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/*
* ============LICENSE_START=======================================================
* Copyright (C) 2023 Nordix Foundation
* ================================================================================
* 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.ncmp.dmi.notifications.avcsubscription;
import io.cloudevents.CloudEvent;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.onap.cps.ncmp.events.avcsubscription1_0_0.dmi_to_ncmp.Data;
import org.onap.cps.ncmp.events.avcsubscription1_0_0.dmi_to_ncmp.SubscriptionEventResponse;
import org.onap.cps.ncmp.events.avcsubscription1_0_0.dmi_to_ncmp.SubscriptionStatus;
import org.onap.cps.ncmp.events.avcsubscription1_0_0.ncmp_to_dmi.CmHandle;
import org.onap.cps.ncmp.events.avcsubscription1_0_0.ncmp_to_dmi.SubscriptionEvent;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.stereotype.Component;
@Component
@Slf4j
@RequiredArgsConstructor
public class SubscriptionEventConsumer {
@Value("${app.dmi.avc.subscription-response-topic}")
private String cmAvcSubscriptionResponseTopic;
@Value("${dmi.service.name}")
private String dmiName;
private final KafkaTemplate<String, CloudEvent> cloudEventKafkaTemplate;
/**
* Consume the specified event.
*
* @param subscriptionCloudEvent the event to be consumed
*/
@KafkaListener(topics = "${app.dmi.avc.subscription-topic}",
containerFactory = "cloudEventConcurrentKafkaListenerContainerFactory")
public void consumeSubscriptionEvent(final ConsumerRecord<String, CloudEvent> subscriptionCloudEvent) {
final SubscriptionEvent subscriptionEvent =
SubscriptionEventResponseMapper.toSubscriptionEvent(subscriptionCloudEvent.value());
if (subscriptionEvent != null) {
final String eventKey = subscriptionCloudEvent.value().getId();
final String subscriptionType = subscriptionCloudEvent.value().getType();
if ("subscriptionCreated".equals(subscriptionType)) {
sendSubscriptionResponseMessage(eventKey, "subscriptionCreatedStatus",
formSubscriptionEventResponse(subscriptionEvent));
}
}
}
/**
* Sends message to the configured topic.
*
* @param eventKey is the kafka message key
* @param subscriptionType is the type of subscription action
* @param subscriptionEventResponse is the payload of the kafka message
*/
public void sendSubscriptionResponseMessage(final String eventKey,
final String subscriptionType,
final SubscriptionEventResponse subscriptionEventResponse) {
cloudEventKafkaTemplate.send(cmAvcSubscriptionResponseTopic, eventKey,
SubscriptionEventResponseMapper.toCloudEvent(subscriptionEventResponse, subscriptionType, dmiName));
}
private SubscriptionEventResponse formSubscriptionEventResponse(final SubscriptionEvent subscriptionEvent) {
final SubscriptionEventResponse subscriptionEventResponse = new SubscriptionEventResponse();
final Data subscriptionResponseData = new Data();
subscriptionResponseData.setClientId(subscriptionEvent.getData().getSubscription().getClientID());
subscriptionResponseData.setSubscriptionName(subscriptionEvent.getData().getSubscription().getName());
subscriptionResponseData.setDmiName(dmiName);
final List<CmHandle> cmHandles = subscriptionEvent.getData()
.getPredicates().getTargets();
subscriptionResponseData
.setSubscriptionStatus(
populateSubscriptionStatus(
extractCmHandleIds(cmHandles)));
subscriptionEventResponse.setData(subscriptionResponseData);
return subscriptionEventResponse;
}
private Set<String> extractCmHandleIds(final List<CmHandle> cmHandles) {
final Set<String> cmHandleIds = new HashSet<>();
for (final CmHandle cmHandle : cmHandles) {
cmHandleIds.add(cmHandle.getId());
}
return cmHandleIds;
}
private List<SubscriptionStatus> populateSubscriptionStatus(final Set<String> cmHandleIds) {
final List<SubscriptionStatus> subscriptionStatuses = new ArrayList<>();
for (final String cmHandleId : cmHandleIds) {
final SubscriptionStatus status = new SubscriptionStatus();
status.setId(cmHandleId);
status.setStatus(SubscriptionStatus.Status.ACCEPTED);
subscriptionStatuses.add(status);
}
return subscriptionStatuses;
}
}
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