Module io.helidon.logging.jul

Package io.helidon.logging.jul

Class HelidonJsonFormatter

java.lang.Object

java.util.logging.Formatter

io.helidon.logging.jul.HelidonJsonFormatter

public class HelidonJsonFormatter
extends Formatter

A Formatter that stores each log record as a single-line JSON value. It also replaces all occurrences of MDC tags like %X{value} with specific values, and supports replacement of "!thread!" with the current thread.

The configuration should be done through property "io.helidon.logging.jul.HelidonJsonFormatter.fields", that provides comma separated list of name to fields to log (references are the same as you would use in a SimpleFormatter).

The configuration falls back to property "java.util.logging.SimpleFormatter.format", and analyzes it to provide a "guessed" JSON structure.

Example (and also the default format):
"ts:%1$tQ,date:%1$tY.%1$tm.%1$td,time:%1$tH:%1$tM:%1$tS.%1$tL,level:%4$s,message:%5$s,exception:%6$s,thread:!thread!,logger:%3$s"

Constructor Summary

Constructors

Constructor	Description
HelidonJsonFormatter()	Create new instance of the HelidonJsonFormatter.

Method Summary

Modifier and Type	Method	Description
String	format(LogRecord record)

Methods inherited from class java.util.logging.Formatter

formatMessage, getHead, getTail

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

HelidonJsonFormatter

public HelidonJsonFormatter()

Create new instance of the HelidonJsonFormatter.

Method Details

format

public String format(LogRecord record)

Specified by:

format in class Formatter