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.security;
  
  import java.util.Set;
  
  /**
   * Used by {@link ThreadAwareSecurityManager} to determine whether access-control checks needs to be performed.
   */
  public final class SecurityThreadGroup extends ThreadGroup
  {
      private final Set<String> allowedPackages;
      private final ThreadInitializer threadInitializer;
  
      public SecurityThreadGroup(String name, Set<String> allowedPackages, ThreadInitializer threadInitializer)
      {
          super(name);
          this.allowedPackages = allowedPackages;
          this.threadInitializer = threadInitializer;
      }
  
      public void initializeThread()
      {
          threadInitializer.initializeThread();
      }
  
      public boolean isPackageAllowed(String pkg)
      {
          return allowedPackages == null || allowedPackages.contains(pkg);
      }
  
      @FunctionalInterface
      public interface ThreadInitializer
      {
          void initializeThread();
      }
  }
  