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/*
* ============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 lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
@Service
@Slf4j
public class NotificationService {
private boolean dataUpdatedEventNotificationEnabled;
private NotificationPublisher notificationPublisher;
private CpsDataUpdatedEventFactory cpsDataUpdatedEventFactory;
private NotificationErrorHandler notificationErrorHandler;
/**
* Create an instance of Notification Subscriber.
*
* @param dataUpdatedEventNotificationEnabled notification can be enabled by setting
* 'notification.data-updated.enabled=true' in application properties
* @param notificationPublisher notification Publisher
* @param cpsDataUpdatedEventFactory to create CPSDataUpdatedEvent
* @param notificationErrorHandler error handler
*/
@Autowired
public NotificationService(
@Value("${notification.data-updated.enabled}") final boolean dataUpdatedEventNotificationEnabled,
final NotificationPublisher notificationPublisher,
final CpsDataUpdatedEventFactory cpsDataUpdatedEventFactory,
final NotificationErrorHandler notificationErrorHandler) {
this.dataUpdatedEventNotificationEnabled = dataUpdatedEventNotificationEnabled;
this.notificationPublisher = notificationPublisher;
this.cpsDataUpdatedEventFactory = cpsDataUpdatedEventFactory;
this.notificationErrorHandler = notificationErrorHandler;
}
/**
* Process Data Updated Event and publishes the notification.
*
* @param dataspaceName dataspace name
* @param anchorName anchor name
*/
public void processDataUpdatedEvent(final String dataspaceName, final String anchorName) {
log.debug("process data updated event for dataspace '{}' & anchor '{}'", dataspaceName, anchorName);
try {
if (shouldSendNotification()) {
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);
}
}
/*
Add more complex rules based on dataspace and anchor later
*/
private boolean shouldSendNotification() {
return dataUpdatedEventNotificationEnabled;
}
}
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