External syncer

Makefile

@@ -61,8 +61,10 @@ EXCLUDED_NIM_PACKAGES := 	\
 TOOLS := \
 	test_tools_build \
 	persist \
-	hunter
+	hunter \
+	nrpc
 TOOLS_DIRS := \
+	nrpc \
 	tests \
 	premix
 # comma-separated values for the "clean" target
@@ -108,6 +110,7 @@ VERIF_PROXY_OUT_PATH ?= build/libverifproxy/
 	fluffy \
 	nimbus_verified_proxy \
 	libverifproxy \
+	external_sync \
 	test \
 	test-reproducibility \
 	clean \
@@ -207,7 +210,7 @@ update-from-ci: | sanity-checks update-test
 $(TOOLS): | build deps rocksdb
 	for D in $(TOOLS_DIRS); do [ -e "$${D}/$@.nim" ] && TOOL_DIR="$${D}" && break; done && \
 		echo -e $(BUILD_MSG) "build/$@" && \
-		$(ENV_SCRIPT) nim c $(NIM_PARAMS) -o:build/$@ "$${TOOL_DIR}/$@.nim"
+		$(ENV_SCRIPT) nim c $(NIM_PARAMS) -d:chronicles_log_level=TRACE -o:build/$@ "$${TOOL_DIR}/$@.nim"
 
 # a phony target, because teaching `make` how to do conditional recompilation of Nim projects is too complicated
 nimbus: | build deps rocksdb

nimbus/utils/era_helpers.nim

@@ -117,7 +117,7 @@ proc getWithdrawals*(x: seq[capella.Withdrawal]): seq[common.Withdrawal] =
     )
   return withdrawals
 
-proc getEthBlock(blck: ForkyTrustedBeaconBlock): Opt[EthBlock] =
+proc getEthBlock*(blck: ForkyTrustedBeaconBlock): Opt[EthBlock] =
   ## Convert a beacon block to an eth1 block.
   const consensusFork = typeof(blck).kind
   when consensusFork >= ConsensusFork.Bellatrix:

nrpc/config.nim

@@ -0,0 +1,208 @@
+# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT))
+# at your option.
+# This file may not be copied, modified, or distributed except according to
+# those terms.
+
+{.push raises: [].}
+
+import
+  std/[
+    options,
+    strutils,
+    os,
+    net
+  ],
+  pkg/[
+    chronicles,
+    confutils,
+    confutils/defs,
+    confutils/std/net
+  ],
+  eth/[common, net/utils, net/nat, p2p/enode, p2p/discoveryv5/enr],
+  "../nimbus"/[constants, compile_info],
+  ../nimbus/common/chain_config,
+  ../nimbus/db/opts
+
+export net, defs
+
+func defaultDataDir*(): string =
+  when defined(windows):
+    getHomeDir() / "AppData" / "Roaming" / "Nimbus"
+  elif defined(macosx):
+    getHomeDir() / "Library" / "Application Support" / "Nimbus"
+  else:
+    getHomeDir() / ".cache" / "nimbus"
+
+func getLogLevels(): string =
+  var logLevels: seq[string]
+  for level in LogLevel:
+    if level < enabledLogLevel:
+      continue
+    logLevels.add($level)
+  join(logLevels, ", ")
+
+const
+  logLevelDesc = getLogLevels()
+
+type
+  ChainDbMode* {.pure.} = enum
+    Aristo
+    AriPrune
+
+  NRpcCmd* {.pure.} = enum
+    `external_sync`
+
+  NRpcConf* = object of RootObj
+    ## Main NRpc configuration object
+
+    beaconApi* {.
+      desc: "Beacon API url"
+      defaultValue: ""
+      name: "beacon-api" .}: string
+
+    network {.
+      desc: "Name or id number of Ethereum network(mainnet(1), sepolia(11155111), holesky(17000), other=custom)"
+      longDesc:
+        "- mainnet: Ethereum main network\n" &
+        "- sepolia: Test network (pow+pos) with merge\n" &
+        "- holesky: The holesovice post-merge testnet"
+      defaultValue: "" # the default value is set in makeConfig
+      defaultValueDesc: "mainnet(1)"
+      abbr: "i"
+      name: "network" }: string
+
+    customNetwork {.
+      desc: "Use custom genesis block for private Ethereum Network (as /path/to/genesis.json)"
+      defaultValueDesc: ""
+      abbr: "c"
+      name: "custom-network" }: Option[NetworkParams]
+
+    networkId* {.
+      ignore # this field is not processed by confutils
+      defaultValue: MainNet # the defaultValue value is set by `makeConfig`
+      name: "network-id"}: NetworkId
+
+    networkParams* {.
+      ignore # this field is not processed by confutils
+      defaultValue: NetworkParams() # the defaultValue value is set by `makeConfig`
+      name: "network-params"}: NetworkParams
+
+    logLevel* {.
+      separator: "\pLOGGING AND DEBUGGING OPTIONS:"
+      desc: "Sets the log level for process and topics (" & logLevelDesc & ")"
+      defaultValue: LogLevel.INFO
+      defaultValueDesc: $LogLevel.INFO
+      name: "log-level" }: LogLevel
+
+    logFile* {.
+      desc: "Specifies a path for the written Json log file"
+      name: "log-file" }: Option[OutFile]
+
+    case cmd* {.
+      command
+      desc: "" }: NRpcCmd
+
+    of `external_sync`:
+
+      # https://github.com/ethereum/execution-apis/blob/v1.0.0-beta.4/src/engine/authentication.md#key-distribution
+      jwtSecret* {.
+        desc: "Path to a file containing a 32 byte hex-encoded shared secret" &
+          " needed for websocket authentication. By default, the secret key" &
+          " is auto-generated."
+        defaultValueDesc: "\"jwt.hex\" in the data directory (see --data-dir)"
+        name: "jwt-secret" .}: Option[InputFile]
+
+      elEngineApi* {.
+        desc: "Eth1 Engine API url"
+        defaultValue: ""
+        name: "el-engine-api" .}: string
+
+func parseCmdArg(T: type NetworkId, p: string): T
+    {.gcsafe, raises: [ValueError].} =
+  parseInt(p).T
+
+func completeCmdArg(T: type NetworkId, val: string): seq[string] =
+  return @[]
+
+func parseCmdArg*(T: type enr.Record, p: string): T {.raises: [ValueError].} =
+  result = fromURI(enr.Record, p).valueOr:
+    raise newException(ValueError, "Invalid ENR")
+
+func completeCmdArg*(T: type enr.Record, val: string): seq[string] =
+  return @[]
+
+proc parseCmdArg(T: type NetworkParams, p: string): T
+    {.gcsafe, raises: [ValueError].} =
+  try:
+    if not loadNetworkParams(p, result):
+      raise newException(ValueError, "failed to load customNetwork")
+  except CatchableError:
+    raise newException(ValueError, "failed to load customNetwork")
+
+func completeCmdArg(T: type NetworkParams, val: string): seq[string] =
+  return @[]
+
+
+proc getNetworkId(conf: NRpcConf): Opt[NetworkId] =
+  if conf.network.len == 0:
+    return Opt.none NetworkId
+
+  let network = toLowerAscii(conf.network)
+  case network
+  of "mainnet": return Opt.some MainNet
+  of "sepolia": return Opt.some SepoliaNet
+  of "holesky": return Opt.some HoleskyNet
+  else:
+    try:
+      Opt.some parseInt(network).NetworkId
+    except CatchableError:
+      error "Failed to parse network name or id", network
+      quit QuitFailure
+
+# KLUDGE: The `load()` template does currently not work within any exception
+#         annotated environment.
+{.pop.}
+
+proc makeConfig*(cmdLine = commandLineParams()): NRpcConf
+    {.raises: [CatchableError].} =
+  ## Note: this function is not gc-safe
+
+  # The try/catch clause can go away when `load()` is clean
+  try:
+    {.push warning[ProveInit]: off.}
+    result = NRpcConf.load(
+      cmdLine
+    )
+    {.pop.}
+  except CatchableError as e:
+    raise e
+
+  var networkId = result.getNetworkId()
+
+  if result.customNetwork.isSome:
+    result.networkParams = result.customNetwork.get()
+    if networkId.isNone:
+      # WARNING: networkId and chainId are two distinct things
+      # they usage should not be mixed in other places.
+      # We only set networkId to chainId if networkId not set in cli and
+      # --custom-network is set.
+      # If chainId is not defined in config file, it's ok because
+      # zero means CustomNet
+      networkId = Opt.some(NetworkId(result.networkParams.config.chainId))
+
+  if networkId.isNone:
+    # bootnodes is set via getBootNodes
+    networkId = Opt.some MainNet
+
+  result.networkId = networkId.get()
+
+  if result.customNetwork.isNone:
+    result.networkParams = networkParams(result.networkId)
+
+
+when isMainModule:
+  # for testing purpose
+  discard makeConfig()

nrpc/nim.cfg

@@ -0,0 +1,10 @@
+-d:"chronicles_runtime_filtering=on"
+-d:"chronicles_disable_thread_id"
+
+@if release:
+  -d:"chronicles_line_numbers:0"
+@end
+
+-d:"chronicles_sinks=textlines[file]"
+-d:"chronicles_runtime_filtering=on"
+-d:nimDebugDlOpen