nimbus-eth2/beacon_chain/block_pools/quarantine.nim

56 lines
1.8 KiB
Nim

# beacon_chain
# Copyright (c) 2018-2020 Status Research & Development GmbH
# Licensed and distributed under either of
# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
# at your option. This file may not be copied, modified, or distributed except according to those terms.
import
chronicles, tables, options,
stew/bitops2,
metrics,
../spec/[datatypes, digest],
block_pools_types
export options, block_pools_types
logScope:
topics = "quarant"
{.push raises: [Defect].}
func checkMissing*(quarantine: var QuarantineRef): seq[FetchRecord] =
## Return a list of blocks that we should try to resolve from other client -
## to be called periodically but not too often (once per slot?)
var done: seq[Eth2Digest]
for k, v in quarantine.missing.mpairs():
if v.tries > 8:
done.add(k)
else:
inc v.tries
for k in done:
# TODO Need to potentially remove from quarantine.pending - this is currently a
# memory leak here!
quarantine.missing.del(k)
# simple (simplistic?) exponential backoff for retries..
for k, v in quarantine.missing.pairs():
if countOnes(v.tries.uint64) == 1:
result.add(FetchRecord(root: k))
func addMissing*(quarantine: var QuarantineRef, broot: Eth2Digest) {.inline.} =
if broot notin quarantine.orphans:
discard quarantine.missing.hasKeyOrPut(broot, MissingBlock())
func add*(quarantine: var QuarantineRef, dag: ChainDAGRef,
sblck: SignedBeaconBlock) =
## Adds block to quarantine's `orphans` and `missing` lists.
quarantine.orphans[sblck.root] = sblck
quarantine.missing.del(sblck.root)
let parentRoot = sblck.message.parent_root
if parentRoot notin quarantine.orphans:
quarantine.addMissing(parentRoot)