/* * Copyright 2017-2020 original 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 io.micronaut.configuration.kafka.bind; import io.micronaut.core.convert.ConversionService; import io.micronaut.core.convert.ArgumentConversionContext; import io.micronaut.messaging.annotation.Body; import org.apache.kafka.clients.consumer.ConsumerRecord; import javax.inject.Singleton; import java.util.Optional; /** * The default binder that binds the body of a ConsumerRecord. * * @param <T> The target generic type * @author James Kleeh * @since 1.0 */ @Singleton public class KafkaMessagingBodyBinder<T> implements AnnotatedConsumerRecordBinder<Body, T> { @Override public Class<Body> annotationType() { return Body.class; } @Override public BindingResult<T> bind(ArgumentConversionContext<T> context, ConsumerRecord<?, ?> source) { Object value = source.value(); Optional<T> converted = ConversionService.SHARED.convert(value, context); return () -> converted; } }