nimbus-eth1/nimbus/sync/snap/update_beacon_header.nim

94 lines
2.9 KiB
Nim

# Nimbus
# 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.
{.push raises: [].}
import
chronicles,
chronos,
eth/[common, p2p],
../sync_desc,
../misc/sync_ctrl,
./worker_desc,
./worker/com/[com_error, get_block_header]
logScope:
topics = "snap-ctrl"
# ------------------------------------------------------------------------------
# Public functions
# ------------------------------------------------------------------------------
proc updateBeaconHeaderbuBlockNumber*(
buddy: SnapBuddyRef; # Worker peer
num: BlockNumber; # Block number to sync against
) {.async.} =
## This function updates the beacon header according to the blok number
## argument.
##
## This function is typically used for testing and debugging.
let
ctx = buddy.ctx
peer = buddy.peer
trace "fetch beacon header", peer, num
if ctx.pool.beaconHeader.blockNumber < num:
let rc = await buddy.getBlockHeader(num)
if rc.isOk:
ctx.pool.beaconHeader = rc.value
proc updateBeaconHeaderFromFile*(
buddy: SnapBuddyRef; # Worker peer
) {.async.} =
## This function updates the beacon header cache by import from the file name
## argument `fileName`. The first line of the contents of the file looks like
## * `0x<hex-number>` -- hash of block header
## * `<decimal-number>` -- block number
## This function is typically used for testing and debugging.
let
ctx = buddy.ctx
hashOrNum = block:
let rc = ctx.exCtrlFile.syncCtrlHashOrBlockNumFromFile
if rc.isErr:
return
rc.value
peer = buddy.peer
var
rc = Result[BlockHeader,ComError].err(ComError(0))
isHash = hashOrNum.isHash # so that the value can be logged
# Parse value dump and fetch a header from the peer (if any)
try:
if isHash:
let hash = hashOrNum.hash
trace "External beacon info", peer, hash
if hash != ctx.pool.beaconHeader.hash:
rc = await buddy.getBlockHeader(hash)
else:
let num = hashOrNum.number
trace "External beacon info", peer, num
if ctx.pool.beaconHeader.blockNumber < num:
rc = await buddy.getBlockHeader(num)
except CatchableError as e:
trace "Exception while parsing beacon info", peer, isHash,
name=($e.name), msg=(e.msg)
if rc.isOk:
if ctx.pool.beaconHeader.blockNumber < rc.value.blockNumber:
ctx.pool.beaconHeader = rc.value
# ------------------------------------------------------------------------------
# End
# ------------------------------------------------------------------------------