WildFly Logging Subsystem Configuration

Internal

• WildFly Logging Subsystem

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• EAP 6.4

Overview

<subsystem xmlns="urn:jboss:domain:logging:1.5">

    <periodic-rotating-file-handler name="FILE" autoflush="true">
        <formatter>
            <named-formatter name="PATTERN"/>
        </formatter>
        <file relative-to="jboss.server.log.dir" path="server.log"/>
        <suffix value=".yyyy-MM-dd"/>
        <append value="true"/>
    </periodic-rotating-file-handler>

    <logger category="com.arjuna">
        <level name="WARN"/>
    </logger>
    <logger category="org.apache.tomcat.util.modeler">
        <level name="WARN"/>
    </logger>
    <logger category="org.jboss.as.config">
        <level name="DEBUG"/>
    </logger>
    <logger category="sun.rmi">
        <level name="WARN"/>
    </logger>
    <logger category="jacorb">
        <level name="WARN"/>
    </logger>
    <logger category="jacorb.config">
        <level name="ERROR"/>
     </logger>
     <root-logger>
         <level name="INFO"/>
         <handlers>
            <handler name="FILE"/>
         </handlers>
      </root-logger>
      <formatter name="PATTERN">
         <pattern-formatter pattern="%d{HH:mm:ss,SSS} %-5p [%c] (%t) %s%E%n"/>
      </formatter>
</subsystem>

Periodic Rotating File Handler Configuration

The rotation period is inferred based on the "suffix" value. The "suffix" is a string that can be parsed with java.text.SimpleDateFormat .

    * Set the suffix string.  The string is in a format which can be understood by {@link java.text.SimpleDateFormat}.
    * The period of the rotation is automatically calculated based on the suffix.
    *
    * @param suffix the suffix
    * @throws IllegalArgumentException if the suffix is not valid
    */
   public void setSuffix(String suffix) throws IllegalArgumentException {
       final SimpleDateFormat format = new SimpleDateFormat(suffix);
       format.setTimeZone(timeZone);
       final int len = suffix.length();
       Period period = Period.NEVER;
       for (int i = 0; i < len; i ++) {
           switch (suffix.charAt(i)) {
               case 'y': period = min(period, Period.YEAR); break;
               case 'M': period = min(period, Period.MONTH); break;
               case 'w':
               case 'W': period = min(period, Period.WEEK); break;
               case 'D':
               case 'd':
               case 'F':
               case 'E': period = min(period, Period.DAY); break;
               case 'a': period = min(period, Period.HALF_DAY); break;
               case 'H':
               case 'k':
               case 'K':
               case 'h': period = min(period, Period.HOUR); break;
               case 'm': period = min(period, Period.MINUTE); break;
               case '\: while (suffix.charAt(++i) != '\); break;
               case 's':
               case 'S': throw new IllegalArgumentException("Rotating by second or millisecond is not supported");
           }
       }
       synchronized (outputLock) {
           this.format = format;
           this.period = period;
           final long now;
           final File file = getFile();
           if (file != null && file.lastModified() > 0) {
               now = file.lastModified();
           } else {
               now = System.currentTimeMillis();
           }
           calcNextRollover(now);
       }
   }

<periodic-rotating-file-handler name="TEST" autoflush="true">
    <level name="ALL"/>
    <file relative-to="jboss.server.log.dir" path="test.log"/>
    <suffix value=".yyyy-MM-dd"/>
    <append value="true"/>
</periodic-rotating-file-handler>