Package org.apache.logging.log4j.spi

@Export @Version("2.25.0") package org.apache.logging.log4j.spi

Internal interfaces and classes to be used by authors of logging implementations or for internal use by API classes.

Related Packages

Package	Description
org.apache.logging.log4j	Public API for Log4j 2.
org.apache.logging.log4j.message	Public Message Types used for Log4j 2.
org.apache.logging.log4j.simple	Simple logging implementation.
org.apache.logging.log4j.status	Status API for Log4j 2.
org.apache.logging.log4j.util	Internal utility classes for the Log4j 2 API.

Class	Description
AbstractLogger	Base implementation of a Logger.
AbstractLoggerAdapter<L>	Provides an abstract base class to use for implementing LoggerAdapter.
CleanableThreadContextMap	Extension service provider interface to implement additional custom MDC behavior for ThreadContext.
CopyOnWrite	Deprecated. Since 2.24.0 no class implements this.
DefaultThreadContextMap	The default implementation of ThreadContextMap
DefaultThreadContextStack	A copy-on-write thread-safe variant of org.apache.logging.log4j.spi.ThreadContextStack in which all mutative operations (add, pop, and so on) are implemented by making a fresh copy of the underlying list.
ExtendedLogger	Extends the Logger interface with methods that facilitate implementing or extending Loggers.
ExtendedLoggerWrapper	Wrapper class that exposes the protected AbstractLogger methods to support wrapped loggers.
LocationAwareLogger	Logger that accepts the location of the caller.
LoggerAdapter<L>	A basic registry for LoggerContext objects and their associated external Logger classes.
LoggerContext	Anchor point for logging implementations.
LoggerContextFactory	Implemented by factories that create LoggerContext objects.
LoggerContextKey	Deprecated. with no replacement - no longer used
LoggerContextShutdownAware	Interface allowing interested classes to know when a LoggerContext has shutdown - if the LoggerContext implementation provides a way to register listeners.
LoggerContextShutdownEnabled	LoggerContexts implementing this are able register LoggerContextShutdownAware classes.
LoggerRegistry<T extends ExtendedLogger>	Convenience class to be used as an ExtendedLogger registry by LoggerContext implementations.
LoggerRegistry.ConcurrentMapFactory<T extends ExtendedLogger>	Deprecated. As of version 2.25.0, planned to be removed!
LoggerRegistry.MapFactory<T extends ExtendedLogger>	Deprecated. As of version 2.25.0, planned to be removed!
LoggerRegistry.WeakMapFactory<T extends ExtendedLogger>	Deprecated. As of version 2.25.0, planned to be removed!
MessageFactory2Adapter	Adapts a legacy MessageFactory to the new MessageFactory2 interface.
MutableThreadContextStack	TODO
NoOpThreadContextMap	ThreadContextMap implementation used when either of system properties disableThreadContextMap or .
ObjectThreadContextMap	Extension service provider interface to allow putting Object values in the ThreadContext.
Provider	Service class used to bind the Log4j API with an implementation.
ReadOnlyThreadContextMap	Read-only view of the data structure that implements MDC behavior for ThreadContext.
StandardLevel	Standard Logging Levels as an enumeration for use internally.
Terminable	Interface to be implemented by LoggerContext's that provide a shutdown method.
ThreadContextMap	Service provider interface to implement custom MDC behavior for ThreadContext.
ThreadContextMap2	Extension service provider interface to implement additional custom MDC behavior for ThreadContext.
ThreadContextMapFactory	Creates the ThreadContextMap instance used by the ThreadContext.
ThreadContextStack	Service provider interface to implement custom NDC behavior for ThreadContext.