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Diffstat (limited to 'cps-service/src/main/java/org/onap/cps/notification/NotificationService.java')
-rw-r--r-- | cps-service/src/main/java/org/onap/cps/notification/NotificationService.java | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/cps-service/src/main/java/org/onap/cps/notification/NotificationService.java b/cps-service/src/main/java/org/onap/cps/notification/NotificationService.java new file mode 100644 index 0000000000..e97e8a3d8c --- /dev/null +++ b/cps-service/src/main/java/org/onap/cps/notification/NotificationService.java @@ -0,0 +1,89 @@ + +/* + * ============LICENSE_START======================================================= + * Copyright (C) 2021 Bell Canada. All rights reserved. + * ================================================================================ + * 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. + * + * SPDX-License-Identifier: Apache-2.0 + * ============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; + } + +} |