/*
* 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.DataInput;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;
import org.apache.cassandra.db.TypeSizes;
import org.apache.cassandra.io.IVersionedSerializer;
import org.apache.cassandra.io.compress.CompressionMetadata;
import org.apache.cassandra.io.util.DataOutputPlus;
import org.apache.cassandra.net.MessagingService;
import org.apache.cassandra.streaming.compress.CompressionInfo;
import org.apache.cassandra.utils.Pair;
import org.apache.cassandra.utils.UUIDSerializer;
/**
* StreamingFileHeader is appended before sending actual data to describe what it's sending.
*/
public class FileMessageHeader
{
public static IVersionedSerializer<FileMessageHeader> serializer = new FileMessageHeaderSerializer();
public final UUID cfId;
public final int sequenceNumber;
/** SSTable version */
public final String version;
public final long estimatedKeys;
public final List<Pair<Long, Long>> sections;
public final CompressionInfo compressionInfo;
public final long repairedAt;
public FileMessageHeader(UUID cfId,
int sequenceNumber,
String version,
long estimatedKeys,
List<Pair<Long, Long>> sections,
CompressionInfo compressionInfo,
long repairedAt)
{
this.cfId = cfId;
this.sequenceNumber = sequenceNumber;
this.version = version;
this.estimatedKeys = estimatedKeys;
this.sections = sections;
this.compressionInfo = compressionInfo;
this.repairedAt = repairedAt;
}
/**
* @return total file size to transfer in bytes
*/
public long size()
{
long size = 0;
if (compressionInfo != null)
{
// calculate total length of transferring chunks
for (CompressionMetadata.Chunk chunk : compressionInfo.chunks)
size += chunk.length + 4; // 4 bytes for CRC
}
else
{
for (Pair<Long, Long> section : sections)
size += section.right - section.left;
}
return size;
}
@Override
public String toString()
{
final StringBuilder sb = new StringBuilder("Header (");
sb.append("cfId: ").append(cfId);
sb.append(", #").append(sequenceNumber);
sb.append(", version: ").append(version);
sb.append(", estimated keys: ").append(estimatedKeys);
sb.append(", transfer size: ").append(size());
sb.append(", compressed?: ").append(compressionInfo != null);
sb.append(", repairedAt: ").append(repairedAt);
sb.append(')');
return sb.toString();
}
@Override
public boolean equals(Object o)
{
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
FileMessageHeader that = (FileMessageHeader) o;
return sequenceNumber == that.sequenceNumber && cfId.equals(that.cfId);
}
@Override
public int hashCode()
{
int result = cfId.hashCode();
result = 31 * result + sequenceNumber;
return result;
}
static class FileMessageHeaderSerializer implements IVersionedSerializer<FileMessageHeader>
{
public void serialize(FileMessageHeader header, DataOutputPlus out, int version) throws IOException
{
UUIDSerializer.serializer.serialize(header.cfId, out, version);
out.writeInt(header.sequenceNumber);
out.writeUTF(header.version);
out.writeLong(header.estimatedKeys);
out.writeInt(header.sections.size());
for (Pair<Long, Long> section : header.sections)
{
out.writeLong(section.left);
out.writeLong(section.right);
}
CompressionInfo.serializer.serialize(header.compressionInfo, out, version);
out.writeLong(header.repairedAt);
}
public FileMessageHeader deserialize(DataInput in, int version) throws IOException
{
UUID cfId = UUIDSerializer.serializer.deserialize(in, MessagingService.current_version);
int sequenceNumber = in.readInt();
String sstableVersion = in.readUTF();
long estimatedKeys = in.readLong();
int count = in.readInt();
List<Pair<Long, Long>> sections = new ArrayList<>(count);
for (int k = 0; k < count; k++)
sections.add(Pair.create(in.readLong(), in.readLong()));
CompressionInfo compressionInfo = CompressionInfo.serializer.deserialize(in, MessagingService.current_version);
long repairedAt = in.readLong();
return new FileMessageHeader(cfId, sequenceNumber, sstableVersion, estimatedKeys, sections, compressionInfo, repairedAt);
}
public long serializedSize(FileMessageHeader header, int version)
{
long size = UUIDSerializer.serializer.serializedSize(header.cfId, version);
size += TypeSizes.NATIVE.sizeof(header.sequenceNumber);
size += TypeSizes.NATIVE.sizeof(header.version);
size += TypeSizes.NATIVE.sizeof(header.estimatedKeys);
size += TypeSizes.NATIVE.sizeof(header.sections.size());
for (Pair<Long, Long> section : header.sections)
{
size += TypeSizes.NATIVE.sizeof(section.left);
size += TypeSizes.NATIVE.sizeof(section.right);
}
size += CompressionInfo.serializer.serializedSize(header.compressionInfo, version);
return size;
}
}
}