content: /*
   * Copyright (C) 2012-2023 52°North Spatial Information Research GmbH
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 as published
   * by the Free Software Foundation.
   *
   * If the program is linked with libraries which are licensed under one of
   * the following licenses, the combination of the program with the linked
   * library is not considered a "derivative work" of the program:
   *
   *     - Apache License, version 2.0
   *     - Apache Software License, version 1.0
   *     - GNU Lesser General Public License, version 3
   *     - Mozilla Public License, versions 1.0, 1.1 and 2.0
   *     - Common Development and Distribution License (CDDL), version 1.0
   *
   * Therefore the distribution of the program linked with libraries licensed
   * under the aforementioned licenses, is permitted by the copyright holders
   * if the distribution is compliant with both the GNU General Public
   * License version 2 and the aforementioned licenses.
   *
   * This program is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
   * Public License for more details.
   */
  package org.n52.sos.web.admin;
  
  
  import javax.inject.Inject;
  
  import org.joda.time.DateTime;
  import org.n52.iceland.cache.ContentCacheController;
  import org.n52.janmayen.Json;
  import org.n52.shetland.ogc.gml.time.TimePeriod;
  import org.n52.shetland.util.ReferencedEnvelope;
  import org.n52.sos.web.common.AbstractController;
  import org.n52.sos.web.common.ControllerConstants;
  import org.springframework.stereotype.Controller;
  import org.springframework.web.bind.annotation.RequestMapping;
  import org.springframework.web.bind.annotation.RequestMethod;
  import org.springframework.web.bind.annotation.ResponseBody;
  
  import com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility;
  import com.fasterxml.jackson.annotation.PropertyAccessor;
  import com.fasterxml.jackson.core.JsonProcessingException;
  import com.fasterxml.jackson.core.Version;
  import com.fasterxml.jackson.databind.ObjectMapper;
  import com.fasterxml.jackson.databind.SerializationFeature;
  import com.fasterxml.jackson.databind.module.SimpleModule;
  import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
  
  /**
   * @since 4.0.0
   *
   */
  @Controller
  public class AdminCacheController extends AbstractController {
      private static final ObjectMapper OBJECT_MAPPER = buildObjectMapper();
  
      @Inject
      private ContentCacheController cacheController;
  
      @Inject
      private CacheSummaryHandler cacheSummaryHandler;
  
      @RequestMapping(value = ControllerConstants.Paths.ADMIN_CACHE, method = RequestMethod.GET)
      public String view() {
          return ControllerConstants.Views.ADMIN_CACHE;
      }
  
      @ResponseBody
      @RequestMapping(value = ControllerConstants.Paths.ADMIN_CACHE_SUMMARY,
                      method = RequestMethod.GET,
                      produces = "application/json; charset=UTF-8")
      public String getCacheSummary() {
          return Json.print(Json.toJSON(cacheSummaryHandler.getCacheValues(cacheController)));
      }
  
      @ResponseBody
      @RequestMapping(value = ControllerConstants.Paths.ADMIN_CACHE_DUMP,
                      method = RequestMethod.GET,
                      produces = "application/json; charset=UTF-8")
      public String getCacheDump() throws JsonProcessingException {
          return OBJECT_MAPPER.writeValueAsString(cacheController.getCache());
      }
  
      private static ObjectMapper buildObjectMapper() {
          ObjectMapper om = new ObjectMapper();
  
          //enable pretty printing
          om.enable(SerializationFeature.INDENT_OUTPUT);
  
          //specify which types should be serialized using toString
          SimpleModule module = new SimpleModule("CacheSerializerModule", new Version(1, 0, 0, null, null, null));
          module.addSerializer(DateTime.class, new ToStringSerializer());
          module.addSerializer(TimePeriod.class, new ToStringSerializer());
          module.addSerializer(ReferencedEnvelope.class, new ToStringSerializer());
          om.registerModule(module);
  
          //set property visibility
          om.setVisibility(PropertyAccessor.GETTER, Visibility.NON_PRIVATE);
          om.setVisibility(PropertyAccessor.IS_GETTER, Visibility.NON_PRIVATE);
          return om;
      }
  }
  