Package org.apache.nifi.controller.repository.io

Class FlowFileAccessOutputStream

java.lang.Object

java.io.OutputStream

java.io.FilterOutputStream

org.apache.nifi.controller.repository.io.FlowFileAccessOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public class FlowFileAccessOutputStream
extends FilterOutputStream

Wraps an OutputStream so that if any IOException is thrown, it will be wrapped in a FlowFileAccessException. We do this to isolate IOExceptions thrown by the framework from those thrown by user code. If thrown by the framework, it generally indicates a problem communicating with the Content Repository (such as out of disk space) and session rollback is often appropriate so that the FlowFile can be processed again.

Field Summary

Fields

Modifier and Type	Field	Description
private final FlowFile	flowFile
private final OutputStream	out

Constructor Summary

Constructors

Constructor	Description
FlowFileAccessOutputStream(OutputStream out, FlowFile flowFile)

Method Summary

Modifier and Type	Method	Description
void	close()
void	flush()
void	write(byte[] b)
void	write(byte[] b, int off, int len)
void	write(int b)

Methods inherited from class java.io.OutputStream

nullOutputStream

Methods inherited from class java.lang.Object

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

Field Details

flowFile

private final FlowFile flowFile

out

private final OutputStream out

Constructor Details

FlowFileAccessOutputStream

public FlowFileAccessOutputStream(OutputStream out,
 FlowFile flowFile)

Method Details

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class FilterOutputStream

Throws:

IOException

write

public void write(byte[] b,
 int off,
 int len)
           throws IOException

Overrides:

write in class FilterOutputStream

Throws:

IOException

write

public void write(int b)
           throws IOException

Overrides:

write in class FilterOutputStream

Throws:

IOException

write

public void write(byte[] b)
           throws IOException

Overrides:

write in class FilterOutputStream

Throws:

IOException

flush

public void flush()
           throws IOException

Specified by:

flush in interface Flushable

Overrides:

flush in class FilterOutputStream

Throws:

IOException