feat: add RPC to generate staker-operators data for previously calcul…

…ated rewards

go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/DataDog/datadog-go/v5 v5.5.0
 	github.com/Layr-Labs/eigenlayer-contracts v0.4.1-holesky-pepe.0.20240813143901-00fc4b95e9c1
 	github.com/Layr-Labs/eigenlayer-rewards-proofs v0.2.13
-	github.com/Layr-Labs/protocol-apis v0.1.0-beta.3.0.20241122223729-1734c60ac737
+	github.com/Layr-Labs/protocol-apis v0.1.0-beta.3.0.20241203214053-44b580f4ea84
 	github.com/ethereum/go-ethereum v1.14.9
 	github.com/gocarina/gocsv v0.0.0-20240520201108-78e41c74b4b1
 	github.com/google/uuid v1.6.0

go.sum

@@ -12,6 +12,12 @@ github.com/Layr-Labs/protocol-apis v0.1.0-beta.2 h1:AC79PMIDrhYtZV5HAoaDmvbiCD3i
 github.com/Layr-Labs/protocol-apis v0.1.0-beta.2/go.mod h1:prNA2/mLO5vpMZ2q78Nsn0m97wm28uiRnwO+/yOxigk=
 github.com/Layr-Labs/protocol-apis v0.1.0-beta.3.0.20241122223729-1734c60ac737 h1:I/0YAw2ue150YuLNavErIQ4t7yoTDuH3nqZkOS7RTjg=
 github.com/Layr-Labs/protocol-apis v0.1.0-beta.3.0.20241122223729-1734c60ac737/go.mod h1:prNA2/mLO5vpMZ2q78Nsn0m97wm28uiRnwO+/yOxigk=
+github.com/Layr-Labs/protocol-apis v0.1.0-beta.3.0.20241203213718-bda8083a30b9 h1:tvBtFPGqMw1Hwp++cGP/otFTC2OQrJMtVjkH/vNbttE=
+github.com/Layr-Labs/protocol-apis v0.1.0-beta.3.0.20241203213718-bda8083a30b9/go.mod h1:prNA2/mLO5vpMZ2q78Nsn0m97wm28uiRnwO+/yOxigk=
+github.com/Layr-Labs/protocol-apis v0.1.0-beta.3.0.20241203213920-e35bed7723dc h1:P7S3ijgAQ4Xdpdocfl7rGgaTsPAurHsSCYHfhWm9au4=
+github.com/Layr-Labs/protocol-apis v0.1.0-beta.3.0.20241203213920-e35bed7723dc/go.mod h1:prNA2/mLO5vpMZ2q78Nsn0m97wm28uiRnwO+/yOxigk=
+github.com/Layr-Labs/protocol-apis v0.1.0-beta.3.0.20241203214053-44b580f4ea84 h1:BLF8GHMmXSC1YtjlqBRC7pVBDVK0QwEJpwXYjZO7t1w=
+github.com/Layr-Labs/protocol-apis v0.1.0-beta.3.0.20241203214053-44b580f4ea84/go.mod h1:prNA2/mLO5vpMZ2q78Nsn0m97wm28uiRnwO+/yOxigk=
 github.com/Microsoft/go-winio v0.5.0/go.mod h1:JPGBdM1cNvN/6ISo+n8V5iA4v8pBzdOpzfwIujj1a84=
 github.com/Microsoft/go-winio v0.6.2 h1:F2VQgta7ecxGYO8k3ZZz3RS8fVIXVxONVUPlNERoyfY=
 github.com/Microsoft/go-winio v0.6.2/go.mod h1:yd8OoFMLzJbo9gZq8j5qaps8bJ9aShtEA8Ipt1oGCvU=

pkg/rewards/rewards.go

@@ -58,9 +58,9 @@ func (rc *RewardsCalculator) releaseGenerationLock() {
 	rc.isGenerating.Store(false)
 }
 
-type RewardsCalculationInProgressError struct{}
+type ErrRewardsCalculationInProgress struct{}
 
-func (e *RewardsCalculationInProgressError) Error() string {
+func (e *ErrRewardsCalculationInProgress) Error() string {
 	return "rewards calculation already in progress"
 }
 
@@ -71,7 +71,7 @@ func (e *RewardsCalculationInProgressError) Error() string {
 // If there is no previous DistributionRoot, the rewards are calculated from EigenLayer Genesis.
 func (rc *RewardsCalculator) calculateRewardsForSnapshotDate(snapshotDate string) error {
 	if rc.GetIsGenerating() {
-		err := &RewardsCalculationInProgressError{}
+		err := &ErrRewardsCalculationInProgress{}
 		rc.logger.Sugar().Infow(err.Error())
 		return err
 	}
@@ -136,7 +136,7 @@ func (rc *RewardsCalculator) CalculateRewardsForSnapshotDate(snapshotDate string
 	go func() {
 		for {
 			err := rc.calculateRewardsForSnapshotDate(snapshotDate)
-			if errors.Is(err, &RewardsCalculationInProgressError{}) {
+			if errors.Is(err, &ErrRewardsCalculationInProgress{}) {
 				rc.logger.Sugar().Infow("Rewards calculation already in progress, sleeping", zap.String("snapshotDate", snapshotDate))
 				time.Sleep(1 * time.Minute)
 			} else {
@@ -232,6 +232,57 @@ func (rc *RewardsCalculator) GetMaxSnapshotDateForCutoffDate(cutoffDate string)
 	return maxSnapshotStr, nil
 }
 
+// GenerateStakerOperatorsTableForPastSnapshot generates the staker operators table for a past snapshot date, OR
+// generates the rewards and the related staker-operator table data if the snapshot is greater than the latest snapshot.
+func (rc *RewardsCalculator) GenerateStakerOperatorsTableForPastSnapshot(cutoffDate string) error {
+	// find the first snapshot that is >= to the provided cutoff date
+	var generatedSnapshot storage.GeneratedRewardsSnapshots
+	query := `select * from generated_rewards_snapshots where snapshot_date >= ? order by snapshot_date asc limit 1`
+	res := rc.grm.Raw(query, cutoffDate).Scan(&generatedSnapshot)
+	if res.Error != nil && errors.Is(res.Error, gorm.ErrRecordNotFound) {
+		rc.logger.Sugar().Errorw("Failed to get generated snapshot", "error", res.Error)
+		return res.Error
+	}
+	if res.RowsAffected == 0 || errors.Is(res.Error, gorm.ErrRecordNotFound) {
+		rc.logger.Sugar().Infow("No snapshot found for cutoff date, rewards need to be calculated", "cutoffDate", cutoffDate)
+		return rc.CalculateRewardsForSnapshotDate(cutoffDate)
+	}
+
+	// since rewards are already calculated and the corresponding tables are tied to the snapshot date,
+	// we need to use the snapshot date from the generated snapshot to generate the staker operators table.
+	//
+	// Since this date is larger, and the insert into the staker-operators table discards duplicates,
+	// this should be safe to do.
+	cutoffDate = generatedSnapshot.SnapshotDate
+
+	// Since this was a previous calculation, we have the date-suffixed gold tables, but not necessarily the snapshot tables.
+	// In order for our calculations to work, we need to generate the snapshot tables for the cutoff date.
+	//
+	// First check to see if there is already a rewards generation in progress. If there is, return an error and let the caller try again.
+	if rc.GetIsGenerating() {
+		err := &ErrRewardsCalculationInProgress{}
+		rc.logger.Sugar().Infow(err.Error())
+		return err
+	}
+
+	// Acquire the generation lock and proceed with generating snapshot tables and then the staker operators table.
+	rc.acquireGenerationLock()
+	defer rc.releaseGenerationLock()
+
+	rc.logger.Sugar().Infow("Acquired rewards generation lock", "cutoffDate", cutoffDate)
+
+	if err := rc.generateSnapshotData(cutoffDate); err != nil {
+		rc.logger.Sugar().Errorw("Failed to generate snapshot data", "error", err)
+		return err
+	}
+
+	if err := rc.sog.GenerateStakerOperatorsTable(cutoffDate); err != nil {
+		rc.logger.Sugar().Errorw("Failed to generate staker operators table", "error", err)
+		return err
+	}
+	return nil
+}
+
 type Reward struct {
 	Earner           string
 	Token            string

pkg/rewards/rewards_test.go

@@ -388,7 +388,7 @@ func Test_RewardsCalculatorLock(t *testing.T) {
 	time.Sleep(1 * time.Second)
 	t.Logf("Attempting to calculate second rewards for snapshot date: 2024-08-02")
 	err = rc.calculateRewardsForSnapshotDate("2024-08-02")
-	assert.True(t, errors.Is(err, &RewardsCalculationInProgressError{}))
+	assert.True(t, errors.Is(err, &ErrRewardsCalculationInProgress{}))
 
 	t.Cleanup(func() {
 		postgres.TeardownTestDatabase(dbFileName, cfg, grm, l)

pkg/rpcServer/rewardsHandlers.go

@@ -2,7 +2,9 @@ package rpcServer
 
 import (
 	"context"
+	"errors"
 	sidecarV1 "github.com/Layr-Labs/protocol-apis/gen/protos/eigenlayer/sidecar/v1"
+	"github.com/Layr-Labs/sidecar/pkg/rewards"
 	"github.com/Layr-Labs/sidecar/pkg/utils"
 	"go.uber.org/zap"
 	"google.golang.org/grpc/codes"
@@ -78,6 +80,23 @@ func (rpc *RpcServer) GenerateRewardsRoot(ctx context.Context, req *sidecarV1.Ge
 	}, nil
 }
 
+func (rpc *RpcServer) GenerateStakerOperators(ctx context.Context, req *sidecarV1.GenerateStakerOperatorsRequest) (*sidecarV1.GenerateStakerOperatorsResponse, error) {
+	cutoffDate := req.GetCutoffDate()
+
+	if cutoffDate == "" {
+		return nil, status.Error(codes.InvalidArgument, "snapshot date is required")
+	}
+
+	err := rpc.rewardsCalculator.GenerateStakerOperatorsTableForPastSnapshot(cutoffDate)
+	if err != nil {
+		if errors.Is(err, &rewards.ErrRewardsCalculationInProgress{}) {
+			return nil, status.Error(codes.FailedPrecondition, err.Error())
+		}
+		return nil, status.Error(codes.Internal, err.Error())
+	}
+	return &sidecarV1.GenerateStakerOperatorsResponse{}, nil
+}
+
 func (rpc *RpcServer) GetRewardsForSnapshot(ctx context.Context, req *sidecarV1.GetRewardsForSnapshotRequest) (*sidecarV1.GetRewardsForSnapshotResponse, error) {
 	return nil, status.Error(codes.Unimplemented, "method GetRewardsForSnapshot not implemented")
 }