Package com.databricks.jdbc.api.impl.volume

Class InputStreamFixedLenProducer

java.lang.Object

com.databricks.jdbc.api.impl.volume.InputStreamFixedLenProducer

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.hc.core5.http.EntityDetails, org.apache.hc.core5.http.nio.AsyncDataProducer, org.apache.hc.core5.http.nio.AsyncEntityProducer, org.apache.hc.core5.http.nio.ResourceHolder

public final class InputStreamFixedLenProducer
extends Object
implements org.apache.hc.core5.http.nio.AsyncEntityProducer, Closeable

Minimal-copy streaming producer for a single-shot PUT/POST with a known Content-Length. Memory footprint is a single reusable byte[] buffer; data is never duplicated once inside user-space.

Constructor Summary

Constructors

Constructor	Description
InputStreamFixedLenProducer(InputStream source, long contentLength)
InputStreamFixedLenProducer(InputStream source, long contentLength, int bufferSize)

Method Summary

Modifier and Type	Method	Description
int	available()
void	close()
void	failed(Exception cause)
String	getContentEncoding()
long	getContentLength()
String	getContentType()
Set<String>	getTrailerNames()
boolean	isChunked()
boolean	isRepeatable()
void	produce(org.apache.hc.core5.http.nio.DataStreamChannel channel)	Called by the reactor whenever the socket can accept more bytes.
void	releaseResources()

Methods inherited from class java.lang.Object

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

Constructor Detail

InputStreamFixedLenProducer

public InputStreamFixedLenProducer(InputStream source,
                                   long contentLength,
                                   int bufferSize)

Parameters:

source - Input stream to upload. Caller still owns the stream until this producer is closed or an error occurs.

contentLength - Total number of bytes that will be read from source.

bufferSize - Size of the reusable transfer buffer.

InputStreamFixedLenProducer

public InputStreamFixedLenProducer(InputStream source,
                                   long contentLength)

Method Detail

isRepeatable

public boolean isRepeatable()

Specified by:

isRepeatable in interface org.apache.hc.core5.http.nio.AsyncEntityProducer

isChunked

public boolean isChunked()

Specified by:

isChunked in interface org.apache.hc.core5.http.EntityDetails

getContentLength

public long getContentLength()

Specified by:

getContentLength in interface org.apache.hc.core5.http.EntityDetails

getContentType

public String getContentType()

Specified by:

getContentType in interface org.apache.hc.core5.http.EntityDetails

getContentEncoding

public String getContentEncoding()

Specified by:

getContentEncoding in interface org.apache.hc.core5.http.EntityDetails

getTrailerNames

public Set<String> getTrailerNames()

Specified by:

getTrailerNames in interface org.apache.hc.core5.http.EntityDetails

available

public int available()

Specified by:

available in interface org.apache.hc.core5.http.nio.AsyncDataProducer

produce

public void produce(org.apache.hc.core5.http.nio.DataStreamChannel channel)
             throws IOException

Called by the reactor whenever the socket can accept more bytes. Handles partial writes by retaining an outbound ByteBuffer.

Specified by:

produce in interface org.apache.hc.core5.http.nio.AsyncDataProducer

Throws:

IOException

failed

public void failed(Exception cause)

Specified by:

failed in interface org.apache.hc.core5.http.nio.AsyncEntityProducer

releaseResources

public void releaseResources()

Specified by:

releaseResources in interface org.apache.hc.core5.http.nio.ResourceHolder

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable