76 lines
2.4 KiB
Nim
76 lines
2.4 KiB
Nim
# Nimbus
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# Copyright (c) 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))
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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/[strutils],
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eth/common,
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../web3_eth_conv,
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../beacon_engine,
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web3/execution_types,
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chronicles
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{.push gcsafe, raises:[CatchableError].}
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proc exchangeConf*(ben: BeaconEngineRef,
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conf: TransitionConfigurationV1):
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TransitionConfigurationV1 =
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trace "Engine API request received",
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meth = "exchangeTransitionConfigurationV1",
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ttd = conf.terminalTotalDifficulty,
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number = uint64(conf.terminalBlockNumber),
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blockHash = conf.terminalBlockHash
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let
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com = ben.com
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db = com.db
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ttd = com.ttd
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if ttd.isNone:
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raise newException(ValueError, "invalid ttd: EL (none) CL ($1)" % [
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$conf.terminalTotalDifficulty])
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if conf.terminalTotalDifficulty != ttd.get:
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raise newException(ValueError, "invalid ttd: EL ($1) CL ($2)" % [
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$ttd.get, $conf.terminalTotalDifficulty])
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let
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terminalBlockNumber = u256 conf.terminalBlockNumber
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terminalBlockHash = ethHash conf.terminalBlockHash
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if terminalBlockHash != common.Hash256():
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var headerHash: common.Hash256
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if not db.getBlockHash(terminalBlockNumber, headerHash):
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raise newException(ValueError, "cannot get terminal block hash, number $1" %
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[$terminalBlockNumber])
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if terminalBlockHash != headerHash:
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raise newException(ValueError, "invalid terminal block hash, got $1 want $2" %
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[$terminalBlockHash, $headerHash])
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var header: common.BlockHeader
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if not db.getBlockHeader(headerHash, header):
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raise newException(ValueError, "cannot get terminal block header, hash $1" %
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[$terminalBlockHash])
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return TransitionConfigurationV1(
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terminalTotalDifficulty: ttd.get,
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terminalBlockHash : w3Hash headerHash,
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terminalBlockNumber : w3Qty header.blockNumber
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)
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if terminalBlockNumber.isZero.not:
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raise newException(ValueError, "invalid terminal block number: $1" % [
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$terminalBlockNumber])
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if terminalBlockHash != common.Hash256():
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raise newException(ValueError, "invalid terminal block hash, no terminal header set")
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TransitionConfigurationV1(terminalTotalDifficulty: ttd.get)
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