com.spotify.folsom.client

Class BatchFlusher

java.lang.Object

com.spotify.folsom.client.BatchFlusher

class BatchFlusher
extends Object

A helper for doing opportunistic batching of netty channel flushes, allowing for a gathering write to an underlying GatheringByteChannel, collapsing multiple writes into fewer syscalls.

Field Summary

Fields

Modifier and Type	Field and Description
private io.netty.channel.Channel	channel
private static int	DEFAULT_MAX_PENDING
private io.netty.channel.EventLoop	eventLoop
private Runnable	flush Used to flush all outstanding writes in the outbound channel buffer.
private int	maxPending
private int	pending
private Runnable	wakeup Used to wake up the event loop and schedule a flush to be performed after all outstanding write tasks are run.
private int	woken
private AtomicIntegerFieldUpdater<BatchFlusher>	WOKEN

Constructor Summary

Constructors

Constructor and Description
BatchFlusher(io.netty.channel.Channel channel)
BatchFlusher(io.netty.channel.Channel channel, int maxPending)

Method Summary

Modifier and Type	Method and Description
void	flush() Schedule an asynchronous opportunistically batching flush.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_MAX_PENDING

private static final int DEFAULT_MAX_PENDING

See Also:

Constant Field Values

channel

private final io.netty.channel.Channel channel

eventLoop

private final io.netty.channel.EventLoop eventLoop

maxPending

private final int maxPending

WOKEN

private final AtomicIntegerFieldUpdater<BatchFlusher> WOKEN

woken

private volatile int woken

pending

private int pending

flush

private final Runnable flush

Used to flush all outstanding writes in the outbound channel buffer.

wakeup

private final Runnable wakeup

Used to wake up the event loop and schedule a flush to be performed after all outstanding write tasks are run. The outstanding write tasks must be allowed to run before performing the actual flush in order to ensure that their payloads have been written to the outbound buffer.

Constructor Detail

BatchFlusher

public BatchFlusher(io.netty.channel.Channel channel)

BatchFlusher

public BatchFlusher(io.netty.channel.Channel channel,
                    int maxPending)

Method Detail

flush

public void flush()

Schedule an asynchronous opportunistically batching flush.