KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > net > sourceforge > cruisecontrol > bootstrappers > SnapshotCMBootstrapper


1 /********************************************************************************
2  * CruiseControl, a Continuous Integration Toolkit
3  * Copyright (c) 2004, ThoughtWorks, Inc.
4  * 651 W Washington Ave. Suite 600
5  * Chicago, IL 60661 USA
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * + Redistributions of source code must retain the above copyright
13  * notice, this list of conditions and the following disclaimer.
14  *
15  * + Redistributions in binary form must reproduce the above
16  * copyright notice, this list of conditions and the following
17  * disclaimer in the documentation and/or other materials provided
18  * with the distribution.
19  *
20  * + Neither the name of ThoughtWorks, Inc., CruiseControl, nor the
21  * names of its contributors may be used to endorse or promote
22  * products derived from this software without specific prior
23  * written permission.
24  *
25  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR
29  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
30  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
31  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
32  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36  ********************************************************************************/
37 package net.sourceforge.cruisecontrol.bootstrappers;
38
39 import java.io.PrintWriter JavaDoc;
40
41 import net.sourceforge.cruisecontrol.Bootstrapper;
42 import net.sourceforge.cruisecontrol.CruiseControlException;
43 import net.sourceforge.cruisecontrol.util.Commandline;
44 import net.sourceforge.cruisecontrol.util.StreamPumper;
45
46 import org.apache.log4j.Logger;
47
48 /**
49  * Since we rely on our build.xml to handle updating our source code, there has
50  * always been a problem with what happens when the build.xml file itself
51  * changes. Previous workarounds have included writing a wrapper build.xml that
52  * will check out the "real" build.xml. This class is a substitute for that
53  * practice.
54  *
55  * The SnapshotCMBootstrapper will handle updating a single file from
56  * SnapshotCM before the build begins.
57  *
58  * Usage:
59  *
60  * <snapshotcmbootstrapper file="" />
61  *
62  * @author patrick.conant@hp.com
63  */
64 public class SnapshotCMBootstrapper implements Bootstrapper {
65
66     /** enable logging for this class */
67     private static final Logger LOG = Logger.getLogger(SnapshotCMBootstrapper.class);
68
69     /**
70      * Reference to the file to bootstrap.
71      */
72     private String JavaDoc filename;
73
74
75     public void setFile(String JavaDoc name) {
76         filename = name;
77     }
78
79     /**
80      * Update the specified file.
81      */
82     public void bootstrap() {
83         Commandline commandLine = buildUpdateCommand();
84         
85         if (LOG.isDebugEnabled()) {
86             LOG.debug("Executing: " + commandLine.toString());
87         }
88         try {
89             Process JavaDoc p = Runtime.getRuntime().exec(commandLine.getCommandline());
90             StreamPumper errorPumper =
91                 new StreamPumper(p.getErrorStream(), new PrintWriter JavaDoc(System.err, true));
92             new Thread JavaDoc(errorPumper).start();
93             p.waitFor();
94             p.getInputStream().close();
95             p.getOutputStream().close();
96             p.getErrorStream().close();
97         } catch (Exception JavaDoc e) {
98             LOG.error("Error executing SnapshotCM update command", e);
99         }
100     }
101
102     public void validate() throws CruiseControlException {
103         if (filename == null) {
104             throw new CruiseControlException("'file' is required for SnapshotCMBootstrapper");
105         }
106     }
107
108     protected Commandline buildUpdateCommand() {
109         Commandline commandLine = new Commandline();
110         commandLine.setExecutable("wco");
111
112         commandLine.createArgument().setValue("-fR");
113         commandLine.createArgument().setValue(filename);
114
115         return commandLine;
116     }
117
118 }
119
Popular Tags