content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 org.apache.ambari.server.api.services.views;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import jakarta.ws.rs.core.HttpHeaders;
  import jakarta.ws.rs.core.Response;
  import jakarta.ws.rs.core.UriInfo;
  
  import org.apache.ambari.server.api.resources.ResourceInstance;
  import org.apache.ambari.server.api.services.BaseService;
  import org.apache.ambari.server.api.services.Request;
  import org.apache.ambari.server.controller.spi.Resource;
  import org.apache.ambari.server.orm.entities.ViewEntity;
  import org.apache.ambari.server.orm.entities.ViewInstanceEntity;
  import org.apache.ambari.view.ViewResourceHandler;
  
  /**
   * View sub-resource service.
   */
  public class ViewSubResourceService extends BaseService implements ViewResourceHandler {
    /**
     * The type of the sub-resource.
     */
    private final Resource.Type type;
  
    /**
     * The associated view name.
     */
    private final String viewName;
  
    /**
     * The view version.
     */
    private final String version;
  
    /**
     * The associated view instance name.
     */
    private final String instanceName;
  
  
    // ----- Constructors ------------------------------------------------------
  
    /**
     * Construct a view sub-resource service.
     */
    public ViewSubResourceService(Resource.Type type, ViewInstanceEntity viewInstanceDefinition) {
      ViewEntity viewEntity = viewInstanceDefinition.getViewEntity();
  
      this.type         = type;
      this.viewName     = viewEntity.getCommonName();
      this.version      = viewEntity.getVersion();
      this.instanceName = viewInstanceDefinition.getName();
    }
  
  
    // ----- ViewResourceHandler -----------------------------------------------
  
    @Override
    public Response handleRequest(HttpHeaders headers, UriInfo ui,
                                  RequestType requestType, MediaType mediaType,
                                  String resourceId) {
      return handleRequest(headers, null, ui, getRequestType(requestType),
          getMediaType(mediaType), createResource(resourceId));
    }
  
    @Override
    public Response handleRequest(HttpHeaders headers, UriInfo ui, String resourceId) {
      return handleRequest(headers, null, ui, Request.Type.GET,
          createResource(resourceId));
    }
  
  
    // ----- helper methods ----------------------------------------------------
  
    // create a resource with the given id
    protected ResourceInstance createResource(String resourceId) {
      Map<Resource.Type,String> mapIds = new HashMap<>();
  
      mapIds.put(Resource.Type.View, viewName);
      mapIds.put(Resource.Type.ViewVersion, version);
      mapIds.put(Resource.Type.ViewInstance, instanceName);
  
      if (resourceId != null) {
        mapIds.put(type, resourceId);
      }
      return super.createResource(type, mapIds);
    }
  
    // get the internal request type from the view API request type
    private Request.Type getRequestType(RequestType type) {
      switch (type) {
        case GET:
          return Request.Type.GET;
        case POST:
          return Request.Type.POST;
        case PUT:
          return Request.Type.PUT;
        case DELETE:
          return Request.Type.DELETE;
        case QUERY_POST:
          return Request.Type.QUERY_POST;
      }
      throw new IllegalArgumentException("Unknown resource type " + type);
    }
  
    // get the JAX-RS media type from the view media type
    private jakarta.ws.rs.core.MediaType getMediaType(MediaType type) {
      switch (type) {
        case TEXT_PLAIN:
          return jakarta.ws.rs.core.MediaType.TEXT_PLAIN_TYPE;
        case APPLICATION_JSON:
          return jakarta.ws.rs.core.MediaType.APPLICATION_JSON_TYPE;
      }
      throw new IllegalArgumentException("Unknown media type " + type);
    }
  }
  