Package io.aeron.logbuffer

Package of classes for working with message streams encoded into the log buffers.

See: Description

Interface Summary

Interface	Description
BlockHandler	Function for handling a block of message fragments scanned from the log.
ControlledFragmentHandler	Handler for reading data that is coming from a log buffer.
FragmentHandler	Handler for reading data that is coming from a log buffer.
RawBlockHandler	Function for handling a raw block of fragments from the log that are contained in the underlying file.
TermGapScanner.GapHandler	Handler for notifying of gaps in the log.

Class Summary

Class	Description
BufferClaim	Represents a claimed range in a buffer to be used for recording a message without copy semantics for later commit.
ExclusiveTermAppender	Term buffer appender which supports a single exclusive producer writing an append-only log.
FrameDescriptor	Description of the structure for message framing in a log buffer.
Header	Represents the header of the data frame for accessing meta data fields.
HeaderWriter	Utility for applying a header to a message in a term buffer.
LogBufferDescriptor	Layout description for log buffers which contains partitions of terms with associated term meta data, plus ending with overall log meta data.
LogBufferUnblocker	Provides the functionality to unblock a log at a given position.
TermAppender	Term buffer appender which supports many producers concurrently writing an append-only log.
TermBlockScanner	Scan a term buffer for a block of message fragments including padding.
TermGapFiller	Fills a gap in a term with a padding record.
TermGapScanner	Scans for gaps in the sequence of bytes in a replicated term buffer between the completed rebuild and the high-water-mark.
TermReader	Utility functions for reading a term within a log buffer.
TermRebuilder	Rebuild a term buffer from received frames which can be out-of-order.
TermScanner	Scans a term buffer for an availability range of message fragments.
TermUnblocker	Unblocks a term buffer if a publisher has died leaving the log with a partial log entry.

Enum Summary

Enum	Description
ControlledFragmentHandler.Action	Action to be taken on return from ControlledFragmentHandler.onFragment(DirectBuffer, int, int, Header).
TermUnblocker.Status	Status result of an TermUnblocker.unblock(UnsafeBuffer, UnsafeBuffer, int, int, int) operation.

Package io.aeron.logbuffer Description

Package of classes for working with message streams encoded into the log buffers.