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.sidecar.acl;
  
  import com.google.inject.Inject;
  import com.google.inject.Singleton;
  import org.apache.cassandra.sidecar.acl.authorization.SuperUserCache;
  import org.apache.cassandra.sidecar.config.AccessControlConfiguration;
  import org.apache.cassandra.sidecar.config.SidecarConfiguration;
  
  /**
   * Evaluates if provided identity is an admin identity.
   */
  @Singleton
  public class AdminIdentityResolver
  {
      private final IdentityToRoleCache identityToRoleCache;
      private final SuperUserCache superUserCache;
      private final AccessControlConfiguration config;
  
      @Inject
      public AdminIdentityResolver(IdentityToRoleCache identityToRoleCache,
                                   SuperUserCache superUserCache,
                                   SidecarConfiguration sidecarConfiguration)
      {
          this.identityToRoleCache = identityToRoleCache;
          this.superUserCache = superUserCache;
          this.config = sidecarConfiguration.accessControlConfiguration();
      }
  
      public boolean isAdmin(String identity)
      {
          if (config.adminIdentities().contains(identity))
          {
              return true;
          }
  
          String role = identityToRoleCache.get(identity);
          if (role == null)
          {
              return false;
          }
          // Cassandra superusers have admin privileges
          return superUserCache.isSuperUser(role);
      }
  }
  