Class BasicRequestProducer

java.lang.Object

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

All Implemented Interfaces:

AsyncDataProducer, AsyncRequestProducer, ResourceHolder

public class BasicRequestProducer
extends Object
implements AsyncRequestProducer

Basic implementation of AsyncRequestProducer that produces one fixed request and relies on a AsyncEntityProducer to generate request entity stream.

Since:

5.0

Field Summary

Fields

Modifier and Type	Field	Description
private final AsyncEntityProducer	dataProducer
private final HttpRequest	request

Constructor Summary

Constructors

Constructor	Description
BasicRequestProducer(String method, URI requestUri)
BasicRequestProducer(String method, URI requestUri, AsyncEntityProducer dataProducer)
BasicRequestProducer(String method, HttpHost host, String path)
BasicRequestProducer(String method, HttpHost host, String path, AsyncEntityProducer dataProducer)
BasicRequestProducer(HttpRequest request, AsyncEntityProducer dataProducer)
BasicRequestProducer(Method method, URI requestUri)
BasicRequestProducer(Method method, URI requestUri, AsyncEntityProducer dataProducer)
BasicRequestProducer(Method method, HttpHost host, String path)
BasicRequestProducer(Method method, HttpHost host, String path, AsyncEntityProducer dataProducer)

Method Summary

Modifier and Type	Method	Description
int	available()	Returns the number of bytes immediately available for output.
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.
void	releaseResources()
void	sendRequest(RequestChannel requestChannel, HttpContext httpContext)	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 HttpRequest request

dataProducer

private final AsyncEntityProducer dataProducer

Constructor Details

BasicRequestProducer

public BasicRequestProducer(HttpRequest request,
 AsyncEntityProducer dataProducer)

BasicRequestProducer

public BasicRequestProducer(String method,
 HttpHost host,
 String path,
 AsyncEntityProducer dataProducer)

BasicRequestProducer

public BasicRequestProducer(String method,
 HttpHost host,
 String path)

BasicRequestProducer

public BasicRequestProducer(String method,
 URI requestUri,
 AsyncEntityProducer dataProducer)

BasicRequestProducer

public BasicRequestProducer(String method,
 URI requestUri)

BasicRequestProducer

public BasicRequestProducer(Method method,
 HttpHost host,
 String path,
 AsyncEntityProducer dataProducer)

BasicRequestProducer

public BasicRequestProducer(Method method,
 HttpHost host,
 String path)

BasicRequestProducer

public BasicRequestProducer(Method method,
 URI requestUri,
 AsyncEntityProducer dataProducer)

BasicRequestProducer

public BasicRequestProducer(Method method,
 URI requestUri)

Method Details

sendRequest

public void sendRequest(RequestChannel requestChannel,
 HttpContext httpContext)
                 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:

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

httpContext - the actual execution context.

Throws:

HttpException - in case of an HTTP protocol violation.

IOException - in case of an I/O error.

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()

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

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