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1
22
23
24 package com.mchange.v2.log;
25
26 import java.util.List  ;
27 import java.util.ArrayList ;
28 import com.mchange.v1.util.StringTokenizerUtils;
29 import com.mchange.v2.cfg.MultiPropertiesConfig;
30
31 public abstract class MLog
32 {
33 final static NameTransformer transformer;
34 final static MLog mlog;
35
36 final static MultiPropertiesConfig CONFIG;
37
38 final static MLogger logger;
39
40 static
41 {
42 String [] defaults = new String []
43 {
44 "/com/mchange/v2/log/default-mchange-log.properties",
45 "/mchange-log.properties",
46 "/"
47 };
48 CONFIG = MultiPropertiesConfig.readVmConfig( defaults, null );
49
50 String classnamesStr = CONFIG.getProperty("com.mchange.v2.log.MLog");
51 String [] classnames = null;
52 if (classnamesStr == null)
53 classnamesStr = CONFIG.getProperty("com.mchange.v2.log.mlog");
54 if (classnamesStr != null)
55 classnames = StringTokenizerUtils.tokenizeToArray( classnamesStr, ", \t\r\n" );
56
57 boolean warn = false;
58 MLog tmpml = null;
59 if (classnames != null)
60 tmpml = findByClassnames( classnames );
61 if (tmpml == null)
62 tmpml = findByClassnames( MLogClasses.CLASSNAMES );
63 if (tmpml == null)
64 {
65 warn = true;
66 tmpml = new FallbackMLog();
67 }
68 mlog = tmpml;
69 if (warn)
70 info("Using " + mlog.getClass().getName() + " -- Named logger's not supported, everything goes to System.err.");
71
72 logger = mlog.getLogger( MLog.class );
73 String loggerDesc = mlog.getClass().getName();
74 if ("com.mchange.v2.log.jdk14logging.Jdk14MLog".equals( loggerDesc ))
75 loggerDesc = "java 1.4+ standard";
76 else if ("com.mchange.v2.log.log4j.Log4jMLog".equals( loggerDesc ))
77 loggerDesc = "log4j";
78
79 if (logger.isLoggable( MLevel.INFO ))
80 logger.log( MLevel.INFO, "MLog clients using " + loggerDesc + " logging.");
81
82 NameTransformer tmpt = null;
83 String tClassName = CONFIG.getProperty("com.mchange.v2.log.NameTransformer");
84 if (tClassName == null)
85 tClassName = CONFIG.getProperty("com.mchange.v2.log.nametransformer");
86 try
87 {
88 if (tClassName != null)
89 tmpt = (NameTransformer) Class.forName( tClassName ).newInstance();
90 }
91 catch ( Exception e )
92 {
93 System.err.println("Failed to instantiate com.mchange.v2.log.NameTransformer '" + tClassName + "'!");
94 e.printStackTrace();
95 }
96 transformer = tmpt;
97
98 }
100
101 public static MLog findByClassnames( String [] classnames )
102 {
103 List attempts = null;
104 for (int i = 0, len = classnames.length; i < len; ++i)
105 {
106 try { return (MLog) Class.forName( classnames[i] ).newInstance(); }
107 catch (Exception e)
108 {
109 if (attempts == null)
110 attempts = new ArrayList ();
111 attempts.add( classnames[i] );
112 }
115 }
116 System.err.println("Tried without success to load the following MLog classes:");
117 for (int i = 0, len = attempts.size(); i < len; ++i)
118 System.err.println("\t" + attempts.get(i));
119 return null;
120 }
121
122 public static MLog instance()
123 { return mlog; }
124
125 public static MLogger getLogger(String name)
126 {
127 MLogger out;
128 if ( transformer == null )
129 out = instance().getMLogger( name );
130 else
131 {
132 String xname = transformer.transformName( name );
133 if (xname != null)
134 out = instance().getMLogger( xname );
135 else
136 out = instance().getMLogger( name );
137 }
138 return out;
139 }
140
141 public static MLogger getLogger(Class cl)
142 {
143 MLogger out;
144 if ( transformer == null )
145 out = instance().getMLogger( cl );
146 else
147 {
148 String xname = transformer.transformName( cl );
149 if (xname != null)
150 out = instance().getMLogger( xname );
151 else
152 out = instance().getMLogger( cl );
153 }
154 return out;
155 }
156
157 public static MLogger getLogger()
158 {
159 MLogger out;
160 if ( transformer == null )
161 out = instance().getMLogger();
162 else
163 {
164 String xname = transformer.transformName();
165 if (xname != null)
166 out = instance().getMLogger( xname );
167 else
168 out = instance().getMLogger();
169 }
170 return out;
171 }
172
173 public static void log(MLevel l, String msg)
174 { instance().getLogger().log( l, msg ); }
175
176 public static void log(MLevel l, String msg, Object param)
177 { instance().getLogger().log( l, msg, param ); }
178
179 public static void log(MLevel l,String msg, Object [] params)
180 { instance().getLogger().log( l, msg, params ); }
181
182 public static void log(MLevel l, String msg,Throwable t)
183 { instance().getLogger().log( l, msg, t ); }
184
185 public static void logp(MLevel l, String srcClass, String srcMeth, String msg)
186 { instance().getLogger().logp( l, srcClass, srcMeth, msg ); }
187
188 public static void logp(MLevel l, String srcClass, String srcMeth, String msg, Object param)
189 { instance().getLogger().logp( l, srcClass, srcMeth, msg, param ); }
190
191 public static void logp(MLevel l, String srcClass, String srcMeth, String msg, Object [] params)
192 { instance().getLogger().logp( l, srcClass, srcMeth, msg, params ); }
193
194 public static void logp(MLevel l, String srcClass, String srcMeth, String msg, Throwable t)
195 { instance().getLogger().logp( l, srcClass, srcMeth, msg, t ); }
196
197 public static void logrb(MLevel l, String srcClass, String srcMeth, String rb, String msg)
198 { instance().getLogger().logp( l, srcClass, srcMeth, rb, msg ); }
199
200 public static void logrb(MLevel l, String srcClass, String srcMeth, String rb, String msg, Object param)
201 { instance().getLogger().logrb( l, srcClass, srcMeth, rb, msg, param ); }
202
203 public static void logrb(MLevel l, String srcClass, String srcMeth, String rb, String msg, Object [] params)
204 { instance().getLogger().logrb( l, srcClass, srcMeth, rb, msg, params ); }
205
206 public static void logrb(MLevel l, String srcClass, String srcMeth, String rb, String msg, Throwable t)
207 { instance().getLogger().logrb( l, srcClass, srcMeth, rb, msg, t ); }
208
209 public static void entering(String srcClass, String srcMeth)
210 { instance().getLogger().entering( srcClass, srcMeth ); }
211
212 public static void entering(String srcClass, String srcMeth, Object param)
213 { instance().getLogger().entering( srcClass, srcMeth, param ); }
214
215 public static void entering(String srcClass, String srcMeth, Object params[])
216 { instance().getLogger().entering( srcClass, srcMeth, params ); }
217
218 public static void exiting(String srcClass, String srcMeth)
219 { instance().getLogger().exiting( srcClass, srcMeth ); }
220
221 public static void exiting(String srcClass, String srcMeth, Object result)
222 { instance().getLogger().exiting( srcClass, srcMeth, result ); }
223
224 public static void throwing(String srcClass, String srcMeth, Throwable t)
225 { instance().getLogger().throwing( srcClass, srcMeth, t); }
226
227 public static void severe(String msg)
228 { instance().getLogger().severe( msg ); }
229
230 public static void warning(String msg)
231 { instance().getLogger().warning( msg ); }
232
233 public static void info(String msg)
234 { instance().getLogger().info( msg ); }
235
236 public static void config(String msg)
237 { instance().getLogger().config( msg ); }
238
239 public static void fine(String msg)
240 { instance().getLogger().fine( msg ); }
241
242 public static void finer(String msg)
243 { instance().getLogger().finer( msg ); }
244
245 public static void finest(String msg)
246 { instance().getLogger().finest( msg ); }
247
248 public abstract MLogger getMLogger(String name);
249 public abstract MLogger getMLogger(Class cl);
250 public abstract MLogger getMLogger();
251 } |
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