/*
 * Copyright 2013-2021 the original author or authors.
 *
 * 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
 *
 *      https://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.springframework.cloud.sleuth.brave.instrument.messaging;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.kafka.core.ConsumerFactory;
import org.springframework.kafka.core.ProducerFactory;

/**
 * Bean post processor that wraps Kafka factories.
 *
 * @author Marcin Grzejszczak
 * @since 3.0.0
 */
public class KafkaFactoryBeanPostProcessor implements BeanPostProcessor {

	private final BeanFactory beanFactory;

	public KafkaFactoryBeanPostProcessor(BeanFactory beanFactory) {
		this.beanFactory = beanFactory;
	}

	@SuppressWarnings("unchecked")
	@Override
	public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
		if (bean instanceof ConsumerFactory) {
			ConsumerFactory factory = (ConsumerFactory) bean;
			if (factory.getPostProcessors().stream().noneMatch(o -> o instanceof TraceConsumerPostProcessor)) {
				factory.addPostProcessor(new TraceConsumerPostProcessor(this.beanFactory));
			}
		}
		else if (bean instanceof ProducerFactory) {
			ProducerFactory factory = (ProducerFactory) bean;
			if (factory.getPostProcessors().stream().noneMatch(o -> o instanceof TraceProducerPostProcessor)) {
				factory.addPostProcessor(new TraceProducerPostProcessor(this.beanFactory));
			}
		}
		return bean;
	}

}
