2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2022 Nordix Foundation
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 * SPDX-License-Identifier: Apache-2.0
18 * ============LICENSE_END=========================================================
21 package org.onap.cps.ncmp.api.impl.event;
23 import lombok.RequiredArgsConstructor;
24 import lombok.extern.slf4j.Slf4j;
25 import org.springframework.kafka.core.KafkaTemplate;
26 import org.springframework.kafka.support.SendResult;
27 import org.springframework.stereotype.Service;
28 import org.springframework.util.concurrent.ListenableFuture;
29 import org.springframework.util.concurrent.ListenableFutureCallback;
32 * EventsPublisher to publish events.
37 @RequiredArgsConstructor
38 public class EventsPublisher<T> {
40 private final KafkaTemplate<String, T> eventKafkaTemplate;
43 * LCM Event publisher.
45 * @param topicName valid topic name
46 * @param eventKey message key
47 * @param event message payload
49 public void publishEvent(final String topicName, final String eventKey, final T event) {
50 final ListenableFuture<SendResult<String, T>> eventFuture =
51 eventKafkaTemplate.send(topicName, eventKey, event);
53 eventFuture.addCallback(new ListenableFutureCallback<>() {
55 public void onFailure(final Throwable throwable) {
56 log.error("Unable to publish event to topic : {} due to {}", topicName, throwable.getMessage());
60 public void onSuccess(final SendResult<String, T> sendResult) {
61 log.debug("Successfully published event to topic : {} , Event : {}",
62 sendResult.getRecordMetadata().topic(), sendResult.getProducerRecord().value());