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reward.go
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reward.go
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package processor
import (
"bytes"
"context"
"time"
"golang.org/x/xerrors"
"github.com/filecoin-project/go-state-types/big"
"github.com/filecoin-project/specs-actors/actors/builtin"
"github.com/filecoin-project/specs-actors/actors/builtin/reward"
"github.com/filecoin-project/specs-actors/actors/util/smoothing"
"github.com/filecoin-project/lotus/chain/types"
)
type rewardActorInfo struct {
common actorInfo
cumSumBaselinePower big.Int
cumSumRealizedPower big.Int
effectiveNetworkTime int64
effectiveBaselinePower big.Int
newBaselinePower big.Int
newBaseReward big.Int
newSmoothingEstimate *smoothing.FilterEstimate
totalMinedReward big.Int
}
func (p *Processor) setupRewards() error {
tx, err := p.db.Begin()
if err != nil {
return err
}
if _, err := tx.Exec(`
/* captures chain-specific power state for any given stateroot */
create table if not exists chain_reward
(
state_root text not null
constraint chain_reward_pk
primary key,
cum_sum_baseline text not null,
cum_sum_realized text not null,
effective_network_time int not null,
effective_baseline_power text not null,
new_baseline_power text not null,
new_reward numeric not null,
new_reward_smoothed_position_estimate text not null,
new_reward_smoothed_velocity_estimate text not null,
total_mined_reward text not null
);
`); err != nil {
return err
}
return tx.Commit()
}
func (p *Processor) HandleRewardChanges(ctx context.Context, rewardTips ActorTips, nullRounds []types.TipSetKey) error {
rewardChanges, err := p.processRewardActors(ctx, rewardTips, nullRounds)
if err != nil {
return xerrors.Errorf("Failed to process reward actors: %w", err)
}
if err := p.persistRewardActors(ctx, rewardChanges); err != nil {
return err
}
return nil
}
func (p *Processor) processRewardActors(ctx context.Context, rewardTips ActorTips, nullRounds []types.TipSetKey) ([]rewardActorInfo, error) {
start := time.Now()
defer func() {
log.Debugw("Processed Reward Actors", "duration", time.Since(start).String())
}()
var out []rewardActorInfo
for tipset, rewards := range rewardTips {
for _, act := range rewards {
var rw rewardActorInfo
rw.common = act
// get reward actor states at each tipset once for all updates
rewardActor, err := p.node.StateGetActor(ctx, builtin.RewardActorAddr, tipset)
if err != nil {
return nil, xerrors.Errorf("get reward state (@ %s): %w", rw.common.stateroot.String(), err)
}
rewardStateRaw, err := p.node.ChainReadObj(ctx, rewardActor.Head)
if err != nil {
return nil, xerrors.Errorf("read state obj (@ %s): %w", rw.common.stateroot.String(), err)
}
var rewardActorState reward.State
if err := rewardActorState.UnmarshalCBOR(bytes.NewReader(rewardStateRaw)); err != nil {
return nil, xerrors.Errorf("unmarshal state (@ %s): %w", rw.common.stateroot.String(), err)
}
rw.cumSumBaselinePower = rewardActorState.CumsumBaseline
rw.cumSumRealizedPower = rewardActorState.CumsumRealized
rw.effectiveNetworkTime = int64(rewardActorState.EffectiveNetworkTime)
rw.effectiveBaselinePower = rewardActorState.EffectiveBaselinePower
rw.newBaselinePower = rewardActorState.ThisEpochBaselinePower
rw.newBaseReward = rewardActorState.ThisEpochReward
rw.newSmoothingEstimate = rewardActorState.ThisEpochRewardSmoothed
rw.totalMinedReward = rewardActorState.TotalMined
out = append(out, rw)
}
}
for _, tsKey := range nullRounds {
var rw rewardActorInfo
tipset, err := p.node.ChainGetTipSet(ctx, tsKey)
if err != nil {
return nil, err
}
rw.common.tsKey = tipset.Key()
rw.common.height = tipset.Height()
rw.common.stateroot = tipset.ParentState()
rw.common.parentTsKey = tipset.Parents()
// get reward actor states at each tipset once for all updates
rewardActor, err := p.node.StateGetActor(ctx, builtin.RewardActorAddr, tsKey)
if err != nil {
return nil, err
}
rewardStateRaw, err := p.node.ChainReadObj(ctx, rewardActor.Head)
if err != nil {
return nil, err
}
var rewardActorState reward.State
if err := rewardActorState.UnmarshalCBOR(bytes.NewReader(rewardStateRaw)); err != nil {
return nil, err
}
rw.cumSumBaselinePower = rewardActorState.CumsumBaseline
rw.cumSumRealizedPower = rewardActorState.CumsumRealized
rw.effectiveNetworkTime = int64(rewardActorState.EffectiveNetworkTime)
rw.effectiveBaselinePower = rewardActorState.EffectiveBaselinePower
rw.newBaselinePower = rewardActorState.ThisEpochBaselinePower
rw.newBaseReward = rewardActorState.ThisEpochReward
rw.newSmoothingEstimate = rewardActorState.ThisEpochRewardSmoothed
rw.totalMinedReward = rewardActorState.TotalMined
out = append(out, rw)
}
return out, nil
}
func (p *Processor) persistRewardActors(ctx context.Context, rewards []rewardActorInfo) error {
start := time.Now()
defer func() {
log.Debugw("Persisted Reward Actors", "duration", time.Since(start).String())
}()
tx, err := p.db.Begin()
if err != nil {
return xerrors.Errorf("begin chain_reward tx: %w", err)
}
if _, err := tx.Exec(`create temp table cr (like chain_reward excluding constraints) on commit drop`); err != nil {
return xerrors.Errorf("prep chain_reward temp: %w", err)
}
stmt, err := tx.Prepare(`copy cr ( state_root, cum_sum_baseline, cum_sum_realized, effective_network_time, effective_baseline_power, new_baseline_power, new_reward, new_reward_smoothed_position_estimate, new_reward_smoothed_velocity_estimate, total_mined_reward) from STDIN`)
if err != nil {
return xerrors.Errorf("prepare tmp chain_reward: %w", err)
}
for _, rewardState := range rewards {
if _, err := stmt.Exec(
rewardState.common.stateroot.String(),
rewardState.cumSumBaselinePower.String(),
rewardState.cumSumRealizedPower.String(),
rewardState.effectiveNetworkTime,
rewardState.effectiveBaselinePower.String(),
rewardState.newBaselinePower.String(),
rewardState.newBaseReward.String(),
rewardState.newSmoothingEstimate.PositionEstimate.String(),
rewardState.newSmoothingEstimate.VelocityEstimate.String(),
rewardState.totalMinedReward.String(),
); err != nil {
log.Errorw("failed to store chain power", "state_root", rewardState.common.stateroot, "error", err)
}
}
if err := stmt.Close(); err != nil {
return xerrors.Errorf("close prepared chain_reward: %w", err)
}
if _, err := tx.Exec(`insert into chain_reward select * from cr on conflict do nothing`); err != nil {
return xerrors.Errorf("insert chain_reward from tmp: %w", err)
}
if err := tx.Commit(); err != nil {
return xerrors.Errorf("commit chain_reward tx: %w", err)
}
return nil
}