关于log4j日志扩展---自定义PatternLayout

log4j.rootLogger=debug, stdout, R
 
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
 
# Pattern to output the caller's file name and line number.
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] (%F:%L) - %m%n
log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=example.log
log4j.appender.R.MaxFileSize=100KB
# Keep one backup file
log4j.appender.R.MaxBackupIndex=1
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n

log4j.appender.stdout=org.apache.log4j.ConsoleAppender 
log4j.appender.R.layout=org.apache.log4j.PatternLayout

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
package examples; 
import org.apache.log4j.*;
import org.apache.log4j.helpers.PatternParser;
 
/**
  Example showing how to extend PatternLayout to recognize additional
  conversion characters.  
  
  <p>In this case MyPatternLayout recognizes %# conversion pattern. It
  outputs the value of an internal counter which is also incremented
  at each call.
  <p>See <a href=doc-files/MyPatternLayout.java><b>source</b></a> code
  for more details.
  @see MyPatternParser
  @see org.apache.log4j.PatternLayout
  @author Anders Kristensen 
*/
public class MyPatternLayout extends PatternLayout {
  public
  MyPatternLayout() {
    this(DEFAULT_CONVERSION_PATTERN);
  }
 
  public
  MyPatternLayout(String pattern) {
    super(pattern);
  }
    
  public
  PatternParser createPatternParser(String pattern) {
    return new MyPatternParser(
      pattern == null ? DEFAULT_CONVERSION_PATTERN : pattern);
  }
  
  public
  static void main(String[] args) {
    Layout layout = new MyPatternLayout("[counter=%.10#] - %m%n");
    Logger logger = Logger.getLogger("some.cat");
    logger.addAppender(new ConsoleAppender(layout, ConsoleAppender.SYSTEM_OUT));
    logger.debug("Hello, log");
    logger.info("Hello again...");    
  }
}

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
package examples; 
import org.apache.log4j.helpers.FormattingInfo;
import org.apache.log4j.helpers.PatternConverter;
import org.apache.log4j.helpers.PatternParser;
import org.apache.log4j.spi.LoggingEvent;
 
/**
  Example showing how to extend PatternParser to recognize additional
  conversion characters.  The examples shows that minimum and maximum
  width and alignment settings apply for "extension" conversion
  characters just as they do for PatternLayout recognized characters.
  
  <p>In this case MyPatternParser recognizes %# and outputs the value
  of an internal counter which is also incremented at each call.
  See <a href=doc-files/MyPatternParser.java><b>source</b></a> code
   for more details.
  
  @see org.apache.log4j.examples.MyPatternLayout
  @see org.apache.log4j.helpers.PatternParser
  @see org.apache.log4j.PatternLayout
  @author Anders Kristensen 
*/
public class MyPatternParser extends PatternParser { 
  int counter = 0; 
  public
  MyPatternParser(String pattern) {
    super(pattern);
  }
    
  public
  void finalizeConverter(char c) {
    if (c == '#') {
      addConverter(new UserDirPatternConverter(formattingInfo));
      currentLiteral.setLength(0);
    } else {
      super.finalizeConverter(c);
    }
  }
  
  private class UserDirPatternConverter extends PatternConverter {
    UserDirPatternConverter(FormattingInfo formattingInfo) {
      super(formattingInfo);
    }
 
    public
    String convert(LoggingEvent event) {
      return String.valueOf(++counter);
    }
  }  
}

 public
  void finalizeConverter(char c) {
    if (c == '#') {
      addConverter(new UserDirPatternConverter(formattingInfo));
      currentLiteral.setLength(0);
    } else {
      super.finalizeConverter(c);
    }
  }

%#{MMMM}

log4j.appender.R.layout.ConversionPattern= %#{orgId}  %p %t %c - %m%n

if (c == '#') {
            String exs = super.extractOption();  //获取orgId
            addConverter(new ExrPatternConverter(formattingInfo, exs));
            currentLiteral.setLength(0); 
        } else {
            super.finalizeConverter(c);
        }

package com.yogapay.core; 
import java.util.HashMap;
import java.util.Map; 
import org.apache.log4j.helpers.FormattingInfo;
import org.apache.log4j.helpers.PatternConverter;
import org.apache.log4j.helpers.PatternParser;
import org.apache.log4j.spi.LoggingEvent; 
public class ExPatternParser extends PatternParser {
 
 static final ThreadLocal<Map<String, Object>> TH_LOCAL = new ThreadLocal<Map<String, Object>>(){
  @Override
        protected HashMap<String, Object> initialValue() {
            return new HashMap<String, Object>();
        } 
 };
 
 public static void setCurrentValue(String key, Object value) {
  Map<String, Object> map = TH_LOCAL.get();
  map.put(key, value);  
 }
 
 public ExPatternParser(String pattern) {
  super(pattern);
 }
 
 public void finalizeConverter(char c) {
  if (c == '#') {
   String exs = super.extractOption();
   addConverter(new ExrPatternConverter(formattingInfo, exs));
   currentLiteral.setLength(0); 
  } else {
   super.finalizeConverter(c);
  }
 }
 
 private class ExrPatternConverter extends PatternConverter { 
  private String cfg; 
  ExrPatternConverter(FormattingInfo formattingInfo, String cfg) {
   super(formattingInfo);
   this.cfg = cfg;
  }
 
  public String convert(LoggingEvent event) {
   Map<String, Object> valueMap = TH_LOCAL.get();
   if (valueMap != null) {
    Object value = valueMap.get(cfg);
    if (value != null) {
     return String.valueOf(value);
    }
   }
   return "";
  }
 }
}

package com.yogapay.core; 
import org.apache.log4j.*;
import org.apache.log4j.helpers.PatternParser; 
public class ExPatternLayout extends PatternLayout {
 public ExPatternLayout() {
  this(DEFAULT_CONVERSION_PATTERN);
 }
 
 public ExPatternLayout(String pattern) {
  super(pattern);
 } 
        @Override
 public PatternParser createPatternParser(String pattern) {
  return new ExPatternParser(pattern == null ? DEFAULT_CONVERSION_PATTERN : pattern);
 }
}

### set log levels ###
log4j.rootLogger = info,stdout
 
### 输出到控制台 ###
log4j.appender.stdout = org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target = System.out
log4j.appender.stdout.layout = com.yogapay.core.ExPatternLayout
log4j.appender.stdout.layout.ConversionPattern = lgcNo:%#{orgId} %d{yyyy-MM-dd HH:mm:ss} [%t] %p [%c] - %m%n

import org.apache.log4j.spi.LoggingEvent; 
import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
 
/**
 * @author 墨盒
 */
public class EveryDayRollingFileAppender extends FileAppender { 
    private SimpleDateFormat format;
    private String fileName; 
    private Level level; 
    private static final String SEPERTOR = "-";
    private String regex = "\{([^\{\}]+)\}";// 
    private long next; 
    private Date now; 
    public Level getLevel() {
        return level;
    }
 
    public void setLevel(Level level) {
        this.level = level;
    }
 
    public EveryDayRollingFileAppender() {
        now = new Date();
        level = Level.WARN;
    }
 
 
    public String getFileName() {
        return fileName;
    }
 
    public void setFileName(String fileName) {
        this.fileName = fileName;
    }
 
    //TODO 18-6-16 该方法被调用了两次
    @Override
    public void activateOptions() {
        Pattern pattern = Pattern.compile(regex);  
        Matcher matcher = pattern.matcher(fileName);
        StringBuilder builder = new StringBuilder();
        while (matcher.find()) {
            String temp = matcher.group(1); 
            builder.append(temp).append(SEPERTOR);
 
        }
        if (builder.length() != 0) {
            format = new SimpleDateFormat(builder.deleteCharAt(builder.length() - 1).toString());
            changeFile();
            setNextTime();日志采集小工具
        } else {
            format = null;
            try {
                setFile(fileName, getAppend(), getBufferedIO(), getBufferSize());
            } catch (IOException e) {
                e.printStackTrace();
            }
        }  
    }
 
    private void changeFile() {
        if (format != null) {
            try {
                setFile(createFile(), getAppend(), getBufferedIO(), getBufferSize());
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
 
    protected void setNextTime() {
        Calendar c = Calendar.getInstance();
        c.setTime(now);
        c.add(Calendar.DAY_OF_YEAR, 1);
        c.set(Calendar.MINUTE, 0);
        c.set(Calendar.HOUR, 0);
        c.set(Calendar.SECOND, 0);
        c.set(Calendar.MILLISECOND, 0);
        next = c.getTimeInMillis(); 
        System.out.println(new Date(next));
    } 
 
    @Override
    protected void subAppend(LoggingEvent event) {
        if (event.getLevel().syslogEquivalent <= level.syslogEquivalent) {
            long n = System.currentTimeMillis();
            if (n >= next) {
                now.setTime(n); 
                changeFile(); 
                setNextTime();  
            }
            super.subAppend(event);
        }
    }
 
    public String createFile() {
        String file = format.format(now); 
        String s[] = file.split(SEPERTOR); 
        String temp = fileName;
        for (int i = 0; i < s.length; i++) {
            temp = temp.replaceFirst(regex, s[i]);
        } 
 
        File f = new File(temp);
        if (!f.getParentFile().exists())
            f.getParentFile().mkdirs();
        else if (f.exists())
            f.delete(); 
        return f.getAbsolutePath(); 
    }
}

log4j.appender.logfile=org.apache.log4j.EveryDayRollingFileAppender
# 需要写入的日志级别
log4j.appender.logfile.level=INFO
# 日志路径
log4j.appender.logfile.fileName=/home/inkbox/log/log/{yyyy}/{MM}/{dd}_logSocket.log
log4j.appender.logfile.layout=org.apache.log4j.PatternLayout
log4j.appender.logfile.layout.ConversionPattern=%m%n