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https://github.com/status-im/nimbus-eth2.git
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10c7920b27
* Proto changes to facilitate backward sync * Update to latest spec types in sync proto * Use blockpool for more straightforward block headers collection * Added BlockPool.getRef * Update beacon_chain/sync_protocol.nim Co-Authored-By: Jacek Sieka <arnetheduck@gmail.com>
37 lines
1.2 KiB
Nim
37 lines
1.2 KiB
Nim
import
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options, random,
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chronos, chronicles,
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spec/datatypes,
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eth2_network, beacon_node_types, sync_protocol,
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eth/async_utils
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proc init*(T: type RequestManager, network: EthereumNode): T =
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T(network: network)
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type
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FetchAncestorsResponseHandler = proc (b: BeaconBlock) {.gcsafe.}
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proc fetchAncestorBlocksFromPeer(peer: Peer, rec: FetchRecord, responseHandler: FetchAncestorsResponseHandler) {.async.} =
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let blocks = await peer.getBeaconBlocks(rec.root, GENESIS_SLOT, rec.historySlots.int, 0, 1)
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if blocks.isSome:
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for b in blocks.get:
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responseHandler(b)
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proc fetchAncestorBlocks*(requestManager: RequestManager,
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roots: seq[FetchRecord],
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responseHandler: FetchAncestorsResponseHandler) =
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# TODO: we could have some fancier logic here:
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#
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# * Keeps track of what was requested
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# (this would give a little bit of time for the asked peer to respond)
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#
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# * Keep track of the average latency of each peer
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# (we can give priority to peers with better latency)
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#
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const ParallelRequests = 2
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var fetchComplete = false
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for peer in requestManager.network.randomPeers(ParallelRequests, BeaconSync):
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traceAsyncErrors peer.fetchAncestorBlocksFromPeer(roots.rand(), responseHandler)
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