io.micronaut.reactive.reactor.converters.ObjectToMonoConverter Maven / Gradle / Ivy
/*
* Copyright 2017-2019 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.reactive.reactor.converters;
import io.micronaut.context.annotation.Requires;
import io.micronaut.core.convert.ConversionContext;
import io.micronaut.core.convert.TypeConverter;
import org.reactivestreams.Publisher;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import javax.inject.Singleton;
import java.util.Optional;
/**
* Converts a {@link Object} to a {@link reactor.core.publisher.Mono}.
*
* @author Graeme Rocher
* @since 1.0
*/
@Singleton
@Requires(classes = Flux.class)
public class ObjectToMonoConverter implements TypeConverter {
@SuppressWarnings("unchecked")
@Override
public Optional convert(Object object, Class targetType, ConversionContext context) {
if (object instanceof Publisher) {
return Optional.of(Mono.from((Publisher) object));
} else {
return Optional.of(Mono.just(object));
}
}
}