1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
/*
* ============LICENSE_START=======================================================
* Copyright (c) 2021 Bell Canada.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
package org.onap.cps.notification;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.Future;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;
@Service
@Slf4j
public class NotificationService {
private NotificationProperties notificationProperties;
private NotificationPublisher notificationPublisher;
private CpsDataUpdatedEventFactory cpsDataUpdatedEventFactory;
private NotificationErrorHandler notificationErrorHandler;
private List<Pattern> dataspacePatterns;
/**
* Create an instance of Notification Subscriber.
*
* @param notificationProperties properties for notification
* @param notificationPublisher notification Publisher
* @param cpsDataUpdatedEventFactory to create CPSDataUpdatedEvent
* @param notificationErrorHandler error handler
*/
@Autowired
public NotificationService(
final NotificationProperties notificationProperties,
final NotificationPublisher notificationPublisher,
final CpsDataUpdatedEventFactory cpsDataUpdatedEventFactory,
final NotificationErrorHandler notificationErrorHandler) {
log.debug("Notification Properties {}", notificationProperties);
this.notificationProperties = notificationProperties;
this.notificationPublisher = notificationPublisher;
this.cpsDataUpdatedEventFactory = cpsDataUpdatedEventFactory;
this.notificationErrorHandler = notificationErrorHandler;
this.dataspacePatterns = getDataspaceFilterPatterns(notificationProperties);
}
private List<Pattern> getDataspaceFilterPatterns(final NotificationProperties notificationProperties) {
if (notificationProperties.isEnabled()) {
return Arrays.stream(notificationProperties.getFilters()
.getOrDefault("enabled-dataspaces", "")
.split(","))
.map(filterPattern -> Pattern.compile(filterPattern, Pattern.CASE_INSENSITIVE))
.collect(Collectors.toList());
} else {
return Collections.emptyList();
}
}
/**
* Process Data Updated Event and publishes the notification.
*
* @param dataspaceName dataspace name
* @param anchorName anchor name
*/
@Async("notificationExecutor")
public Future<Void> processDataUpdatedEvent(final String dataspaceName, final String anchorName) {
log.debug("process data updated event for dataspace '{}' & anchor '{}'", dataspaceName, anchorName);
try {
if (shouldSendNotification(dataspaceName)) {
final var cpsDataUpdatedEvent =
cpsDataUpdatedEventFactory.createCpsDataUpdatedEvent(dataspaceName, anchorName);
log.debug("data updated event to be published {}", cpsDataUpdatedEvent);
notificationPublisher.sendNotification(cpsDataUpdatedEvent);
}
} catch (final Exception exception) {
/* All the exceptions are handled to not to propagate it to caller.
CPS operation should not fail if sending event fails for any reason.
*/
notificationErrorHandler.onException("Failed to process cps-data-updated-event.",
exception, dataspaceName, anchorName);
}
return CompletableFuture.completedFuture(null);
}
/*
Add more complex rules based on dataspace and anchor later
*/
private boolean shouldSendNotification(final String dataspaceName) {
return notificationProperties.isEnabled()
&& dataspacePatterns.stream()
.anyMatch(pattern -> pattern.matcher(dataspaceName).find());
}
}
|
