84 lines
2.2 KiB
Nim
84 lines
2.2 KiB
Nim
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# use this module to quickly populate db with data from geth/parity
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import
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eth_common, stint, byteutils, nimcrypto,
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chronicles, rlp, downloader
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import
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eth_trie/[hexary, db, defs],
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../nimbus/db/[storage_types, db_chain, select_backend],
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../nimbus/[genesis, utils, config],
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../nimbus/p2p/chain
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const
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manualCommit = nimbus_db_backend == "lmdb"
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template persistToDb(db: ChainDB, body: untyped) =
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when manualCommit:
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if not db.txBegin(): assert(false)
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body
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when manualCommit:
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if not db.txCommit(): assert(false)
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proc main() =
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# 97 block with uncles
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# 46147 block with first transaction
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# 46400 block with transaction
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# 46402 block with first contract: failed
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# 47205 block with first success contract
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# 48712 block with 5 transactions
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# 48915 block with contract
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# 49018 first problematic block
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# 49439 first block with contract call
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# 52029 first block with receipts logs
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# 66407 failed transaction
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var conf = getConfiguration()
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let db = newChainDb(conf.dataDir)
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let trieDB = trieDB db
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let chainDB = newBaseChainDB(trieDB, false)
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# move head to block number ...
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#var parentBlock = requestBlock(49438.u256)
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#chainDB.setHead(parentBlock.header)
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if canonicalHeadHashKey().toOpenArray notin trieDB:
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persistToDb(db):
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initializeEmptyDb(chainDB)
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assert(canonicalHeadHashKey().toOpenArray in trieDB)
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var head = chainDB.getCanonicalHead()
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var blockNumber = head.blockNumber + 1
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var chain = newChain(chainDB)
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const
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numBlocksToCommit = 128
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numBlocksToDownload = 20000
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var headers = newSeqOfCap[BlockHeader](numBlocksToCommit)
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var bodies = newSeqOfCap[BlockBody](numBlocksToCommit)
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var one = 1.u256
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var numBlocks = 0
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for _ in 0 ..< numBlocksToDownload:
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info "REQUEST HEADER", blockNumber=blockNumber
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var thisBlock = requestBlock(blockNumber)
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headers.add thisBlock.header
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bodies.add thisBlock.body
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inc numBlocks
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blockNumber += one
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if numBlocks == numBlocksToCommit:
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persistToDb(db):
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discard chain.persistBlocks(headers, bodies)
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numBlocks = 0
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headers.setLen(0)
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bodies.setLen(0)
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if numBlocks > 0:
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persistToDb(db):
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discard chain.persistBlocks(headers, bodies)
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main()
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