[rpc] Move lifetime outside of validator so always show APR (#2542)

Author: fxfactorial

Diff for: hmy/api_backend.go

@@ -22,6 +22,7 @@ import (
 	"github.com/harmony-one/harmony/core/vm"
 	internal_common "github.com/harmony-one/harmony/internal/common"
 	"github.com/harmony-one/harmony/internal/params"
+	"github.com/harmony-one/harmony/numeric"
 	"github.com/harmony-one/harmony/shard"
 	"github.com/harmony-one/harmony/shard/committee"
 	"github.com/harmony-one/harmony/staking/availability"
@@ -325,6 +326,10 @@ func (b *APIBackend) GetAllValidatorAddresses() []common.Address {
 	return b.hmy.BlockChain().ValidatorCandidates()
 }
 
+var (
+	zero = numeric.ZeroDec()
+)
+
 // GetValidatorInformation returns the information of validator
 func (b *APIBackend) GetValidatorInformation(
 	addr common.Address,
@@ -346,6 +351,11 @@ func (b *APIBackend) GetValidatorInformation(
 		EPoSStatus: effective.ValidatorStatus(
 			inCommittee, wrapper.Status == effective.Active,
 		).String(),
+		Lifetime: &staking.AccumulatedOverLifetime{
+			wrapper.BlockReward,
+			wrapper.Counters,
+			zero,
+		},
 	}
 
 	snapshot, err := b.hmy.BlockChain().ReadValidatorSnapshotAtEpoch(
@@ -366,6 +376,8 @@ func (b *APIBackend) GetValidatorInformation(
 		return defaultReply, nil
 	}
 
+	defaultReply.Lifetime.APR = stats.APR
+
 	if defaultReply.CurrentlyInCommittee {
 		defaultReply.Performance = &staking.CurrentEpochPerformance{
 			CurrentSigningPercentage: *computed,

Diff for: staking/types/validator.go

@@ -84,9 +84,9 @@ type ValidatorWrapper struct {
 	Validator
 	Delegations Delegations
 	//
-	Counters counters
+	Counters counters `json:"-"`
 	// All the rewarded accumulated so far
-	BlockReward *big.Int
+	BlockReward *big.Int `json:"-"`
 }
 
 // Computed represents current epoch
@@ -136,11 +136,14 @@ type ValidatorRPCEnchanced struct {
 	TotalDelegated       *big.Int                 `json:"total-delegation"`
 	CurrentlyInCommittee bool                     `json:"currently-in-committee"`
 	EPoSStatus           string                   `json:"epos-status"`
+	Lifetime             *AccumulatedOverLifetime `json:"lifetime"`
 }
 
-type accumulatedOverLifetime struct {
-	BlockReward *big.Int `json:"reward-accumulated"`
-	Signing     counters `json:"blocks"`
+// AccumulatedOverLifetime ..
+type AccumulatedOverLifetime struct {
+	BlockReward *big.Int    `json:"reward-accumulated"`
+	Signing     counters    `json:"blocks"`
+	APR         numeric.Dec `json:"apr"`
 }
 
 func (w ValidatorWrapper) String() string {
@@ -152,21 +155,19 @@ func (w ValidatorWrapper) String() string {
 func (w ValidatorWrapper) MarshalJSON() ([]byte, error) {
 	return json.Marshal(struct {
 		Validator
-		Address     string                  `json:"address"`
-		Delegations Delegations             `json:"delegations"`
-		Lifetime    accumulatedOverLifetime `json:"lifetime"`
+		Address     string      `json:"address"`
+		Delegations Delegations `json:"delegations"`
 	}{
 		w.Validator,
 		common2.MustAddressToBech32(w.Address),
 		w.Delegations,
-		accumulatedOverLifetime{w.BlockReward, w.Counters},
 	})
 }
 
 // ValidatorStats to record validator's performance and history records
 type ValidatorStats struct {
 	// APR ..
-	APR numeric.Dec `json:"current-apr"`
+	APR numeric.Dec `json:"-"`
 	// TotalEffectiveStake is the total effective stake this validator has
 	TotalEffectiveStake numeric.Dec `json:"total-effective-stake"`
 	// MetricsPerShard ..