001
014
015 package com.liferay.portal.kernel.util;
016
017 import java.io.InputStream;
018
019 import java.net.URL;
020
021 import java.util.Enumeration;
022 import java.util.Map;
023 import java.util.Properties;
024 import java.util.concurrent.ConcurrentHashMap;
025
026
031 public class SystemProperties {
032
033 public static final String SYSTEM_PROPERTIES_FINAL =
034 "system.properties.final";
035
036 public static final String SYSTEM_PROPERTIES_LOAD =
037 "system.properties.load";
038
039 public static final String SYSTEM_PROPERTIES_QUIET =
040 "system.properties.quiet";
041
042 public static final String TMP_DIR = "java.io.tmpdir";
043
044 public static String get(String key) {
045 String value = _properties.get(key);
046
047 if (value == null) {
048 value = System.getProperty(key);
049 }
050
051 return value;
052 }
053
054 public static String[] getArray(String key) {
055 String value = get(key);
056
057 if (value == null) {
058 return new String[0];
059 }
060 else {
061 return StringUtil.split(value);
062 }
063 }
064
065 public static Properties getProperties() {
066 return PropertiesUtil.fromMap(_properties);
067 }
068
069 public static void reload() {
070 if (_loaded) {
071 return;
072 }
073
074 Properties properties = new Properties();
075
076 Thread currentThread = Thread.currentThread();
077
078 ClassLoader classLoader = currentThread.getContextClassLoader();
079
080 boolean systemPropertiesQuiet = GetterUtil.getBoolean(
081 System.getProperty(SYSTEM_PROPERTIES_QUIET));
082
083
084
085 try {
086 URL url = classLoader.getResource("system.properties");
087
088 if (url != null) {
089 InputStream inputStream = url.openStream();
090
091 properties.load(inputStream);
092
093 inputStream.close();
094
095 if (!systemPropertiesQuiet) {
096 System.out.println("Loading " + url);
097 }
098 }
099 }
100 catch (Exception e) {
101 e.printStackTrace();
102 }
103
104
105
106 try {
107 URL url = classLoader.getResource("system-ext.properties");
108
109 if (url != null) {
110 _loaded = true;
111
112 InputStream inputStream = url.openStream();
113
114 properties.load(inputStream);
115
116 inputStream.close();
117
118 if (!systemPropertiesQuiet) {
119 System.out.println("Loading " + url);
120 }
121 }
122 }
123 catch (Exception e) {
124 e.printStackTrace();
125 }
126
127
128
129 SystemEnv.setProperties(properties);
130
131
132
133 boolean systemPropertiesLoad = GetterUtil.getBoolean(
134 System.getProperty(SYSTEM_PROPERTIES_LOAD), true);
135
136 boolean systemPropertiesFinal = GetterUtil.getBoolean(
137 System.getProperty(SYSTEM_PROPERTIES_FINAL), true);
138
139 if (systemPropertiesLoad) {
140 Enumeration<String> enu =
141 (Enumeration<String>)properties.propertyNames();
142
143 while (enu.hasMoreElements()) {
144 String key = enu.nextElement();
145
146 if (systemPropertiesFinal ||
147 Validator.isNull(System.getProperty(key))) {
148
149 System.setProperty(key, properties.getProperty(key));
150 }
151 }
152 }
153
154 _properties = new ConcurrentHashMap<String, String>();
155
156
157
158
159 PropertiesUtil.fromProperties(properties, _properties);
160 }
161
162 public static void set(String key, String value) {
163 System.setProperty(key, value);
164
165 _properties.put(key, value);
166 }
167
168 private static boolean _loaded;
169 private static Map<String, String> _properties;
170
171 static {
172 reload();
173 }
174
175 }