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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.avc;
import java.util.Date;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.onap.cps.ncmp.dmi.service.model.SubscriptionEventResponse;
import org.onap.cps.ncmp.dmi.service.model.SubscriptionEventResponseStatus;
import org.onap.cps.ncmp.event.model.SubscriptionEvent;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.kafka.support.KafkaHeaders;
import org.springframework.messaging.handler.annotation.Header;
import org.springframework.messaging.handler.annotation.Payload;
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, SubscriptionEventResponse> kafkaTemplate;
/**
* Consume the specified event.
*
* @param subscriptionEvent the event to be consumed
*/
@KafkaListener(topics = "${app.dmi.avc.subscription-topic}",
properties = {"spring.json.value.default.type=org.onap.cps.ncmp.event.model.SubscriptionEvent"})
public void consumeSubscriptionEvent(@Payload final SubscriptionEvent subscriptionEvent,
@Header(KafkaHeaders.RECEIVED_MESSAGE_KEY) final String eventKey,
@Header(KafkaHeaders.RECEIVED_TIMESTAMP) final String timeStampReceived) {
final Date dateAndTimeReceived = new Date(Long.parseLong(timeStampReceived));
final String subscriptionName = subscriptionEvent.getEvent().getSubscription().getName();
log.info("Subscription for SubscriptionName {} is received at {} by dmi plugin.", subscriptionName,
dateAndTimeReceived);
sendSubscriptionResponseMessage(eventKey, formSubscriptionEventResponse(subscriptionEvent));
}
/**
* Sends message to the configured topic.
*
* @param eventKey is the kafka message key
* @param subscriptionEventResponse is the payload of the kafka message
*/
public void sendSubscriptionResponseMessage(final String eventKey,
final SubscriptionEventResponse subscriptionEventResponse) {
kafkaTemplate.send(cmAvcSubscriptionResponseTopic, eventKey, subscriptionEventResponse);
}
private SubscriptionEventResponse formSubscriptionEventResponse(final SubscriptionEvent subscriptionEvent) {
final SubscriptionEventResponse subscriptionEventResponse = new SubscriptionEventResponse();
subscriptionEventResponse.setClientId(subscriptionEvent.getEvent().getSubscription().getClientID());
subscriptionEventResponse.setSubscriptionName(subscriptionEvent.getEvent().getSubscription().getName());
subscriptionEventResponse.setDmiName(dmiName);
final List<Object> cmHandleIdToCmHandlePropertyMap = subscriptionEvent.getEvent()
.getPredicates()
.getTargets();
subscriptionEventResponse
.setCmHandleIdToStatus(populateCmHandleIdToStatus(extractCmHandleIds(cmHandleIdToCmHandlePropertyMap)));
return subscriptionEventResponse;
}
private Set<String> extractCmHandleIds(final List<Object> cmHandleIdTocmHandlePropertyMap) {
final Set<String> cmHandleIds = new HashSet<>();
for (final Object obj: cmHandleIdTocmHandlePropertyMap) {
final Map<String, Object> cmHandleIdToPropertiesMap = (Map<String, Object>) obj;
cmHandleIds.addAll(cmHandleIdToPropertiesMap.keySet());
}
return cmHandleIds;
}
private Map<String, SubscriptionEventResponseStatus> populateCmHandleIdToStatus(final Set<String> cmHandleIds) {
final Map<String, SubscriptionEventResponseStatus> result = new HashMap<>();
for (final String cmHandleId : cmHandleIds) {
result.put(cmHandleId, SubscriptionEventResponseStatus.ACCEPTED);
}
return result;
}
}
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