2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2023 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.config.kafka;
23 import io.cloudevents.CloudEvent;
24 import java.time.Duration;
26 import lombok.RequiredArgsConstructor;
27 import org.apache.kafka.clients.producer.ProducerConfig;
28 import org.springframework.boot.autoconfigure.kafka.KafkaProperties;
29 import org.springframework.context.annotation.Bean;
30 import org.springframework.context.annotation.Configuration;
31 import org.springframework.context.annotation.Primary;
32 import org.springframework.kafka.annotation.EnableKafka;
33 import org.springframework.kafka.config.ConcurrentKafkaListenerContainerFactory;
34 import org.springframework.kafka.core.ConsumerFactory;
35 import org.springframework.kafka.core.DefaultKafkaConsumerFactory;
36 import org.springframework.kafka.core.DefaultKafkaProducerFactory;
37 import org.springframework.kafka.core.KafkaTemplate;
38 import org.springframework.kafka.core.ProducerFactory;
39 import org.springframework.kafka.support.serializer.JsonDeserializer;
40 import org.springframework.kafka.support.serializer.JsonSerializer;
43 * kafka Configuration for legacy and cloud events.
45 * @param <T> valid legacy event to be published over the wire.
49 @RequiredArgsConstructor
50 public class KafkaConfig<T> {
52 private final KafkaProperties kafkaProperties;
55 * This sets the strategy for creating legacy Kafka producer instance from kafka properties defined into
56 * application.yml and replaces value-serializer by JsonSerializer.
58 * @return legacy event producer instance.
61 public ProducerFactory<String, T> legacyEventProducerFactory() {
62 final Map<String, Object> producerConfigProperties = kafkaProperties.buildProducerProperties();
63 producerConfigProperties.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, JsonSerializer.class);
64 return new DefaultKafkaProducerFactory<>(producerConfigProperties);
68 * The ConsumerFactory implementation is to produce new legacy instance for provided kafka properties defined
69 * into application.yml and replaces deserializer-value by JsonDeserializer.
71 * @return an instance of legacy consumer factory.
74 public ConsumerFactory<String, T> legacyEventConsumerFactory() {
75 final Map<String, Object> consumerConfigProperties = kafkaProperties.buildConsumerProperties();
76 consumerConfigProperties.put("spring.deserializer.value.delegate.class", JsonDeserializer.class);
77 return new DefaultKafkaConsumerFactory<>(consumerConfigProperties);
81 * A legacy Kafka event template for executing high-level operations. The legacy producer factory ensure this.
83 * @return an instance of legacy Kafka template.
87 public KafkaTemplate<String, T> legacyEventKafkaTemplate() {
88 final KafkaTemplate<String, T> kafkaTemplate = new KafkaTemplate<>(legacyEventProducerFactory());
89 kafkaTemplate.setConsumerFactory(legacyEventConsumerFactory());
94 * A legacy concurrent kafka listener container factory.
96 * @return instance of Concurrent kafka listener factory
99 public ConcurrentKafkaListenerContainerFactory<String, T> legacyEventConcurrentKafkaListenerContainerFactory() {
100 final ConcurrentKafkaListenerContainerFactory<String, T> containerFactory =
101 new ConcurrentKafkaListenerContainerFactory<>();
102 containerFactory.setConsumerFactory(legacyEventConsumerFactory());
103 containerFactory.getContainerProperties().setAuthExceptionRetryInterval(Duration.ofSeconds(10));
104 return containerFactory;
108 * This sets the strategy for creating cloud Kafka producer instance from kafka properties defined into
109 * application.yml with CloudEventSerializer.
111 * @return cloud event producer instance.
114 public ProducerFactory<String, CloudEvent> cloudEventProducerFactory() {
115 final Map<String, Object> producerConfigProperties = kafkaProperties.buildProducerProperties();
116 return new DefaultKafkaProducerFactory<>(producerConfigProperties);
120 * The ConsumerFactory implementation to produce new legacy instance for provided kafka properties defined
121 * into application.yml having CloudEventDeserializer as deserializer-value.
123 * @return an instance of cloud consumer factory.
126 public ConsumerFactory<String, CloudEvent> cloudEventConsumerFactory() {
127 final Map<String, Object> consumerConfigProperties = kafkaProperties.buildConsumerProperties();
128 return new DefaultKafkaConsumerFactory<>(consumerConfigProperties);
133 * A cloud Kafka event template for executing high-level operations. The cloud producer factory ensure this.
135 * @return an instance of cloud Kafka template.
138 public KafkaTemplate<String, CloudEvent> cloudEventKafkaTemplate() {
139 final KafkaTemplate<String, CloudEvent> kafkaTemplate = new KafkaTemplate<>(cloudEventProducerFactory());
140 kafkaTemplate.setConsumerFactory(cloudEventConsumerFactory());
141 return kafkaTemplate;
145 * A Concurrent CloudEvent kafka listener container factory.
147 * @return instance of Concurrent kafka listener factory
150 public ConcurrentKafkaListenerContainerFactory<String, CloudEvent>
151 cloudEventConcurrentKafkaListenerContainerFactory() {
152 final ConcurrentKafkaListenerContainerFactory<String, CloudEvent> containerFactory =
153 new ConcurrentKafkaListenerContainerFactory<>();
154 containerFactory.setConsumerFactory(cloudEventConsumerFactory());
155 containerFactory.getContainerProperties().setAuthExceptionRetryInterval(Duration.ofSeconds(10));
156 return containerFactory;