[offchain][effective][validator][rpc] Give reason why booted from com…

…mitteee, move effective stake in rpc outside metrics (#2699)

core/blockchain.go

@@ -51,6 +51,8 @@ import (
 	"github.com/harmony-one/harmony/shard"
 	"github.com/harmony-one/harmony/shard/committee"
 	"github.com/harmony-one/harmony/staking/apr"
+	"github.com/harmony-one/harmony/staking/availability"
+	"github.com/harmony-one/harmony/staking/effective"
 	"github.com/harmony-one/harmony/staking/slash"
 	staking "github.com/harmony-one/harmony/staking/types"
 	lru "github.com/hashicorp/golang-lru"
@@ -2289,7 +2291,29 @@ func (bc *BlockChain) UpdateValidatorVotingPower(
 		return shard.ErrSuperCommitteeNil
 	}
 
-	rosters := make([]*votepower.Roster, len(newEpochSuperCommittee.Shards))
+	rosters, bootedFromSuperCommittee :=
+		make([]*votepower.Roster, len(newEpochSuperCommittee.Shards)),
+		map[common.Address]struct{}{}
+
+	existing, replacing :=
+		currentEpochSuperCommittee.StakedValidators(),
+		newEpochSuperCommittee.StakedValidators()
+
+	// TODO could also keep track of the BLS keys which
+	// lost a slot because just losing slots doesn't mean that the
+	// validator was booted, just that some of their keys lost slots
+
+	for currentValidator := range existing.LookupSet {
+		if _, keptSlot := replacing.LookupSet[currentValidator]; !keptSlot {
+			bootedFromSuperCommittee[currentValidator] = struct{}{}
+			// NOTE Think carefully about when time comes to delete offchain things
+			// TODO Someone: collect and then delete every 30 epochs
+			// rawdb.DeleteValidatorSnapshot(
+			// 	bc.db, currentValidator, currentEpochSuperCommittee.Epoch,
+			// )
+			// rawdb.DeleteValidatorStats(bc.db, currentValidator)
+		}
+	}
 
 	for i := range newEpochSuperCommittee.Shards {
 		subCommittee := &newEpochSuperCommittee.Shards[i]
@@ -2307,7 +2331,9 @@ func (bc *BlockChain) UpdateValidatorVotingPower(
 		}
 		rosters[i] = roster
 	}
+
 	networkWide := votepower.AggregateRosters(rosters)
+
 	for key, value := range networkWide {
 		stats, err := rawdb.ReadValidatorStats(bc.db, key)
 		if err != nil {
@@ -2347,44 +2373,54 @@ func (bc *BlockChain) UpdateValidatorVotingPower(
 			utils.Logger().Debug().Err(err).Msg("issue with compute of apr")
 		}
 
+		snapshot, err := bc.ReadValidatorSnapshotAtEpoch(
+			currentEpochSuperCommittee.Epoch, wrapper.Address,
+		)
+
+		if err != nil {
+			return err
+		}
+
+		computed := availability.ComputeCurrentSigning(snapshot, wrapper)
+
+		if _, wasBooted := bootedFromSuperCommittee[wrapper.Address]; wasBooted {
+			stats.BootedStatus = effective.LostEPoSAuction
+		}
+
+		if computed.IsBelowThreshold {
+			stats.BootedStatus = effective.InsufficientUptimeDuringEpoch
+		}
+
+		if slash.IsBanned(wrapper) {
+			stats.BootedStatus = effective.BannedForDoubleSigning
+		}
+
 		if err := rawdb.WriteValidatorStats(
 			batch, key, stats,
 		); err != nil {
 			return err
 		}
 	}
 
-	existing, replacing :=
-		currentEpochSuperCommittee.StakedValidators(),
-		newEpochSuperCommittee.StakedValidators()
-	for currentValidator := range existing.LookupSet {
-		if _, keptSlot := replacing.LookupSet[currentValidator]; !keptSlot {
-			// TODO Someone: collect and then delete every 30 epochs
-			// rawdb.DeleteValidatorSnapshot(
-			// 	bc.db, currentValidator, currentEpochSuperCommittee.Epoch,
-			// )
-			rawdb.DeleteValidatorStats(bc.db, currentValidator)
-		}
-	}
-
 	return nil
 }
 
 // deleteValidatorSnapshots deletes the snapshot staking information of given validator address
 // TODO: delete validator snapshots from X epochs ago
-func (bc *BlockChain) deleteValidatorSnapshots(addrs []common.Address) error {
-	batch := bc.db.NewBatch()
-	for i := range addrs {
-		rawdb.DeleteValidatorSnapshot(batch, addrs[i], bc.CurrentBlock().Epoch())
-	}
-	if err := batch.Write(); err != nil {
-		return err
-	}
-	for i := range addrs {
-		bc.validatorCache.Remove("validator-snapshot-" + string(addrs[i].Bytes()))
-	}
-	return nil
-}
+// NOTE Use when needed but don't compile at all until then
+// func (bc *BlockChain) deleteValidatorSnapshots(addrs []common.Address) error {
+// 	batch := bc.db.NewBatch()
+// 	for i := range addrs {
+// 		rawdb.DeleteValidatorSnapshot(batch, addrs[i], bc.CurrentBlock().Epoch())
+// 	}
+// 	if err := batch.Write(); err != nil {
+// 		return err
+// 	}
+// 	for i := range addrs {
+// 		bc.validatorCache.Remove("validator-snapshot-" + string(addrs[i].Bytes()))
+// 	}
+// 	return nil
+// }
 
 // UpdateValidatorSnapshots updates the content snapshot of all validators
 // Note: this should only be called within the blockchain insert process.

core/offchain.go

@@ -248,10 +248,13 @@ func (bc *BlockChain) CommitOffChainData(
 				addr  common.Address
 				stats *staking.ValidatorStats
 			}
-			sortedStats := []t{}
-			for key, value := range tempValidatorStats {
-				sortedStats = append(sortedStats, t{key, value})
+
+			sortedStats, i := make([]t, len(tempValidatorStats)), 0
+			for key := range tempValidatorStats {
+				sortedStats[i] = t{key, tempValidatorStats[key]}
+				i++
 			}
+
 			sort.SliceStable(
 				sortedStats,
 				func(i, j int) bool {

hmy/api_backend.go

@@ -366,6 +366,8 @@ func (b *APIBackend) GetValidatorInformation(
 		EPoSStatus: effective.ValidatorStatus(
 			inCommittee, wrapper.Status,
 		).String(),
+		EPoSWinningStake: nil,
+		BootedStatus:     nil,
 		Lifetime: &staking.AccumulatedOverLifetime{
 			wrapper.BlockReward,
 			wrapper.Counters,
@@ -384,7 +386,9 @@ func (b *APIBackend) GetValidatorInformation(
 	computed := availability.ComputeCurrentSigning(
 		snapshot, wrapper,
 	)
-	beaconChainBlocks := uint64(b.hmy.BeaconChain().CurrentBlock().Header().Number().Int64()) % shard.Schedule.BlocksPerEpoch()
+	beaconChainBlocks := uint64(
+		b.hmy.BeaconChain().CurrentBlock().Header().Number().Int64(),
+	) % shard.Schedule.BlocksPerEpoch()
 	computed.BlocksLeftInEpoch = shard.Schedule.BlocksPerEpoch() - beaconChainBlocks
 
 	stats, err := bc.ReadValidatorStats(addr)
@@ -399,6 +403,12 @@ func (b *APIBackend) GetValidatorInformation(
 			CurrentSigningPercentage: *computed,
 		}
 		defaultReply.ComputedMetrics = stats
+		defaultReply.EPoSWinningStake = &stats.TotalEffectiveStake
+	}
+
+	if !defaultReply.CurrentlyInCommittee {
+		reason := stats.BootedStatus.String()
+		defaultReply.BootedStatus = &reason
 	}
 
 	return defaultReply, nil

shard/shard_state.go

@@ -150,29 +150,28 @@ func EncodeWrapper(shardState State, isStaking bool) ([]byte, error) {
 	return data, err
 }
 
-// StakedSlots gives overview of subset of shard state that is
-// coming via an stake, that is, view epos
+// StakedSlots gives overview of members
+// in a subcommittee (aka a shard)
 type StakedSlots struct {
 	CountStakedValidator int
 	CountStakedBLSKey    int
 	Addrs                []common.Address
 	LookupSet            map[common.Address]struct{}
+	TotalEffectiveStaked numeric.Dec
 }
 
-// StakedValidators filters for non-harmony operated nodes,
-// returns (
-//   totalStakedValidatorsCount, totalStakedBLSKeys,
-//   addrsOnNetworkSlice, addrsOnNetworkSet,
-// )
+// StakedValidators ..
 func (c Committee) StakedValidators() *StakedSlots {
 	countStakedValidator, countStakedBLSKey := 0, 0
 	networkWideSlice, networkWideSet :=
 		[]common.Address{}, map[common.Address]struct{}{}
-	for _, slot := range c.Slots {
+	totalEffectiveStake := numeric.ZeroDec()
 
+	for _, slot := range c.Slots {
 		// an external validator,
 		// non-nil EffectiveStake is how we known
 		if addr := slot.EcdsaAddress; slot.EffectiveStake != nil {
+			totalEffectiveStake = totalEffectiveStake.Add(*slot.EffectiveStake)
 			countStakedBLSKey++
 			if _, seen := networkWideSet[addr]; !seen {
 				countStakedValidator++
@@ -187,20 +186,28 @@ func (c Committee) StakedValidators() *StakedSlots {
 		CountStakedBLSKey:    countStakedBLSKey,
 		Addrs:                networkWideSlice,
 		LookupSet:            networkWideSet,
+		TotalEffectiveStaked: totalEffectiveStake,
 	}
 }
 
-// StakedValidators filters for non-harmony operated nodes,
-// returns (
-//   totalStakedValidatorsCount, totalStakedBLSKeys,
-//   addrsOnNetworkSlice, addrsOnNetworkSet,
-// )
+// TODO refactor with and update corresponding places
+// func (ss *State) StakedValidators() []*StakedSlots {
+// 	networkWide := make([]*StakedSlots, len(ss.Shards))
+// 	for i := range ss.Shards {
+// 		networkWide[i] = ss.Shards[i].StakedValidators()
+// 	}
+// 	return networkWide
+// }
+
+// StakedValidators here is supercommittee wide
 func (ss *State) StakedValidators() *StakedSlots {
 	countStakedValidator, countStakedBLSKey := 0, 0
 	networkWideSlice, networkWideSet :=
 		[]common.Address{},
 		map[common.Address]struct{}{}
 
+	totalEffectiveStake := numeric.ZeroDec()
+
 	for i := range ss.Shards {
 		shard := ss.Shards[i]
 		for j := range shard.Slots {
@@ -209,6 +216,7 @@ func (ss *State) StakedValidators() *StakedSlots {
 			// an external validator,
 			// non-nil EffectiveStake is how we known
 			if addr := slot.EcdsaAddress; slot.EffectiveStake != nil {
+				totalEffectiveStake = totalEffectiveStake.Add(*slot.EffectiveStake)
 				countStakedBLSKey++
 				if _, seen := networkWideSet[addr]; !seen {
 					countStakedValidator++
@@ -224,6 +232,7 @@ func (ss *State) StakedValidators() *StakedSlots {
 		CountStakedBLSKey:    countStakedBLSKey,
 		Addrs:                networkWideSlice,
 		LookupSet:            networkWideSet,
+		TotalEffectiveStaked: totalEffectiveStake,
 	}
 }
 

staking/effective/calculate_test.go

@@ -19,7 +19,6 @@ const eposTestingFile = "epos.json"
 
 var (
 	testingNumber    = 20
-	testingSlots     slotsData
 	testingPurchases []SlotPurchase
 	expectedMedian   numeric.Dec
 	maxAccountGen    = int64(98765654323123134)

staking/effective/eligible.go

@@ -39,10 +39,14 @@ const (
 	Elected
 )
 
+const (
+	doubleSigningBanned = "banned forever from network because was caught double-signing"
+)
+
 func (c Candidacy) String() string {
 	switch c {
 	case ForeverBanned:
-		return "banned forever from network because was caught double-signing"
+		return doubleSigningBanned
 	case Candidate:
 		return "eligible to be elected next epoch"
 	case NotCandidate:
@@ -69,3 +73,30 @@ func ValidatorStatus(currentlyInCommittee bool, status Eligibility) Candidacy {
 		return Unknown
 	}
 }
+
+// BootedStatus ..
+type BootedStatus byte
+
+const (
+	// NotBooted ..
+	NotBooted BootedStatus = iota
+	// LostEPoSAuction ..
+	LostEPoSAuction
+	// InsufficientUptimeDuringEpoch ..
+	InsufficientUptimeDuringEpoch
+	// BannedForDoubleSigning ..
+	BannedForDoubleSigning
+)
+
+func (r BootedStatus) String() string {
+	switch r {
+	case LostEPoSAuction:
+		return "lost epos auction"
+	case InsufficientUptimeDuringEpoch:
+		return "bad uptime"
+	case BannedForDoubleSigning:
+		return doubleSigningBanned
+	default:
+		return "not booted"
+	}
+}

staking/slash/double-sign.go

@@ -482,6 +482,11 @@ func Apply(
 	return slashDiff, nil
 }
 
+// IsBanned ..
+func IsBanned(wrapper *staking.ValidatorWrapper) bool {
+	return wrapper.Status == effective.Banned
+}
+
 // Rate is the slashing % rate
 func Rate(votingPower *votepower.Roster, records Records) numeric.Dec {
 	rate := numeric.ZeroDec()

staking/types/validator.go

@@ -122,6 +122,7 @@ func NewEmptyStats() *ValidatorStats {
 		numeric.ZeroDec(),
 		numeric.ZeroDec(),
 		[]VoteWithCurrentEpochEarning{},
+		effective.NotBooted,
 	}
 }
 
@@ -139,6 +140,8 @@ type ValidatorRPCEnchanced struct {
 	TotalDelegated       *big.Int                 `json:"total-delegation"`
 	CurrentlyInCommittee bool                     `json:"currently-in-committee"`
 	EPoSStatus           string                   `json:"epos-status"`
+	EPoSWinningStake     *numeric.Dec             `json:"epos-winning-stake"`
+	BootedStatus         *string                  `json:"booted-status"`
 	Lifetime             *AccumulatedOverLifetime `json:"lifetime"`
 }
 
@@ -178,9 +181,11 @@ type ValidatorStats struct {
 	// APR ..
 	APR numeric.Dec `json:"-"`
 	// TotalEffectiveStake is the total effective stake this validator has
-	TotalEffectiveStake numeric.Dec `json:"total-effective-stake"`
+	TotalEffectiveStake numeric.Dec `json:"-"`
 	// MetricsPerShard ..
 	MetricsPerShard []VoteWithCurrentEpochEarning `json:"by-bls-key"`
+	// BootedStatus
+	BootedStatus effective.BootedStatus `json:"boot-from-committee-status"`
 }
 
 func (s ValidatorStats) String() string {