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1
4 package com.tc.config.schema.dynamic;
5
6 import com.tc.logging.TCLogger;
7 import com.tc.logging.TCLogging;
8
9 import java.io.File  ;
10 import java.io.IOException ;
11 import java.net.InetAddress ;
12 import java.net.UnknownHostException ;
13 import java.text.SimpleDateFormat ;
14 import java.util.Date ;
15
16
19 public class ParameterSubstituter {
20
21 private static final TCLogger logger = TCLogging.getLogger(ParameterSubstituter.class);
22
23 public static String substitute(String source) {
24 if (source == null) return null;
25
26 StringBuffer out = new StringBuffer ();
27 char[] sourceChars = source.toCharArray();
28
29 for (int i = 0; i < sourceChars.length; ++i) {
30 if (sourceChars[i] == '%') {
31 char nextChar = sourceChars[++i];
32 String value = "" + nextChar;
33
34 switch (nextChar) {
35 case 'd':
36 value = getUniqueTempDirectory();
37 break;
38
39 case 'D':
40 value = getDatestamp();
41 break;
42
43 case 'h':
44 value = getHostname();
45 break;
46
47 case 'i':
48 value = getIpAddress();
49 break;
50
51 case 'H':
52 value = System.getProperty("user.home");
53 break;
54
55 case 'n':
56 value = System.getProperty("user.name");
57 break;
58
59 case 'o':
60 value = System.getProperty("os.name");
61 break;
62
63 case 'a':
64 value = System.getProperty("os.arch");
65 break;
66
67 case 'v':
68 value = System.getProperty("os.version");
69 break;
70
71 case 't':
72 value = System.getProperty("java.io.tmpdir");
73 break;
74
75 case '(':
76 StringBuffer propertyName = new StringBuffer ();
77 boolean foundEnd = false;
78
79 while (++i < sourceChars.length) {
80 if (sourceChars[i] == ')') {
81 foundEnd = true;
82 break;
83 }
84 propertyName.append(sourceChars[i]);
85 }
86
87 if (foundEnd) {
88 String prop = propertyName.toString();
89 String defaultValue = "";
90 int index = prop.lastIndexOf(":");
91
92 if (index > 0) {
93 prop = prop.substring(0, index);
94 defaultValue = prop.substring(index + 1);
95 }
96
97 value = System.getProperty(prop);
98 if (value == null) value = defaultValue;
99 } else {
100 value = "%(" + propertyName.toString();
101 }
102 break;
103
104 default:
105 break;
107 }
108
109 out.append(value);
110 } else {
111 out.append(sourceChars[i]);
112 }
113 }
114
115 return out.toString();
116 }
117
118 private static String uniqueTempDirectory = null;
119
120 private static synchronized String getUniqueTempDirectory() {
121 if (uniqueTempDirectory == null) {
122 try {
123 File theFile = File.createTempFile("terracotta", "data");
124 theFile.delete();
125 if (!theFile.mkdir()) {
126 logger.warn("We were unable to create the directory '" + theFile.getAbsolutePath()
127 + "' as a temporary directory "
128 + "for Terracotta data; we will use the raw temporary directory, '"
129 + System.getProperty("java.io.tmpdir") + "', instead.");
130 uniqueTempDirectory = System.getProperty("java.io.tmpdir");
131 } else {
132 logger.info("Using directory '" + theFile.getAbsolutePath() + "' for data from this Terracotta process.");
133 uniqueTempDirectory = theFile.getAbsolutePath();
134 }
135 } catch (IOException ioe) {
136 logger.warn("We were unable to create a new, empty temporary directory for Terracotta data; we will use the "
137 + "raw temporary directory, '" + System.getProperty("java.io.tmpdir") + "', instead.");
138 uniqueTempDirectory = System.getProperty("java.io.tmpdir");
139 }
140 }
141
142 return uniqueTempDirectory;
143 }
144
145 private static synchronized String getDatestamp() {
146 SimpleDateFormat format = new SimpleDateFormat ("yyyyMMddHHmmssSSS");
147 return format.format(new Date (System.currentTimeMillis()));
148 }
149
150 private static String getHostname() {
151 try {
152 return InetAddress.getLocalHost().getCanonicalHostName();
153 } catch (UnknownHostException uhe) {
154 return "unknown-host";
155 }
156 }
157
158 private static String getIpAddress() {
159 try {
160 return InetAddress.getLocalHost().getHostAddress();
161 } catch (UnknownHostException uhe) {
162 return "unknown-ip-address";
163 }
164 }
165
166 }
167 |
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