code: /**
   * This file is part of Eclipse Steady.
   *
   * 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
   * SPDX-FileCopyrightText: Copyright (c) 2018-2020 SAP SE or an SAP affiliate company and Eclipse Steady contributors
   */
  package org.eclipse.steady.cia.rest;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import org.eclipse.steady.java.sign.ASTConstructBodySignature;
  import org.eclipse.steady.java.sign.ASTSignatureChange;
  import org.eclipse.steady.java.sign.gson.ASTConstructBodySignatureDeserializer;
  import org.eclipse.steady.java.sign.gson.ASTConstructBodySignatureSerializer;
  import org.eclipse.steady.java.sign.gson.ASTSignatureChangeSerializer;
  import org.eclipse.steady.python.sign.PythonConstructDigest;
  import org.eclipse.steady.python.sign.PythonConstructDigestSerializer;
  import org.springdoc.core.GroupedOpenApi;
  import org.springframework.boot.SpringApplication;
  import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
  import org.springframework.boot.builder.SpringApplicationBuilder;
  import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
  import org.springframework.context.annotation.Bean;
  import org.springframework.context.annotation.ComponentScan;
  import org.springframework.context.annotation.Configuration;
  import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
  
  import com.fasterxml.jackson.databind.JsonDeserializer;
  import com.fasterxml.jackson.databind.JsonSerializer;
  
  /**
   * <p>MainController class.</p>
   */
  @Configuration
  @ComponentScan({"org.eclipse.steady.cia.util,org.eclipse.steady.cia.rest"})
  @EnableAutoConfiguration
  public class MainController extends SpringBootServletInitializer {
  
    /**
     * <p>backendApi.</p>
     *
     * @return a {@link org.springdoc.core.GroupedOpenApi} object.
     */
    @Bean
    public GroupedOpenApi publicApi() {
      return GroupedOpenApi.builder().group("public").pathsToMatch("/**").build();
    }
  
    /**
     * Can be used to do some initialization at application startup, but does not do anything right now.
     *
     * @return a {@link org.springframework.http.converter.json.Jackson2ObjectMapperBuilder} object.
     */
    //	@Bean
    //	CommandLineRunner init() { return null; }
    //
    @Bean
    public Jackson2ObjectMapperBuilder jacksonBuilder() {
      final Jackson2ObjectMapperBuilder builder = new Jackson2ObjectMapperBuilder();
  
      builder.defaultViewInclusion(true);
      // builder.indentOutput(true).dateFormat(new SimpleDateFormat("yyyy-MM-dd"));
  
      // Custom serializers
      Map<Class<?>, JsonSerializer<?>> custom_serializers =
          new HashMap<Class<?>, JsonSerializer<?>>();
      custom_serializers.put(ASTSignatureChange.class, new ASTSignatureChangeSerializer());
      custom_serializers.put(
          ASTConstructBodySignature.class, new ASTConstructBodySignatureSerializer());
      custom_serializers.put(PythonConstructDigest.class, new PythonConstructDigestSerializer());
      builder.serializersByType(custom_serializers);
  
      // Custom de-serializers
      Map<Class<?>, JsonDeserializer<?>> custom_deserializers =
          new HashMap<Class<?>, JsonDeserializer<?>>();
      custom_deserializers.put(
          ASTConstructBodySignature.class, new ASTConstructBodySignatureDeserializer());
      builder.deserializersByType(custom_deserializers);
  
      return builder;
    }
  
    /**
     * <p>main.</p>
     *
     * @param args an array of {@link java.lang.String} objects.
     */
    public static void main(String[] args) {
      SpringApplication.run(MainController.class, args);
    }
  
    /** {@inheritDoc} */
    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
      return application.sources(MainController.class);
    }
  }
  