nim-eth/eth/p2p/discoveryv5/dcli.nim

199 lines
5.9 KiB
Nim
Raw Normal View History

2020-06-02 15:21:50 +00:00
import
std/[options, strutils, tables],
confutils, confutils/std/net, chronicles, chronicles/topics_registry,
chronos, metrics, metrics/chronos_httpserver, stew/byteutils,
../../keys, ../../net/nat,
"."/[enr, node],
"."/protocol as discv5_protocol
2020-06-02 15:21:50 +00:00
type
DiscoveryCmd* = enum
noCommand
ping
findNode
talkReq
2020-06-02 15:21:50 +00:00
DiscoveryConf* = object
logLevel* {.
defaultValue: LogLevel.DEBUG
desc: "Sets the log level"
2020-06-02 15:21:50 +00:00
name: "log-level" .}: LogLevel
udpPort* {.
defaultValue: 9009
desc: "UDP listening port"
2020-06-02 15:21:50 +00:00
name: "udp-port" .}: uint16
listenAddress* {.
defaultValue: defaultListenAddress(config)
desc: "Listening address for the Discovery v5 traffic"
name: "listen-address" }: ValidIpAddress
2020-06-02 15:21:50 +00:00
bootnodes* {.
desc: "ENR URI of node to bootstrap discovery with. Argument may be repeated"
2020-06-02 15:21:50 +00:00
name: "bootnode" .}: seq[enr.Record]
nat* {.
desc: "Specify method to use for determining public address. " &
"Must be one of: any, none, upnp, pmp, extip:<IP>"
defaultValue: NatConfig(hasExtIp: false, nat: NatAny)
name: "nat" .}: NatConfig
2020-06-02 15:21:50 +00:00
enrAutoUpdate* {.
defaultValue: false
desc: "Discovery can automatically update its ENR with the IP address " &
"and UDP port as seen by other nodes it communicates with. " &
"This option allows to enable/disable this functionality"
name: "enr-auto-update" .}: bool
nodeKey* {.
desc: "P2P node private key as hex",
defaultValue: PrivateKey.random(keys.newRng()[])
name: "nodekey" .}: PrivateKey
metricsEnabled* {.
defaultValue: false
desc: "Enable the metrics server"
name: "metrics" .}: bool
metricsAddress* {.
defaultValue: defaultAdminListenAddress(config)
desc: "Listening address of the metrics server"
name: "metrics-address" .}: ValidIpAddress
metricsPort* {.
defaultValue: 8008
desc: "Listening HTTP port of the metrics server"
name: "metrics-port" .}: Port
2020-06-02 15:21:50 +00:00
case cmd* {.
command
defaultValue: noCommand }: DiscoveryCmd
of noCommand:
discard
of ping:
pingTarget* {.
argument
2020-06-02 15:21:50 +00:00
desc: "ENR URI of the node to a send ping message"
name: "node" .}: Node
of findNode:
2020-06-02 15:21:50 +00:00
distance* {.
defaultValue: 255
desc: "Distance parameter for the findNode message"
name: "distance" .}: uint16
# TODO: Order here matters as else the help message does not show all the
# information, see: https://github.com/status-im/nim-confutils/issues/15
findNodeTarget* {.
argument
desc: "ENR URI of the node to send a findNode message"
name: "node" .}: Node
of talkReq:
talkReqTarget* {.
2020-11-13 11:45:39 +00:00
argument
desc: "ENR URI of the node to send a talkReq message"
2020-11-13 11:45:39 +00:00
name: "node" .}: Node
2020-06-02 15:21:50 +00:00
func defaultListenAddress*(conf: DiscoveryConf): ValidIpAddress =
(static ValidIpAddress.init("0.0.0.0"))
func defaultAdminListenAddress*(conf: DiscoveryConf): ValidIpAddress =
(static ValidIpAddress.init("127.0.0.1"))
2020-06-02 15:21:50 +00:00
proc parseCmdArg*(T: type enr.Record, p: TaintedString): T =
if not fromURI(result, p):
raise newException(ConfigurationError, "Invalid ENR")
proc completeCmdArg*(T: type enr.Record, val: TaintedString): seq[string] =
return @[]
proc parseCmdArg*(T: type Node, p: TaintedString): T =
var record: enr.Record
if not fromURI(record, p):
raise newException(ConfigurationError, "Invalid ENR")
let n = newNode(record)
if n.isErr:
raise newException(ConfigurationError, $n.error)
if n[].address.isNone():
raise newException(ConfigurationError, "ENR without address")
n[]
proc completeCmdArg*(T: type Node, val: TaintedString): seq[string] =
return @[]
proc parseCmdArg*(T: type PrivateKey, p: TaintedString): T =
try:
result = PrivateKey.fromHex(string(p)).tryGet()
except CatchableError:
raise newException(ConfigurationError, "Invalid private key")
proc completeCmdArg*(T: type PrivateKey, val: TaintedString): seq[string] =
return @[]
proc discover(d: discv5_protocol.Protocol) {.async.} =
while true:
let discovered = await d.queryRandom()
info "Lookup finished", nodes = discovered.len
await sleepAsync(30.seconds)
2020-06-02 15:21:50 +00:00
proc run(config: DiscoveryConf) =
let
bindIp = config.listenAddress
udpPort = Port(config.udpPort)
# TODO: allow for no TCP port mapping!
(extIp, _, extUdpPort) = setupAddress(config.nat,
config.listenAddress, udpPort, udpPort, "dcli")
let d = newProtocol(config.nodeKey,
extIp, none(Port), extUdpPort,
bootstrapRecords = config.bootnodes,
bindIp = bindIp, bindPort = udpPort,
enrAutoUpdate = config.enrAutoUpdate)
2020-06-02 15:21:50 +00:00
d.open()
if config.metricsEnabled:
let
address = config.metricsAddress
port = config.metricsPort
notice "Starting metrics HTTP server",
url = "http://" & $address & ":" & $port & "/metrics"
try:
chronos_httpserver.startMetricsHttpServer($address, port)
except CatchableError as exc: raise exc
except Exception as exc: raiseAssert exc.msg # TODO fix metrics
2020-06-02 15:21:50 +00:00
case config.cmd
of ping:
let pong = waitFor d.ping(config.pingTarget)
if pong.isOk():
echo pong[]
else:
echo "No Pong message returned"
of findNode:
2020-11-13 11:33:07 +00:00
let nodes = waitFor d.findNode(config.findNodeTarget, @[config.distance])
2020-06-02 15:21:50 +00:00
if nodes.isOk():
echo "Received valid records:"
for node in nodes[]:
2020-10-23 14:41:44 +00:00
echo $node.record & " - " & shortLog(node)
2020-06-02 15:21:50 +00:00
else:
echo "No Nodes message returned"
of talkReq:
let talkresp = waitFor d.talkReq(config.talkReqTarget, @[], @[])
2020-11-13 11:45:39 +00:00
if talkresp.isOk():
echo talkresp[]
else:
echo "No Talk Response message returned"
2020-06-02 15:21:50 +00:00
of noCommand:
d.start()
waitFor(discover(d))
2020-06-02 15:21:50 +00:00
when isMainModule:
let config = DiscoveryConf.load()
setLogLevel(config.logLevel)
2020-06-02 15:21:50 +00:00
run(config)