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EpochRewardsCalculator

espresso_types::v0::impls::reward

Struct EpochRewardsCalculator 

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pub struct EpochRewardsCalculator {
    pending: Option<(EpochNumber, JoinHandle<Result<EpochRewardsResult>>)>,
}
Expand description

Manages a single background epoch reward calculation. Each consumer (consensus and state loop) should have its own instance.

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§pending: Option<(EpochNumber, JoinHandle<Result<EpochRewardsResult>>)>

The currently pending calculation, if any.

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impl EpochRewardsCalculator

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pub fn new() -> Self

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pub fn is_calculating(&self, epoch: EpochNumber) -> bool

Check if calculation is in progress for epoch.

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pub async fn get_result( &mut self, epoch: EpochNumber, ) -> Option<EpochRewardsResult>

Retrieve the completed reward calculation for epoch.

If a background task is pending for the requested epoch, this awaits its completion and returns the result. If the pending task is for a different epoch, it is left untouched and None is returned. Also returns None when no pending task exists or the task failed/panicked.

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pub fn spawn_background_task( &mut self, epoch: EpochNumber, epoch_height: u64, reward_tree: RewardMerkleTreeV2, instance_state: NodeState, coordinator: EpochMembershipCoordinator<SeqTypes>, leader_counts: Option<LeaderCounts>, )

Start a background task that calculates epoch rewards. Does nothing if calculation is already in progress for this epoch. Aborts any stale pending task since only one epoch matters at a time.

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async fn fetch_and_calculate( epoch: EpochNumber, epoch_height: u64, reward_tree: RewardMerkleTreeV2, instance_state: NodeState, coordinator: EpochMembershipCoordinator<SeqTypes>, leader_counts: Option<LeaderCounts>, ) -> Result<EpochRewardsResult>

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async fn calculate_all_rewards( epoch: EpochNumber, validator_leader_counts: ValidatorLeaderCounts, reward_tree: RewardMerkleTreeV2, block_reward: RewardAmount, ) -> Result<EpochRewardsResult>

Calculate all rewards for the epoch and update the reward tree.

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impl Debug for EpochRewardsCalculator

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for EpochRewardsCalculator

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fn default() -> EpochRewardsCalculator

Returns the “default value” for a type. Read more

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