49 lines
1.5 KiB
Nim
49 lines
1.5 KiB
Nim
# Nimbus
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# Copyright (c) 2021 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))
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# * MIT license ([LICENSE-MIT](LICENSE-MIT))
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# at your option.
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# This file may not be copied, modified, or distributed except according to
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# those terms.
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import
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std/[terminal, os],
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chronicles, eth/trie/db, eth/[common, rlp], stew/[io2, byteutils],
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./config, ./genesis, ./p2p/chain,
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./db/[db_chain, select_backend, storage_types]
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type
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# trick the rlp decoder
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# so we can separate the body and header
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EthHeader = object
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header: BlockHeader
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proc importRlpBlock*(importFile: string, chainDB: BasechainDB): bool =
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let res = io2.readAllBytes(importFile)
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if res.isErr:
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error "failed to import", fileName = importFile
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return false
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var chain = newChain(chainDB)
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# the encoded rlp can contains one or more blocks
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var rlp = rlpFromBytes(res.get)
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let head = chainDB.getCanonicalHead()
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try:
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while true:
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let header = rlp.read(EthHeader).header
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let body = rlp.readRecordType(BlockBody, false)
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if header.blockNumber > head.blockNumber:
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let valid = chain.persistBlocks([header], [body])
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if valid == ValidationResult.Error:
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error "failed to import rlp encoded blocks", fileName = importFile
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return false
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if not rlp.hasData:
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break
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except CatchableError as e:
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error "rlp error", fileName = importFile, msg = e.msg, exception = e.name
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return false
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return true
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