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.controller.internal;
  
  import java.util.HashSet;
  import java.util.Map;
  import java.util.Set;
  
  import org.apache.ambari.server.controller.spi.NoSuchParentResourceException;
  import org.apache.ambari.server.controller.spi.NoSuchResourceException;
  import org.apache.ambari.server.controller.spi.Predicate;
  import org.apache.ambari.server.controller.spi.Request;
  import org.apache.ambari.server.controller.spi.RequestStatus;
  import org.apache.ambari.server.controller.spi.Resource;
  import org.apache.ambari.server.controller.spi.ResourceAlreadyExistsException;
  import org.apache.ambari.server.controller.spi.SystemException;
  import org.apache.ambari.server.controller.spi.UnsupportedPropertyException;
  import org.apache.ambari.server.orm.dao.PermissionDAO;
  import org.apache.ambari.server.orm.entities.PermissionEntity;
  
  import com.google.common.collect.ImmutableMap;
  import com.google.common.collect.Sets;
  
  /**
   * Resource provider for permission instances.
   */
  public class PermissionResourceProvider extends AbstractResourceProvider {
  
    /**
     * Data access object used to obtain permission entities.
     */
    private static PermissionDAO permissionDAO;
  
    /**
     * Permission property id constants.
     */
    public static final String PERMISSION_ID_PROPERTY_ID   = "PermissionInfo/permission_id";
    public static final String PERMISSION_NAME_PROPERTY_ID = "PermissionInfo/permission_name";
    public static final String PERMISSION_LABEL_PROPERTY_ID = "PermissionInfo/permission_label";
    public static final String RESOURCE_NAME_PROPERTY_ID   = "PermissionInfo/resource_name";
    public static final String SORT_ORDER_PROPERTY_ID   = "PermissionInfo/sort_order";
  
  
    /**
     * The key property ids for a permission resource.
     */
    private static final Map<Resource.Type, String> keyPropertyIds = ImmutableMap.<Resource.Type, String>builder()
        .put(Resource.Type.Permission, PERMISSION_ID_PROPERTY_ID)
        .build();
  
    /**
     * The property ids for a permission resource.
     */
    private static final Set<String> propertyIds = Sets.newHashSet(
        PERMISSION_ID_PROPERTY_ID,
        PERMISSION_NAME_PROPERTY_ID,
        PERMISSION_LABEL_PROPERTY_ID,
        RESOURCE_NAME_PROPERTY_ID,
        SORT_ORDER_PROPERTY_ID);
  
  
    // ----- Constructors ------------------------------------------------------
  
    /**
     * Construct a permission resource provider.
     */
    public PermissionResourceProvider() {
      super(propertyIds, keyPropertyIds);
    }
  
  
    // ----- PermissionResourceProvider ----------------------------------------
  
    /**
     * Static initialization.
     *
     * @param dao  permission data access object
     */
    public static void init(PermissionDAO dao) {
      permissionDAO = dao;
    }
  
  
    // ----- ResourceProvider --------------------------------------------------
  
    @Override
    public RequestStatus createResources(Request request)
        throws SystemException, UnsupportedPropertyException,
        ResourceAlreadyExistsException, NoSuchParentResourceException {
      throw new UnsupportedOperationException("Not supported.");
    }
  
    @Override
    public Set<Resource> getResources(Request request, Predicate predicate)
        throws SystemException, UnsupportedPropertyException, NoSuchResourceException, NoSuchParentResourceException {
  
      Set<Resource> resources    = new HashSet<>();
      Set<String>   requestedIds = getRequestPropertyIds(request, predicate);
  
      for(PermissionEntity permissionEntity : permissionDAO.findAll()){
  
        resources.add(toResource(permissionEntity, requestedIds));
      }
  
      return resources;
    }
  
    @Override
    public RequestStatus updateResources(Request request, Predicate predicate)
        throws SystemException, UnsupportedPropertyException, NoSuchResourceException, NoSuchParentResourceException {
      throw new UnsupportedOperationException("Not supported.");
    }
  
    @Override
    public RequestStatus deleteResources(Request request, Predicate predicate)
        throws SystemException, UnsupportedPropertyException, NoSuchResourceException, NoSuchParentResourceException {
      throw new UnsupportedOperationException("Not supported.");
    }
  
    @Override
    public Map<Resource.Type, String> getKeyPropertyIds() {
      return keyPropertyIds;
    }
  
  
    // ----- AbstractResourceProvider ------------------------------------------
  
    @Override
    protected Set<String> getPKPropertyIds() {
      return new HashSet<>(keyPropertyIds.values());
    }
  
  
    // ----- helper methods ----------------------------------------------------
  
    // convert the given permission entity to a resource
    private Resource toResource(PermissionEntity entity, Set<String> requestedIds) {
      Resource resource = new ResourceImpl(Resource.Type.Permission);
  
      setResourceProperty(resource, PERMISSION_ID_PROPERTY_ID, entity.getId(), requestedIds);
      setResourceProperty(resource, PERMISSION_NAME_PROPERTY_ID, entity.getPermissionName(), requestedIds);
      setResourceProperty(resource, PERMISSION_LABEL_PROPERTY_ID, entity.getPermissionLabel(), requestedIds);
      setResourceProperty(resource, RESOURCE_NAME_PROPERTY_ID, entity.getResourceType().getName(), requestedIds);
      setResourceProperty(resource, SORT_ORDER_PROPERTY_ID, entity.getSortOrder(), requestedIds);
  
      return resource;
    }
  }
  