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.

Interface Summary

Interface	Description
CleanableThreadContextMap	Extension service provider interface to implement additional custom MDC behavior for ThreadContext.
CopyOnWrite	Marker interface indicating that the implementing class is a copy-on-write data structure.
ExtendedLogger	Extends the Logger interface with methods that facilitate implementing or extending 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.
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.MapFactory<T extends ExtendedLogger>	Interface to control the data structure used by the registry to store the Loggers.
ObjectThreadContextMap	Extension service provider interface to allow putting Object values in the ThreadContext.
ReadOnlyThreadContextMap	Read-only view of the data structure that implements MDC behavior for ThreadContext.
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.
ThreadContextStack	Service provider interface to implement custom NDC behavior for ThreadContext.

Class Summary

Class	Description
AbstractLogger	Base implementation of a Logger.
AbstractLoggerAdapter<L>	Provides an abstract base class to use for implementing LoggerAdapter.
DefaultThreadContextMap	The actual ThreadContext Map.
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.
ExtendedLoggerWrapper	Wrapper class that exposes the protected AbstractLogger methods to support wrapped loggers.
LoggerContextKey	Deprecated. with no replacement - no longer used
LoggerRegistry<T extends ExtendedLogger>	Convenience class to be used by LoggerContext implementations.
LoggerRegistry.ConcurrentMapFactory<T extends ExtendedLogger>	Generates ConcurrentHashMaps for use by the registry to store the Loggers.
LoggerRegistry.WeakMapFactory<T extends ExtendedLogger>	Generates WeakHashMaps for use by the registry to store the Loggers.
MessageFactory2Adapter	Adapts a legacy MessageFactory to the new MessageFactory2 interface.
MutableThreadContextStack	TODO
NoOpThreadContextMap	ThreadContextMap implementation used when either of system properties disableThreadContextMap or .
Provider	Model class for a Log4j 2 provider.
ThreadContextMapFactory	Creates the ThreadContextMap instance used by the ThreadContext.

Enum Summary

Enum	Description
StandardLevel	Standard Logging Levels as an enumeration for use internally.