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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2022 Bell Canada. All rights reserved.
* ================================================================================
* 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.policy.api.main.config;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonParser;
import com.google.gson.JsonSerializer;
import java.util.Arrays;
import java.util.List;
import org.onap.policy.api.main.config.converter.StringToEnumConverter;
import org.onap.policy.common.spring.utils.YamlHttpMessageConverter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.format.FormatterRegistry;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import springfox.documentation.spring.web.json.Json;
/**
* Register custom converters to Spring configuration.
*/
@Configuration
public class WebConfig implements WebMvcConfigurer {
@Override
public void addFormatters(FormatterRegistry registry) {
registry.addConverter(new StringToEnumConverter());
}
@Override
public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
var yamlConverter = new YamlHttpMessageConverter();
yamlConverter.setSupportedMediaTypes(Arrays.asList(MediaType.parseMediaType("application/yaml")));
converters.add(yamlConverter);
}
/**
* Swagger uses {{@link springfox.documentation.spring.web.json.Json}} which leads to Gson serialization errors.
* Hence, we customize a typeAdapter on the Gson bean.
*
* @return customised GSON instance.
*/
@Bean
public Gson gson() {
GsonBuilder gsonBuilder = new GsonBuilder();
JsonSerializer<Json> serializer =
(json, type, jsonSerializationContext) -> JsonParser.parseString(json.value());
gsonBuilder.registerTypeAdapter(Json.class, serializer);
return gsonBuilder.create();
}
}
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