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1 package net.jforum.util.legacy.clickstream.config;
2
3 import java.io.File  ;
4 import java.io.IOException ;
5
6 import javax.xml.parsers.ParserConfigurationException ;
7 import javax.xml.parsers.SAXParser ;
8 import javax.xml.parsers.SAXParserFactory ;
9
10 import net.jforum.util.preferences.ConfigKeys;
11 import net.jforum.util.preferences.SystemGlobals;
12
13 import org.apache.log4j.Logger;
14 import org.xml.sax.Attributes ;
15 import org.xml.sax.InputSource ;
16 import org.xml.sax.SAXException ;
17 import org.xml.sax.helpers.DefaultHandler ;
18
19
26 public class ConfigLoader
27 {
28 private static final Logger log = Logger.getLogger(ConfigLoader.class);
29
30 private ClickstreamConfig config;
31
32 private static ConfigLoader instance = new ConfigLoader();;
33
34 public static ConfigLoader instance()
35 {
36 return instance;
37 }
38
39 private ConfigLoader() {}
40
41 public ClickstreamConfig getConfig()
42 {
43 if (this.config != null) {
44 return this.config;
45 }
46
47 synchronized (instance) {
48 this.config = new ClickstreamConfig();
49
50 try {
51 SAXParser parser = SAXParserFactory.newInstance().newSAXParser();
52
53 String path = SystemGlobals.getValue(ConfigKeys.CLICKSTREAM_CONFIG);
54
55 if (path != null) {
56 if (log.isInfoEnabled()) {
57 log.info("Loading clickstream config from " + path);
58 }
59
60 File fileInput = new File (path);
61
62 if (fileInput.exists()) {
63 parser.parse(fileInput, new ConfigHandler());
64 }
65 else {
66 parser.parse(new InputSource (path), new ConfigHandler());
67 }
68 }
69 return config;
70 }
71 catch (SAXException e) {
72 log.error("Could not parse clickstream XML", e);
73 throw new RuntimeException (e.getMessage());
74 }
75 catch (IOException e) {
76 log.error("Could not read clickstream config from stream", e);
77 throw new RuntimeException (e.getMessage());
78 }
79 catch (ParserConfigurationException e) {
80 log.fatal("Could not obtain SAX parser", e);
81 throw new RuntimeException (e.getMessage());
82 }
83 catch (RuntimeException e) {
84 log.fatal("RuntimeException", e);
85 throw e;
86 }
87 catch (Throwable e) {
88 log.fatal("Exception", e);
89 throw new RuntimeException (e.getMessage());
90 }
91 }
92 }
93
94
97 private class ConfigHandler extends DefaultHandler
98 {
99 public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException
100 {
101 if (qName.equals("bot-host")) {
102 config.addBotHost(attributes.getValue("name"));
103 }
104 else if (qName.equals("bot-agent")) {
105 config.addBotAgent(attributes.getValue("name"));
106 }
107 }
108 }
109 }
110 |
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