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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "chunkformats.h"
#include <vespa/vespalib/util/crc.h>
#include <vespa/vespalib/util/stringfmt.h>
#include <xxhash.h>
namespace search {
using vespalib::make_string;
ChunkFormatV1::ChunkFormatV1(vespalib::nbostream & is, uint32_t expectedCrc) :
ChunkFormat()
{
verifyCrc(is, expectedCrc);
deserializeBody(is);
}
ChunkFormatV1::ChunkFormatV1(size_t maxSize) :
ChunkFormat(maxSize)
{
}
uint32_t
ChunkFormatV1::computeCrc(const void * buf, size_t sz) const
{
return vespalib::crc_32_type::crc(buf, sz);
}
ChunkFormatV2::ChunkFormatV2(vespalib::nbostream & is, uint32_t expectedCrc) :
ChunkFormat()
{
verifyCrc(is, expectedCrc);
verifyMagic(is);
deserializeBody(is);
}
ChunkFormatV2::ChunkFormatV2(size_t maxSize) :
ChunkFormat(maxSize)
{
}
uint32_t
ChunkFormatV2::computeCrc(const void * buf, size_t sz) const
{
return XXH32(buf, sz, 0);
}
void
ChunkFormatV2::verifyMagic(vespalib::nbostream & is) const
{
uint32_t magic;
is >> magic;
if (magic != MAGIC) {
throw ChunkException(make_string("Unknown magic %0x, expected %0x", magic, MAGIC), VESPA_STRLOC);
}
}
} // namespace search
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