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https://gitlab.com/pulsechaincom/prysm-pulse.git
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84916672c6
* replace eth2 types * replace protos * regen proto * replace * gaz * deps * amend * regen proto * mod * gaz * gaz * ensure build * ssz * add dep * no more eth2 types * no more eth2 * remg * all builds * buidl * tidy * clean * fmt * val serv * gaz Co-authored-by: Preston Van Loon <preston@prysmaticlabs.com>
61 lines
2.4 KiB
Go
61 lines
2.4 KiB
Go
package altair
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import (
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"github.com/pkg/errors"
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"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
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"github.com/prysmaticlabs/prysm/beacon-chain/state"
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"github.com/prysmaticlabs/prysm/config/params"
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types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
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"github.com/prysmaticlabs/prysm/math"
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)
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// BaseReward takes state and validator index and calculate
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// individual validator's base reward.
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//
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// Spec code:
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// def get_base_reward(state: BeaconState, index: ValidatorIndex) -> Gwei:
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// """
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// Return the base reward for the validator defined by ``index`` with respect to the current ``state``.
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//
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// Note: An optimally performing validator can earn one base reward per epoch over a long time horizon.
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// This takes into account both per-epoch (e.g. attestation) and intermittent duties (e.g. block proposal
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// and sync committees).
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// """
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// increments = state.validators[index].effective_balance // EFFECTIVE_BALANCE_INCREMENT
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// return Gwei(increments * get_base_reward_per_increment(state))
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func BaseReward(s state.ReadOnlyBeaconState, index types.ValidatorIndex) (uint64, error) {
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totalBalance, err := helpers.TotalActiveBalance(s)
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if err != nil {
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return 0, errors.Wrap(err, "could not calculate active balance")
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}
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return BaseRewardWithTotalBalance(s, index, totalBalance)
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}
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// BaseRewardWithTotalBalance calculates the base reward with the provided total balance.
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func BaseRewardWithTotalBalance(s state.ReadOnlyBeaconState, index types.ValidatorIndex, totalBalance uint64) (uint64, error) {
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val, err := s.ValidatorAtIndexReadOnly(index)
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if err != nil {
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return 0, err
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}
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cfg := params.BeaconConfig()
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increments := val.EffectiveBalance() / cfg.EffectiveBalanceIncrement
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baseRewardPerInc, err := BaseRewardPerIncrement(totalBalance)
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if err != nil {
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return 0, err
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}
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return increments * baseRewardPerInc, nil
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}
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// BaseRewardPerIncrement of the beacon state
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//
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// Spec code:
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// def get_base_reward_per_increment(state: BeaconState) -> Gwei:
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// return Gwei(EFFECTIVE_BALANCE_INCREMENT * BASE_REWARD_FACTOR // integer_squareroot(get_total_active_balance(state)))
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func BaseRewardPerIncrement(activeBalance uint64) (uint64, error) {
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if activeBalance == 0 {
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return 0, errors.New("active balance can't be 0")
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}
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cfg := params.BeaconConfig()
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return cfg.EffectiveBalanceIncrement * cfg.BaseRewardFactor / math.IntegerSquareRoot(activeBalance), nil
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}
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