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

This filter returns the onMatch result if the message matches the regular expression. The "useRawMsg" attribute can be used to indicate whether the regular expression should be applied to the result of calling Message.getMessageFormat (true) or Message.getFormattedMessage() (false). The default is false.

Nested Class Summary

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

Modifier and Type	Field and Description
private static int	DEFAULT_PATTERN_FLAGS
private java.util.regex.Pattern	pattern
private boolean	useRawMessage

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

Constructor Summary

Constructors

Modifier	Constructor and Description
private	RegexFilter(boolean raw, java.util.regex.Pattern pattern, Filter.Result onMatch, Filter.Result onMismatch)

Method Summary

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

getState, initialize, isStarted, isStopped, start, stop

Field Detail

DEFAULT_PATTERN_FLAGS

private static final int DEFAULT_PATTERN_FLAGS

See Also:

Constant Field Values

pattern

private final java.util.regex.Pattern pattern

useRawMessage

private final boolean useRawMessage

Constructor Detail

RegexFilter

private RegexFilter(boolean raw,
                    java.util.regex.Pattern pattern,
                    Filter.Result onMatch,
                    Filter.Result onMismatch)

Method Detail

filter

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

filter

private Filter.Result filter(java.lang.String msg)

toString

public java.lang.String toString()

Overrides:

toString in class AbstractFilter

createFilter

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

Create a Filter that matches a regular expression.

Parameters:

regex - The regular expression to match.

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

useRawMsg - If true, the raw message will be used, otherwise the formatted message will be used.

match - The action to perform when a match occurs.

mismatch - The action to perform when a mismatch occurs.

Returns:

The RegexFilter.

Throws:

java.lang.IllegalAccessException

java.lang.IllegalArgumentException

toPatternFlags

private static int toPatternFlags(java.lang.String[] patternFlags)
                           throws java.lang.IllegalArgumentException,
                                  java.lang.IllegalAccessException

Throws:

java.lang.IllegalArgumentException

java.lang.IllegalAccessException