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5aac06f04e
* begin move * use same import path * imports * regen protos * regen * no rename * generate ssz * gaz * fmt * edit build file * imports * modify * remove generated files * remove protos * edit imports in prysm * beacon chain all builds * edit script * add generated pbs * add replace rules * license for ethereumapis protos * change visibility * fmt * update build files to gaz ignore * use proper form * edit imports * wrap block * revert scripts * revert go mod
61 lines
2.1 KiB
Go
61 lines
2.1 KiB
Go
package precompute
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import (
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types "github.com/prysmaticlabs/eth2-types"
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"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
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iface "github.com/prysmaticlabs/prysm/beacon-chain/state/interface"
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ethpb "github.com/prysmaticlabs/prysm/proto/eth/v1alpha1"
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"github.com/prysmaticlabs/prysm/shared/mathutil"
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"github.com/prysmaticlabs/prysm/shared/params"
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)
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// ProcessSlashingsPrecompute processes the slashed validators during epoch processing.
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// This is an optimized version by passing in precomputed total epoch balances.
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func ProcessSlashingsPrecompute(state iface.BeaconState, pBal *Balance) error {
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currentEpoch := helpers.CurrentEpoch(state)
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exitLength := params.BeaconConfig().EpochsPerSlashingsVector
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// Compute the sum of state slashings
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slashings := state.Slashings()
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totalSlashing := uint64(0)
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for _, slashing := range slashings {
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totalSlashing += slashing
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}
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minSlashing := mathutil.Min(totalSlashing*params.BeaconConfig().ProportionalSlashingMultiplier, pBal.ActiveCurrentEpoch)
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epochToWithdraw := currentEpoch + exitLength/2
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var hasSlashing bool
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// Iterate through validator list in state, stop until a validator satisfies slashing condition of current epoch.
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err := state.ReadFromEveryValidator(func(idx int, val iface.ReadOnlyValidator) error {
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correctEpoch := epochToWithdraw == val.WithdrawableEpoch()
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if val.Slashed() && correctEpoch {
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hasSlashing = true
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}
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return nil
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})
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if err != nil {
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return err
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}
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// Exit early if there's no meaningful slashing to process.
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if !hasSlashing {
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return nil
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}
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increment := params.BeaconConfig().EffectiveBalanceIncrement
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validatorFunc := func(idx int, val *ethpb.Validator) (bool, *ethpb.Validator, error) {
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correctEpoch := epochToWithdraw == val.WithdrawableEpoch
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if val.Slashed && correctEpoch {
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penaltyNumerator := val.EffectiveBalance / increment * minSlashing
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penalty := penaltyNumerator / pBal.ActiveCurrentEpoch * increment
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if err := helpers.DecreaseBalance(state, types.ValidatorIndex(idx), penalty); err != nil {
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return false, val, err
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}
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return true, val, nil
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}
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return false, val, nil
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}
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return state.ApplyToEveryValidator(validatorFunc)
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}
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