Package org.apache.logging.log4j.core.filter

Class RegexFilter

java.lang.Object

org.apache.logging.log4j.core.AbstractLifeCycle

org.apache.logging.log4j.core.filter.AbstractFilter

org.apache.logging.log4j.core.filter.RegexFilter

All Implemented Interfaces:

Filter, LifeCycle, LifeCycle2

@Plugin(name="RegexFilter",
        category="Core",
        elementType="filter",
        printObject=true)
public final class RegexFilter
extends AbstractFilter

A filter that matches the given regular expression pattern against messages.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.logging.log4j.core.filter.AbstractFilter

AbstractFilter.AbstractFilterBuilder<B extends AbstractFilter.AbstractFilterBuilder<B>>

Nested classes/interfaces inherited from interface org.apache.logging.log4j.core.Filter

Filter.Result

Nested classes/interfaces inherited from interface org.apache.logging.log4j.core.LifeCycle

LifeCycle.State

Field Summary

Fields inherited from class org.apache.logging.log4j.core.filter.AbstractFilter

onMatch, onMismatch

Fields inherited from class org.apache.logging.log4j.core.AbstractLifeCycle

DEFAULT_STOP_TIMEOUT, DEFAULT_STOP_TIMEUNIT, LOGGER

Fields inherited from interface org.apache.logging.log4j.core.Filter

ELEMENT_TYPE, EMPTY_ARRAY

Method Summary

Modifier and Type	Method	Description
static RegexFilter	createFilter(String regex, String[] patternFlags, Boolean useRawMsg, Filter.Result match, Filter.Result mismatch)	Creates a Filter that matches a regular expression.
Filter.Result	filter(LogEvent event)	Context Filter method.
Filter.Result	filter(Logger logger, Level level, Marker marker, Object msg, Throwable t)	Appender Filter method.
Filter.Result	filter(Logger logger, Level level, Marker marker, String msg, Object... params)	Appender Filter method.
Filter.Result	filter(Logger logger, Level level, Marker marker, Message msg, Throwable t)	Appender Filter method.
String	toString()

Methods inherited from class org.apache.logging.log4j.core.filter.AbstractFilter

equalsImpl, filter, filter, filter, filter, filter, filter, filter, filter, filter, filter, getOnMatch, getOnMismatch, hashCodeImpl

Methods inherited from class org.apache.logging.log4j.core.AbstractLifeCycle

getState, getStatusLogger, initialize, isInitialized, isStarted, isStarting, isStopped, isStopping, setStarted, setStarting, setState, setStopped, setStopping, start, stop, stop, stop

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.logging.log4j.core.Filter

filter

Methods inherited from interface org.apache.logging.log4j.core.LifeCycle

getState, initialize, isStarted, isStopped, start, stop

Method Detail

filter

public Filter.Result filter(Logger logger,
                            Level level,
                            Marker marker,
                            String msg,
                            Object... params)

Description copied from class: AbstractFilter

Appender Filter method. The default returns NEUTRAL.

Specified by:

filter in interface Filter

Overrides:

filter in class AbstractFilter

Parameters:

logger - the Logger.

level - The logging Level.

marker - The Marker, if any.

msg - The message, if present.

params - An array of parameters or null.

Returns:

The Result of filtering.

filter

public Filter.Result filter(Logger logger,
                            Level level,
                            Marker marker,
                            Object msg,
                            Throwable t)

Description copied from class: AbstractFilter

Appender Filter method. The default returns NEUTRAL.

Specified by:

filter in interface Filter

Overrides:

filter in class AbstractFilter

Parameters:

logger - the Logger.

level - The logging Level.

marker - The Marker, if any.

msg - The message, if present.

t - A throwable or null.

Returns:

The Result of filtering.

filter

public Filter.Result filter(Logger logger,
                            Level level,
                            Marker marker,
                            Message msg,
                            Throwable t)

Description copied from class: AbstractFilter

Appender Filter method. The default returns NEUTRAL.

Specified by:

filter in interface Filter

Overrides:

filter in class AbstractFilter

Parameters:

logger - the Logger.

level - The logging Level.

marker - The Marker, if any.

msg - The message, if present.

t - A throwable or null.

Returns:

The Result of filtering.

filter

public Filter.Result filter(LogEvent event)

Description copied from class: AbstractFilter

Context Filter method. The default returns NEUTRAL.

Specified by:

filter in interface Filter

Overrides:

filter in class AbstractFilter

Parameters:

event - The LogEvent.

Returns:

The Result of filtering.

toString

public String toString()

Overrides:

toString in class AbstractFilter

createFilter

@PluginFactory
public static RegexFilter createFilter(@PluginAttribute("regex")
                                       String regex,
                                       @PluginElement("PatternFlags")
                                       String[] patternFlags,
                                       @PluginAttribute("useRawMsg")
                                       Boolean useRawMsg,
                                       @PluginAttribute("onMatch")
                                       Filter.Result match,
                                       @PluginAttribute("onMismatch")
                                       Filter.Result mismatch)
                                throws IllegalArgumentException,
                                       IllegalAccessException

Creates a Filter that matches a regular expression.

Parameters:

regex - The regular expression to match.

patternFlags - An array of Strings where each String is a Pattern.compile(String, int) compilation flag.

useRawMsg - If true, for ParameterizedMessage, StringFormattedMessage, and MessageFormatMessage, the message format pattern; for StructuredDataMessage, the message field will be used as the match target.

match - The action to perform when a match occurs.

mismatch - The action to perform when a mismatch occurs.

Returns:

The RegexFilter.

Throws:

IllegalAccessException - When there is no access to the definition of the specified member.

IllegalArgumentException - When passed an illegal or inappropriate argument.