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.cassandra.cql3.statements;
  
  import org.apache.cassandra.auth.Permission;
  import org.apache.cassandra.auth.RoleResource;
  import org.apache.cassandra.config.DatabaseDescriptor;
  import org.apache.cassandra.cql3.RoleName;
  import org.apache.cassandra.exceptions.InvalidRequestException;
  import org.apache.cassandra.exceptions.RequestValidationException;
  import org.apache.cassandra.exceptions.UnauthorizedException;
  import org.apache.cassandra.service.ClientState;
  import org.apache.commons.lang3.builder.ToStringBuilder;
  import org.apache.commons.lang3.builder.ToStringStyle;
  
  public abstract class RoleManagementStatement extends AuthenticationStatement
  {
      protected final RoleResource role;
      protected final RoleResource grantee;
  
      public RoleManagementStatement(RoleName name, RoleName grantee)
      {
          this.role = RoleResource.role(name.getName());
          this.grantee = RoleResource.role(grantee.getName());
      }
  
      public void authorize(ClientState state) throws UnauthorizedException
      {
          super.checkPermission(state, Permission.AUTHORIZE, role);
      }
  
      public void validate(ClientState state) throws RequestValidationException
      {
          state.ensureNotAnonymous();
  
          if (!DatabaseDescriptor.getRoleManager().isExistingRole(role))
              throw new InvalidRequestException(String.format("%s doesn't exist", role.getRoleName()));
  
          if (!DatabaseDescriptor.getRoleManager().isExistingRole(grantee))
              throw new InvalidRequestException(String.format("%s doesn't exist", grantee.getRoleName()));
      }
      
      @Override
      public String toString()
      {
          return ToStringBuilder.reflectionToString(this, ToStringStyle.SHORT_PREFIX_STYLE);
      }
  }
  