|
1
8 package org.apache.avalon.excalibur.logger.factory;
9
10 import org.apache.avalon.excalibur.logger.LogTargetFactory;
11
12 import org.apache.avalon.framework.configuration.Configuration;
13 import org.apache.avalon.framework.configuration.Configurable;
14 import org.apache.avalon.framework.configuration.ConfigurationException;
15 import org.apache.avalon.framework.context.Contextualizable;
16 import org.apache.avalon.framework.context.Context;
17 import org.apache.avalon.framework.context.ContextException;
18
19 import org.apache.log.LogTarget;
20 import org.apache.log.format.ExtendedPatternFormatter;
21 import org.apache.log.format.Formatter;
22 import org.apache.log.format.PatternFormatter;
23 import org.apache.log.format.RawFormatter;
24 import org.apache.log.output.io.FileTarget;
25 import org.apache.log.output.io.rotate.RotatingFileTarget;
26 import org.apache.log.output.io.rotate.RotateStrategy;
27 import org.apache.log.output.io.rotate.OrRotateStrategy;
28 import org.apache.log.output.io.rotate.RotateStrategyBySize;
29 import org.apache.log.output.io.rotate.RotateStrategyByTime;
30 import org.apache.log.output.io.rotate.FileStrategy;
31 import org.apache.log.output.io.rotate.RevolvingFileStrategy;
32 import org.apache.log.output.io.rotate.UniqueFileStrategy;
33
34 import java.io.File  ;
35 import java.io.IOException ;
36 import java.util.StringTokenizer ;
37
38
117 public class FileTargetFactory
118 extends AbstractTargetFactory
119 {
120
121
124 public final LogTarget createTarget( final Configuration configuration )
125 throws ConfigurationException
126 {
127 final Configuration conf_filename = configuration.getChild( "filename" );
128 final String filename = getFilename( conf_filename.getValue() );
129
130 final Configuration conf_rotation = configuration.getChild( "rotation", false );
131
132 final Configuration conf_format = configuration.getChild( "format" );
133
134 final Configuration conf_append = configuration.getChild( "append" );
135 final boolean append = conf_append.getValueAsBoolean( false );
136
137 final LogTarget logtarget;
138
139 final File file = new File ( filename );
140 final Formatter formatter = getFormatter( conf_format );
141
142 try
143 {
144 if( null == conf_rotation )
145 {
146 logtarget = new FileTarget( file, append, formatter );
147 }
148 else
149 {
150 final Configuration conf_strategy = conf_rotation.getChildren()[0];
151 final RotateStrategy rotateStrategy = getRotateStrategy( conf_strategy );
152 final FileStrategy fileStrategy = getFileStrategy( conf_rotation, file );
153
154 logtarget =
155 new RotatingFileTarget( formatter, rotateStrategy, fileStrategy );
156 }
157 }
158 catch( final IOException ioe )
159 {
160 throw new ConfigurationException( "cannot create FileTarget", ioe );
161 }
162
163 return logtarget;
164 }
165
166 private final static long SECOND = 1000;
167 private final static long MINUTE = 60*SECOND;
168 private final static long HOUR = 60*MINUTE;
169 private final static long DAY = 24*HOUR;
170
171 private final static long KILOBYTE = 1000;
172 private final static long MEGABYTE = 1000*KILOBYTE;
173
174 private RotateStrategy getRotateStrategy( final Configuration conf )
175 {
176 final String type = conf.getName();
177
178 if( "or".equals( type ) )
179 {
180 final Configuration[] configurations = conf.getChildren();
181 final int size = configurations.length;
182
183 final RotateStrategy[] strategies = new RotateStrategy[size];
184 for( int i = 0; i < size; i++ )
185 {
186 strategies[i] = getRotateStrategy( configurations[i] );
187 }
188
189 return new OrRotateStrategy( strategies );
190 }
191
192 if( "size".equals( type ) )
193 {
194 final String value = conf.getValue( "2m" );
195
196 final int count = value.length();
197 final char end = value.charAt( count-1 );
198 final long no;
199 final long size;
200
201 switch( end )
202 {
203 case 'm':no = Long.parseLong( value.substring( 0, count-1 ) );
204 size = no * MEGABYTE;
205 break;
206 case 'k':no = Long.parseLong( value.substring( 0, count-1 ) );
207 size = no * KILOBYTE;
208 break;
209 default: size = Long.parseLong( value );
210 }
211
212 return new RotateStrategyBySize( size );
213 }
214
215 final String value = conf.getValue( "24:00:00" );
217
218 final StringTokenizer tokenizer = new StringTokenizer ( value, ":" );
220 final int count = tokenizer.countTokens();
221 long time = 0;
222 for( int i = count; i > 0; i-- )
223 {
224 final long no = Long.parseLong( tokenizer.nextToken() );
225 if( 4 == i )
226 {
227 time += no * DAY;
228 }
229 if( 3 == i )
230 {
231 time += no * HOUR;
232 }
233 if( 2 == i )
234 {
235 time += no * MINUTE;
236 }
237 if( 1 == i )
238 {
239 time += no * SECOND;
240 }
241 }
242
243 return new RotateStrategyByTime( time );
244 }
245
246 protected FileStrategy getFileStrategy( final Configuration conf, final File file )
247 {
248 final String type = conf.getAttribute( "type", "unique" );
249
250 if( "revolving".equals( type ) )
251 {
252 final int initialRotation =
253 conf.getAttributeAsInteger( "init", 5 );
254 final int maxRotation =
255 conf.getAttributeAsInteger( "max", 10 );
256
257 return new RevolvingFileStrategy( file, initialRotation, maxRotation );
258 }
259
260 final String pattern = conf.getAttribute( "pattern", null );
262 final String suffix = conf.getAttribute( "suffix", null );
263 if( pattern == null)
264 {
265 return new UniqueFileStrategy( file );
266 }
267 else
268 {
269 if( suffix == null )
270 {
271 return new UniqueFileStrategy( file, pattern );
272 }
273 else
274 {
275 return new UniqueFileStrategy( file, pattern, suffix );
276 }
277 }
278 }
279
280 protected Formatter getFormatter( final Configuration conf )
281 {
282 Formatter formatter = null;
283
284 if ( null != conf )
285 {
286 final FormatterFactory formatterFactory = new FormatterFactory();
287 formatter = formatterFactory.createFormatter( conf );
288 }
289
290 return formatter;
291 }
292
293
305 protected final String getFilename( String rawFilename )
306 throws ConfigurationException
307 {
308 StringBuffer sb = new StringBuffer ();
309 int i = 0;
310 int j = -1;
311 while( ( j = rawFilename.indexOf( "${", i ) ) > -1 )
312 {
313 if( i < j )
314 {
315 sb.append( rawFilename.substring( i, j ) );
316 }
317 int k = rawFilename.indexOf( '}', j );
318 final String ctx_name = rawFilename.substring( j + 2, k );
319 final Object ctx;
320 try
321 {
322 ctx = m_context.get( ctx_name );
323 }
324 catch( final ContextException ce )
325 {
326 throw new ConfigurationException( "missing entry '" + ctx_name + "' in Context" );
327 }
328 sb.append( ctx.toString() );
329 i = k + 1;
330 }
331 if( i < rawFilename.length() )
332 {
333 sb.append( rawFilename.substring( i, rawFilename.length() ) );
334 }
335 return sb.toString();
336 }
337 }
338
339 |
Popular Tags |
Java API By Example, From Geeks To Geeks.