airavata-kubernetes/modules/task-api/src/main/java/org/apache/airavata/k8s/task/api/messaging/SenderConfig.java

/**
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */
package org.apache.airavata.k8s.task.api.messaging;

import org.apache.airavata.k8s.task.api.TaskContext;
import org.apache.airavata.k8s.task.api.TaskContextSerializer;
import org.apache.kafka.clients.producer.ProducerConfig;
import org.apache.kafka.common.serialization.StringSerializer;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.kafka.core.DefaultKafkaProducerFactory;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.kafka.core.ProducerFactory;

import java.util.HashMap;
import java.util.Map;

/**
 * TODO: Class level comments please
 *
 * @author dimuthu
 * @since 1.0.0-SNAPSHOT
 */
@Configuration
public class SenderConfig {
    @Value("${kafka.bootstrap-servers}")
    private String bootstrapServers;

    @Bean
    public Map<String, Object> producerConfigs() {
        Map<String, Object> props = new HashMap<>();
        // list of host:port pairs used for establishing the initial connections to the Kakfa cluster
        props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers);
        props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
        props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, TaskContextSerializer.class);
        return props;
    }

    @Bean
    public ProducerFactory<String, TaskContext> producerFactory() {
        return new DefaultKafkaProducerFactory<String, TaskContext>(producerConfigs());
    }

    @Bean
    public KafkaTemplate<String, TaskContext> kafkaTemplate() {
        return new KafkaTemplate<>(producerFactory());
    }

    @Bean
    public KafkaSender kafkaSender() {
        return new KafkaSender();
    }
}