Package org.apache.logging.log4j.core.async

Provides Asynchronous Logger classes and interfaces for low-latency logging.

Interface Summary

Interface	Description
AsyncLoggerConfigDelegate	Encapsulates the mechanism used to log asynchronously.
AsyncQueueFullPolicy	Policy for deciding whether to discard the event, enqueue it or log the event on the current thread when the queue is full.
BlockingQueueFactory<E>	Factory for creating instances of BlockingQueue.

Class Summary

Class	Description
ArrayBlockingQueueFactory<E>	Factory for creating instances of ArrayBlockingQueue.
AsyncLogger	AsyncLogger is a logger designed for high throughput and low latency logging.
AsyncLoggerConfig	Asynchronous Logger object that is created via configuration and can be combined with synchronous loggers.
AsyncLoggerConfig.RootLogger	An asynchronous root Logger.
AsyncLoggerConfigDefaultExceptionHandler	Default disruptor exception handler for errors that occur in the AsyncLogger background thread.
AsyncLoggerConfigDisruptor	Helper class decoupling the AsyncLoggerConfig class from the LMAX Disruptor library.
AsyncLoggerConfigDisruptor.Log4jEventWrapper	RingBuffer events contain all information necessary to perform the work in a separate thread.
AsyncLoggerContext	LoggerContext that creates AsyncLogger objects.
AsyncLoggerContextSelector	ContextSelector that manages AsyncLoggerContext instances.
AsyncLoggerDefaultExceptionHandler	Default disruptor exception handler for errors that occur in the AsyncLogger background thread.
AsyncQueueFullMessageUtil	Consider this class private.
AsyncQueueFullPolicyFactory	Creates AsyncQueueFullPolicy instances based on user-specified system properties.
DefaultAsyncQueueFullPolicy	Default router: enqueue the event for asynchronous logging in the background thread, unless the current thread is the background thread and the queue is full (enqueueing would cause a deadlock).
DiscardingAsyncQueueFullPolicy	Discarding router extends the DefaultAsyncQueueFullPolicy by first verifying if the queue is fuller than the specified threshold ratio; if this is the case, log events more specific than the specified threshold level are dropped.
DisruptorBlockingQueueFactory<E>	Factory for creating instances of DisruptorBlockingQueue.
InternalAsyncUtil	Helper class providing some async logging-related functionality.
JCToolsBlockingQueueFactory<E>	Factory for creating instances of BlockingQueues backed by JCTools MpscArrayQueue.
LinkedTransferQueueFactory<E>	Factory for creating instances of LinkedTransferQueue.
RingBufferLogEvent	When the Disruptor is started, the RingBuffer is populated with event objects.
RingBufferLogEventHandler	This event handler gets passed messages from the RingBuffer as they become available.
RingBufferLogEventTranslator	This class is responsible for writing elements that make up a log event into the ringbuffer RingBufferLogEvent.

Enum Summary

Enum	Description
EventRoute	Enumeration over the different destinations where a log event can be sent.
JCToolsBlockingQueueFactory.WaitStrategy
ThreadNameCachingStrategy	Strategy for deciding whether thread name should be cached or not.