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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 2012-2018 Ping Identity Corporation
 * All Rights Reserved.
 */
/*
 * Copyright (C) 2012-2018 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.ldap.sdk;



import java.util.List;
import java.util.concurrent.atomic.AtomicReference;

import com.unboundid.util.Debug;



/**
 * This class provides a task that will establish a connection for use in a
 * connection pool.
 */
final class ParallelPoolConnectorTask
      implements Runnable
{
  // A reference to the first exception caught while trying to create a
  // connection.
  private final AtomicReference firstException;

  // Indicates whether to throw an exception if a problem is encountered while
  // attempting to establish the connections.
  private final boolean throwOnConnectFailure;

  // The connection pool with which the connection is associated.
  private final LDAPConnectionPool pool;

  // A list to which the established connection will be added.
  private final List connList;



  /**
   * Creates a new instance of this connector task.
   *
   * @param  pool                   The pool with which the created connection
   *                                will be established.
   * @param  connList               The list to which the established connection
   *                                will be added.  It must be threadsafe.
   * @param  firstException         A reference to the first exception caught
   *                                while attempting to establish a connection.
   * @param  throwOnConnectFailure  If an exception should be thrown if a
   *                                problem is encountered while attempting to
   *                                create the specified initial number of
   *                                connections.  If {@code true}, then the
   *                                attempt to create the pool will fail.if any
   *                                connection cannot be established.  If
   *                                {@code false}, then the pool will be created
   *                                but may have fewer than the initial number
   *                                of connections (or possibly no connections).
   */
  ParallelPoolConnectorTask(final LDAPConnectionPool pool,
                            final List connList,
                            final AtomicReference firstException,
                            final boolean throwOnConnectFailure)
  {
    this.pool                  = pool;
    this.connList              = connList;
    this.firstException        = firstException;
    this.throwOnConnectFailure = throwOnConnectFailure;
  }



  /**
   * Establishes the connection, or catches an exception while trying.
   */
  @Override()
  public void run()
  {
    try
    {
      if (throwOnConnectFailure && (firstException.get() != null))
      {
        return;
      }

      connList.add(pool.createConnection());
    }
    catch (final LDAPException le)
    {
      Debug.debugException(le);
      if (throwOnConnectFailure)
      {
        firstException.compareAndSet(null, le);
      }
    }
  }
}