46 lines
1.6 KiB
Nim
46 lines
1.6 KiB
Nim
# Nimbus
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# Copyright (c) 2020-2023 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
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# http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
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# http://opensource.org/licenses/MIT)
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# at your option. This file may not be copied, modified, or distributed except
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# according to those terms.
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import eth/[rlp, common], core_db
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const
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headerPrefix = 'h'.byte # headerPrefix + num (uint64 big endian) + hash -> header
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headerHashSuffix = 'n'.byte # headerPrefix + num (uint64 big endian) + headerHashSuffix -> hash
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blockBodyPrefix = 'b'.byte # blockBodyPrefix + num (uint64 big endian) + hash -> block body
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proc headerHash*(db: CoreDbRef, number: uint64): Hash256 =
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var key: array[10, byte]
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key[0] = headerPrefix
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key[1..8] = toBytesBE(number)[0..^1]
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key[^1] = headerHashSuffix
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let res = db.kvt.get(key)
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doAssert(res.len == 32)
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result.data[0..31] = res[0..31]
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proc blockHeader*(db: CoreDbRef, hash: Hash256, number: uint64): BlockHeader =
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var key: array[41, byte]
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key[0] = headerPrefix
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key[1..8] = toBytesBE(number)[0..^1]
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key[9..40] = hash.data[0..^1]
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let res = db.kvt.get(key)
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result = rlp.decode(res, BlockHeader)
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proc blockHeader*(db: CoreDbRef, number: uint64): BlockHeader =
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let hash = db.headerHash(number)
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db.blockHeader(hash, number)
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proc blockBody*(db: CoreDbRef, hash: Hash256, number: uint64): BlockBody =
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var key: array[41, byte]
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key[0] = blockBodyPrefix
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key[1..8] = toBytesBE(number)[0..^1]
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key[9..40] = hash.data[0..^1]
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let res = db.kvt.get(key)
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result = rlp.decode(res, BlockBody)
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