Class DynamicOutputFromStream

java.lang.Object

org.aksw.vshell.registry.OutputBase

org.aksw.vshell.registry.DynamicOutputFromStream

All Implemented Interfaces:

Closeable, AutoCloseable, DynamicOutput, Output

public class DynamicOutputFromStream
extends OutputBase
implements DynamicOutput

Dynamically add a pipe that other processes can write to. Note right now an upgrade to a pipe sends all writes to the pipe. Actually we can still write directly to the sink. The point is, that the pipe acts as an additional endpoint for writing to the actual output stream.

Field Summary

Fields

Modifier and Type	Field	Description
protected OutputStream	coreOutput
protected Object	lock
protected PosixPipe	pipe
protected CompletableFuture<?>	pumpFuture

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	DynamicOutputFromStream(OutputStream coreOutput)

Method Summary

Modifier and Type	Method	Description
void	close()
Path	getFile()	Return a pipe.
boolean	hasFile()
static DynamicOutputFromStream	of(OutputStream coreOutput)
OutputStream	openOutputStream()
protected void	upgrade()

Methods inherited from class OutputBase

flush, getWriterCharset, hasPrinter, hasWriter, outputStream, printStream, printStream, writer, writer

Methods inherited from class Object

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

Methods inherited from interface Output

flush, getWriterCharset, hasPrinter, hasWriter, outputStream, printStream, printStream, writer, writer

Field Details

coreOutput

protected OutputStream coreOutput

pipe

protected PosixPipe pipe

pumpFuture

protected CompletableFuture<?> pumpFuture

lock

protected Object lock

Constructor Details

DynamicOutputFromStream

protected DynamicOutputFromStream(OutputStream coreOutput)

Method Details

openOutputStream

public OutputStream openOutputStream()
                              throws IOException

Specified by:

openOutputStream in class OutputBase

Throws:

IOException

of

public static DynamicOutputFromStream of(OutputStream coreOutput)

hasFile

public boolean hasFile()

Specified by:

hasFile in interface DynamicOutput

getFile

public Path getFile()
             throws IOException

Description copied from interface: DynamicOutput

Return a pipe. It may be created on-demand, hence the IOException.

Specified by:

getFile in interface DynamicOutput

Throws:

IOException

upgrade

protected void upgrade()
                throws IOException

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class OutputBase

Throws:

IOException