227 lines
6.8 KiB
Nim
227 lines
6.8 KiB
Nim
# Nimbus - Fetch account and storage states from peers efficiently
|
|
#
|
|
# Copyright (c) 2021 Status Research & Development GmbH
|
|
# Licensed under either of
|
|
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
|
|
# http://www.apache.org/licenses/LICENSE-2.0)
|
|
# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
|
|
# http://opensource.org/licenses/MIT)
|
|
# at your option. This file may not be copied, modified, or distributed
|
|
# except according to those terms.
|
|
|
|
import
|
|
std/[strformat, strutils],
|
|
chronos,
|
|
chronicles,
|
|
eth/[common, p2p],
|
|
stint,
|
|
../../../utils/prettify,
|
|
../../misc/timer_helper
|
|
|
|
{.push raises: [Defect].}
|
|
|
|
logScope:
|
|
topics = "snap-tick"
|
|
|
|
type
|
|
TickerStats* = object
|
|
pivotBlock*: Option[BlockNumber]
|
|
nAccounts*: (float,float) ## mean and standard deviation
|
|
accountsFill*: (float,float,float) ## mean, standard deviation, merged total
|
|
nAccountStats*: int ## #chunks
|
|
nSlotLists*: (float,float) ## mean and standard deviation
|
|
nStorageQueue*: Option[int]
|
|
nQueues*: int
|
|
|
|
TickerStatsUpdater* =
|
|
proc: TickerStats {.gcsafe, raises: [Defect].}
|
|
|
|
TickerRef* = ref object
|
|
## Account fetching state that is shared among all peers.
|
|
nBuddies: int
|
|
recovery: bool
|
|
lastRecov: bool
|
|
lastStats: TickerStats
|
|
statsCb: TickerStatsUpdater
|
|
logTicker: TimerCallback
|
|
started: Moment
|
|
visited: Moment
|
|
|
|
const
|
|
tickerStartDelay = chronos.milliseconds(100)
|
|
tickerLogInterval = chronos.seconds(1)
|
|
tickerLogSuppressMax = chronos.seconds(100)
|
|
|
|
# ------------------------------------------------------------------------------
|
|
# Private functions: pretty printing
|
|
# ------------------------------------------------------------------------------
|
|
|
|
# proc ppMs*(elapsed: times.Duration): string
|
|
# {.gcsafe, raises: [Defect, ValueError]} =
|
|
# result = $elapsed.inMilliseconds
|
|
# let ns = elapsed.inNanoseconds mod 1_000_000 # fraction of a milli second
|
|
# if ns != 0:
|
|
# # to rounded deca milli seconds
|
|
# let dm = (ns + 5_000i64) div 10_000i64
|
|
# result &= &".{dm:02}"
|
|
# result &= "ms"
|
|
#
|
|
# proc ppSecs*(elapsed: times.Duration): string
|
|
# {.gcsafe, raises: [Defect, ValueError]} =
|
|
# result = $elapsed.inSeconds
|
|
# let ns = elapsed.inNanoseconds mod 1_000_000_000 # fraction of a second
|
|
# if ns != 0:
|
|
# # round up
|
|
# let ds = (ns + 5_000_000i64) div 10_000_000i64
|
|
# result &= &".{ds:02}"
|
|
# result &= "s"
|
|
#
|
|
# proc ppMins*(elapsed: times.Duration): string
|
|
# {.gcsafe, raises: [Defect, ValueError]} =
|
|
# result = $elapsed.inMinutes
|
|
# let ns = elapsed.inNanoseconds mod 60_000_000_000 # fraction of a minute
|
|
# if ns != 0:
|
|
# # round up
|
|
# let dm = (ns + 500_000_000i64) div 1_000_000_000i64
|
|
# result &= &":{dm:02}"
|
|
# result &= "m"
|
|
#
|
|
# proc pp(d: times.Duration): string
|
|
# {.gcsafe, raises: [Defect, ValueError]} =
|
|
# if 40 < d.inSeconds:
|
|
# d.ppMins
|
|
# elif 200 < d.inMilliseconds:
|
|
# d.ppSecs
|
|
# else:
|
|
# d.ppMs
|
|
|
|
proc pc99(val: float): string =
|
|
if 0.99 <= val and val < 1.0: "99%"
|
|
elif 0.0 < val and val <= 0.01: "1%"
|
|
else: val.toPC(0)
|
|
|
|
# ------------------------------------------------------------------------------
|
|
# Private functions: ticking log messages
|
|
# ------------------------------------------------------------------------------
|
|
|
|
template noFmtError(info: static[string]; code: untyped) =
|
|
try:
|
|
code
|
|
except ValueError as e:
|
|
raiseAssert "Inconveivable (" & info & "): " & e.msg
|
|
|
|
proc setLogTicker(t: TickerRef; at: Moment) {.gcsafe.}
|
|
|
|
proc runLogTicker(t: TickerRef) {.gcsafe.} =
|
|
let
|
|
data = t.statsCb()
|
|
now = Moment.now()
|
|
|
|
if data != t.lastStats or
|
|
t.recovery != t.lastRecov or
|
|
tickerLogSuppressMax < (now - t.visited):
|
|
var
|
|
nAcc, nSto, bulk: string
|
|
pivot = "n/a"
|
|
nStoQue = "n/a"
|
|
let
|
|
recoveryDone = t.lastRecov
|
|
accCov = data.accountsFill[0].pc99 &
|
|
"(" & data.accountsFill[1].pc99 & ")" &
|
|
"/" & data.accountsFill[2].pc99 &
|
|
"~" & data.nAccountStats.uint.toSI
|
|
buddies = t.nBuddies
|
|
|
|
# With `int64`, there are more than 29*10^10 years range for seconds
|
|
up = (now - t.started).seconds.uint64.toSI
|
|
mem = getTotalMem().uint.toSI
|
|
|
|
t.lastStats = data
|
|
t.visited = now
|
|
t.lastRecov = t.recovery
|
|
|
|
noFmtError("runLogTicker"):
|
|
if data.pivotBlock.isSome:
|
|
pivot = &"#{data.pivotBlock.get}/{data.nQueues}"
|
|
nAcc = (&"{(data.nAccounts[0]+0.5).int64}" &
|
|
&"({(data.nAccounts[1]+0.5).int64})")
|
|
nSto = (&"{(data.nSlotLists[0]+0.5).int64}" &
|
|
&"({(data.nSlotLists[1]+0.5).int64})")
|
|
|
|
if data.nStorageQueue.isSome:
|
|
nStoQue = $data.nStorageQueue.unsafeGet
|
|
|
|
if t.recovery:
|
|
info "Snap sync statistics (recovery)",
|
|
up, buddies, pivot, nAcc, accCov, nSto, nStoQue, mem
|
|
elif recoveryDone:
|
|
info "Snap sync statistics (recovery done)",
|
|
up, buddies, pivot, nAcc, accCov, nSto, nStoQue, mem
|
|
else:
|
|
info "Snap sync statistics",
|
|
up, buddies, pivot, nAcc, accCov, nSto, nStoQue, mem
|
|
|
|
t.setLogTicker(Moment.fromNow(tickerLogInterval))
|
|
|
|
|
|
proc setLogTicker(t: TickerRef; at: Moment) =
|
|
if not t.logTicker.isNil:
|
|
t.logTicker = safeSetTimer(at, runLogTicker, t)
|
|
|
|
# ------------------------------------------------------------------------------
|
|
# Public constructor and start/stop functions
|
|
# ------------------------------------------------------------------------------
|
|
|
|
proc init*(T: type TickerRef; cb: TickerStatsUpdater): T =
|
|
## Constructor
|
|
T(statsCb: cb)
|
|
|
|
proc start*(t: TickerRef) =
|
|
## Re/start ticker unconditionally
|
|
#debug "Started ticker"
|
|
t.logTicker = safeSetTimer(Moment.fromNow(tickerStartDelay), runLogTicker, t)
|
|
if t.started == Moment.default:
|
|
t.started = Moment.now()
|
|
|
|
proc stop*(t: TickerRef) =
|
|
## Stop ticker unconditionally
|
|
t.logTicker = nil
|
|
#debug "Stopped ticker"
|
|
|
|
# ------------------------------------------------------------------------------
|
|
# Public functions
|
|
# ------------------------------------------------------------------------------
|
|
|
|
proc startBuddy*(t: TickerRef) =
|
|
## Increment buddies counter and start ticker unless running.
|
|
if t.nBuddies <= 0:
|
|
t.nBuddies = 1
|
|
if not t.recovery:
|
|
t.start()
|
|
else:
|
|
t.nBuddies.inc
|
|
|
|
proc startRecovery*(t: TickerRef) =
|
|
## Ditto for recovery mode
|
|
if not t.recovery:
|
|
t.recovery = true
|
|
if t.nBuddies <= 0:
|
|
t.start()
|
|
|
|
proc stopBuddy*(t: TickerRef) =
|
|
## Decrement buddies counter and stop ticker if there are no more registered
|
|
## buddies.
|
|
t.nBuddies.dec
|
|
if t.nBuddies <= 0 and not t.recovery:
|
|
t.stop()
|
|
|
|
proc stopRecovery*(t: TickerRef) =
|
|
## Ditto for recovery mode
|
|
if t.recovery:
|
|
t.recovery = false
|
|
t.stop()
|
|
|
|
# ------------------------------------------------------------------------------
|
|
# End
|
|
# ------------------------------------------------------------------------------
|