions(final String eventKey) {
93         final Map<String, String> extensions = new HashMap<>();
94         extensions.put("correlationid", eventKey);
95         return extensions;
96     }
97
98     private Operation getRootNodeOperation(final String xpath, final Operation operation) {
99         return isRootXpath(xpath) || isRootContainerNodeXpath(xpath) ? operation : Operation.UPDATE;
100     }
101
102     private static boolean isRootXpath(final String xpath) {
103         return "/".equals(xpath) || "".equals(xpath);
104     }
105
106     private static boolean isRootContainerNodeXpath(final String xpath) {
107         return 0 == xpath.lastIndexOf('/');
108     }
109 }