nwaku/apps/wakunode2/wakunode2.nim

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when (NimMajor, NimMinor) < (1, 4):
{.push raises: [Defect].}
else:
{.push raises: [].}
import
std/[options, strutils, os],
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stew/shims/net as stewNet,
chronicles,
chronos,
metrics,
libbacktrace,
system/ansi_c,
libp2p/crypto/crypto
import
../../waku/common/logging,
./external_config,
./app
logScope:
topics = "wakunode main"
{.pop.} # @TODO confutils.nim(775, 17) Error: can raise an unlisted exception: ref IOError
when isMainModule:
## Node setup happens in 6 phases:
## 1. Set up storage
## 2. Initialize node
## 3. Mount and initialize configured protocols
## 4. Start node and mounted protocols
## 5. Start monitoring tools and external interfaces
## 6. Setup graceful shutdown hooks
const versionString = "version / git commit hash: " & app.git_version
let rng = crypto.newRng()
let confRes = WakuNodeConf.load(version=versionString)
if confRes.isErr():
error "failure while loading the configuration", error=confRes.error
quit(QuitFailure)
let conf = confRes.get()
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## Logging setup
# Adhere to NO_COLOR initiative: https://no-color.org/
let color = try: not parseBool(os.getEnv("NO_COLOR", "false"))
except CatchableError: true
logging.setupLogLevel(conf.logLevel)
logging.setupLogFormat(conf.logFormat, color)
var wakunode2 = App.init(rng, conf)
##############
# Node setup #
##############
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debug "1/7 Setting up storage"
## Peer persistence
let res1 = wakunode2.setupPeerPersistence()
if res1.isErr():
error "1/7 Setting up storage failed", error=res1.error
quit(QuitFailure)
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debug "2/7 Retrieve dynamic bootstrap nodes"
let res3 = wakunode2.setupDyamicBootstrapNodes()
if res3.isErr():
error "2/7 Retrieving dynamic bootstrap nodes failed", error=res3.error
quit(QuitFailure)
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debug "3/7 Initializing node"
let res4 = wakunode2.setupWakuApp()
if res4.isErr():
error "3/7 Initializing node failed", error=res4.error
quit(QuitFailure)
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debug "4/7 Mounting protocols"
let res5 = waitFor wakunode2.setupAndMountProtocols()
if res5.isErr():
error "4/7 Mounting protocols failed", error=res5.error
quit(QuitFailure)
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debug "5/7 Starting node and mounted protocols"
let res6 = waitFor wakunode2.startApp()
if res6.isErr():
error "5/7 Starting node and protocols failed", error=res6.error
quit(QuitFailure)
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debug "6/7 Starting monitoring and external interfaces"
let res7 = wakunode2.setupMonitoringAndExternalInterfaces()
if res7.isErr():
error "6/7 Starting monitoring and external interfaces failed", error=res7.error
quit(QuitFailure)
debug "7/7 Setting up shutdown hooks"
## Setup shutdown hooks for this process.
## Stop node gracefully on shutdown.
proc asyncStopper(node: App) {.async.} =
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await node.stop()
quit(QuitSuccess)
# Handle Ctrl-C SIGINT
proc handleCtrlC() {.noconv.} =
when defined(windows):
# workaround for https://github.com/nim-lang/Nim/issues/4057
setupForeignThreadGc()
notice "Shutting down after receiving SIGINT"
asyncSpawn asyncStopper(wakunode2)
setControlCHook(handleCtrlC)
# Handle SIGTERM
when defined(posix):
proc handleSigterm(signal: cint) {.noconv.} =
notice "Shutting down after receiving SIGTERM"
asyncSpawn asyncStopper(wakunode2)
c_signal(ansi_c.SIGTERM, handleSigterm)
# Handle SIGSEGV
when defined(posix):
proc handleSigsegv(signal: cint) {.noconv.} =
# Require --debugger:native
fatal "Shutting down after receiving SIGSEGV", stacktrace=getBacktrace()
# Not available in -d:release mode
writeStackTrace()
waitFor wakunode2.stop()
quit(QuitFailure)
c_signal(ansi_c.SIGSEGV, handleSigsegv)
info "Node setup complete"
runForever()