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Java > Open Source Codes > net > sourceforge > cruisecontrol > ServerXMLHelper


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37 package net.sourceforge.cruisecontrol;
38
39 import net.sourceforge.cruisecontrol.util.Util;
40 import org.apache.log4j.Logger;
41 import org.jdom.Attribute;
42 import org.jdom.DataConversionException;
43 import org.jdom.Element;
44
45 import java.io.File JavaDoc;
46
47 /**
48  * @author Jared Richardson jared.richardson@sas.com
49  * <p/>
50  * this routine encapsulates the config file for the application.
51  * it fetches a value from the config file and handles errors.
52  */

53
54 public class ServerXMLHelper {
55     private static final Logger LOG = Logger.getLogger(ServerXMLHelper.class);
56
57     private int numThreads = 1;
58
59     public ServerXMLHelper(File JavaDoc configFile) {
60         try {
61             Element configLogElement = Util.loadConfigFile(configFile);
62             Element systemElement = configLogElement.getChild("system");
63             if (systemElement == null) {
64                 LOG.debug("no system element found in config.xml");
65                 return;
66             }
67             Element configurationElement = systemElement.getChild("configuration");
68             if (configurationElement == null) {
69                 LOG.debug("no configuraiton element found in config.xml");
70                 return;
71             }
72             Element threadElement = configurationElement.getChild("threads");
73             if (threadElement == null) {
74                 LOG.debug("no threads element found in config.xml");
75                 return;
76             }
77             Attribute threadCount = threadElement.getAttribute("count");
78             LOG.debug("count attribute on threads is " + threadCount.toString());
79             try {
80                 numThreads = threadCount.getIntValue();
81             } catch (DataConversionException dce) {
82                 LOG.error("Expected a numeric value for system-configuration-threads-count in config.xml but found "
83                         + threadCount.toString(), dce);
84                 numThreads = 1;
85             }
86         } catch (Exception JavaDoc e) {
87             LOG.warn("error parsing thread count from config file; defaulting to 1 thread.", e);
88             numThreads = 1;
89         }
90     }
91
92     /**
93      * @return int the number of threads that CruiseControl should allow to run at the same time
94      * to process pending build requests
95      */

96     public int getNumThreads() {
97         return numThreads;
98     }
99 }
100
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