org.apache.druid.frame.channel

Class BlockingQueueFrameChannel

java.lang.Object

org.apache.druid.frame.channel.BlockingQueueFrameChannel

public class BlockingQueueFrameChannel
extends Object

In-memory channel backed by a limited-capacity Deque. Instances of this class provide a ReadableFrameChannel through readable(), and a WritableFrameChannel through writable(). Instances of this class are used by a single writer and single reader. The writer and reader may run concurrently.

Constructor Summary

Constructors

Constructor and Description
BlockingQueueFrameChannel(int maxQueuedFrames) Create a channel with a particular buffer size (expressed in number of frames).

Method Summary

Modifier and Type	Method and Description
static BlockingQueueFrameChannel	minimal() Create a channel that buffers one frame.
ReadableFrameChannel	readable() Returns the readable side of this channel.
WritableFrameChannel	writable() Returns the writable side of this channel.

Methods inherited from class java.lang.Object

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

Constructor Detail

BlockingQueueFrameChannel

public BlockingQueueFrameChannel(int maxQueuedFrames)

Create a channel with a particular buffer size (expressed in number of frames).

Method Detail

writable

public WritableFrameChannel writable()

Returns the writable side of this channel.

readable

public ReadableFrameChannel readable()

Returns the readable side of this channel.

minimal

public static BlockingQueueFrameChannel minimal()

Create a channel that buffers one frame. This is the smallest possible queue size.