1 //
2 // ========================================================================
3 // Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
4 // ------------------------------------------------------------------------
5 // All rights reserved. This program and the accompanying materials
6 // are made available under the terms of the Eclipse Public License v1.0
7 // and Apache License v2.0 which accompanies this distribution.
8 //
9 // The Eclipse Public License is available at
10 // http://www.eclipse.org/legal/epl-v10.html
11 //
12 // The Apache License v2.0 is available at
13 // http://www.opensource.org/licenses/apache2.0.php
14 //
15 // You may elect to redistribute this code under either of these licenses.
16 // ========================================================================
17 //
18
19 package org.eclipse.jetty.server;
20
21 import java.io.File;
22 import java.io.IOException;
23 import java.nio.file.Files;
24 import java.nio.file.Path;
25
26 import org.eclipse.jetty.util.StringUtil;
27 import org.eclipse.jetty.util.log.Log;
28 import org.eclipse.jetty.util.log.Logger;
29
30 /**
31 * Display an optional Warning Message if the {jetty.home} and {jetty.base} are the same directory.
32 * <p>
33 * This is to warn about not recommended approach to setting up the Jetty Distribution.
34 */
35 public class HomeBaseWarning
36 {
37 private static final Logger LOG = Log.getLogger(HomeBaseWarning.class);
38
39 public HomeBaseWarning()
40 {
41 boolean showWarn = false;
42
43 String home = System.getProperty("jetty.home");
44 String base = System.getProperty("jetty.base");
45
46 if (StringUtil.isBlank(base))
47 {
48 // no base defined? then we are likely running
49 // via direct command line.
50 return;
51 }
52
53 Path homePath = new File(home).toPath();
54 Path basePath = new File(base).toPath();
55
56 try
57 {
58 showWarn = Files.isSameFile(homePath,basePath);
59 }
60 catch (IOException e)
61 {
62 LOG.ignore(e);
63 // Can't definitively determine this state
64 return;
65 }
66
67 if (showWarn)
68 {
69 StringBuilder warn = new StringBuilder();
70 warn.append("This instance of Jetty is not running from a separate {jetty.base} directory");
71 warn.append(", this is not recommended. See documentation at http://www.eclipse.org/jetty/documentation/current/startup.html");
72 LOG.warn("{}",warn.toString());
73 }
74 }
75 }