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JDBC driver for MariaDB and MySQL
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/*
 *
 * MariaDB Client for Java
 *
 * Copyright (c) 2012-2014 Monty Program Ab.
 * Copyright (c) 2015-2020 MariaDB Corporation Ab.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library 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 Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along
 * with this library; if not, write to Monty Program Ab [email protected].
 *
 * This particular MariaDB Client for Java file is work
 * derived from a Drizzle-JDBC. Drizzle-JDBC file which is covered by subject to
 * the following copyright and notice provisions:
 *
 * Copyright (c) 2009-2011, Marcus Eriksson
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright notice, this list
 * of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice, this
 * list of conditions and the following disclaimer in the documentation and/or
 * other materials provided with the distribution.
 *
 * Neither the name of the driver nor the names of its contributors may not be
 * used to endorse or promote products derived from this software without specific
 * prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS  AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
 * OF SUCH DAMAGE.
 *
 */

package org.mariadb.jdbc.internal.io.socket;

import com.sun.jna.Platform;
import java.io.IOException;
import org.mariadb.jdbc.internal.util.Utils;

public class SocketUtility {

  /**
   * Create socket according to options. In case of compilation ahead of time, will throw an error
   * if dependencies found, then use default socket implementation.
   *
   * @return Socket
   */
  @SuppressWarnings("unchecked")
  public static SocketHandlerFunction getSocketHandler() {
    try {
      // forcing use of JNA to ensure AOT compilation
      Platform.getOSType();

      return (options, host) -> {
        if (options.pipe != null) {
          return new NamedPipeSocket(host, options.pipe);
        } else if (options.localSocket != null) {
          try {
            return new UnixDomainSocket(options.localSocket);
          } catch (RuntimeException re) {
            throw new IOException(re.getMessage(), re.getCause());
          }
        } else if (options.sharedMemory != null) {
          try {
            return new SharedMemorySocket(options.sharedMemory);
          } catch (RuntimeException re) {
            throw new IOException(re.getMessage(), re.getCause());
          }
        } else {
          return Utils.standardSocket(options, host);
        }
      };
    } catch (Throwable cle) {
      // jna jar's are not in classpath
    }
    return (options, host) -> Utils.standardSocket(options, host);
  }
}