1 /*

     2  * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 import sun.hotspot.WhiteBox;

    25 

    26 public class CheckContainerized {

    27     public static String OUTSIDE_OF_CONTAINER =

    28         "CheckContainerized: Running outside of a container";

    29     public static String INSIDE_A_CONTAINER =

    30         "CheckContainerized: Running inside a container";

    31 

    32     public static void main(String[] args) {

    33         System.out.println("CheckContainerized: Entering");

    34         WhiteBox wb = WhiteBox.getWhiteBox();

    35 

    36         if (wb.isContainerized()) {

    37             System.out.println(INSIDE_A_CONTAINER);

    38 

    39         } else {

    40             System.out.println(OUTSIDE_OF_CONTAINER);

    41         }

    42     }

    43 }