109 lines
3.7 KiB
C++
109 lines
3.7 KiB
C++
/*
|
|
* 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.
|
|
*
|
|
* Modified by Cloudius Systems.
|
|
* Copyright 2015 Cloudius Systems.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "bytes.hh"
|
|
|
|
namespace streaming {
|
|
namespace compress {
|
|
|
|
/**
|
|
* Container that carries compression parameters and chunks to decompress data from stream.
|
|
*/
|
|
class compression_info {
|
|
#if 0
|
|
public static final IVersionedSerializer<CompressionInfo> serializer = new CompressionInfoSerializer();
|
|
|
|
public final CompressionMetadata.Chunk[] chunks;
|
|
public final CompressionParameters parameters;
|
|
|
|
public CompressionInfo(CompressionMetadata.Chunk[] chunks, CompressionParameters parameters)
|
|
{
|
|
assert chunks != null && parameters != null;
|
|
this.chunks = chunks;
|
|
this.parameters = parameters;
|
|
}
|
|
|
|
static class CompressionInfoSerializer implements IVersionedSerializer<CompressionInfo>
|
|
{
|
|
public void serialize(CompressionInfo info, DataOutputPlus out, int version) throws IOException
|
|
{
|
|
if (info == null)
|
|
{
|
|
out.writeInt(-1);
|
|
return;
|
|
}
|
|
|
|
int chunkCount = info.chunks.length;
|
|
out.writeInt(chunkCount);
|
|
for (int i = 0; i < chunkCount; i++)
|
|
CompressionMetadata.Chunk.serializer.serialize(info.chunks[i], out, version);
|
|
// compression params
|
|
CompressionParameters.serializer.serialize(info.parameters, out, version);
|
|
}
|
|
|
|
public CompressionInfo deserialize(DataInput in, int version) throws IOException
|
|
{
|
|
// chunks
|
|
int chunkCount = in.readInt();
|
|
if (chunkCount < 0)
|
|
return null;
|
|
|
|
CompressionMetadata.Chunk[] chunks = new CompressionMetadata.Chunk[chunkCount];
|
|
for (int i = 0; i < chunkCount; i++)
|
|
chunks[i] = CompressionMetadata.Chunk.serializer.deserialize(in, version);
|
|
|
|
// compression params
|
|
CompressionParameters parameters = CompressionParameters.serializer.deserialize(in, version);
|
|
return new CompressionInfo(chunks, parameters);
|
|
}
|
|
|
|
public long serializedSize(CompressionInfo info, int version)
|
|
{
|
|
if (info == null)
|
|
return TypeSizes.NATIVE.sizeof(-1);
|
|
|
|
// chunks
|
|
int chunkCount = info.chunks.length;
|
|
long size = TypeSizes.NATIVE.sizeof(chunkCount);
|
|
for (int i = 0; i < chunkCount; i++)
|
|
size += CompressionMetadata.Chunk.serializer.serializedSize(info.chunks[i], version);
|
|
// compression params
|
|
size += CompressionParameters.serializer.serializedSize(info.parameters, version);
|
|
return size;
|
|
}
|
|
}
|
|
#endif
|
|
public:
|
|
void serialize(bytes::iterator& out) const {
|
|
}
|
|
static compression_info deserialize(bytes_view& v) {
|
|
return compression_info();
|
|
}
|
|
size_t serialized_size() const {
|
|
return 0;
|
|
}
|
|
};
|
|
|
|
} // namespace compress
|
|
} // namespace streaming
|