org.apache.hadoop.hdfs.server.namenode
Class FSEditLogLoader.PositionTrackingInputStream

java.lang.Object
  java.io.InputStream
      java.io.FilterInputStream
          org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.PositionTrackingInputStream

All Implemented Interfaces:

Closeable

Enclosing class:

org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader

public static class FSEditLogLoader.PositionTrackingInputStream
extends FilterInputStream

Stream wrapper that keeps track of the current stream position. This stream also allows us to set a limit on how many bytes we can read without getting an exception.

Field Summary

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

FSEditLogLoader.PositionTrackingInputStream(InputStream is)

Method Summary

void	clearLimit() Disable limit.
long	getPos()
void	mark(int limit)
int	read()
int	read(byte[] data)
int	read(byte[] data, int offset, int length)
void	reset()
void	setLimit(long limit) Set a limit.
long	skip(long amt)

Methods inherited from class java.io.FilterInputStream

available, close, markSupported

Methods inherited from class java.lang.Object

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

Constructor Detail

FSEditLogLoader.PositionTrackingInputStream

public FSEditLogLoader.PositionTrackingInputStream(InputStream is)

Method Detail

read

public int read()
         throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

read

public int read(byte[] data)
         throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

read

public int read(byte[] data,
                int offset,
                int length)
         throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

setLimit

public void setLimit(long limit)

Set a limit. Calling this function clears any existing limit.

clearLimit

public void clearLimit()

Disable limit.

mark

public void mark(int limit)

Overrides:

mark in class FilterInputStream

reset

public void reset()
           throws IOException

Overrides:

reset in class FilterInputStream

Throws:

IOException

getPos

public long getPos()

skip

public long skip(long amt)
          throws IOException

Overrides:

skip in class FilterInputStream

Throws:

IOException