nimbus-eth1/nimbus/db/geth_db.nim

36 lines
1.2 KiB
Nim

import eth/[rlp, common], core_db
const
headerPrefix = 'h'.byte # headerPrefix + num (uint64 big endian) + hash -> header
headerHashSuffix = 'n'.byte # headerPrefix + num (uint64 big endian) + headerHashSuffix -> hash
blockBodyPrefix = 'b'.byte # blockBodyPrefix + num (uint64 big endian) + hash -> block body
proc headerHash*(db: CoreDbRef, number: uint64): Hash256 =
var key: array[10, byte]
key[0] = headerPrefix
key[1..8] = toBytesBE(number)[0..^1]
key[^1] = headerHashSuffix
let res = db.kvt.get(key)
doAssert(res.len == 32)
result.data[0..31] = res[0..31]
proc blockHeader*(db: CoreDbRef, hash: Hash256, number: uint64): BlockHeader =
var key: array[41, byte]
key[0] = headerPrefix
key[1..8] = toBytesBE(number)[0..^1]
key[9..40] = hash.data[0..^1]
let res = db.kvt.get(key)
result = rlp.decode(res, BlockHeader)
proc blockHeader*(db: CoreDbRef, number: uint64): BlockHeader =
let hash = db.headerHash(number)
db.blockHeader(hash, number)
proc blockBody*(db: CoreDbRef, hash: Hash256, number: uint64): BlockBody =
var key: array[41, byte]
key[0] = blockBodyPrefix
key[1..8] = toBytesBE(number)[0..^1]
key[9..40] = hash.data[0..^1]
let res = db.kvt.get(key)
result = rlp.decode(res, BlockBody)