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644 lines
20 KiB
644 lines
20 KiB
package chain
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import (
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"bytes"
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"fmt"
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"math/big"
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"sort"
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"time"
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"github.com/harmony-one/harmony/internal/params"
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lru "github.com/hashicorp/golang-lru"
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"github.com/harmony-one/harmony/numeric"
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types2 "github.com/harmony-one/harmony/staking/types"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/rlp"
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"github.com/harmony-one/harmony/block"
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"github.com/harmony-one/harmony/consensus/engine"
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"github.com/harmony-one/harmony/consensus/reward"
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"github.com/harmony-one/harmony/consensus/votepower"
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"github.com/harmony-one/harmony/core/state"
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"github.com/harmony-one/harmony/core/types"
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"github.com/harmony-one/harmony/internal/utils"
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"github.com/harmony-one/harmony/shard"
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"github.com/harmony-one/harmony/staking/availability"
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"github.com/harmony-one/harmony/staking/network"
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stakingReward "github.com/harmony-one/harmony/staking/reward"
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"github.com/pkg/errors"
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)
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// timeout constant
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const (
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// AsyncBlockProposalTimeout is the timeout which will abort the async block proposal.
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AsyncBlockProposalTimeout = 9 * time.Second
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// RewardFrequency the number of blocks between each aggregated reward distribution
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RewardFrequency = 64
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)
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type slotPayable struct {
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shard.Slot
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payout *big.Int
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bucket int
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index int
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shardID uint32
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}
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type slotMissing struct {
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shard.Slot
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bucket int
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index int
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}
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func ballotResultBeaconchain(
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bc engine.ChainReader, header *block.Header,
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) (*big.Int, shard.SlotList, shard.SlotList, shard.SlotList, error) {
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parentHeader := bc.GetHeaderByHash(header.ParentHash())
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if parentHeader == nil {
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return nil, nil, nil, nil, errors.Errorf(
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"cannot find parent block header in DB %s",
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header.ParentHash().Hex(),
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)
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}
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parentShardState, err := bc.ReadShardState(parentHeader.Epoch())
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if err != nil {
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return nil, nil, nil, nil, errors.Errorf(
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"cannot read shard state %v", parentHeader.Epoch(),
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)
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}
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members, payable, missing, err :=
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availability.BallotResult(parentHeader, header, parentShardState, shard.BeaconChainShardID)
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return parentHeader.Epoch(), members, payable, missing, err
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}
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var (
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votingPowerCache, _ = lru.New(16)
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delegateShareCache, _ = lru.New(1024)
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)
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func lookupVotingPower(
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epoch *big.Int, subComm *shard.Committee,
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) (*votepower.Roster, error) {
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// Look up
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key := fmt.Sprintf("%s-%d", epoch.String(), subComm.ShardID)
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if b, ok := votingPowerCache.Get(key); ok {
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return b.(*votepower.Roster), nil
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}
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// If not found, construct
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votingPower, err := votepower.Compute(subComm, epoch)
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if err != nil {
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return nil, err
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}
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// Put in cache
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votingPowerCache.Add(key, votingPower)
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return votingPower, nil
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}
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// Lookup or compute the shares of stake for all delegators in a validator
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func lookupDelegatorShares(
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snapshot *types2.ValidatorSnapshot,
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) (map[common.Address]numeric.Dec, error) {
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epoch := snapshot.Epoch
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validatorSnapshot := snapshot.Validator
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// Look up
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key := fmt.Sprintf("%s-%s", epoch.String(), validatorSnapshot.Address.Hex())
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if b, ok := delegateShareCache.Get(key); ok {
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return b.(map[common.Address]numeric.Dec), nil
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}
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// If not found, construct
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result := map[common.Address]numeric.Dec{}
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totalDelegationDec := numeric.NewDecFromBigInt(validatorSnapshot.TotalDelegation())
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if totalDelegationDec.IsZero() {
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utils.Logger().Info().
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RawJSON("validator-snapshot", []byte(validatorSnapshot.String())).
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Msg("zero total delegation during AddReward delegation payout")
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return result, nil
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}
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for i := range validatorSnapshot.Delegations {
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delegation := validatorSnapshot.Delegations[i]
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// NOTE percentage = <this_delegator_amount>/<total_delegation>
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percentage := numeric.NewDecFromBigInt(delegation.Amount).Quo(totalDelegationDec)
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result[delegation.DelegatorAddress] = percentage
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}
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// Put in cache
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delegateShareCache.Add(key, result)
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return result, nil
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}
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// AccumulateRewardsAndCountSigs credits the coinbase of the given block with the mining
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// reward. The total reward consists of the static block reward
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// This func also do IncrementValidatorSigningCounts for validators
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func AccumulateRewardsAndCountSigs(
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bc engine.ChainReader, state *state.DB,
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header *block.Header, beaconChain engine.ChainReader, sigsReady chan bool,
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) (reward.Reader, error) {
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blockNum := header.Number().Uint64()
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if blockNum == 0 || (bc.Config().IsStaking(header.Epoch()) &&
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bc.CurrentHeader().ShardID() != shard.BeaconChainShardID) {
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// Block here until the commit sigs are ready or timeout.
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// sigsReady signal indicates that the commit sigs are already populated in the header object.
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if err := waitForCommitSigs(sigsReady); err != nil {
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return network.EmptyPayout, err
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}
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return network.EmptyPayout, nil
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}
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// After staking
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if headerE := header.Epoch(); bc.Config().IsStaking(headerE) &&
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bc.CurrentHeader().ShardID() == shard.BeaconChainShardID {
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defaultReward := stakingReward.StakedBlocks
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// the block reward is adjusted accordingly based on 5s and 3s block time forks
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if bc.Config().ChainID == params.TestnetChainID && bc.Config().FiveSecondsEpoch.Cmp(big.NewInt(16500)) == 0 {
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// Testnet:
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// This is testnet requiring the one-off forking logic
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if blockNum > 634644 {
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defaultReward = stakingReward.FiveSecStakedBlocks
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if blockNum > 636507 {
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defaultReward = stakingReward.StakedBlocks
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if blockNum > 639341 {
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defaultReward = stakingReward.FiveSecStakedBlocks
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}
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}
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}
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if bc.Config().IsTwoSeconds(header.Epoch()) {
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defaultReward = stakingReward.TwoSecStakedBlocks
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}
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} else {
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// Mainnet (other nets):
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if bc.Config().IsTwoSeconds(header.Epoch()) {
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defaultReward = stakingReward.TwoSecStakedBlocks
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} else if bc.Config().IsFiveSeconds(header.Epoch()) {
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defaultReward = stakingReward.FiveSecStakedBlocks
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}
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}
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// Following is commented because the new econ-model has a flat-rate block reward
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// of 28 ONE per block assuming 4 shards and 8s block time:
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//// TODO Use cached result in off-chain db instead of full computation
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//_, percentageStaked, err := network.WhatPercentStakedNow(
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// beaconChain, header.Time().Int64(),
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//)
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//if err != nil {
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// return network.EmptyPayout, err
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//}
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//howMuchOff, adjustBy := network.Adjustment(*percentageStaked)
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//defaultReward = defaultReward.Add(adjustBy)
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//utils.Logger().Info().
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// Str("percentage-token-staked", percentageStaked.String()).
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// Str("how-much-off", howMuchOff.String()).
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// Str("adjusting-by", adjustBy.String()).
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// Str("block-reward", defaultReward.String()).
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// Msg("dynamic adjustment of block-reward ")
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// If too much is staked, then possible to have negative reward,
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// not an error, just a possible economic situation, hence we return
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if defaultReward.IsNegative() {
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return network.EmptyPayout, nil
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}
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// Handle rewards for shardchain
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if bc.Config().IsAggregatedRewardEpoch(header.Epoch()) {
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// Block here until the commit sigs are ready or timeout.
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// sigsReady signal indicates that the commit sigs are already populated in the header object.
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if err := waitForCommitSigs(sigsReady); err != nil {
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return network.EmptyPayout, err
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}
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// Only do reward distribution at the 63th block in the modulus
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if blockNum%RewardFrequency != RewardFrequency-1 {
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return network.EmptyPayout, nil
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}
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return distributeRewardAfterAggregateEpoch(bc, state, header, beaconChain, defaultReward)
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} else {
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return distributeRewardBeforeAggregateEpoch(bc, state, header, beaconChain, defaultReward, sigsReady)
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}
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}
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// Before staking
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parentHeader := bc.GetHeaderByHash(header.ParentHash())
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if parentHeader == nil {
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return network.EmptyPayout, errors.Errorf(
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"cannot find parent block header in DB at parent hash %s",
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header.ParentHash().Hex(),
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)
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}
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if parentHeader.Number().Cmp(common.Big0) == 0 {
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// Parent is an epoch block,
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// which is not signed in the usual manner therefore rewards nothing.
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return network.EmptyPayout, nil
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}
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parentShardState, err := bc.ReadShardState(parentHeader.Epoch())
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if err != nil {
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return nil, errors.Wrapf(
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err, "cannot read shard state at epoch %v", parentHeader.Epoch(),
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)
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}
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// Block here until the commit sigs are ready or timeout.
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// sigsReady signal indicates that the commit sigs are already populated in the header object.
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if err := waitForCommitSigs(sigsReady); err != nil {
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return network.EmptyPayout, err
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}
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_, signers, _, err := availability.BallotResult(
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parentHeader, header, parentShardState, header.ShardID(),
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)
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if err != nil {
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return network.EmptyPayout, err
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}
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totalAmount := big.NewInt(0)
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{
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last := big.NewInt(0)
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count := big.NewInt(int64(len(signers)))
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for i, account := range signers {
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cur := big.NewInt(0)
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cur.Mul(stakingReward.PreStakedBlocks, big.NewInt(int64(i+1))).Div(cur, count)
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diff := big.NewInt(0).Sub(cur, last)
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state.AddBalance(account.EcdsaAddress, diff)
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totalAmount.Add(totalAmount, diff)
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last = cur
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}
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}
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if totalAmount.Cmp(stakingReward.PreStakedBlocks) != 0 {
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utils.Logger().Error().
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Int64("block-reward", stakingReward.PreStakedBlocks.Int64()).
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Int64("total-amount-paid-out", totalAmount.Int64()).
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Msg("Total paid out was not equal to block-reward")
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return nil, errors.Wrapf(
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network.ErrPayoutNotEqualBlockReward, "payout "+totalAmount.String(),
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)
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}
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return network.NewPreStakingEraRewarded(totalAmount), nil
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}
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func waitForCommitSigs(sigsReady chan bool) error {
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select {
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case success := <-sigsReady:
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if !success {
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return errors.New("Failed to get commit sigs")
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}
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utils.Logger().Info().Msg("Commit sigs are ready")
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case <-time.After(AsyncBlockProposalTimeout):
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return errors.New("Timeout waiting for commit sigs for reward calculation")
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}
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return nil
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}
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func distributeRewardAfterAggregateEpoch(bc engine.ChainReader, state *state.DB, header *block.Header, beaconChain engine.ChainReader,
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defaultReward numeric.Dec) (reward.Reader, error) {
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newRewards, payouts :=
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big.NewInt(0), []reward.Payout{}
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allPayables := []slotPayable{}
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curBlockNum := header.Number().Uint64()
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allCrossLinks := types.CrossLinks{}
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startTime := time.Now()
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// loop through [0...63] position in the modulus index of the 64 blocks
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// Note the current block is at position 63 of the modulus.
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for i := curBlockNum - RewardFrequency + 1; i <= curBlockNum; i++ {
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if i < 0 {
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continue
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}
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var curHeader *block.Header
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if i == curBlockNum {
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// When it's the current block (63th), we should use the provided header since it's not written in db yet.
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curHeader = header
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} else {
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curHeader = bc.GetHeaderByNumber(i)
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}
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// Put shard 0 signatures as a crosslink for easy and consistent processing as other shards' crosslinks
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allCrossLinks = append(allCrossLinks, *types.NewCrossLink(curHeader, bc.GetHeaderByHash(curHeader.ParentHash())))
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// Put the real crosslinks in the list
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if cxLinks := curHeader.CrossLinks(); len(cxLinks) > 0 {
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crossLinks := types.CrossLinks{}
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if err := rlp.DecodeBytes(cxLinks, &crossLinks); err != nil {
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return network.EmptyPayout, err
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}
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allCrossLinks = append(allCrossLinks, crossLinks...)
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}
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}
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for i := range allCrossLinks {
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cxLink := allCrossLinks[i]
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if !bc.Config().IsStaking(cxLink.Epoch()) {
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continue
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}
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utils.Logger().Info().Msg(fmt.Sprintf("allCrossLinks shard %d block %d", cxLink.ShardID(), cxLink.BlockNum()))
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payables, _, err := processOneCrossLink(bc, state, cxLink, defaultReward, i)
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if err != nil {
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return network.EmptyPayout, err
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}
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allPayables = append(allPayables, payables...)
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}
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// Aggregate all the rewards for each validator
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allValidatorPayable := map[common.Address]*big.Int{}
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allAddresses := []common.Address{}
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for _, payThem := range allPayables {
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if _, ok := allValidatorPayable[payThem.EcdsaAddress]; !ok {
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allValidatorPayable[payThem.EcdsaAddress] = big.NewInt(0).SetBytes(payThem.payout.Bytes())
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} else {
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allValidatorPayable[payThem.EcdsaAddress] = big.NewInt(0).Add(allValidatorPayable[payThem.EcdsaAddress], payThem.payout)
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}
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payouts = append(payouts, reward.Payout{
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Addr: payThem.EcdsaAddress,
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NewlyEarned: payThem.payout,
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EarningKey: payThem.BLSPublicKey,
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})
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}
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for addr, _ := range allValidatorPayable {
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allAddresses = append(allAddresses, addr)
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}
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// always sort validators by address before rewarding
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sort.SliceStable(allAddresses,
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func(i, j int) bool {
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return bytes.Compare(allAddresses[i][:], allAddresses[j][:]) < 0
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},
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)
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// Finally do the pay
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startTimeLocal := time.Now()
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for _, addr := range allAddresses {
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snapshot, err := bc.ReadValidatorSnapshot(addr)
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if err != nil {
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return network.EmptyPayout, err
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}
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due := allValidatorPayable[addr]
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newRewards.Add(newRewards, due)
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shares, err := lookupDelegatorShares(snapshot)
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if err != nil {
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return network.EmptyPayout, err
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}
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if err := state.AddReward(snapshot.Validator, due, shares); err != nil {
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return network.EmptyPayout, err
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}
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}
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utils.Logger().Debug().Int64("elapsed time", time.Now().Sub(startTimeLocal).Milliseconds()).Msg("After Chain Reward (AddReward)")
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utils.Logger().Debug().Int64("elapsed time", time.Now().Sub(startTime).Milliseconds()).Msg("After Chain Reward")
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return network.NewStakingEraRewardForRound(
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newRewards, payouts,
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), nil
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}
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func distributeRewardBeforeAggregateEpoch(bc engine.ChainReader, state *state.DB, header *block.Header, beaconChain engine.ChainReader,
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defaultReward numeric.Dec, sigsReady chan bool) (reward.Reader, error) {
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newRewards, payouts :=
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big.NewInt(0), []reward.Payout{}
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allPayables := []slotPayable{}
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if cxLinks := header.CrossLinks(); len(cxLinks) > 0 {
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startTime := time.Now()
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crossLinks := types.CrossLinks{}
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if err := rlp.DecodeBytes(cxLinks, &crossLinks); err != nil {
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return network.EmptyPayout, err
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}
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utils.Logger().Debug().Int64("elapsed time", time.Now().Sub(startTime).Milliseconds()).Msg("Decode Cross Links")
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startTime = time.Now()
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for i := range crossLinks {
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cxLink := crossLinks[i]
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payables, _, err := processOneCrossLink(bc, state, cxLink, defaultReward, i)
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if err != nil {
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return network.EmptyPayout, err
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}
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allPayables = append(allPayables, payables...)
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}
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resultsHandle := make([][]slotPayable, len(crossLinks))
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for i := range resultsHandle {
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resultsHandle[i] = []slotPayable{}
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}
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for _, payThem := range allPayables {
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bucket := payThem.bucket
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resultsHandle[bucket] = append(resultsHandle[bucket], payThem)
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}
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// Check if any errors and sort each bucket to enforce order
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for bucket := range resultsHandle {
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sort.SliceStable(resultsHandle[bucket],
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func(i, j int) bool {
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return resultsHandle[bucket][i].index < resultsHandle[bucket][j].index
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},
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)
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}
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// Finally do the pay
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startTimeLocal := time.Now()
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for bucket := range resultsHandle {
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for payThem := range resultsHandle[bucket] {
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payable := resultsHandle[bucket][payThem]
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snapshot, err := bc.ReadValidatorSnapshot(
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payable.EcdsaAddress,
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)
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if err != nil {
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return network.EmptyPayout, err
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}
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due := resultsHandle[bucket][payThem].payout
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newRewards.Add(newRewards, due)
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shares, err := lookupDelegatorShares(snapshot)
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if err != nil {
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return network.EmptyPayout, err
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}
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if err := state.AddReward(snapshot.Validator, due, shares); err != nil {
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return network.EmptyPayout, err
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}
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payouts = append(payouts, reward.Payout{
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Addr: payable.EcdsaAddress,
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NewlyEarned: due,
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EarningKey: payable.BLSPublicKey,
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})
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}
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}
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utils.Logger().Debug().Int64("elapsed time", time.Now().Sub(startTimeLocal).Milliseconds()).Msg("Shard Chain Reward (AddReward)")
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utils.Logger().Debug().Int64("elapsed time", time.Now().Sub(startTime).Milliseconds()).Msg("Shard Chain Reward")
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}
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// Block here until the commit sigs are ready or timeout.
|
|
// sigsReady signal indicates that the commit sigs are already populated in the header object.
|
|
if err := waitForCommitSigs(sigsReady); err != nil {
|
|
return network.EmptyPayout, err
|
|
}
|
|
|
|
startTime := time.Now()
|
|
// Take care of my own beacon chain committee, _ is missing, for slashing
|
|
parentE, members, payable, missing, err := ballotResultBeaconchain(beaconChain, header)
|
|
if err != nil {
|
|
return network.EmptyPayout, errors.Wrapf(err, "shard 0 block %d reward error with bitmap %x", header.Number(), header.LastCommitBitmap())
|
|
}
|
|
subComm := shard.Committee{shard.BeaconChainShardID, members}
|
|
|
|
if err := availability.IncrementValidatorSigningCounts(
|
|
beaconChain,
|
|
subComm.StakedValidators(),
|
|
state,
|
|
payable,
|
|
missing,
|
|
); err != nil {
|
|
return network.EmptyPayout, err
|
|
}
|
|
votingPower, err := lookupVotingPower(
|
|
parentE, &subComm,
|
|
)
|
|
if err != nil {
|
|
return network.EmptyPayout, err
|
|
}
|
|
|
|
allSignersShare := numeric.ZeroDec()
|
|
for j := range payable {
|
|
voter := votingPower.Voters[payable[j].BLSPublicKey]
|
|
if !voter.IsHarmonyNode {
|
|
voterShare := voter.OverallPercent
|
|
allSignersShare = allSignersShare.Add(voterShare)
|
|
}
|
|
}
|
|
for beaconMember := range payable {
|
|
blsKey := payable[beaconMember].BLSPublicKey
|
|
voter := votingPower.Voters[blsKey]
|
|
if !voter.IsHarmonyNode {
|
|
snapshot, err := bc.ReadValidatorSnapshot(voter.EarningAccount)
|
|
if err != nil {
|
|
return network.EmptyPayout, err
|
|
}
|
|
due := defaultReward.Mul(
|
|
voter.OverallPercent.Quo(allSignersShare),
|
|
).RoundInt()
|
|
newRewards.Add(newRewards, due)
|
|
|
|
shares, err := lookupDelegatorShares(snapshot)
|
|
if err != nil {
|
|
return network.EmptyPayout, err
|
|
}
|
|
if err := state.AddReward(snapshot.Validator, due, shares); err != nil {
|
|
return network.EmptyPayout, err
|
|
}
|
|
payouts = append(payouts, reward.Payout{
|
|
Addr: voter.EarningAccount,
|
|
NewlyEarned: due,
|
|
EarningKey: voter.Identity,
|
|
})
|
|
}
|
|
}
|
|
utils.Logger().Debug().Int64("elapsed time", time.Now().Sub(startTime).Milliseconds()).Msg("Beacon Chain Reward")
|
|
|
|
return network.NewStakingEraRewardForRound(
|
|
newRewards, payouts,
|
|
), nil
|
|
}
|
|
|
|
func processOneCrossLink(bc engine.ChainReader, state *state.DB, cxLink types.CrossLink, defaultReward numeric.Dec, bucket int) ([]slotPayable, []slotMissing, error) {
|
|
epoch, shardID := cxLink.Epoch(), cxLink.ShardID()
|
|
if !bc.Config().IsStaking(epoch) {
|
|
return nil, nil, nil
|
|
}
|
|
startTimeLocal := time.Now()
|
|
shardState, err := bc.ReadShardState(epoch)
|
|
utils.Logger().Debug().Int64("elapsed time", time.Now().Sub(startTimeLocal).Milliseconds()).Msg("Shard Chain Reward (ReadShardState)")
|
|
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
subComm, err := shardState.FindCommitteeByID(shardID)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
startTimeLocal = time.Now()
|
|
payableSigners, missing, err := availability.BlockSigners(
|
|
cxLink.Bitmap(), subComm,
|
|
)
|
|
utils.Logger().Debug().Int64("elapsed time", time.Now().Sub(startTimeLocal).Milliseconds()).Msg("Shard Chain Reward (BlockSigners)")
|
|
|
|
if err != nil {
|
|
return nil, nil, errors.Wrapf(err, "shard %d block %d reward error with bitmap %x", shardID, cxLink.BlockNum(), cxLink.Bitmap())
|
|
}
|
|
|
|
staked := subComm.StakedValidators()
|
|
startTimeLocal = time.Now()
|
|
if err := availability.IncrementValidatorSigningCounts(
|
|
bc, staked, state, payableSigners, missing,
|
|
); err != nil {
|
|
return nil, nil, err
|
|
}
|
|
utils.Logger().Debug().Int64("elapsed time", time.Now().Sub(startTimeLocal).Milliseconds()).Msg("Shard Chain Reward (IncrementValidatorSigningCounts)")
|
|
|
|
startTimeLocal = time.Now()
|
|
votingPower, err := lookupVotingPower(
|
|
epoch, subComm,
|
|
)
|
|
utils.Logger().Debug().Int64("elapsed time", time.Now().Sub(startTimeLocal).Milliseconds()).Msg("Shard Chain Reward (lookupVotingPower)")
|
|
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
allSignersShare := numeric.ZeroDec()
|
|
for j := range payableSigners {
|
|
voter := votingPower.Voters[payableSigners[j].BLSPublicKey]
|
|
if !voter.IsHarmonyNode {
|
|
voterShare := voter.OverallPercent
|
|
allSignersShare = allSignersShare.Add(voterShare)
|
|
}
|
|
}
|
|
|
|
allPayables, allMissing := []slotPayable{}, []slotMissing{}
|
|
startTimeLocal = time.Now()
|
|
for j := range payableSigners {
|
|
voter := votingPower.Voters[payableSigners[j].BLSPublicKey]
|
|
if !voter.IsHarmonyNode && !voter.OverallPercent.IsZero() {
|
|
due := defaultReward.Mul(
|
|
voter.OverallPercent.Quo(allSignersShare),
|
|
)
|
|
allPayables = append(allPayables, slotPayable{
|
|
Slot: payableSigners[j],
|
|
payout: due.TruncateInt(),
|
|
bucket: bucket,
|
|
index: j,
|
|
shardID: shardID,
|
|
})
|
|
}
|
|
}
|
|
utils.Logger().Debug().Int64("elapsed time", time.Now().Sub(startTimeLocal).Milliseconds()).Msg("Shard Chain Reward (allPayables)")
|
|
|
|
for j := range missing {
|
|
allMissing = append(allMissing, slotMissing{
|
|
Slot: missing[j],
|
|
bucket: bucket,
|
|
index: j,
|
|
})
|
|
}
|
|
return allPayables, allMissing, nil
|
|
}
|
|
|