105 lines
4.0 KiB
Nim
105 lines
4.0 KiB
Nim
# Nimbus
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# Copyright (c) 2022-2023 Status Research & Development GmbH
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# Licensed and distributed under either of
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# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
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# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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{.push raises: [].}
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import
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std/[sequtils, strutils, os, macros],
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stew/results,
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chronos/timer#,
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# eth/common/eth_types
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proc loadBootstrapNodes(
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path: string): seq[string] {.raises: [IOError].} =
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# Read a list of ENR URIs from a file containing a flat list of entries.
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# If the file can't be read, this will raise. This is intentionally.
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splitLines(readFile(path)).
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filterIt(it.startsWith("enr:")).
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mapIt(it.strip())
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proc loadCompileTimeBootstrapNodes(
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path: string): seq[string] =
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try:
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return loadBootstrapNodes(path)
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# TODO: This error doesn't seem to get printed. It instead dies with an
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# unhandled exception (IOError)
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except IOError as err:
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macros.error "Failed to load bootstrap nodes metadata at '" &
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path & "': " & err.msg
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# Need to use std/io readFile because:
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# https://github.com/status-im/nim-stew/issues/145
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proc loadEncodedAccumulator(path: string): string =
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try:
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return readFile(path).string
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except IOError as err:
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macros.error "Failed to read finished accumulator at '" &
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path & "': " & err.msg
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const
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# TODO: Change this from our local repo to an eth-client repo if/when this
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# gets created for the Portal networks.
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portalNetworksDir =
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currentSourcePath.parentDir.replace('\\', '/') / "network_data"
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# TODO: Using a repo for test vectors for now, as it is something to test
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# against, but at the same time could also go in a network metadata repo.
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portalTestDir =
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currentSourcePath.parentDir.parentDir.replace('\\', '/') / "vendor" / "portal-spec-tests" / "tests"
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# Note:
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# For now it gets called testnet0 but this Portal network serves Eth1 mainnet
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# data. Giving the actual Portal (test)networks different names might not be
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# that useful as there is no way to distinguish the networks currently.
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#
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# When more config data is required per Portal network, a metadata object can
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# be created, but right now only bootstrap nodes can be different.
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# TODO: It would be nice to be able to use `loadBootstrapFile` here, but that
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# doesn't work at compile time. The main issue seems to be the usage of
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# rlp.rawData() in the enr code.
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testnet0BootstrapNodes* = loadCompileTimeBootstrapNodes(
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portalNetworksDir / "testnet0" / "bootstrap_nodes.txt")
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finishedAccumulator* = loadEncodedAccumulator(
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portalTestDir / "mainnet" / "history" / "accumulator" / "finished_accumulator.ssz")
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type
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# TODO: I guess we could use the nimbus ChainConfig but:
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# - Only need some of the values right now
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# - `EthTime` uses std/times while chronos Moment is sufficient and more
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# sensible
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ChainConfig* = object
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mergeForkBlock* : uint64
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shanghaiTime* : Opt[Moment]
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cancunTime* : Opt[Moment]
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const
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# Allow this to be adjusted at compile time for testing. If more constants
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# need to be adjusted we can add some more ChainConfig presets either at
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# compile or runtime.
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mergeBlockNumber* {.intdefine.}: uint64 = 15537394
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chainConfig* = ChainConfig(
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mergeForkBlock: mergeBlockNumber,
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shanghaiTime: Opt.some(Moment.init(1681338455'i64, Second)),
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cancunTime: Opt.none(Moment)
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)
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func isTimestampForked(forkTime: Opt[Moment], timestamp: Moment): bool =
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if forkTime.isNone():
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false
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else:
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forkTime.get() <= timestamp
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func isPoSBlock*(c: ChainConfig, blockNumber: uint64): bool =
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c.mergeForkBlock <= blockNumber
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func isShanghai*(c: ChainConfig, timestamp: Moment): bool =
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isTimestampForked(c.shanghaiTime, timestamp)
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func isCancun*(c: ChainConfig, timestamp: Moment): bool =
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isTimestampForked(c.cancunTime, timestamp)
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