/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.cassandra.streaming.messages;
import java.io.DataOutput;
import java.io.DataOutputStream;
import java.io.IOException;
import java.nio.channels.Channels;
import java.nio.channels.ReadableByteChannel;
import java.nio.channels.WritableByteChannel;
import java.util.List;
import org.apache.cassandra.io.compress.CompressionMetadata;
import org.apache.cassandra.io.sstable.SSTableReader;
import org.apache.cassandra.streaming.StreamSession;
import org.apache.cassandra.streaming.StreamWriter;
import org.apache.cassandra.streaming.compress.CompressedStreamWriter;
import org.apache.cassandra.streaming.compress.CompressionInfo;
import org.apache.cassandra.utils.Pair;
/**
* OutgoingFileMessage is used to transfer the part(or whole) of a SSTable data file.
*/
public class OutgoingFileMessage extends StreamMessage
{
public static Serializer<OutgoingFileMessage> serializer = new Serializer<OutgoingFileMessage>()
{
public OutgoingFileMessage deserialize(ReadableByteChannel in, int version, StreamSession session) throws IOException
{
throw new UnsupportedOperationException("Not allowed to call deserialize on an outgoing file");
}
public void serialize(OutgoingFileMessage message, WritableByteChannel out, int version, StreamSession session) throws IOException
{
DataOutput output = new DataOutputStream(Channels.newOutputStream(out));
FileMessageHeader.serializer.serialize(message.header, output, version);
final SSTableReader reader = message.sstable;
StreamWriter writer = message.header.compressionInfo == null ?
new StreamWriter(reader, message.header.sections, session) :
new CompressedStreamWriter(reader,
message.header.sections,
message.header.compressionInfo, session);
writer.write(out);
session.fileSent(message.header);
}
};
public FileMessageHeader header;
public SSTableReader sstable;
public OutgoingFileMessage(SSTableReader sstable, int sequenceNumber, long estimatedKeys, List<Pair<Long, Long>> sections, long repairedAt)
{
super(Type.FILE);
this.sstable = sstable;
CompressionInfo compressionInfo = null;
if (sstable.compression)
{
CompressionMetadata meta = sstable.getCompressionMetadata();
compressionInfo = new CompressionInfo(meta.getChunksForSections(sections), meta.parameters);
}
this.header = new FileMessageHeader(sstable.metadata.cfId,
sequenceNumber,
sstable.descriptor.version.toString(),
estimatedKeys,
sections,
compressionInfo,
repairedAt);
}
@Override
public String toString()
{
return "File (" + header + ", file: " + sstable.getFilename() + ")";
}
}