36 lines
1.1 KiB
Nim
36 lines
1.1 KiB
Nim
import
|
|
options,
|
|
chronos, chronicles,
|
|
spec/datatypes,
|
|
eth2_network, beacon_node_types, sync_protocol
|
|
|
|
proc init*(T: type RequestManager, network: EthereumNode): T =
|
|
T(network: network)
|
|
|
|
type
|
|
FetchAncestorsResponseHandler = proc (b: BeaconBlock) {.gcsafe.}
|
|
|
|
proc fetchAncestorBlocks*(requestManager: RequestManager,
|
|
roots: seq[FetchRecord],
|
|
responseHandler: FetchAncestorsResponseHandler) =
|
|
# TODO: we could have some fancier logic here:
|
|
#
|
|
# * Keeps track of what was requested
|
|
# (this would give a little bit of time for the asked peer to respond)
|
|
#
|
|
# * Keep track of the average latency of each peer
|
|
# (we can give priority to peers with better latency)
|
|
#
|
|
# * Make more parallel requests, just in case
|
|
#
|
|
let peer = requestManager.network.randomPeerWith(BeaconSync)
|
|
if peer != nil:
|
|
var response = peer.getAncestorBlocks(roots)
|
|
response.addCallback do (arg: pointer):
|
|
if not response.failed and response.read.isSome:
|
|
for blk in response.read.get.blocks:
|
|
responseHandler(blk)
|
|
else:
|
|
debug "Failed to obtain ancestor blocks from peer", peer
|
|
|