nimbus-eth1/fluffy/tools/content_verifier.nim

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# Nimbus
# Copyright (c) 2022 Status Research & Development GmbH
# Licensed and distributed under either of
# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
# at your option. This file may not be copied, modified, or distributed except according to those terms.
# Tool to verify that certain Portal content is available on the network.
# Currently only supports checking `EpochAccumulator`s of the history network.
{.push raises: [Defect].}
import
confutils, chronicles, chronicles/topics_registry, stew/byteutils,
../network_metadata,
../network/history/[accumulator, history_content, history_network],
../rpc/portal_rpc_client
type
ContentVerifierConf* = object
logLevel* {.
defaultValue: LogLevel.INFO
defaultValueDesc: $LogLevel.INFO
desc: "Sets the log level"
name: "log-level" .}: LogLevel
rpcAddress* {.
desc: "Address of the JSON-RPC service"
defaultValue: "127.0.0.1"
name: "rpc-address" .}: string
rpcPort* {.
defaultValue: 8545
desc: "Port of the JSON-RPC service"
name: "rpc-port" .}: uint16
proc checkAccumulators(client: RpcClient) {.async.} =
let accumulator =
# Get it from binary file containing SSZ encoded accumulator
try:
SSZ.decode(finishedAccumulator, FinishedAccumulator)
except SszError as err:
raiseAssert "Invalid baked-in accumulator: " & err.msg
for i, hash in accumulator.historicalEpochs:
let root = Digest(data: hash)
let contentKey = ContentKey.init(epochAccumulator, root)
try:
let content = await client.portal_historyRecursiveFindContent(
contentKey.encode.asSeq().toHex())
let res = decodeSsz(hexToSeqByte(content), EpochAccumulator)
if res.isErr():
echo "[Invalid] EpochAccumulator number " & $i & ": " & $root & " error: " & res.error
else:
let epochAccumulator = res.get()
let resultingRoot = hash_tree_root(epochAccumulator)
if resultingRoot == root:
echo "[Available] EpochAccumulator number " & $i & ": " & $root
else:
echo "[Invalid] EpochAccumulator number " & $i & ": " & $root & " error: Invalid root"
except RpcPostError as e:
# RpcPostError when for example timing out on the request. Could retry
# in this case.
fatal "Error occured on JSON-RPC request", error = e.msg
quit 1
except ValueError as e:
# Either an error with the provided content key or the content was
# simply not available in the network
echo "[Not Available] EpochAccumulator number " & $i & ": " & $root & " error: " & e.msg
# Using the http connection re-use seems to slow down these sequentual
# requests considerably. Force a new connection setup by doing a close after
# each request.
await client.close()
proc run(config: ContentVerifierConf) {.async.} =
let client = newRpcHttpClient()
await client.connect(config.rpcAddress, Port(config.rpcPort), false)
await checkAccumulators(client)
when isMainModule:
{.pop.}
let config = ContentVerifierConf.load()
{.push raises: [Defect].}
setLogLevel(config.logLevel)
waitFor run(config)