Package org.apache.logging.log4j.core.util.internal

Class InternalLoggerRegistry

java.lang.Object

org.apache.logging.log4j.core.util.internal.InternalLoggerRegistry

@NullMarked
public final class InternalLoggerRegistry
extends Object

A registry of Loggers namespaced by name and message factory. This class is internally used by LoggerContext.

We don't use the registry from Log4j API to keep Log4j Core independent from the version of Log4j API at runtime. This also allows Log4j Core to evolve independently from Log4j API.

Since:

2.25.0

Constructor Summary

Constructors

Constructor	Description
InternalLoggerRegistry()

Method Summary

Modifier and Type	Method	Description
Logger	computeIfAbsent(String name, MessageFactory messageFactory, BiFunction<String,MessageFactory,Logger> loggerSupplier)
@Nullable Logger	getLogger(String name, MessageFactory messageFactory)	Returns the logger associated with the given name and message factory.
Collection<Logger>	getLoggers()
boolean	hasLogger(String name, Class<? extends MessageFactory> messageFactoryClass)	Checks if a logger associated with the given name and message factory type exists.
boolean	hasLogger(String name, MessageFactory messageFactory)	Checks if a logger associated with the given name and message factory exists.

Methods inherited from class java.lang.Object

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

Constructor Detail

InternalLoggerRegistry

public InternalLoggerRegistry()

Method Detail

getLogger

public @Nullable Logger getLogger(String name,
                                  MessageFactory messageFactory)

Returns the logger associated with the given name and message factory.

Parameters:

name - a logger name

messageFactory - a message factory

Returns:

the logger associated with the given name and message factory

getLoggers

public Collection<Logger> getLoggers()

hasLogger

public boolean hasLogger(String name,
                         MessageFactory messageFactory)

Checks if a logger associated with the given name and message factory exists.

Parameters:

name - a logger name

messageFactory - a message factory

Returns:

true, if the logger exists; false otherwise.

hasLogger

public boolean hasLogger(String name,
                         Class<? extends MessageFactory> messageFactoryClass)

Checks if a logger associated with the given name and message factory type exists.

Parameters:

name - a logger name

messageFactoryClass - a message factory class

Returns:

true, if the logger exists; false otherwise.

computeIfAbsent

public Logger computeIfAbsent(String name,
                              MessageFactory messageFactory,
                              BiFunction<String,MessageFactory,Logger> loggerSupplier)