Package org.apache.hc.core5.http.nio.support

Class AbstractAsyncRequesterConsumer<T,E>

java.lang.Object

org.apache.hc.core5.http.nio.support.AbstractAsyncRequesterConsumer<T,E>

Type Parameters:

T - request processing result representation.

E - request entity representation.

All Implemented Interfaces:

AsyncDataConsumer, AsyncRequestConsumer<T>, ResourceHolder

public abstract class AbstractAsyncRequesterConsumer<T,E>
extends Object
implements AsyncRequestConsumer<T>

Abstract asynchronous request consumer that makes use of AsyncEntityConsumer to process request message content.

Since:

5.0

Field Summary

Fields

Modifier and Type	Field	Description
private final AtomicReference<AsyncEntityConsumer<E>>	dataConsumerRef
private final Supplier<AsyncEntityConsumer<E>>	dataConsumerSupplier

Constructor Summary

Constructors

Constructor	Description
AbstractAsyncRequesterConsumer(Supplier<AsyncEntityConsumer<E>> dataConsumerSupplier)
AbstractAsyncRequesterConsumer(AsyncEntityConsumer<E> dataConsumer)

Method Summary

Modifier and Type	Method	Description
protected abstract T	buildResult(HttpRequest request, E entity, ContentType contentType)	Triggered to generate object that represents a result of request message processing.
final void	consume(ByteBuffer src)	Triggered to pass incoming data to the data consumer.
final void	consumeRequest(HttpRequest request, EntityDetails entityDetails, HttpContext httpContext, FutureCallback<T> resultCallback)	Triggered to signal receipt of a request message head.
final void	failed(Exception cause)	Triggered to signal a failure in data processing.
final void	releaseResources()
final void	streamEnd(List<? extends Header> trailers)	Triggered to signal termination of the data stream.
final void	updateCapacity(CapacityChannel capacityChannel)	Triggered to signal ability of the underlying data stream to receive data capacity update.

Methods inherited from class java.lang.Object

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

Field Details

dataConsumerSupplier

private final Supplier<AsyncEntityConsumer<E>> dataConsumerSupplier

dataConsumerRef

private final AtomicReference<AsyncEntityConsumer<E>> dataConsumerRef

Constructor Details

AbstractAsyncRequesterConsumer

public AbstractAsyncRequesterConsumer(Supplier<AsyncEntityConsumer<E>> dataConsumerSupplier)

AbstractAsyncRequesterConsumer

public AbstractAsyncRequesterConsumer(AsyncEntityConsumer<E> dataConsumer)

Method Details

buildResult

protected abstract T buildResult(HttpRequest request,
 E entity,
 ContentType contentType)

Triggered to generate object that represents a result of request message processing.

Parameters:

request - the request message.

entity - the request entity.

contentType - the request content type.

Returns:

the result of request processing.

consumeRequest

public final void consumeRequest(HttpRequest request,
 EntityDetails entityDetails,
 HttpContext httpContext,
 FutureCallback<T> resultCallback)
                          throws HttpException,
IOException

Description copied from interface: AsyncRequestConsumer

Triggered to signal receipt of a request message head.

Specified by:

consumeRequest in interface AsyncRequestConsumer<T>

Parameters:

request - the request message head.

entityDetails - the request entity details or null if the request does not enclose an entity.

httpContext - the actual execution context.

resultCallback - the result callback called when request processing has been completed successfully or unsuccessfully.

Throws:

HttpException

IOException

updateCapacity

public final void updateCapacity(CapacityChannel capacityChannel)
                          throws IOException

Description copied from interface: AsyncDataConsumer

Triggered to signal ability of the underlying data stream to receive data capacity update. The data consumer can choose to write data immediately inside the call or asynchronously at some later point.

Specified by:

updateCapacity in interface AsyncDataConsumer

Parameters:

capacityChannel - the channel for capacity updates.

Throws:

IOException

consume

public final void consume(ByteBuffer src)
                   throws IOException

Description copied from interface: AsyncDataConsumer

Triggered to pass incoming data to the data consumer. The consumer must consume the entire content of the data buffer. The consumer must stop incrementing its capacity on the capacity channel if it is unable to accept more data. Once the data consumer has handled accumulated data or allocated more intermediate storage it can update its capacity information on the capacity channel.

Specified by:

consume in interface AsyncDataConsumer

Parameters:

src - data source.

Throws:

IOException

streamEnd

public final void streamEnd(List<? extends Header> trailers)
                     throws HttpException,
IOException

Description copied from interface: AsyncDataConsumer

Triggered to signal termination of the data stream.

Specified by:

streamEnd in interface AsyncDataConsumer

Parameters:

trailers - data stream trailers.

Throws:

HttpException

IOException

failed

public final void failed(Exception cause)

Description copied from interface: AsyncRequestConsumer

Triggered to signal a failure in data processing.

Specified by:

failed in interface AsyncRequestConsumer<T>

Parameters:

cause - the cause of the failure.

releaseResources

public final void releaseResources()

Specified by:

releaseResources in interface ResourceHolder