Package software.amazon.awssdk.http.nio.netty.internal.http2

Class Http2MultiplexedChannelPool

java.lang.Object

software.amazon.awssdk.http.nio.netty.internal.http2.Http2MultiplexedChannelPool

All Implemented Interfaces:

io.netty.channel.pool.ChannelPool, Closeable, AutoCloseable, SdkChannelPool

public class Http2MultiplexedChannelPool
extends Object
implements SdkChannelPool

ChannelPool implementation that handles multiplexed streams. Child channels are created for each HTTP/2 stream using Http2StreamChannelBootstrap with the parent channel being the actual socket channel. This implementation assumes that all connections have the same setting for MAX_CONCURRENT_STREAMS. Concurrent requests are load balanced across all available connections, when the max concurrency for a connection is reached then a new connection will be opened.

Note: This enforces no max concurrency. Relies on being wrapped with a BetterFixedChannelPool to enforce max concurrency which gives a bunch of other good features like timeouts, max pending acquires, etc.

Method Summary

Modifier and Type	Method	Description
io.netty.util.concurrent.Future<io.netty.channel.Channel>	acquire()
io.netty.util.concurrent.Future<io.netty.channel.Channel>	acquire(io.netty.util.concurrent.Promise<io.netty.channel.Channel> promise)
void	close()
CompletableFuture<Void>	collectChannelPoolMetrics(MetricCollector metrics)	Collect channel pool metrics into the provided MetricCollector collection, completing the returned future when all metric publishing is complete.
io.netty.util.concurrent.Future<Void>	release(io.netty.channel.Channel childChannel)
io.netty.util.concurrent.Future<Void>	release(io.netty.channel.Channel childChannel, io.netty.util.concurrent.Promise<Void> promise)

Methods inherited from class java.lang.Object

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

Method Details

acquire

public io.netty.util.concurrent.Future<io.netty.channel.Channel> acquire()

Specified by:

acquire in interface io.netty.channel.pool.ChannelPool

acquire

public io.netty.util.concurrent.Future<io.netty.channel.Channel> acquire(io.netty.util.concurrent.Promise<io.netty.channel.Channel> promise)

Specified by:

acquire in interface io.netty.channel.pool.ChannelPool

release

public io.netty.util.concurrent.Future<Void> release(io.netty.channel.Channel childChannel)

Specified by:

release in interface io.netty.channel.pool.ChannelPool

release

public io.netty.util.concurrent.Future<Void> release(io.netty.channel.Channel childChannel,
 io.netty.util.concurrent.Promise<Void> promise)

Specified by:

release in interface io.netty.channel.pool.ChannelPool

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface io.netty.channel.pool.ChannelPool

Specified by:

close in interface Closeable

collectChannelPoolMetrics

public CompletableFuture<Void> collectChannelPoolMetrics(MetricCollector metrics)

Description copied from interface: SdkChannelPool

Collect channel pool metrics into the provided MetricCollector collection, completing the returned future when all metric publishing is complete.

Specified by:

collectChannelPoolMetrics in interface SdkChannelPool

Parameters:

metrics - The collection to which all metrics should be added.

Returns:

A future that is completed when all metric publishing is complete.