50 lines
1.7 KiB
Nim
50 lines
1.7 KiB
Nim
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# beacon_chain
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# Copyright (c) 2023 Status Research & Development GmbH
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# Licensed and distributed under either of
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# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
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# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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import std/strutils
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import "."/common
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{.push raises: [].}
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func perfectScore*(score: float64): bool =
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score == Inf
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proc shortScore*(score: float64): string =
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if score == Inf: "<perfect>" else: formatFloat(score, ffDecimal, 4)
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proc getAttestationDataScore*(rootsSeen: Table[Eth2Digest, Slot],
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adata: ProduceAttestationDataResponse): float64 =
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let
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slot = rootsSeen.getOrDefault(
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adata.data.beacon_block_root, FAR_FUTURE_SLOT)
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let res =
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if (slot == adata.data.slot) and
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(adata.data.source.epoch + 1 == adata.data.target.epoch):
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# Perfect score
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Inf
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else:
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let score = float64(adata.data.source.epoch) +
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float64(adata.data.target.epoch)
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if slot == FAR_FUTURE_SLOT:
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score
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else:
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if adata.data.slot + 1 == slot:
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# To avoid `DivizionByZero` defect.
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score
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else:
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score + float64(1) / (float64(adata.data.slot) + float64(1) -
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float64(slot))
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debug "Attestation score", attestation_data = shortLog(adata.data),
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block_slot = slot, score = shortScore(res)
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res
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proc getAttestationDataScore*(vc: ValidatorClientRef,
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adata: ProduceAttestationDataResponse): float64 =
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getAttestationDataScore(vc.rootsSeen, adata)
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