Package org.apache.logging.log4j.core.pattern

Class MdcPatternConverter

java.lang.Object

org.apache.logging.log4j.core.pattern.AbstractPatternConverter

org.apache.logging.log4j.core.pattern.LogEventPatternConverter

org.apache.logging.log4j.core.pattern.MdcPatternConverter

All Implemented Interfaces:

PatternConverter

@Plugin(name="MdcPatternConverter",
        category="Converter")
public final class MdcPatternConverter
extends LogEventPatternConverter

Able to handle the contents of the LogEvent's MDC and either output the entire contents of the properties in a similar format to the java.util.Hashtable.toString(), or to output the value of a specific key within the property bundle when this pattern converter has the option set.

Field Summary

Fields

Modifier and Type	Field	Description
private boolean	full
private java.lang.String	key	Name of property to output.
private java.lang.String[]	keys
private static TriConsumer<java.lang.String,java.lang.Object,java.lang.StringBuilder>	WRITE_KEY_VALUES_INTO

Fields inherited from class org.apache.logging.log4j.core.pattern.AbstractPatternConverter

LOGGER

Fields inherited from interface org.apache.logging.log4j.core.pattern.PatternConverter

CATEGORY

Constructor Summary

Constructors

Modifier	Constructor	Description
private	MdcPatternConverter(java.lang.String[] options)	Private constructor.

Method Summary

Modifier and Type	Method	Description
private static void	appendFully(ReadOnlyStringMap contextData, java.lang.StringBuilder toAppendTo)
private static void	appendSelectedKeys(java.lang.String[] keys, ReadOnlyStringMap contextData, java.lang.StringBuilder sb)
void	format(LogEvent event, java.lang.StringBuilder toAppendTo)	Formats an event into a string buffer.
static MdcPatternConverter	newInstance(java.lang.String[] options)	Obtains an instance of PropertiesPatternConverter.

Methods inherited from class org.apache.logging.log4j.core.pattern.LogEventPatternConverter

format, handlesThrowable, isVariable

Methods inherited from class org.apache.logging.log4j.core.pattern.AbstractPatternConverter

getName, getStyleClass

Methods inherited from class java.lang.Object

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

Field Detail

key

private final java.lang.String key

Name of property to output.

keys

private final java.lang.String[] keys

full

private final boolean full

WRITE_KEY_VALUES_INTO

private static final TriConsumer<java.lang.String,java.lang.Object,java.lang.StringBuilder> WRITE_KEY_VALUES_INTO

Constructor Detail

MdcPatternConverter

private MdcPatternConverter(java.lang.String[] options)

Private constructor.

Parameters:

options - options, may be null.

Method Detail

newInstance

public static MdcPatternConverter newInstance(java.lang.String[] options)

Obtains an instance of PropertiesPatternConverter.

Parameters:

options - options, may be null or first element contains name of property to format.

Returns:

instance of PropertiesPatternConverter.

format

public void format(LogEvent event,
                   java.lang.StringBuilder toAppendTo)

Formats an event into a string buffer.

Specified by:

format in class LogEventPatternConverter

Parameters:

event - event to format, may not be null.

toAppendTo - string buffer to which the formatted event will be appended. May not be null.

appendFully

private static void appendFully(ReadOnlyStringMap contextData,
                                java.lang.StringBuilder toAppendTo)

appendSelectedKeys

private static void appendSelectedKeys(java.lang.String[] keys,
                                       ReadOnlyStringMap contextData,
                                       java.lang.StringBuilder sb)