Source Code Cross Referenced for GenericHandler.java in  » Development » Monolog » org » objectweb » util » monolog » wrapper » javaLog » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Development » Monolog » org.objectweb.util.monolog.wrapper.javaLog 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /**
002:         * Copyright (C) 2001-2003 France Telecom R&D
003:         *
004:         * This library is free software; you can redistribute it and/or
005:         * modify it under the terms of the GNU Lesser General Public
006:         * License as published by the Free Software Foundation; either
007:         * version 2 of the License, or (at your option) any later version.
008:         *
009:         * This library is distributed in the hope that it will be useful,
010:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
011:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
012:         * Lesser General Public License for more details.
013:         *
014:         * You should have received a copy of the GNU Lesser General Public
015:         * License along with this library; if not, write to the Free Software
016:         * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
017:         */package org.objectweb.util.monolog.wrapper.javaLog;
018:
019:        import org.objectweb.util.monolog.api.Handler;
020:        import org.objectweb.util.monolog.api.MonologFactory;
021:        import org.objectweb.util.monolog.api.BasicLevel;
022:        import org.objectweb.util.monolog.wrapper.common.RelatifEnvironmentPathGetter;
023:
024:        import java.io.UnsupportedEncodingException;
025:        import java.util.logging.Filter;
026:        import java.util.logging.Formatter;
027:        import java.util.logging.LogRecord;
028:        import java.util.logging.FileHandler;
029:        import java.util.Map;
030:        import java.util.HashMap;
031:
032:        /**
033:         * Is a generic handler implementation used to wrapper java.util.logging.Handler
034:         * instance.
035:         * @author S.Chassande-Barrioz
036:         */
037:        public class GenericHandler extends java.util.logging.Handler implements 
038:                Handler {
039:
040:            /**
041:             * The real handler
042:             */
043:            public java.util.logging.Handler handler = null;
044:
045:            /**
046:             * the type of the handler (see org.objectweb.util.monolog.api.Handler for
047:             * the possible values)
048:             */
049:            protected String type;
050:
051:            /**
052:             * The name of the handler
053:             */
054:            protected String name;
055:
056:            /**
057:             * Attributes which has been assigned on the handler
058:             */
059:            Map attributes = null;
060:
061:            public GenericHandler() {
062:                attributes = new HashMap();
063:            }
064:
065:            public GenericHandler(String name) {
066:                this ();
067:                this .name = name;
068:            }
069:
070:            /**
071:             * Builds a generic handler with its name and the type. The real handler
072:             * will be instanciated after the configuration step.
073:             * @param name is the name of the handler
074:             * @param type is the type of the handler
075:             */
076:            public GenericHandler(String name, String type) {
077:                this (name);
078:                this .type = type;
079:            }
080:
081:            /**
082:             * builds a generic handler since a real handler.
083:             * @param name is the name of the handler
084:             * @param h is the real handler
085:             */
086:            public GenericHandler(String name, java.util.logging.Handler h) {
087:                this (name);
088:                handler = h;
089:                if (h instanceof  FileHandler) {
090:                    type = "file";
091:                } else if (h instanceof  ConsoleHandler) {
092:                    type = "console";
093:                }
094:            }
095:
096:            /**
097:             * It retrieves the name of the handler
098:             */
099:            public String getName() {
100:                return name;
101:            }
102:
103:            /**
104:             * It assigns the name of the handler
105:             */
106:            public void setName(String name) {
107:                this .name = name;
108:            }
109:
110:            /**
111:             * It retrieves the Handler type
112:             */
113:            public String getType() {
114:                return type;
115:            }
116:
117:            /**
118:             * It retrieves the attributes of the handler
119:             */
120:            public String[] getAttributeNames() {
121:                return (String[]) attributes.keySet().toArray(new String[0]);
122:            }
123:
124:            /**
125:             * It retrieves the value of an attribute value of the handler.
126:             * @param name is an attribute name
127:             */
128:            public Object getAttribute(String n) {
129:                return attributes.get(n);
130:            }
131:
132:            /**
133:             * It assigns an attributte to the handler.
134:             * @param _name is the attribute name
135:             * @param value is the attribute value
136:             * @return the old value is the attribute was already defined
137:             */
138:            public Object setAttribute(String _name, Object value) {
139:                if (!_name.equalsIgnoreCase("activation")) {
140:                    return attributes.put(_name, value);
141:                }
142:                if (type == null) {
143:                    type = (String) attributes.get("handlertype");
144:                }
145:                MonologFactory mf = (MonologFactory) value;
146:                String output = (String) attributes
147:                        .get(Handler.OUTPUT_ATTRIBUTE);
148:                output = RelatifEnvironmentPathGetter.getRealPath(output);
149:                String pattern = (String) attributes
150:                        .get(Handler.PATTERN_ATTRIBUTE);
151:                String level = (String) attributes.get(Handler.LEVEL_ATTRIBUTE);
152:                String append = (String) attributes
153:                        .get(Handler.APPEND_MODE_ATTRIBUTE);
154:                String nbfile = (String) attributes
155:                        .get(Handler.FILE_NUMBER_ATTRIBUTE);
156:                String fileSize = (String) attributes
157:                        .get(Handler.MAX_SIZE_ATTRIBUTE);
158:                boolean appendVal = true;
159:                if (append != null && append.length() > 0) {
160:                    appendVal = Boolean.getBoolean(append);
161:                }
162:                int levelVal = BasicLevel.DEBUG;
163:                if (level != null && level.length() > 0) {
164:                    levelVal = org.objectweb.util.monolog.wrapper.common.LevelImpl
165:                            .evaluate(level, mf);
166:                }
167:                if ("console".equalsIgnoreCase(type)) {
168:                    handler = new ConsoleHandler();
169:                    if (output != null && output.length() > 0) {
170:                        if (output.equalsIgnoreCase("System.err")) {
171:                            ((ConsoleHandler) handler).setOutput(System.err);
172:                        } else if (output.equalsIgnoreCase("switch")) {
173:                            ((ConsoleHandler) handler).activateSwitching();
174:                        } else if (output.equalsIgnoreCase("System.out")) {
175:                            ((ConsoleHandler) handler).setOutput(System.out);
176:                        }
177:                    }
178:                } else if ("file".equalsIgnoreCase(type)
179:                        || "rollingfile".equalsIgnoreCase(type)) {
180:                    int limit = 0;
181:                    if (fileSize != null && fileSize.length() > 0) {
182:                        limit = Integer.parseInt(fileSize);
183:                    }
184:                    int count = 1;
185:                    if (nbfile != null && nbfile.length() > 0) {
186:                        count = Integer.parseInt(nbfile);
187:                    }
188:                    try {
189:                        handler = new FileHandler(output, limit, count,
190:                                appendVal);
191:                    } catch (Exception e) {
192:                        throw new IllegalStateException(
193:                                "Error when building the handler '" + name
194:                                        + "': " + e.getMessage());
195:                    }
196:                } else {
197:                    throw new IllegalStateException(
198:                            "Error when building the handler '" + name
199:                                    + "': unknwon type: " + type);
200:                }
201:                handler.setFormatter(new MonologFormatter(pattern));
202:                handler.setLevel(LevelImpl.int2Level(levelVal));
203:                return null;
204:            }
205:
206:            // OVERRIDE THE java.util.logging.Handler CLASS //
207:            //----------------------------------------------//
208:
209:            /**
210:             * Close the Handler and free all associated resources.
211:             */
212:            public void close() {
213:                handler.close();
214:            }
215:
216:            /**
217:             * Flush any buffered output.
218:             */
219:            public void flush() {
220:                handler.flush();
221:            }
222:
223:            /**
224:             * Return the character encoding for this Handler.
225:             */
226:            public String getEncoding() {
227:                return handler.getEncoding();
228:            }
229:
230:            /**
231:             * Get the current Filter for this Handler.
232:             */
233:            public Filter getFilter() {
234:                return handler.getFilter();
235:            }
236:
237:            /**
238:             * Return the Formatter for this Handler.
239:             */
240:            public Formatter getFormatter() {
241:                return handler.getFormatter();
242:            }
243:
244:            /**
245:             * Get the log level specifying which messages will be logged by this Handler.
246:             */
247:            public java.util.logging.Level getLevel() {
248:                System.out.println("handler(" + name + ").getLevel(): "
249:                        + handler.getLevel().getName());
250:                return handler.getLevel();
251:            }
252:
253:            /**
254:             * Check if this Handler would actually log a given LogRecord.
255:             */
256:            public boolean isLoggable(LogRecord record) {
257:                //System.out.println("handler("+ name + ").isLoggable(" + record.getLevel().getName() + "): " + handler.isLoggable(record));
258:                return handler.isLoggable(record);
259:            }
260:
261:            /**
262:             * Publish a LogRecord.
263:             */
264:            public void publish(LogRecord record) {
265:                //System.out.println("handler("+ name + ").publish(" + record.getLevel().getName() + "): " + handler.isLoggable(record));
266:                handler.publish(record);
267:            }
268:
269:            /**
270:             * Set the character encoding used by this Handler.
271:             */
272:            public void setEncoding(String encoding) throws SecurityException,
273:                    UnsupportedEncodingException {
274:                handler.setEncoding(encoding);
275:            }
276:
277:            /**
278:             * Set the most recent IO exception.
279:             */
280:            protected void setException(Exception exception) {
281:            }
282:
283:            /**
284:             * Set a Filter to control output on this Handler.
285:             */
286:            public void setFilter(Filter newFilter) {
287:                handler.setFilter(newFilter);
288:            }
289:
290:            /**
291:             * Set a Formatter.
292:             */
293:            public void setFormatter(Formatter newFormatter) {
294:                handler.setFormatter(newFormatter);
295:            }
296:
297:            /**
298:             * Set the log level specifying which message levels will
299:             * be logged by this Handler.
300:             */
301:            public void setLevel(java.util.logging.Level newLevel) {
302:                handler.setLevel(newLevel);
303:            }
304:
305:        }
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