Class ClassicToAsyncRequestProducer

java.lang.Object

org.apache.hc.core5.http.nio.support.classic.ClassicToAsyncRequestProducer

All Implemented Interfaces:

AsyncDataProducer, AsyncRequestProducer, ResourceHolder

@Experimental
public class ClassicToAsyncRequestProducer
extends Object
implements AsyncRequestProducer

Since:

5.4

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) class	ClassicToAsyncRequestProducer.InternalOutputStream
static interface	ClassicToAsyncRequestProducer.IORunnable

Field Summary

Fields

Modifier and Type	Field	Description
private final AtomicReference<SharedOutputBuffer>	bufferRef
private final CountDownLatch	countDownLatch
private final AtomicReference<Exception>	exceptionRef
private final int	initialBufferSize
private boolean	repeatable
private final ClassicHttpRequest	request
private final Timeout	timeout

Constructor Summary

Constructors

Constructor	Description
ClassicToAsyncRequestProducer(ClassicHttpRequest request, int initialBufferSize, Timeout timeout)
ClassicToAsyncRequestProducer(ClassicHttpRequest request, Timeout timeout)

Method Summary

Modifier and Type	Method	Description
int	available()	Returns the number of bytes immediately available for output.
ClassicToAsyncRequestProducer.IORunnable	blockWaiting()
void	failed(Exception cause)	Triggered to signal a failure in data generation.
boolean	isRepeatable()	Tests whether the producer can consistently produce the same content after invocation of ResourceHolder.releaseResources().
void	produce(DataStreamChannel channel)	Triggered to signal the ability of the underlying data channel to accept more data.
(package private) void	propagateException()
void	releaseResources()
void	sendRequest(RequestChannel channel, HttpContext context)	Triggered to signal the ability of the underlying request channel to accept a request messages.

Methods inherited from class Object

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

Field Details

request

private final ClassicHttpRequest request

initialBufferSize

private final int initialBufferSize

timeout

private final Timeout timeout

countDownLatch

private final CountDownLatch countDownLatch

bufferRef

private final AtomicReference<SharedOutputBuffer> bufferRef

exceptionRef

private final AtomicReference<Exception> exceptionRef

repeatable

private volatile boolean repeatable

Constructor Details

ClassicToAsyncRequestProducer

public ClassicToAsyncRequestProducer(ClassicHttpRequest request,
 int initialBufferSize,
 Timeout timeout)

ClassicToAsyncRequestProducer

public ClassicToAsyncRequestProducer(ClassicHttpRequest request,
 Timeout timeout)

Method Details

propagateException

void propagateException()
                 throws IOException

Throws:

IOException

blockWaiting

public ClassicToAsyncRequestProducer.IORunnable blockWaiting()
                                                      throws IOException,
InterruptedException

Throws:

IOException

InterruptedException

sendRequest

public void sendRequest(RequestChannel channel,
 HttpContext context)
                 throws HttpException,
IOException

Description copied from interface: AsyncRequestProducer

Triggered to signal the ability of the underlying request channel to accept a request messages. The data producer can choose to send a request message immediately inside the call or asynchronously at some later point.

Specified by:

sendRequest in interface AsyncRequestProducer

Parameters:

channel - the request channel capable to accepting a request message.

context - the actual execution context.

Throws:

HttpException - in case of an HTTP protocol violation.

IOException - in case of an I/O error.

isRepeatable

public boolean isRepeatable()

Description copied from interface: AsyncRequestProducer

Tests whether the producer can consistently produce the same content after invocation of ResourceHolder.releaseResources().

Specified by:

isRepeatable in interface AsyncRequestProducer

available

public int available()

Description copied from interface: AsyncDataProducer

Returns the number of bytes immediately available for output. This method can be used as a hint to control output events of the underlying I/O session.

Please note this method should return zero if the data producer is unable to produce any more data, in which case AsyncDataProducer.produce(DataStreamChannel) method will not get triggered. The producer can resume writing out data asynchronously once more data becomes available or request output readiness events with DataStreamChannel.requestOutput().

Specified by:

available in interface AsyncDataProducer

Returns:

the number of bytes immediately available for output

See Also:

• AsyncDataProducer.produce(DataStreamChannel)
• DataStreamChannel.requestOutput()

produce

public void produce(DataStreamChannel channel)
             throws IOException

Description copied from interface: AsyncDataProducer

Triggered to signal the ability of the underlying data channel to accept more data. The data producer can choose to write data immediately inside the call or asynchronously at some later point.

Please note this method gets triggered only if AsyncDataProducer.available() returns a positive value.

Specified by:

produce in interface AsyncDataProducer

Parameters:

channel - the data channel capable of accepting more data.

Throws:

IOException - in case of an I/O error.

See Also:

• AsyncDataProducer.available()

failed

public void failed(Exception cause)

Description copied from interface: AsyncRequestProducer

Triggered to signal a failure in data generation.

Specified by:

failed in interface AsyncRequestProducer

Parameters:

cause - the cause of the failure.

releaseResources

public void releaseResources()

Specified by:

releaseResources in interface ResourceHolder