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The UnboundID LDAP SDK for Java is a fast, comprehensive, and easy-to-use Java API for communicating with LDAP directory servers and performing related tasks like reading and writing LDIF, encoding and decoding data using base64 and ASN.1 BER, and performing secure communication. This package contains the Standard Edition of the LDAP SDK, which is a complete, general-purpose library for communicating with LDAPv3 directory servers.

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/*
 * Copyright 2013-2022 Ping Identity Corporation
 * All Rights Reserved.
 */
/*
 * Copyright 2013-2022 Ping Identity Corporation
 *
 * Licensed 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.
 */
/*
 * Copyright (C) 2013-2022 Ping Identity Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License (GPLv2 only)
 * or the terms of the GNU Lesser General Public License (LGPLv2.1 only)
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see .
 */
package com.unboundid.util;



import java.util.concurrent.atomic.AtomicReference;

import com.unboundid.ldap.sdk.ResultCode;



/**
 * This class provides an implementation of a thread that will be invoked as a
 * command-line tool shutdown hook for tools in which the
 * {@link CommandLineTool#registerShutdownHook()} method is overridden to
 * return {@code true}.  It will simply invoke the tool's
 * {@link CommandLineTool#doShutdownHookProcessing(ResultCode)} method.
 */
final class CommandLineToolShutdownHook
      extends Thread
{
  // A reference to the result code that will be returned by the tool (if set).
  @NotNull private final AtomicReference resultCodeRef;

  // The tool whose doShutdownHookProcessing method will be invoked.
  @NotNull private final CommandLineTool tool;



  /**
   * Creates a new instance of this shutdown hook with the provided information.
   *
   * @param  tool           The tool whose {@code doShutdownHookProcessing}
   *                        method will be called when this shutdown hook is
   *                        invoked.
   * @param  resultCodeRef  A reference to the result code that will be returned
   *                        by the tool.
   */
  CommandLineToolShutdownHook(@NotNull final CommandLineTool tool,
       @NotNull final AtomicReference resultCodeRef)
  {
    this.tool          = tool;
    this.resultCodeRef = resultCodeRef;
  }



  /**
   * Invokes the associated tool's {@code doShutdownHookProcessing} method.
   */
  @Override()
  public void run()
  {
    tool.doShutdownHookProcessing(resultCodeRef.get());
  }
}