org.apache.cassandra.streaming

Class StreamReader

java.lang.Object

org.apache.cassandra.streaming.StreamReader

Direct Known Subclasses:

CompressedStreamReader

public class StreamReader
extends java.lang.Object

StreamReader reads from stream and writes to SSTable.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.UUID	cfId
protected Descriptor	desc
protected long	estimatedKeys
protected Descriptor.Version	inputVersion
protected java.util.Collection<Pair<java.lang.Long,java.lang.Long>>	sections
protected StreamSession	session

Constructor Summary

Constructors

Constructor and Description
StreamReader(FileMessageHeader header, StreamSession session)

Method Summary

Methods

Modifier and Type	Method and Description
protected SSTableWriter	createWriter(ColumnFamilyStore cfs, long totalSize)
protected void	drain(java.io.InputStream dis, long bytesRead)
SSTableWriter	read(java.nio.channels.ReadableByteChannel channel)
protected long	totalSize()
protected void	writeRow(SSTableWriter writer, java.io.DataInput in, ColumnFamilyStore cfs)

Methods inherited from class java.lang.Object

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

Field Detail

cfId

protected final java.util.UUID cfId

estimatedKeys

protected final long estimatedKeys

sections

protected final java.util.Collection<Pair<java.lang.Long,java.lang.Long>> sections

session

protected final StreamSession session

inputVersion

protected final Descriptor.Version inputVersion

desc

protected Descriptor desc

Constructor Detail

StreamReader

public StreamReader(FileMessageHeader header,
            StreamSession session)

Method Detail

read

public SSTableWriter read(java.nio.channels.ReadableByteChannel channel)
                   throws java.io.IOException

Parameters:

channel - where this reads data from

Returns:

SSTable transferred

Throws:

java.io.IOException - if reading the remote sstable fails. Will throw an RTE if local write fails.

createWriter

protected SSTableWriter createWriter(ColumnFamilyStore cfs,
                         long totalSize)
                              throws java.io.IOException

Throws:

java.io.IOException

drain

protected void drain(java.io.InputStream dis,
         long bytesRead)
              throws java.io.IOException

Throws:

java.io.IOException

totalSize

protected long totalSize()

writeRow

protected void writeRow(SSTableWriter writer,
            java.io.DataInput in,
            ColumnFamilyStore cfs)
                 throws java.io.IOException

Throws:

java.io.IOException