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KafkaBodyBinder.java
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KafkaBodyBinder.java
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/*
* Copyright 2017-2018 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
*
* 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 io.micronaut.configuration.kafka.bind;
import io.micronaut.core.convert.ArgumentConversionContext;
import io.micronaut.core.convert.ConversionService;
import io.micronaut.http.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 Graeme Rocher
* @since 1.0
*/
@Singleton
public class KafkaBodyBinder<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;
}
}