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/** | ||
* Copyright Quadrivium LLC | ||
* All Rights Reserved | ||
* SPDX-License-Identifier: Apache-2.0 | ||
*/ | ||
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#pragma once | ||
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#include <optional> | ||
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#include <boost/endian/conversion.hpp> | ||
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#include "parachain/types.hpp" | ||
#include "primitives/common.hpp" | ||
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namespace kagome { | ||
struct CandidateChunkKey { | ||
static constexpr size_t kCandidateHashSize = | ||
sizeof(parachain::CandidateHash); | ||
static constexpr size_t kChunkIndexSize = sizeof(parachain::ChunkIndex); | ||
using Key = common::Blob<kCandidateHashSize + kChunkIndexSize>; | ||
using HashKey = common::Blob<kCandidateHashSize>; | ||
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static Key encode(const parachain::CandidateHash &candidate_hash, | ||
const parachain::ChunkIndex &chunk_index) { | ||
Key key; | ||
std::copy_n( | ||
encode_hash(candidate_hash).data(), kCandidateHashSize, key.data()); | ||
boost::endian::store_big_u32(key.data() + kCandidateHashSize, | ||
chunk_index); | ||
return key; | ||
} | ||
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static HashKey encode_hash(const parachain::CandidateHash &candidate_hash) { | ||
HashKey key; | ||
std::copy_n(candidate_hash.data(), kCandidateHashSize, key.data()); | ||
return key; | ||
} | ||
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static std::optional< | ||
std::pair<parachain::CandidateHash, parachain::ChunkIndex>> | ||
decode(common::BufferView key) { | ||
if (key.size() != Key::size()) { | ||
return std::nullopt; | ||
} | ||
std::pair<parachain::CandidateHash, parachain::ChunkIndex> candidateChunk; | ||
std::copy_n(key.data(), kCandidateHashSize, candidateChunk.first.data()); | ||
candidateChunk.second = | ||
boost::endian::load_big_u32(key.data() + kCandidateHashSize); | ||
return candidateChunk; | ||
} | ||
}; | ||
} // namespace kagome |
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