Package com.jcabi.log

Class MulticolorLayout

  • All Implemented Interfaces:
    OptionHandler
    public final class MulticolorLayout
extends EnhancedPatternLayout
    Multi-color layout for LOG4J.

    Use it in your LOG4J configuration: 

     log4j.rootLogger=INFO, CONSOLE
 log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
 log4j.appender.CONSOLE.layout=com.jcabi.log.MulticolorLayout
 log4j.appender.CONSOLE.layout.ConversionPattern=[%color{%-5p}] %c: %m%n

    The part of the message wrapped with %color{...} will change its color according to the logging level of the event. Without this highlighting the behavior of the layout is identical to EnhancedPatternLayout. You can use %color-red{...} if you want to use specifically red color for the wrapped piece of text. Supported colors are: red, blue, yellow, cyan, black, and white.

    Besides that you can specify any ANSI color you like with %color-<attr>;<bg>;<fg>{...}, where <attr> is a binary mask of attributes, <bg> is a background color, and <fg> is a foreground color. Read more about ANSI escape code.

    This class or its parents are not serializable.

    Maven dependency for this class is (see How to use with Maven instructions): 

    <dependency>
  <groupId>com.jcabi</groupId>
  <artifactId>jcabi-log</artifactId>
 </dependency>
    Since:
    0.1.10
    See Also:
    ANSI escape code, PatternLayout from LOG4J, How to use with Maven

    • Constructor Detail

      • MulticolorLayout

        public MulticolorLayout()

    • Method Detail

      • setColors

        public void setColors​(String cols)
        Allow to overwrite or specify new ANSI color names in a javascript map like format.
        Parameters:
        cols - JavaScript like map of color names
        Since:
        0.9

      • setLevels

        public void setLevels​(String lev)
        Allow to overwrite the ANSI color values for the log levels in a javascript map like format.
        Parameters:
        lev - JavaScript like map of levels
        Since:
        0.9