springfox.documentation.spring.web.ObjectMapperConfigurer.java Source code

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Here is the source code for springfox.documentation.spring.web.ObjectMapperConfigurer.java

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/*
 *
 *  Copyright 2015 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
 *
 *         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 springfox.documentation.spring.web;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.collect.Iterables;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.context.ApplicationEventPublisher;
import org.springframework.context.ApplicationEventPublisherAware;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter;
import springfox.documentation.schema.configuration.ObjectMapperConfigured;

import java.util.List;

import static com.google.common.collect.FluentIterable.*;
import static com.google.common.collect.Lists.*;

public class ObjectMapperConfigurer implements BeanPostProcessor, ApplicationEventPublisherAware {

    private ApplicationEventPublisher applicationEventPublisher;

    @Override
    public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {

        if (bean instanceof RequestMappingHandlerAdapter) {
            RequestMappingHandlerAdapter adapter = (RequestMappingHandlerAdapter) bean;
            adapter.setMessageConverters(configureMessageConverters(adapter.getMessageConverters()));
        }
        return bean;
    }

    @Override
    public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
        return bean;
    }

    @Override
    public void setApplicationEventPublisher(ApplicationEventPublisher applicationEventPublisher) {
        this.applicationEventPublisher = applicationEventPublisher;
    }

    private List<HttpMessageConverter<?>> configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        Iterable<MappingJackson2HttpMessageConverter> jackson2Converters = jackson2Converters(converters);
        if (Iterables.size(jackson2Converters) > 0) {
            for (MappingJackson2HttpMessageConverter each : jackson2Converters) {
                fireObjectMapperConfiguredEvent(each.getObjectMapper());
            }
        } else {
            converters.add(configuredMessageConverter());
        }
        return newArrayList(converters);
    }

    private Iterable<MappingJackson2HttpMessageConverter> jackson2Converters(
            List<HttpMessageConverter<?>> messageConverters) {
        return reverse(from(messageConverters).filter(MappingJackson2HttpMessageConverter.class).toList());
    }

    private MappingJackson2HttpMessageConverter configuredMessageConverter() {
        MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
        ObjectMapper objectMapper = new ObjectMapper();
        messageConverter.setObjectMapper(objectMapper);
        fireObjectMapperConfiguredEvent(objectMapper);
        return messageConverter;
    }

    private void fireObjectMapperConfiguredEvent(ObjectMapper objectMapper) {
        applicationEventPublisher.publishEvent(new ObjectMapperConfigured(this, objectMapper));
    }
}