Allow custom epoch and status for multiple messages

.github/workflows/generic-testing.yml

@@ -66,7 +66,7 @@ jobs:
         run: |
           until $(docker compose -f "$GITHUB_WORKSPACE/stack-orchestrator/docker/local/docker-compose-ipld-eth-beacon-indexer.yml" --env-file ./config.sh cp ipld-eth-beacon-indexer:/root/HEALTH ./HEALTH) ; do sleep 10; done
           cat ./HEALTH
-          if [[ "$(cat ./HEALTH)" -eq "0" ]]; then echo "Application boot successful" && (exit 0); else docker compose -f "$GITHUB_WORKSPACE/stack-orchestrator/docker/local/docker-compose-ipld-eth-beacon-indexer.yml" cp ipld-eth-beacon-indexer:/root/ipld-eth-beacon-indexer.log . && cat ipld-eth-beacon-indexer.log && (exit 1); fi
+          if [[ "$(cat ./HEALTH)" -eq "0" ]]; then echo "Application boot successful" && (exit 0); else docker compose -f "$GITHUB_WORKSPACE/stack-orchestrator/docker/local/docker-compose-ipld-eth-beacon-indexer.yml" --env-file ./config.sh cp ipld-eth-beacon-indexer:/root/ipld-eth-beacon-indexer.log . && cat ipld-eth-beacon-indexer.log && (exit 1); fi
 
   unit-test:
     name: Run Unit Tests

Makefile

@@ -25,6 +25,7 @@ integration-test-ci:
 	go fmt ./...
 	$(GINKGO) -r --label-filter integration \
 	--procs=4 --compilers=4 \
+	--flake-attempts=3 \
 	--randomize-all --randomize-suites \
 	--fail-on-pending --keep-going \
 	--cover --coverprofile=cover.profile \
@@ -76,7 +77,7 @@ unit-test-ci:
 	go vet ./...
 	go fmt ./...
 	$(GINKGO) -r --label-filter unit \
-	--randomize-all --randomize-suites
+	--randomize-all --randomize-suites \
 	--flake-attempts=3 \
 	--fail-on-pending --keep-going \
 	--cover --coverprofile=cover.profile \
@@ -88,6 +89,7 @@ system-test-ci:
 	go fmt ./...
 	$(GINKGO) -r --label-filter system \
 	--randomize-all --randomize-suites \
+	--flake-attempts=3 \
 	--fail-on-pending --keep-going \
 	--cover --coverprofile=cover.profile \
 	--trace --json-report=report.json

cmd/capture.go

@@ -39,6 +39,7 @@ var (
 	bcConnectionProtocol       string
 	bcType                     string
 	bcMaxHistoricProcessWorker int
+	bcMaxHeadProcessWorker     int
 	bcUniqueNodeIdentifier     int
 	bcCheckDb                  bool
 	kgMaxWorker                int
@@ -96,7 +97,8 @@ func init() {
 	captureCmd.PersistentFlags().StringVarP(&bcConnectionProtocol, "bc.connectionProtocol", "", "http", "protocol for connecting to the beacon node.")
 	captureCmd.PersistentFlags().IntVarP(&bcBootRetryInterval, "bc.bootRetryInterval", "", 30, "The amount of time to wait between retries while booting the application")
 	captureCmd.PersistentFlags().IntVarP(&bcBootMaxRetry, "bc.bootMaxRetry", "", 5, "The amount of time to wait between retries while booting the application")
-	captureCmd.PersistentFlags().IntVarP(&bcMaxHistoricProcessWorker, "bc.maxHistoricProcessWorker", "", 30, "The number of workers that should be actively processing slots from the eth-beacon.historic_process table. Be careful of system memory.")
+	captureCmd.PersistentFlags().IntVarP(&bcMaxHistoricProcessWorker, "bc.maxHistoricProcessWorker", "", 3, "The number of workers that should be actively processing slots from the eth-beacon.historic_process table. Be careful of system memory.")
+	captureCmd.PersistentFlags().IntVarP(&bcMaxHeadProcessWorker, "bc.maxHeadProcessWorker", "", 3, "The number of workers that should be actively processing slots head slots. Be careful of system memory.")
 	captureCmd.PersistentFlags().IntVarP(&bcUniqueNodeIdentifier, "bc.uniqueNodeIdentifier", "", 0, "The unique identifier of this application. Each application connecting to the DB should have a unique identifier.")
 	captureCmd.PersistentFlags().BoolVarP(&bcCheckDb, "bc.checkDb", "", true, "Should we check to see if the slot exists in the DB before writing it?")
 	// err = captureCmd.MarkPersistentFlagRequired("bc.address")
@@ -107,7 +109,7 @@ func init() {
 	//// Known Gaps specific
 	captureCmd.PersistentFlags().BoolVarP(&kgProcessGaps, "kg.processKnownGaps", "", true, "Should we process the slots within the eth-beacon.known_gaps table.")
 	captureCmd.PersistentFlags().IntVarP(&kgTableIncrement, "kg.increment", "", 10000, "The max slots within a single entry to the known_gaps table.")
-	captureCmd.PersistentFlags().IntVarP(&kgMaxWorker, "kg.maxKnownGapsWorker", "", 30, "The number of workers that should be actively processing slots from the eth-beacon.known_gaps table. Be careful of system memory.")
+	captureCmd.PersistentFlags().IntVarP(&kgMaxWorker, "kg.maxKnownGapsWorker", "", 3, "The number of workers that should be actively processing slots from the eth-beacon.known_gaps table. Be careful of system memory.")
 
 	// Prometheus Specific
 	captureCmd.PersistentFlags().BoolVarP(&pmMetrics, "pm.metrics", "", true, "Should we capture prometheus metrics.")
@@ -157,6 +159,8 @@ func init() {
 	exitErr(err)
 	err = viper.BindPFlag("bc.maxHistoricProcessWorker", captureCmd.PersistentFlags().Lookup("bc.maxHistoricProcessWorker"))
 	exitErr(err)
+	err = viper.BindPFlag("bc.maxHeadProcessWorker", captureCmd.PersistentFlags().Lookup("bc.maxHeadProcessWorker"))
+	exitErr(err)
 	err = viper.BindPFlag("bc.uniqueNodeIdentifier", captureCmd.PersistentFlags().Lookup("bc.uniqueNodeIdentifier"))
 	exitErr(err)
 	err = viper.BindPFlag("bc.checkDb", captureCmd.PersistentFlags().Lookup("bc.checkDb"))

cmd/full.go

@@ -59,7 +59,7 @@ func init() {
 func startFullProcessing() {
 	// Boot the application
 	log.Info("Starting the application in head tracking mode.")
-	ctx := context.Background()
+	ctx, cancel := context.WithCancel(context.Background())
 
 	Bc, Db, err := boot.BootApplicationWithRetry(ctx, viper.GetString("db.address"), viper.GetInt("db.port"), viper.GetString("db.name"), viper.GetString("db.username"), viper.GetString("db.password"), viper.GetString("db.driver"),
 		viper.GetString("bc.address"), viper.GetInt("bc.port"), viper.GetString("bc.connectionProtocol"), viper.GetString("bc.type"), viper.GetInt("bc.bootRetryInterval"), viper.GetInt("bc.bootMaxRetry"),
@@ -75,13 +75,11 @@ func startFullProcessing() {
 
 	log.Info("The Beacon Client has booted successfully!")
 	// Capture head blocks
-	go Bc.CaptureHead()
+	go Bc.CaptureHead(ctx, viper.GetInt("bc.maxHeadProcessWorker"), false)
-
-	hpContext, hpCancel := context.WithCancel(context.Background())
 
 	errG, _ := errgroup.WithContext(context.Background())
 	errG.Go(func() error {
-		errs := Bc.CaptureHistoric(hpContext, viper.GetInt("bc.maxHistoricProcessWorker"))
+		errs := Bc.CaptureHistoric(ctx, viper.GetInt("bc.maxHistoricProcessWorker"))
 		if len(errs) != 0 {
 			if len(errs) != 0 {
 				log.WithFields(log.Fields{"errs": errs}).Error("All errors when processing historic events")
@@ -90,12 +88,11 @@ func startFullProcessing() {
 		}
 		return nil
 	})
-	kgCtx, KgCancel := context.WithCancel(context.Background())
 	if viper.GetBool("kg.processKnownGaps") {
 		go func() {
 			errG := new(errgroup.Group)
 			errG.Go(func() error {
-				errs := Bc.ProcessKnownGaps(kgCtx, viper.GetInt("kg.maxKnownGapsWorker"))
+				errs := Bc.ProcessKnownGaps(ctx, viper.GetInt("kg.maxKnownGapsWorker"))
 				if len(errs) != 0 {
 					log.WithFields(log.Fields{"errs": errs}).Error("All errors when processing knownGaps")
 					return fmt.Errorf("Application ended because there were too many error when attempting to process knownGaps")
@@ -115,7 +112,7 @@ func startFullProcessing() {
 	}
 
 	// Shutdown when the time is right.
-	err = shutdown.ShutdownFull(ctx, KgCancel, hpCancel, notifierCh, maxWaitSecondsShutdown, Db, Bc)
+	err = shutdown.ShutdownFull(ctx, cancel, notifierCh, maxWaitSecondsShutdown, Db, Bc)
 	if err != nil {
 		loghelper.LogError(err).Error("Ungracefully Shutdown ipld-eth-beacon-indexer!")
 	} else {

cmd/head.go

@@ -46,7 +46,7 @@ var headCmd = &cobra.Command{
 func startHeadTracking() {
 	// Boot the application
 	log.Info("Starting the application in head tracking mode.")
-	ctx := context.Background()
+	ctx, cancel := context.WithCancel(context.Background())
 
 	Bc, Db, err := boot.BootApplicationWithRetry(ctx, viper.GetString("db.address"), viper.GetInt("db.port"), viper.GetString("db.name"), viper.GetString("db.username"), viper.GetString("db.password"), viper.GetString("db.driver"),
 		viper.GetString("bc.address"), viper.GetInt("bc.port"), viper.GetString("bc.connectionProtocol"), viper.GetString("bc.type"), viper.GetInt("bc.bootRetryInterval"), viper.GetInt("bc.bootMaxRetry"),
@@ -62,13 +62,13 @@ func startHeadTracking() {
 
 	log.Info("The Beacon Client has booted successfully!")
 	// Capture head blocks
-	go Bc.CaptureHead()
+	go Bc.CaptureHead(ctx, viper.GetInt("bc.maxHeadProcessWorker"), false)
-	kgCtx, KgCancel := context.WithCancel(context.Background())
+
 	if viper.GetBool("kg.processKnownGaps") {
 		go func() {
 			errG := new(errgroup.Group)
 			errG.Go(func() error {
-				errs := Bc.ProcessKnownGaps(kgCtx, viper.GetInt("kg.maxKnownGapsWorker"))
+				errs := Bc.ProcessKnownGaps(ctx, viper.GetInt("kg.maxKnownGapsWorker"))
 				if len(errs) != 0 {
 					log.WithFields(log.Fields{"errs": errs}).Error("All errors when processing knownGaps")
 					return fmt.Errorf("Application ended because there were too many error when attempting to process knownGaps")
@@ -88,13 +88,12 @@ func startHeadTracking() {
 	}
 
 	// Shutdown when the time is right.
-	err = shutdown.ShutdownHeadTracking(ctx, KgCancel, notifierCh, maxWaitSecondsShutdown, Db, Bc)
+	err = shutdown.ShutdownHeadTracking(ctx, cancel, notifierCh, maxWaitSecondsShutdown, Db, Bc)
 	if err != nil {
 		loghelper.LogError(err).Error("Ungracefully Shutdown ipld-eth-beacon-indexer!")
 	} else {
 		log.Info("Gracefully shutdown ipld-eth-beacon-indexer")
 	}
-
 }
 
 func init() {

cmd/historic.go

@@ -49,7 +49,7 @@ var historicCmd = &cobra.Command{
 func startHistoricProcessing() {
 	// Boot the application
 	log.Info("Starting the application in head tracking mode.")
-	ctx := context.Background()
+	ctx, cancel := context.WithCancel(context.Background())
 
 	Bc, Db, err := boot.BootApplicationWithRetry(ctx, viper.GetString("db.address"), viper.GetInt("db.port"), viper.GetString("db.name"), viper.GetString("db.username"), viper.GetString("db.password"), viper.GetString("db.driver"),
 		viper.GetString("bc.address"), viper.GetInt("bc.port"), viper.GetString("bc.connectionProtocol"), viper.GetString("bc.type"), viper.GetInt("bc.bootRetryInterval"), viper.GetInt("bc.bootMaxRetry"),
@@ -63,11 +63,9 @@ func startHistoricProcessing() {
 		serveProm(addr)
 	}
 
-	hpContext, hpCancel := context.WithCancel(context.Background())
-
 	errG, _ := errgroup.WithContext(context.Background())
 	errG.Go(func() error {
-		errs := Bc.CaptureHistoric(hpContext, viper.GetInt("bc.maxHistoricProcessWorker"))
+		errs := Bc.CaptureHistoric(ctx, viper.GetInt("bc.maxHistoricProcessWorker"))
 		if len(errs) != 0 {
 			if len(errs) != 0 {
 				log.WithFields(log.Fields{"errs": errs}).Error("All errors when processing historic events")
@@ -77,12 +75,11 @@ func startHistoricProcessing() {
 		return nil
 	})
 
-	kgContext, kgCancel := context.WithCancel(context.Background())
 	if viper.GetBool("kg.processKnownGaps") {
 		go func() {
 			errG := new(errgroup.Group)
 			errG.Go(func() error {
-				errs := Bc.ProcessKnownGaps(kgContext, viper.GetInt("kg.maxKnownGapsWorker"))
+				errs := Bc.ProcessKnownGaps(ctx, viper.GetInt("kg.maxKnownGapsWorker"))
 				if len(errs) != 0 {
 					log.WithFields(log.Fields{"errs": errs}).Error("All errors when processing knownGaps")
 					return fmt.Errorf("Application ended because there were too many error when attempting to process knownGaps")
@@ -102,7 +99,7 @@ func startHistoricProcessing() {
 	}
 
 	// Shutdown when the time is right.
-	err = shutdown.ShutdownHistoricProcessing(ctx, kgCancel, hpCancel, notifierCh, maxWaitSecondsShutdown, Db, Bc)
+	err = shutdown.ShutdownHistoricProcessing(ctx, cancel, notifierCh, maxWaitSecondsShutdown, Db, Bc)
 	if err != nil {
 		loghelper.LogError(err).Error("Ungracefully Shutdown ipld-eth-beacon-indexer!")
 	} else {

go.mod

@@ -70,6 +70,7 @@ require (
 	github.com/urfave/cli/v2 v2.3.0 // indirect
 	go.opencensus.io v0.23.0 // indirect
 	go.uber.org/atomic v1.9.0 // indirect
+	go.uber.org/goleak v1.1.12 // indirect
 	go.uber.org/multierr v1.8.0 // indirect
 	go.uber.org/zap v1.21.0 // indirect
 	golang.org/x/crypto v0.0.0-20220427172511-eb4f295cb31f // indirect

go.sum

@@ -833,8 +833,9 @@ go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
 go.uber.org/atomic v1.9.0 h1:ECmE8Bn/WFTYwEW/bpKD3M8VtR/zQVbavAoalC1PYyE=
 go.uber.org/atomic v1.9.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
 go.uber.org/goleak v1.1.11-0.20210813005559-691160354723/go.mod h1:cwTWslyiVhfpKIDGSZEM2HlOvcqm+tG4zioyIeLoqMQ=
-go.uber.org/goleak v1.1.11 h1:wy28qYRKZgnJTxGxvye5/wgWr1EKjmUDGYox5mGlRlI=
 go.uber.org/goleak v1.1.11/go.mod h1:cwTWslyiVhfpKIDGSZEM2HlOvcqm+tG4zioyIeLoqMQ=
+go.uber.org/goleak v1.1.12 h1:gZAh5/EyT/HQwlpkCy6wTpqfH9H8Lz8zbm3dZh+OyzA=
+go.uber.org/goleak v1.1.12/go.mod h1:cwTWslyiVhfpKIDGSZEM2HlOvcqm+tG4zioyIeLoqMQ=
 go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
 go.uber.org/multierr v1.3.0/go.mod h1:VgVr7evmIr6uPjLBxg28wmKNXyqE9akIJ5XnfpiKl+4=
 go.uber.org/multierr v1.5.0/go.mod h1:FeouvMocqHpRaaGuG9EjoKcStLC43Zu/fmqdUMPcKYU=

internal/shutdown/shutdown.go

@@ -40,68 +40,66 @@ func ShutdownServices(ctx context.Context, notifierCh chan os.Signal, waitTime t
 }
 
 // Wrapper function for shutting down the head tracking process.
-func ShutdownHeadTracking(ctx context.Context, kgCancel context.CancelFunc, notifierCh chan os.Signal, waitTime time.Duration, DB sql.Database, BC *beaconclient.BeaconClient) error {
+func ShutdownHeadTracking(ctx context.Context, cancel context.CancelFunc, notifierCh chan os.Signal, waitTime time.Duration, DB sql.Database, BC *beaconclient.BeaconClient) error {
 	return ShutdownServices(ctx, notifierCh, waitTime, DB, BC, map[string]gracefulshutdown.Operation{
 		// Combining DB shutdown with BC because BC needs DB open to cleanly shutdown.
 		"beaconClient": func(ctx context.Context) error {
 			defer DB.Close()
-			err := BC.StopHeadTracking()
+			cancel()
-			if err != nil {
+			BC.StopHeadTracking(ctx, false)
-				loghelper.LogError(err).Error("Unable to trigger shutdown of head tracking")
-			}
 			if BC.KnownGapsProcess != (beaconclient.KnownGapsProcessing{}) {
-				err = BC.StopKnownGapsProcessing(kgCancel)
+				err := BC.StopKnownGapsProcessing(ctx)
 				if err != nil {
 					loghelper.LogError(err).Error("Unable to stop processing known gaps")
+					return err
 				}
 			}
-			return err
+			return nil
 		},
 	})
 }
 
 // Wrapper function for shutting down the head tracking process.
-func ShutdownHistoricProcessing(ctx context.Context, kgCancel, hpCancel context.CancelFunc, notifierCh chan os.Signal, waitTime time.Duration, DB sql.Database, BC *beaconclient.BeaconClient) error {
+func ShutdownHistoricProcessing(ctx context.Context, cancel context.CancelFunc, notifierCh chan os.Signal, waitTime time.Duration, DB sql.Database, BC *beaconclient.BeaconClient) error {
 	return ShutdownServices(ctx, notifierCh, waitTime, DB, BC, map[string]gracefulshutdown.Operation{
 		// Combining DB shutdown with BC because BC needs DB open to cleanly shutdown.
 		"beaconClient": func(ctx context.Context) error {
 			defer DB.Close()
-			err := BC.StopHistoric(hpCancel)
+			cancel()
+			err := BC.StopHistoricProcess(ctx)
 			if err != nil {
 				loghelper.LogError(err).Error("Unable to stop processing historic")
 			}
 			if BC.KnownGapsProcess != (beaconclient.KnownGapsProcessing{}) {
-				err = BC.StopKnownGapsProcessing(kgCancel)
+				err = BC.StopKnownGapsProcessing(ctx)
 				if err != nil {
 					loghelper.LogError(err).Error("Unable to stop processing known gaps")
+					return err
 				}
 			}
-			return err
+			return nil
 		},
 	})
 }
 
 // Shutdown the head and historical processing
-func ShutdownFull(ctx context.Context, kgCancel, hpCancel context.CancelFunc, notifierCh chan os.Signal, waitTime time.Duration, DB sql.Database, BC *beaconclient.BeaconClient) error {
+func ShutdownFull(ctx context.Context, cancel context.CancelFunc, notifierCh chan os.Signal, waitTime time.Duration, DB sql.Database, BC *beaconclient.BeaconClient) error {
 	return ShutdownServices(ctx, notifierCh, waitTime, DB, BC, map[string]gracefulshutdown.Operation{
 		// Combining DB shutdown with BC because BC needs DB open to cleanly shutdown.
 		"beaconClient": func(ctx context.Context) error {
 			defer DB.Close()
-			err := BC.StopHistoric(hpCancel)
+			cancel()
+			err := BC.StopHistoricProcess(ctx)
 			if err != nil {
 				loghelper.LogError(err).Error("Unable to stop processing historic")
 			}
 			if BC.KnownGapsProcess != (beaconclient.KnownGapsProcessing{}) {
-				err = BC.StopKnownGapsProcessing(kgCancel)
+				err = BC.StopKnownGapsProcessing(ctx)
 				if err != nil {
 					loghelper.LogError(err).Error("Unable to stop processing known gaps")
 				}
 			}
-			err = BC.StopHeadTracking()
+			BC.StopHeadTracking(ctx, false)
-			if err != nil {
-				loghelper.LogError(err).Error("Unable to trigger shutdown of head tracking")
-			}
-
 			return err
 		},
 	})

internal/shutdown/shutdown_test.go

@@ -56,23 +56,23 @@ var (
 	BC                     *beaconclient.BeaconClient
 	err                    error
 	ctx                    context.Context
+	cancel                 context.CancelFunc
 	notifierCh             chan os.Signal
 )
 
 var _ = Describe("Shutdown", func() {
 	BeforeEach(func() {
-		ctx = context.Background()
+		ctx, cancel = context.WithCancel(context.Background())
 		BC, DB, err = boot.BootApplicationWithRetry(ctx, dbAddress, dbPort, dbName, dbUsername, dbPassword, dbDriver, bcAddress,
 			bcPort, bcConnectionProtocol, bcType, bcBootRetryInterval, bcBootMaxRetry, bcKgTableIncrement, "head", true, bcUniqueIdentifier, bcCheckDb)
 		notifierCh = make(chan os.Signal, 1)
 		Expect(err).To(BeNil())
 	})
 
-	Describe("Run Shutdown Function for head tracking,", Label("integration"), func() {
+	Describe("Run Shutdown Function for head tracking,", Label("integration", "shutdown"), func() {
 		Context("When Channels are empty,", func() {
 			It("Should Shutdown Successfully.", func() {
 				go func() {
-					_, cancel := context.WithCancel(context.Background())
 					log.Debug("Starting shutdown chan")
 					err = shutdown.ShutdownHeadTracking(ctx, cancel, notifierCh, maxWaitSecondsShutdown, DB, BC)
 					log.Debug("We have completed the shutdown...")
@@ -85,7 +85,6 @@ var _ = Describe("Shutdown", func() {
 				shutdownCh := make(chan bool)
 				//log.SetLevel(log.DebugLevel)
 				go func() {
-					_, cancel := context.WithCancel(context.Background())
 					log.Debug("Starting shutdown chan")
 					err = shutdown.ShutdownHeadTracking(ctx, cancel, notifierCh, maxWaitSecondsShutdown, DB, BC)
 					log.Debug("We have completed the shutdown...")
@@ -120,7 +119,6 @@ var _ = Describe("Shutdown", func() {
 				//log.SetLevel(log.DebugLevel)
 				go func() {
 					log.Debug("Starting shutdown chan")
-					_, cancel := context.WithCancel(context.Background())
 					err = shutdown.ShutdownHeadTracking(ctx, cancel, notifierCh, maxWaitSecondsShutdown, DB, BC)
 					log.Debug("We have completed the shutdown...")
 					Expect(err).To(MatchError(gracefulshutdown.TimeoutErr(maxWaitSecondsShutdown.String())))

pkg/beaconclient/beaconclient.go

@@ -76,8 +76,8 @@ type BeaconClient struct {
 type SseEvents[P ProcessedEvents] struct {
 	Endpoint   string          // The endpoint for the subscription. Primarily used for logging
 	MessagesCh chan *sse.Event // Contains all the messages from the SSE Channel
-	ErrorCh    chan *SseError  // Contains any errors while SSE streaming occurred
+	ErrorCh    chan SseError   // Contains any errors while SSE streaming occurred
-	ProcessCh  chan *P         // Used to capture processed data in its proper struct.
+	ProcessCh  chan P          // Used to capture processed data in its proper struct.
 	SseClient  *sse.Client     // sse.Client object that is used to interact with the SSE stream
 }
 
@@ -119,9 +119,9 @@ func createSseEvent[P ProcessedEvents](baseEndpoint string, path string) *SseEve
 	endpoint := baseEndpoint + path
 	sseEvents := &SseEvents[P]{
 		Endpoint:   endpoint,
-		MessagesCh: make(chan *sse.Event, 1),
+		MessagesCh: make(chan *sse.Event),
-		ErrorCh:    make(chan *SseError),
+		ErrorCh:    make(chan SseError),
-		ProcessCh:  make(chan *P),
+		ProcessCh:  make(chan P, 10),
 		SseClient: func(endpoint string) *sse.Client {
 			log.WithFields(log.Fields{"endpoint": endpoint}).Info("Creating SSE client")
 			return sse.NewClient(endpoint)

pkg/beaconclient/capturehead.go

@@ -18,42 +18,32 @@
 package beaconclient
 
 import (
-	"time"
+	"context"
 
 	log "github.com/sirupsen/logrus"
-	"github.com/vulcanize/ipld-eth-beacon-indexer/pkg/loghelper"
 )
 
 // This function will perform all the heavy lifting for tracking the head of the chain.
-func (bc *BeaconClient) CaptureHead() {
+func (bc *BeaconClient) CaptureHead(ctx context.Context, maxHeadWorkers int, skipSee bool) {
 	log.Info("We are tracking the head of the chain.")
-	go bc.handleHead()
+	go bc.handleHead(ctx, maxHeadWorkers)
-	go bc.handleReorg()
+	go bc.handleReorg(ctx)
-	bc.captureEventTopic()
+	bc.captureEventTopic(ctx, skipSee)
 }
 
 // Stop the head tracking service.
-func (bc *BeaconClient) StopHeadTracking() error {
+func (bc *BeaconClient) StopHeadTracking(ctx context.Context, skipSee bool) {
-	log.Info("We are going to stop tracking the head of chain because of the shutdown signal.")
+	select {
-	chHead := make(chan bool)
+	case <-ctx.Done():
-	chReorg := make(chan bool)
+		if !skipSee {
-
+			bc.HeadTracking.SseClient.Unsubscribe(bc.HeadTracking.MessagesCh)
-	go bc.HeadTracking.finishProcessingChannel(chHead)
+			bc.ReOrgTracking.SseClient.Unsubscribe(bc.ReOrgTracking.MessagesCh)
-	go bc.ReOrgTracking.finishProcessingChannel(chReorg)
+			log.Info("Successfully unsubscribed to SSE client")
-
+			close(bc.ReOrgTracking.MessagesCh)
-	<-chHead
+			close(bc.HeadTracking.MessagesCh)
-	<-chReorg
+		}
-	log.Info("Successfully stopped the head tracking service.")
+		log.Info("Successfully stopped the head tracking service.")
-	return nil
+	default:
-}
+		log.Error("The context has not completed....")
-
-// This function closes the SSE subscription, but waits until the MessagesCh is empty
-func (se *SseEvents[ProcessedEvents]) finishProcessingChannel(finish chan<- bool) {
-	loghelper.LogEndpoint(se.Endpoint).Info("Received a close event.")
-	se.SseClient.Unsubscribe(se.MessagesCh)
-	for len(se.MessagesCh) != 0 || len(se.ProcessCh) != 0 {
-		time.Sleep(time.Duration(shutdownWaitInterval) * time.Millisecond)
 	}
-	loghelper.LogEndpoint(se.Endpoint).Info("Done processing all messages, ready for shutdown")
-	finish <- true
 }

pkg/beaconclient/capturehead_test.go

@@ -23,6 +23,7 @@ import (
 	"net/http"
 	"os"
 	"path/filepath"
+	"runtime"
 	"strconv"
 	"sync/atomic"
 	"time"
@@ -265,70 +266,121 @@ var _ = Describe("Capturehead", Label("head"), func() {
 
 	Describe("Receiving New Head SSE messages", Label("unit", "behavioral"), func() {
 		Context("Correctly formatted Phase0 Block", func() {
-			It("Should turn it into a struct successfully.", func() {
+			It("Should process it successfully.", func() {
-				bc := setUpTest(BeaconNodeTester.TestConfig, "99")
 				BeaconNodeTester.SetupBeaconNodeMock(BeaconNodeTester.TestEvents, BeaconNodeTester.TestConfig.protocol, BeaconNodeTester.TestConfig.address, BeaconNodeTester.TestConfig.port, BeaconNodeTester.TestConfig.dummyParentRoot)
 				defer httpmock.DeactivateAndReset()
-				BeaconNodeTester.testProcessBlock(bc, BeaconNodeTester.TestEvents["100"].HeadMessage, 3, maxRetry, 1, 0, 0)
+				bc := setUpTest(BeaconNodeTester.TestConfig, "99")
+
+				BeaconNodeTester.testProcessBlock(bc, maxRetry, 1, 0, 0, headBlocksSent{
+					head:          BeaconNodeTester.TestEvents["100"].HeadMessage,
+					expectedEpoch: 3,
+					expectStatus:  "proposed",
+				})
 				validateSignedBeaconBlock(bc, BeaconNodeTester.TestEvents["100"].HeadMessage, BeaconNodeTester.TestEvents["100"].CorrectParentRoot, BeaconNodeTester.TestEvents["100"].CorrectEth1BlockHash, BeaconNodeTester.TestEvents["100"].CorrectSignedBeaconBlockMhKey)
 				validateBeaconState(bc, BeaconNodeTester.TestEvents["100"].HeadMessage, BeaconNodeTester.TestEvents["100"].CorrectBeaconStateMhKey)
 
 			})
 		})
-		Context("Correctly formatted Altair Block", func() {
+		Context("Correctly formatted Altair Block", Label("leak-head"), func() {
-			It("Should turn it into a struct successfully.", func() {
+			It("Should process it successfully.", func() {
-				bc := setUpTest(BeaconNodeTester.TestConfig, "2375702")
+				log.SetLevel(log.DebugLevel)
 				BeaconNodeTester.SetupBeaconNodeMock(BeaconNodeTester.TestEvents, BeaconNodeTester.TestConfig.protocol, BeaconNodeTester.TestConfig.address, BeaconNodeTester.TestConfig.port, BeaconNodeTester.TestConfig.dummyParentRoot)
 				defer httpmock.DeactivateAndReset()
-				BeaconNodeTester.testProcessBlock(bc, BeaconNodeTester.TestEvents["2375703"].HeadMessage, 74240, maxRetry, 1, 0, 0)
+
+				bc := setUpTest(BeaconNodeTester.TestConfig, "2375702")
+				BeaconNodeTester.testProcessBlock(bc, maxRetry, 1, 0, 0, headBlocksSent{
+					head:          BeaconNodeTester.TestEvents["2375703"].HeadMessage,
+					expectedEpoch: 74240,
+					expectStatus:  "proposed",
+				})
 				validateSignedBeaconBlock(bc, BeaconNodeTester.TestEvents["2375703"].HeadMessage, BeaconNodeTester.TestEvents["2375703"].CorrectParentRoot, BeaconNodeTester.TestEvents["2375703"].CorrectEth1BlockHash, BeaconNodeTester.TestEvents["2375703"].CorrectSignedBeaconBlockMhKey)
 				validateBeaconState(bc, BeaconNodeTester.TestEvents["2375703"].HeadMessage, BeaconNodeTester.TestEvents["2375703"].CorrectBeaconStateMhKey)
 			})
 		})
-		Context("Correctly formatted Altair Test Blocks", func() {
+		Context("Correctly formatted Altair Test Blocks", Label("correct-test-altairs"), func() {
 			It("Should turn it into a struct successfully.", func() {
-				bc := setUpTest(BeaconNodeTester.TestConfig, "2375702")
 				BeaconNodeTester.SetupBeaconNodeMock(BeaconNodeTester.TestEvents, BeaconNodeTester.TestConfig.protocol, BeaconNodeTester.TestConfig.address, BeaconNodeTester.TestConfig.port, BeaconNodeTester.TestConfig.dummyParentRoot)
 				defer httpmock.DeactivateAndReset()
-				BeaconNodeTester.testProcessBlock(bc, BeaconNodeTester.TestEvents["2375703-dummy"].HeadMessage, 74240, maxRetry, 1, 0, 0)
+
+				bc := setUpTest(BeaconNodeTester.TestConfig, "2375702")
+				BeaconNodeTester.testProcessBlock(bc, maxRetry, 1, 0, 0, headBlocksSent{
+					head:          BeaconNodeTester.TestEvents["2375703-dummy"].HeadMessage,
+					expectedEpoch: 74240,
+					expectStatus:  "proposed",
+				})
 
 				bc = setUpTest(BeaconNodeTester.TestConfig, "2375702")
-				BeaconNodeTester.SetupBeaconNodeMock(BeaconNodeTester.TestEvents, BeaconNodeTester.TestConfig.protocol, BeaconNodeTester.TestConfig.address, BeaconNodeTester.TestConfig.port, BeaconNodeTester.TestConfig.dummyParentRoot)
+				BeaconNodeTester.testProcessBlock(bc, maxRetry, 1, 0, 0, headBlocksSent{
-				defer httpmock.DeactivateAndReset()
+					head:          BeaconNodeTester.TestEvents["2375703-dummy-2"].HeadMessage,
-				BeaconNodeTester.testProcessBlock(bc, BeaconNodeTester.TestEvents["2375703-dummy-2"].HeadMessage, 74240, maxRetry, 1, 0, 0)
+					expectedEpoch: 74240,
+					expectStatus:  "proposed",
+				})
 
 			})
 		})
-		Context("Correctly formatted Phase0 Test Blocks", func() {
+		Context("Correctly formatted Phase0 Test Blocks", Label("correct-test-phase0"), func() {
 			It("Should turn it into a struct successfully.", func() {
-				bc := setUpTest(BeaconNodeTester.TestConfig, "99")
 				BeaconNodeTester.SetupBeaconNodeMock(BeaconNodeTester.TestEvents, BeaconNodeTester.TestConfig.protocol, BeaconNodeTester.TestConfig.address, BeaconNodeTester.TestConfig.port, BeaconNodeTester.TestConfig.dummyParentRoot)
 				defer httpmock.DeactivateAndReset()
-				BeaconNodeTester.testProcessBlock(bc, BeaconNodeTester.TestEvents["100-dummy"].HeadMessage, 3, maxRetry, 1, 0, 0)
+
+				bc := setUpTest(BeaconNodeTester.TestConfig, "99")
+				BeaconNodeTester.testProcessBlock(bc, maxRetry, 1, 0, 0, headBlocksSent{
+					head:          BeaconNodeTester.TestEvents["100-dummy"].HeadMessage,
+					expectedEpoch: 3,
+					expectStatus:  "proposed",
+				})
 
 				bc = setUpTest(BeaconNodeTester.TestConfig, "99")
-				BeaconNodeTester.SetupBeaconNodeMock(BeaconNodeTester.TestEvents, BeaconNodeTester.TestConfig.protocol, BeaconNodeTester.TestConfig.address, BeaconNodeTester.TestConfig.port, BeaconNodeTester.TestConfig.dummyParentRoot)
+				BeaconNodeTester.testProcessBlock(bc, maxRetry, 1, 0, 0, headBlocksSent{
-				defer httpmock.DeactivateAndReset()
+					head:          BeaconNodeTester.TestEvents["100-dummy-2"].HeadMessage,
-				BeaconNodeTester.testProcessBlock(bc, BeaconNodeTester.TestEvents["100-dummy-2"].HeadMessage, 3, maxRetry, 1, 0, 0)
+					expectedEpoch: 3,
+					expectStatus:  "proposed",
+				})
+
+				//bc = setUpTest(BeaconNodeTester.TestConfig, "99")
+				//BeaconNodeTester.SetupBeaconNodeMock(BeaconNodeTester.TestEvents, BeaconNodeTester.TestConfig.protocol, BeaconNodeTester.TestConfig.address, BeaconNodeTester.TestConfig.port, BeaconNodeTester.TestConfig.dummyParentRoot)
+				//defer httpmock.DeactivateAndReset()
+				//BeaconNodeTester.testProcessBlock(bc, BeaconNodeTester.TestEvents["100-dummy-2"].HeadMessage, 3, maxRetry, 1, 0, 0)
+
 			})
 
 		})
-		Context("Two consecutive correct blocks", func() {
+		Context("Two consecutive correct blocks", Label("bug"), func() {
 			It("Should handle both blocks correctly, without any reorgs or known_gaps", func() {
-				bc := setUpTest(BeaconNodeTester.TestConfig, "99")
 				BeaconNodeTester.SetupBeaconNodeMock(BeaconNodeTester.TestEvents, BeaconNodeTester.TestConfig.protocol, BeaconNodeTester.TestConfig.address, BeaconNodeTester.TestConfig.port, BeaconNodeTester.TestConfig.dummyParentRoot)
 				defer httpmock.DeactivateAndReset()
-				BeaconNodeTester.testProcessBlock(bc, BeaconNodeTester.TestEvents["100"].HeadMessage, 3, maxRetry, 1, 0, 0)
+
-				BeaconNodeTester.testProcessBlock(bc, BeaconNodeTester.TestEvents["101"].HeadMessage, 3, maxRetry, 1, 0, 0)
+				bc := setUpTest(BeaconNodeTester.TestConfig, "99")
+				BeaconNodeTester.testProcessBlock(bc, maxRetry, 2, 0, 0, headBlocksSent{
+					head:          BeaconNodeTester.TestEvents["100"].HeadMessage,
+					expectedEpoch: 3,
+					expectStatus:  "proposed",
+				}, headBlocksSent{
+					head:          BeaconNodeTester.TestEvents["101"].HeadMessage,
+					expectedEpoch: 3,
+					expectStatus:  "proposed",
+				})
+
 			})
 		})
-		Context("Two consecutive blocks with a bad parent", func() {
+		Context("Two consecutive blocks with a bad parent", Label("bad-parent"), func() {
 			It("Should add the previous block to the knownGaps table.", func() {
-				bc := setUpTest(BeaconNodeTester.TestConfig, "99")
 				BeaconNodeTester.SetupBeaconNodeMock(BeaconNodeTester.TestEvents, BeaconNodeTester.TestConfig.protocol, BeaconNodeTester.TestConfig.address, BeaconNodeTester.TestConfig.port, BeaconNodeTester.TestConfig.dummyParentRoot)
 				defer httpmock.DeactivateAndReset()
-				BeaconNodeTester.testProcessBlock(bc, BeaconNodeTester.TestEvents["100-dummy"].HeadMessage, 3, maxRetry, 1, 0, 0)
+
-				BeaconNodeTester.testProcessBlock(bc, BeaconNodeTester.TestEvents["101"].HeadMessage, 3, maxRetry, 1, 1, 1)
+				bc := setUpTest(BeaconNodeTester.TestConfig, "99")
+				BeaconNodeTester.testProcessBlock(bc, maxRetry, 2, 1, 1,
+					headBlocksSent{
+						head:          BeaconNodeTester.TestEvents["100-dummy"].HeadMessage,
+						expectedEpoch: 3,
+						expectStatus:  "forked",
+					},
+					headBlocksSent{
+						head:          BeaconNodeTester.TestEvents["101"].HeadMessage,
+						expectedEpoch: 3,
+						expectStatus:  "proposed",
+					})
+
 			})
 		})
 		Context("Phase 0: We have a correctly formated SSZ SignedBeaconBlock and BeaconState", func() {
@@ -348,10 +400,15 @@ var _ = Describe("Capturehead", Label("head"), func() {
 		//})
 		Context("When the proper SSZ objects are not served", func() {
 			It("Should return an error, and add the slot to the knownGaps table.", func() {
-				bc := setUpTest(BeaconNodeTester.TestConfig, "101")
 				BeaconNodeTester.SetupBeaconNodeMock(BeaconNodeTester.TestEvents, BeaconNodeTester.TestConfig.protocol, BeaconNodeTester.TestConfig.address, BeaconNodeTester.TestConfig.port, BeaconNodeTester.TestConfig.dummyParentRoot)
 				defer httpmock.DeactivateAndReset()
-				BeaconNodeTester.testProcessBlock(bc, BeaconNodeTester.TestEvents["102-wrong-ssz-1"].HeadMessage, 3, maxRetry, 0, 1, 0)
+
+				bc := setUpTest(BeaconNodeTester.TestConfig, "101")
+				BeaconNodeTester.testProcessBlock(bc, maxRetry, 0, 1, 0, headBlocksSent{
+					head:          BeaconNodeTester.TestEvents["102-wrong-ssz-1"].HeadMessage,
+					expectedEpoch: 3,
+					expectStatus:  "proposed",
+				})
 
 				knownGapCount := countKnownGapsTable(bc.Db)
 				Expect(knownGapCount).To(Equal(1))
@@ -359,6 +416,7 @@ var _ = Describe("Capturehead", Label("head"), func() {
 				start, end := queryKnownGaps(bc.Db, "102", "102")
 				Expect(start).To(Equal(102))
 				Expect(end).To(Equal(102))
+
 			})
 		})
 	})
@@ -366,9 +424,10 @@ var _ = Describe("Capturehead", Label("head"), func() {
 	Describe("Known Gaps Scenario", Label("unit", "behavioral"), func() {
 		Context("There is a gap at start up within one incrementing range.", func() {
 			It("Should add only a single entry to the knownGaps table.", func() {
-				bc := setUpTest(BeaconNodeTester.TestConfig, "10")
 				BeaconNodeTester.SetupBeaconNodeMock(BeaconNodeTester.TestEvents, BeaconNodeTester.TestConfig.protocol, BeaconNodeTester.TestConfig.address, BeaconNodeTester.TestConfig.port, BeaconNodeTester.TestConfig.dummyParentRoot)
 				defer httpmock.DeactivateAndReset()
+
+				bc := setUpTest(BeaconNodeTester.TestConfig, "10")
 				BeaconNodeTester.testKnownGapsMessages(bc, 100, 1, maxRetry, BeaconNodeTester.TestEvents["100"].HeadMessage)
 				start, end := queryKnownGaps(bc.Db, "11", "99")
 				Expect(start).To(Equal(11))
@@ -377,9 +436,10 @@ var _ = Describe("Capturehead", Label("head"), func() {
 		})
 		Context("There is a gap at start up spanning multiple incrementing range.", func() {
 			It("Should add multiple entries to the knownGaps table.", func() {
-				bc := setUpTest(BeaconNodeTester.TestConfig, "5")
 				BeaconNodeTester.SetupBeaconNodeMock(BeaconNodeTester.TestEvents, BeaconNodeTester.TestConfig.protocol, BeaconNodeTester.TestConfig.address, BeaconNodeTester.TestConfig.port, BeaconNodeTester.TestConfig.dummyParentRoot)
 				defer httpmock.DeactivateAndReset()
+
+				bc := setUpTest(BeaconNodeTester.TestConfig, "5")
 				BeaconNodeTester.testKnownGapsMessages(bc, 10, 10, maxRetry, BeaconNodeTester.TestEvents["100"].HeadMessage)
 
 				start, end := queryKnownGaps(bc.Db, "6", "16")
@@ -391,11 +451,12 @@ var _ = Describe("Capturehead", Label("head"), func() {
 				Expect(end).To(Equal(99))
 			})
 		})
-		Context("Gaps between two head messages", func() {
+		Context("Gaps between two head messages", Label("gap-head"), func() {
 			It("Should add the slots in-between", func() {
-				bc := setUpTest(BeaconNodeTester.TestConfig, "99")
 				BeaconNodeTester.SetupBeaconNodeMock(BeaconNodeTester.TestEvents, BeaconNodeTester.TestConfig.protocol, BeaconNodeTester.TestConfig.address, BeaconNodeTester.TestConfig.port, BeaconNodeTester.TestConfig.dummyParentRoot)
 				defer httpmock.DeactivateAndReset()
+
+				bc := setUpTest(BeaconNodeTester.TestConfig, "99")
 				BeaconNodeTester.testKnownGapsMessages(bc, 1000000, 3, maxRetry, BeaconNodeTester.TestEvents["100"].HeadMessage, BeaconNodeTester.TestEvents["2375703"].HeadMessage)
 
 				start, end := queryKnownGaps(bc.Db, "101", "1000101")
@@ -412,33 +473,37 @@ var _ = Describe("Capturehead", Label("head"), func() {
 	Describe("ReOrg Scenario", Label("unit", "behavioral"), func() {
 		Context("Altair: Multiple head messages for the same slot.", func() {
 			It("The previous block should be marked as 'forked', the new block should be the only one marked as 'proposed'.", func() {
-				bc := setUpTest(BeaconNodeTester.TestConfig, "2375702")
 				BeaconNodeTester.SetupBeaconNodeMock(BeaconNodeTester.TestEvents, BeaconNodeTester.TestConfig.protocol, BeaconNodeTester.TestConfig.address, BeaconNodeTester.TestConfig.port, BeaconNodeTester.TestConfig.dummyParentRoot)
 				defer httpmock.DeactivateAndReset()
+
+				bc := setUpTest(BeaconNodeTester.TestConfig, "2375702")
 				BeaconNodeTester.testMultipleHead(bc, TestEvents["2375703"].HeadMessage, TestEvents["2375703-dummy"].HeadMessage, 74240, maxRetry)
 			})
 		})
 		Context("Phase0: Multiple head messages for the same slot.", func() {
 			It("The previous block should be marked as 'forked', the new block should be the only one marked as 'proposed'.", func() {
-				bc := setUpTest(BeaconNodeTester.TestConfig, "99")
 				BeaconNodeTester.SetupBeaconNodeMock(BeaconNodeTester.TestEvents, BeaconNodeTester.TestConfig.protocol, BeaconNodeTester.TestConfig.address, BeaconNodeTester.TestConfig.port, BeaconNodeTester.TestConfig.dummyParentRoot)
 				defer httpmock.DeactivateAndReset()
+
+				bc := setUpTest(BeaconNodeTester.TestConfig, "99")
 				BeaconNodeTester.testMultipleHead(bc, TestEvents["100-dummy"].HeadMessage, TestEvents["100"].HeadMessage, 3, maxRetry)
 			})
 		})
 		Context("Phase 0: Multiple reorgs have occurred on this slot", func() {
 			It("The previous blocks should be marked as 'forked', the new block should be the only one marked as 'proposed'.", func() {
-				bc := setUpTest(BeaconNodeTester.TestConfig, "99")
 				BeaconNodeTester.SetupBeaconNodeMock(BeaconNodeTester.TestEvents, BeaconNodeTester.TestConfig.protocol, BeaconNodeTester.TestConfig.address, BeaconNodeTester.TestConfig.port, BeaconNodeTester.TestConfig.dummyParentRoot)
 				defer httpmock.DeactivateAndReset()
+
+				bc := setUpTest(BeaconNodeTester.TestConfig, "99")
 				BeaconNodeTester.testMultipleReorgs(bc, TestEvents["100-dummy"].HeadMessage, TestEvents["100-dummy-2"].HeadMessage, TestEvents["100"].HeadMessage, 3, maxRetry)
 			})
 		})
 		Context("Altair: Multiple reorgs have occurred on this slot", func() {
 			It("The previous blocks should be marked as 'forked', the new block should be the only one marked as 'proposed'.", func() {
-				bc := setUpTest(BeaconNodeTester.TestConfig, "2375702")
 				BeaconNodeTester.SetupBeaconNodeMock(BeaconNodeTester.TestEvents, BeaconNodeTester.TestConfig.protocol, BeaconNodeTester.TestConfig.address, BeaconNodeTester.TestConfig.port, BeaconNodeTester.TestConfig.dummyParentRoot)
 				defer httpmock.DeactivateAndReset()
+
+				bc := setUpTest(BeaconNodeTester.TestConfig, "2375702")
 				BeaconNodeTester.testMultipleReorgs(bc, TestEvents["2375703-dummy"].HeadMessage, TestEvents["2375703-dummy-2"].HeadMessage, TestEvents["2375703"].HeadMessage, 74240, maxRetry)
 			})
 		})
@@ -523,18 +588,25 @@ func validateBeaconState(bc *beaconclient.BeaconClient, headMessage beaconclient
 }
 
 // Wrapper function to send a head message to the beaconclient
-func sendHeadMessage(bc *beaconclient.BeaconClient, head beaconclient.Head, maxRetry int, expectedSuccessfulInserts uint64) {
+func sendHeadMessage(bc *beaconclient.BeaconClient, maxRetry int, expectedSuccessfulInserts uint64, head ...beaconclient.Head) {
-
-	data, err := json.Marshal(head)
-	Expect(err).ToNot(HaveOccurred())
 
+	var (
+		data []byte
+		err  error
+	)
 	startInserts := atomic.LoadUint64(&bc.Metrics.SlotInserts)
-	bc.HeadTracking.MessagesCh <- &sse.Event{
+	for _, ms := range head {
-		ID:    []byte{},
+		data, err = json.Marshal(ms)
-		Data:  data,
+		Expect(err).ToNot(HaveOccurred())
-		Event: []byte{},
+		time.Sleep(1 * time.Second)
-		Retry: []byte{},
+		bc.HeadTracking.MessagesCh <- &sse.Event{
+			ID:    []byte{},
+			Data:  data,
+			Event: []byte{},
+			Retry: []byte{},
+		}
 	}
+
 	curRetry := 0
 	for atomic.LoadUint64(&bc.Metrics.SlotInserts) != startInserts+expectedSuccessfulInserts {
 		time.Sleep(1 * time.Second)
@@ -832,13 +904,13 @@ func (tbc TestBeaconNode) provideSsz(slotIdentifier string, sszIdentifier string
 // Helper function to test three reorg messages. There are going to be many functions like this,
 // Because we need to test the same logic for multiple phases.
 func (tbc TestBeaconNode) testMultipleReorgs(bc *beaconclient.BeaconClient, firstHead beaconclient.Head, secondHead beaconclient.Head, thirdHead beaconclient.Head, epoch int, maxRetry int) {
-	go bc.CaptureHead()
+	startGoRoutines := runtime.NumGoroutine()
+	ctx, cancel := context.WithCancel(context.Background())
+	go bc.CaptureHead(ctx, 2, true)
 	time.Sleep(1 * time.Second)
 
 	log.Info("Sending Messages to BeaconClient")
-	sendHeadMessage(bc, firstHead, maxRetry, 1)
+	sendHeadMessage(bc, maxRetry, 3, firstHead, secondHead, thirdHead)
-	sendHeadMessage(bc, secondHead, maxRetry, 1)
-	sendHeadMessage(bc, thirdHead, maxRetry, 1)
 
 	curRetry := 0
 	for atomic.LoadUint64(&bc.Metrics.ReorgInserts) != 2 {
@@ -890,13 +962,22 @@ func (tbc TestBeaconNode) testMultipleReorgs(bc *beaconclient.BeaconClient, firs
 	validateSlot(bc, secondHead, epoch, "proposed")
 	validateSlot(bc, thirdHead, epoch, "forked")
 
+	cancel()
+	testStopHeadTracking(ctx, bc, startGoRoutines, true)
 }
 
 // A test to validate a single block was processed correctly
-func (tbc TestBeaconNode) testProcessBlock(bc *beaconclient.BeaconClient, head beaconclient.Head, epoch int, maxRetry int, expectedSuccessInsert uint64, expectedKnownGaps uint64, expectedReorgs uint64) {
+func (tbc TestBeaconNode) testProcessBlock(bc *beaconclient.BeaconClient, maxRetry int, expectedSuccessInsert uint64, expectedKnownGaps uint64, expectedReorgs uint64, head ...headBlocksSent) {
-	go bc.CaptureHead()
+	//pprof.Lookup("goroutine").WriteTo(os.Stdout, 1)
+	startGoRoutines := runtime.NumGoroutine()
+	ctx, cancel := context.WithCancel(context.Background())
+	go bc.CaptureHead(ctx, 2, true)
 	time.Sleep(1 * time.Second)
-	sendHeadMessage(bc, head, maxRetry, expectedSuccessInsert)
+	heads := make([]beaconclient.Head, 0)
+	for _, msgs := range head {
+		heads = append(heads, msgs.head)
+	}
+	sendHeadMessage(bc, maxRetry, expectedSuccessInsert, heads...)
 
 	curRetry := 0
 	for atomic.LoadUint64(&bc.Metrics.KnownGapsInserts) != expectedKnownGaps {
@@ -912,23 +993,28 @@ func (tbc TestBeaconNode) testProcessBlock(bc *beaconclient.BeaconClient, head b
 		time.Sleep(1 * time.Second)
 		curRetry = curRetry + 1
 		if curRetry == maxRetry {
-			Fail(fmt.Sprintf("Wrong reorg metrics, got: %d, wanted %d", bc.Metrics.KnownGapsInserts, expectedKnownGaps))
+			Fail(fmt.Sprintf("Wrong reorg metrics, got: %d, wanted %d", bc.Metrics.ReorgInserts, expectedReorgs))
 		}
 	}
 
 	if expectedSuccessInsert > 0 {
-		validateSlot(bc, head, epoch, "proposed")
+		for _, msg := range head {
+			validateSlot(bc, msg.head, msg.expectedEpoch, msg.expectStatus)
+		}
 	}
+	cancel()
+	testStopHeadTracking(ctx, bc, startGoRoutines, true)
 }
 
 // A test that ensures that if two HeadMessages occur for a single slot they are marked
 // as proposed and forked correctly.
 func (tbc TestBeaconNode) testMultipleHead(bc *beaconclient.BeaconClient, firstHead beaconclient.Head, secondHead beaconclient.Head, epoch int, maxRetry int) {
-	go bc.CaptureHead()
+	startGoRoutines := runtime.NumGoroutine()
+	ctx, cancel := context.WithCancel(context.Background())
+	go bc.CaptureHead(ctx, 2, true)
 	time.Sleep(1 * time.Second)
 
-	sendHeadMessage(bc, firstHead, maxRetry, 1)
+	sendHeadMessage(bc, maxRetry, 2, firstHead, secondHead)
-	sendHeadMessage(bc, secondHead, maxRetry, 1)
 
 	curRetry := 0
 	for atomic.LoadUint64(&bc.Metrics.ReorgInserts) != 1 {
@@ -946,18 +1032,22 @@ func (tbc TestBeaconNode) testMultipleHead(bc *beaconclient.BeaconClient, firstH
 	log.Info("Checking Altair to make sure the fork was marked properly.")
 	validateSlot(bc, firstHead, epoch, "forked")
 	validateSlot(bc, secondHead, epoch, "proposed")
+	cancel()
+	testStopHeadTracking(ctx, bc, startGoRoutines, true)
 }
 
 // A test that ensures that if two HeadMessages occur for a single slot they are marked
 // as proposed and forked correctly.
 func (tbc TestBeaconNode) testKnownGapsMessages(bc *beaconclient.BeaconClient, tableIncrement int, expectedEntries uint64, maxRetry int, msg ...beaconclient.Head) {
 	bc.KnownGapTableIncrement = tableIncrement
-	go bc.CaptureHead()
+
+	//pprof.Lookup("goroutine").WriteTo(os.Stdout, 1)
+	startGoRoutines := runtime.NumGoroutine()
+	ctx, cancel := context.WithCancel(context.Background())
+	go bc.CaptureHead(ctx, 2, true)
 	time.Sleep(1 * time.Second)
 
-	for _, headMsg := range msg {
+	sendHeadMessage(bc, maxRetry, 1, msg...)
-		sendHeadMessage(bc, headMsg, maxRetry, 1)
-	}
 
 	curRetry := 0
 	for atomic.LoadUint64(&bc.Metrics.KnownGapsInserts) != expectedEntries {
@@ -975,6 +1065,8 @@ func (tbc TestBeaconNode) testKnownGapsMessages(bc *beaconclient.BeaconClient, t
 	if atomic.LoadUint64(&bc.Metrics.ReorgInserts) != 0 {
 		Fail("We found reorgs when we didn't expect it")
 	}
+	cancel()
+	testStopHeadTracking(ctx, bc, startGoRoutines, true)
 }
 
 // This function will make sure we are properly able to get the SszRoot of the SignedBeaconBlock and the BeaconState.
@@ -991,3 +1083,22 @@ func testSszRoot(msg Message) {
 	Expect(err).ToNot(HaveOccurred())
 	Expect(msg.HeadMessage.Block).To(Equal("0x" + hex.EncodeToString(blockRoot[:])))
 }
+
+// A make shift function to stop head tracking and insure we dont have any goroutine leaks
+func testStopHeadTracking(ctx context.Context, bc *beaconclient.BeaconClient, startGoRoutines int, skipSse bool) {
+	bc.StopHeadTracking(ctx, skipSse)
+
+	time.Sleep(3 * time.Second)
+	endNum := runtime.NumGoroutine()
+	//pprof.Lookup("goroutine").WriteTo(os.Stdout, 1)
+	log.WithField("startNum", startGoRoutines).Info("Start Go routine number")
+	log.WithField("endNum", endNum).Info("End Go routine number")
+	//Expect(endNum <= startGoRoutines).To(BeTrue())
+	Expect(endNum).To(Equal(startGoRoutines))
+}
+
+type headBlocksSent struct {
+	head          beaconclient.Head
+	expectedEpoch int
+	expectStatus  string
+}

pkg/beaconclient/capturehistoric.go

@@ -37,14 +37,18 @@ func (bc *BeaconClient) CaptureHistoric(ctx context.Context, maxWorkers int) []e
 }
 
 // This function will perform all the necessary clean up tasks for stopping historical processing.
-func (bc *BeaconClient) StopHistoric(cancel context.CancelFunc) error {
+func (bc *BeaconClient) StopHistoricProcess(ctx context.Context) error {
-	log.Info("We are stopping the historical processing service.")
+	select {
-	cancel()
+	case <-ctx.Done():
-	err := bc.HistoricalProcess.releaseDbLocks()
+		log.Info("We are stopping the historical processing service.")
-	if err != nil {
+		err := bc.HistoricalProcess.releaseDbLocks()
-		loghelper.LogError(err).WithField("uniqueIdentifier", bc.UniqueNodeIdentifier).Error("We were unable to remove the locks from the eth_beacon.historic_processing table. Manual Intervention is needed!")
+		if err != nil {
+			loghelper.LogError(err).WithField("uniqueIdentifier", bc.UniqueNodeIdentifier).Error("We were unable to remove the locks from the eth_beacon.historic_processing table. Manual Intervention is needed!")
+		}
+		return nil
+	default:
+		return fmt.Errorf("Tried to stop historic before the context ended...")
 	}
-	return nil
 }
 
 // An interface to enforce any batch processing. Currently there are two use cases for this.
@@ -93,9 +97,9 @@ type batchHistoricError struct {
 // 5. Handle any errors.
 func handleBatchProcess(ctx context.Context, maxWorkers int, bp BatchProcessing, db sql.Database, serverEndpoint string, metrics *BeaconClientMetrics, checkDb bool, incrementTracker func(uint64)) []error {
 	slotsCh := make(chan slotsToProcess)
-	workCh := make(chan int)
+	workCh := make(chan int, 5)
-	processedCh := make(chan slotsToProcess)
+	processedCh := make(chan slotsToProcess, 5)
-	errCh := make(chan batchHistoricError)
+	errCh := make(chan batchHistoricError, 5)
 	finalErrCh := make(chan []error, 1)
 
 	// Checkout Rows with same node Identifier.
@@ -116,6 +120,8 @@ func handleBatchProcess(ctx context.Context, maxWorkers int, bp BatchProcessing,
 		for {
 			select {
 			case <-ctx.Done():
+				close(workCh)
+				close(processedCh)
 				return
 			case slots := <-slotsCh:
 				if slots.startSlot > slots.endSlot {
@@ -164,8 +170,9 @@ func handleBatchProcess(ctx context.Context, maxWorkers int, bp BatchProcessing,
 		errs := bp.getSlotRange(ctx, slotsCh) // Periodically adds new entries....
 		if errs != nil {
 			finalErrCh <- errs
+		} else {
+			finalErrCh <- nil
 		}
-		finalErrCh <- nil
 		log.Debug("We are stopping the processing of adding new entries")
 	}()
 	log.Debug("Waiting for shutdown signal from channel")

pkg/beaconclient/capturehistoric_test.go

@@ -3,6 +3,7 @@ package beaconclient_test
 import (
 	"context"
 	"fmt"
+	"runtime"
 	"sync/atomic"
 	"time"
 
@@ -24,17 +25,18 @@ var _ = Describe("Capturehistoric", func() {
 	Describe("Run the application in historic mode", Label("unit", "behavioral", "historical"), func() {
 		Context("Phase0 + Altairs: When we need to process a multiple blocks in a multiple entries in the eth_beacon.historic_process table.", Label("deb"), func() {
 			It("Successfully Process the Blocks", func() {
-				bc := setUpTest(BeaconNodeTester.TestConfig, "99")
 				BeaconNodeTester.SetupBeaconNodeMock(BeaconNodeTester.TestEvents, BeaconNodeTester.TestConfig.protocol, BeaconNodeTester.TestConfig.address, BeaconNodeTester.TestConfig.port, BeaconNodeTester.TestConfig.dummyParentRoot)
 				defer httpmock.DeactivateAndReset()
+
+				bc := setUpTest(BeaconNodeTester.TestConfig, "99")
 				BeaconNodeTester.writeEventToHistoricProcess(bc, 100, 101, 10)
 				BeaconNodeTester.runHistoricalProcess(bc, 2, 2, 0, 0, 0)
 				// Run Two seperate processes
 				BeaconNodeTester.writeEventToHistoricProcess(bc, 2375703, 2375703, 10)
 				BeaconNodeTester.runHistoricalProcess(bc, 2, 3, 0, 0, 0)
 
-				time.Sleep(2 * time.Second)
 				validatePopularBatchBlocks(bc)
+
 			})
 		})
 		Context("When the start block is greater than the endBlock", func() {
@@ -70,11 +72,12 @@ var _ = Describe("Capturehistoric", func() {
 		})
 	})
 	Describe("Running the Application to process Known Gaps", Label("unit", "behavioral", "knownGaps"), func() {
-		Context("Phase0 + Altairs: When we need to process a multiple blocks in a multiple entries in the eth_beacon.known_gaps table.", func() {
+		Context("Phase0 + Altairs: When we need to process a multiple blocks in a multiple entries in the eth_beacon.known_gaps table.", Label("leak"), func() {
 			It("Successfully Process the Blocks", func() {
-				bc := setUpTest(BeaconNodeTester.TestConfig, "99")
 				BeaconNodeTester.SetupBeaconNodeMock(BeaconNodeTester.TestEvents, BeaconNodeTester.TestConfig.protocol, BeaconNodeTester.TestConfig.address, BeaconNodeTester.TestConfig.port, BeaconNodeTester.TestConfig.dummyParentRoot)
 				defer httpmock.DeactivateAndReset()
+
+				bc := setUpTest(BeaconNodeTester.TestConfig, "99")
 				BeaconNodeTester.writeEventToKnownGaps(bc, 100, 101)
 				BeaconNodeTester.runKnownGapsProcess(bc, 2, 2, 0, 0, 0)
 				// Run Two seperate processes
@@ -83,6 +86,7 @@ var _ = Describe("Capturehistoric", func() {
 
 				time.Sleep(2 * time.Second)
 				validatePopularBatchBlocks(bc)
+
 			})
 		})
 		Context("When the start block is greater than the endBlock", func() {
@@ -107,13 +111,18 @@ var _ = Describe("Capturehistoric", func() {
 		})
 	})
 	Describe("Running the application in Historic, Head, and KnownGaps mode", Label("unit", "historical", "full"), func() {
-		Context("When it recieves a head, historic and known Gaps message (in order)", func() {
+		Context("When it recieves a head, historic and known Gaps message (in order)", Label("deb"), func() {
 			It("Should process them all successfully.", func() {
-				bc := setUpTest(BeaconNodeTester.TestConfig, "2375702")
 				BeaconNodeTester.SetupBeaconNodeMock(BeaconNodeTester.TestEvents, BeaconNodeTester.TestConfig.protocol, BeaconNodeTester.TestConfig.address, BeaconNodeTester.TestConfig.port, BeaconNodeTester.TestConfig.dummyParentRoot)
 				defer httpmock.DeactivateAndReset()
+
+				bc := setUpTest(BeaconNodeTester.TestConfig, "2375702")
 				// Head
-				BeaconNodeTester.testProcessBlock(bc, BeaconNodeTester.TestEvents["2375703"].HeadMessage, 74240, maxRetry, 1, 0, 0)
+				BeaconNodeTester.testProcessBlock(bc, maxRetry, 1, 0, 0, headBlocksSent{
+					head:          BeaconNodeTester.TestEvents["2375703"].HeadMessage,
+					expectedEpoch: 74240,
+					expectStatus:  "proposed",
+				})
 
 				// Historical
 				BeaconNodeTester.writeEventToHistoricProcess(bc, 100, 100, 10)
@@ -125,19 +134,25 @@ var _ = Describe("Capturehistoric", func() {
 
 				time.Sleep(2 * time.Second)
 				validatePopularBatchBlocks(bc)
+
 			})
 		})
 		Context("When it recieves a historic, head and known Gaps message (in order)", func() {
 			It("Should process them all successfully.", func() {
-				bc := setUpTest(BeaconNodeTester.TestConfig, "2375702")
 				BeaconNodeTester.SetupBeaconNodeMock(BeaconNodeTester.TestEvents, BeaconNodeTester.TestConfig.protocol, BeaconNodeTester.TestConfig.address, BeaconNodeTester.TestConfig.port, BeaconNodeTester.TestConfig.dummyParentRoot)
 				defer httpmock.DeactivateAndReset()
+
+				bc := setUpTest(BeaconNodeTester.TestConfig, "2375702")
 				// Historical
 				BeaconNodeTester.writeEventToHistoricProcess(bc, 100, 100, 10)
 				BeaconNodeTester.runHistoricalProcess(bc, 2, 1, 0, 0, 0)
 
 				// Head
-				BeaconNodeTester.testProcessBlock(bc, BeaconNodeTester.TestEvents["2375703"].HeadMessage, 74240, maxRetry, 1, 0, 0)
+				BeaconNodeTester.testProcessBlock(bc, maxRetry, 1, 0, 0, headBlocksSent{
+					head:          BeaconNodeTester.TestEvents["2375703"].HeadMessage,
+					expectedEpoch: 74240,
+					expectStatus:  "proposed",
+				})
 
 				// Known Gaps
 				BeaconNodeTester.writeEventToKnownGaps(bc, 101, 101)
@@ -149,9 +164,10 @@ var _ = Describe("Capturehistoric", func() {
 		})
 		Context("When it recieves a known Gaps, historic and head  message (in order)", func() {
 			It("Should process them all successfully.", func() {
-				bc := setUpTest(BeaconNodeTester.TestConfig, "2375702")
 				BeaconNodeTester.SetupBeaconNodeMock(BeaconNodeTester.TestEvents, BeaconNodeTester.TestConfig.protocol, BeaconNodeTester.TestConfig.address, BeaconNodeTester.TestConfig.port, BeaconNodeTester.TestConfig.dummyParentRoot)
 				defer httpmock.DeactivateAndReset()
+
+				bc := setUpTest(BeaconNodeTester.TestConfig, "2375702")
 				// Known Gaps
 				BeaconNodeTester.writeEventToKnownGaps(bc, 101, 101)
 				BeaconNodeTester.runKnownGapsProcess(bc, 2, 1, 0, 0, 0)
@@ -161,7 +177,11 @@ var _ = Describe("Capturehistoric", func() {
 				BeaconNodeTester.runHistoricalProcess(bc, 2, 2, 0, 0, 0)
 
 				// Head
-				BeaconNodeTester.testProcessBlock(bc, BeaconNodeTester.TestEvents["2375703"].HeadMessage, 74240, maxRetry, 1, 0, 0)
+				BeaconNodeTester.testProcessBlock(bc, maxRetry, 1, 0, 0, headBlocksSent{
+					head:          BeaconNodeTester.TestEvents["2375703"].HeadMessage,
+					expectedEpoch: 74240,
+					expectStatus:  "proposed",
+				})
 
 				time.Sleep(2 * time.Second)
 				validatePopularBatchBlocks(bc)
@@ -200,25 +220,23 @@ func (tbc TestBeaconNode) writeEventToHistoricProcess(bc *beaconclient.BeaconCli
 
 // Start the CaptureHistoric function, and check for the correct inserted slots.
 func (tbc TestBeaconNode) runHistoricalProcess(bc *beaconclient.BeaconClient, maxWorkers int, expectedInserts, expectedReorgs, expectedKnownGaps, expectedKnownGapsReprocessError uint64) {
+	//pprof.Lookup("goroutine").WriteTo(os.Stdout, 1)
+	startGoRoutines := runtime.NumGoroutine()
 	ctx, cancel := context.WithCancel(context.Background())
 	go bc.CaptureHistoric(ctx, maxWorkers)
 	validateMetrics(bc, expectedInserts, expectedReorgs, expectedKnownGaps, expectedKnownGapsReprocessError)
-	log.Debug("Calling the stop function for historical processing..")
+	cancel()
-	err := bc.StopHistoric(cancel)
+	testStopHistoricProcessing(ctx, bc, startGoRoutines)
-	time.Sleep(5 * time.Second)
-	Expect(err).ToNot(HaveOccurred())
-	validateAllRowsCheckedOut(bc.Db, hpCheckCheckedOutStmt)
 }
 
 // Wrapper function that processes knownGaps
 func (tbc TestBeaconNode) runKnownGapsProcess(bc *beaconclient.BeaconClient, maxWorkers int, expectedInserts, expectedReorgs, expectedKnownGaps, expectedKnownGapsReprocessError uint64) {
+	startGoRoutines := runtime.NumGoroutine()
 	ctx, cancel := context.WithCancel(context.Background())
 	go bc.ProcessKnownGaps(ctx, maxWorkers)
 	validateMetrics(bc, expectedInserts, expectedReorgs, expectedKnownGaps, expectedKnownGapsReprocessError)
-	err := bc.StopKnownGapsProcessing(cancel)
+	cancel()
-	time.Sleep(5 * time.Second)
+	testStopKnownGapProcessing(ctx, bc, startGoRoutines)
-	Expect(err).ToNot(HaveOccurred())
-	validateAllRowsCheckedOut(bc.Db, kgCheckCheckedOutStmt)
 }
 
 func validateMetrics(bc *beaconclient.BeaconClient, expectedInserts, expectedReorgs, expectedKnownGaps, expectedKnownGapsReprocessError uint64) {
@@ -288,3 +306,37 @@ func validateAllRowsCheckedOut(db sql.Database, checkStmt string) {
 	Expect(err).ToNot(HaveOccurred())
 	Expect(rows).To(Equal(int64(0)))
 }
+
+// A make shift function to stop head tracking and insure we dont have any goroutine leaks
+func testStopHistoricProcessing(ctx context.Context, bc *beaconclient.BeaconClient, startGoRoutines int) {
+	log.Debug("Calling the stop function for historical processing..")
+	err := bc.StopHistoricProcess(ctx)
+	Expect(err).ToNot(HaveOccurred())
+	time.Sleep(5 * time.Second)
+	validateAllRowsCheckedOut(bc.Db, hpCheckCheckedOutStmt)
+
+	time.Sleep(5 * time.Second)
+	endNum := runtime.NumGoroutine()
+
+	//pprof.Lookup("goroutine").WriteTo(os.Stdout, 1)
+	//Expect(endNum <= startGoRoutines).To(BeTrue())
+	log.WithField("startNum", startGoRoutines).Info("Start Go routine number")
+	log.WithField("endNum", endNum).Info("End Go routine number")
+	Expect(endNum).To(Equal(startGoRoutines))
+}
+
+// A make shift function to stop head tracking and insure we dont have any goroutine leaks
+func testStopKnownGapProcessing(ctx context.Context, bc *beaconclient.BeaconClient, startGoRoutines int) {
+	log.Debug("Calling the stop function for knownGaps processing..")
+	err := bc.StopKnownGapsProcessing(ctx)
+	Expect(err).ToNot(HaveOccurred())
+	time.Sleep(5 * time.Second)
+	validateAllRowsCheckedOut(bc.Db, kgCheckCheckedOutStmt)
+
+	time.Sleep(3 * time.Second)
+	endNum := runtime.NumGoroutine()
+
+	//pprof.Lookup("goroutine").WriteTo(os.Stdout, 1)
+	//Expect(endNum <= startGoRoutines).To(BeTrue())
+	Expect(endNum).To(Equal(startGoRoutines))
+}

pkg/beaconclient/incomingsse.go

@@ -18,44 +18,37 @@
 package beaconclient
 
 import (
+	"context"
 	"encoding/json"
 	"time"
 
 	log "github.com/sirupsen/logrus"
 	"github.com/vulcanize/ipld-eth-beacon-indexer/pkg/loghelper"
-	"golang.org/x/sync/errgroup"
-)
-
-var (
-	shutdownWaitInterval = time.Duration(5) * time.Second
 )
 
 // This function will capture all the SSE events for a given SseEvents object.
 // When new messages come in, it will ensure that they are decoded into JSON.
 // If any errors occur, it log the error information.
-func handleIncomingSseEvent[P ProcessedEvents](eventHandler *SseEvents[P], errMetricInc func(uint64)) {
+func handleIncomingSseEvent[P ProcessedEvents](ctx context.Context, eventHandler *SseEvents[P], errMetricInc func(uint64), skipSse bool) {
-	go func() {
+	if !skipSse {
-		errG := new(errgroup.Group)
+		for {
-		errG.Go(func() error {
+			err := eventHandler.SseClient.SubscribeChanRawWithContext(ctx, eventHandler.MessagesCh)
-			err := eventHandler.SseClient.SubscribeChanRaw(eventHandler.MessagesCh)
 			if err != nil {
-				return err
+				loghelper.LogEndpoint(eventHandler.Endpoint).WithFields(log.Fields{
+					"err": err}).Error("We are unable to subscribe to the SSE endpoint")
+				time.Sleep(3 * time.Second)
+				continue
 			}
-			return nil
-		})
-		if err := errG.Wait(); err != nil {
-			log.WithFields(log.Fields{
-				"err":      err,
-				"endpoint": eventHandler.Endpoint,
-			}).Error("Unable to subscribe to the SSE endpoint.")
-			return
-		} else {
 			loghelper.LogEndpoint(eventHandler.Endpoint).Info("Successfully subscribed to the event stream.")
+			break
 		}
+	}
 
-	}()
 	for {
 		select {
+		case <-ctx.Done():
+			close(eventHandler.ProcessCh)
+			return
 		case message := <-eventHandler.MessagesCh:
 			// Message can be nil if its a keep-alive message
 			if len(message.Data) != 0 {
@@ -76,23 +69,24 @@ func handleIncomingSseEvent[P ProcessedEvents](eventHandler *SseEvents[P], errMe
 }
 
 // Turn the data object into a Struct.
-func processMsg[P ProcessedEvents](msg []byte, processCh chan<- *P, errorCh chan<- *SseError) {
+func processMsg[P ProcessedEvents](msg []byte, processCh chan<- P, errorCh chan<- SseError) {
 	var msgMarshaled P
 	err := json.Unmarshal(msg, &msgMarshaled)
 	if err != nil {
 		loghelper.LogError(err).Error("Unable to parse message")
-		errorCh <- &SseError{
+		errorCh <- SseError{
 			err: err,
 			msg: msg,
 		}
 		return
 	}
-	processCh <- &msgMarshaled
+	processCh <- msgMarshaled
+	log.Debug("Done sending")
 }
 
 // Capture all of the event topics.
-func (bc *BeaconClient) captureEventTopic() {
+func (bc *BeaconClient) captureEventTopic(ctx context.Context, skipSse bool) {
 	log.Info("We are capturing all SSE events")
-	go handleIncomingSseEvent(bc.HeadTracking, bc.Metrics.IncrementHeadError)
+	go handleIncomingSseEvent(ctx, bc.HeadTracking, bc.Metrics.IncrementHeadError, skipSse)
-	go handleIncomingSseEvent(bc.ReOrgTracking, bc.Metrics.IncrementReorgError)
+	go handleIncomingSseEvent(ctx, bc.ReOrgTracking, bc.Metrics.IncrementReorgError, skipSse)
 }

pkg/beaconclient/processevents.go

@@ -19,59 +19,102 @@
 package beaconclient
 
 import (
+	"context"
 	"fmt"
 	"strconv"
 
 	log "github.com/sirupsen/logrus"
+	"github.com/vulcanize/ipld-eth-beacon-indexer/pkg/database/sql"
 )
 
 // This function will perform the necessary steps to handle a reorg.
-func (bc *BeaconClient) handleReorg() {
+func (bc *BeaconClient) handleReorg(ctx context.Context) {
 	log.Info("Starting to process reorgs.")
 	for {
-		reorg := <-bc.ReOrgTracking.ProcessCh
+		select {
-		log.WithFields(log.Fields{"reorg": reorg}).Debug("Received a new reorg message.")
+		case <-ctx.Done():
-		writeReorgs(bc.Db, reorg.Slot, reorg.NewHeadBlock, bc.Metrics)
+			return
+		case reorg := <-bc.ReOrgTracking.ProcessCh:
+			log.WithFields(log.Fields{"reorg": reorg}).Debug("Received a new reorg message.")
+			writeReorgs(bc.Db, reorg.Slot, reorg.NewHeadBlock, bc.Metrics)
+		}
 	}
 }
 
 // This function will handle the latest head event.
-func (bc *BeaconClient) handleHead() {
+func (bc *BeaconClient) handleHead(ctx context.Context, maxWorkers int) {
 	log.Info("Starting to process head.")
+
+	workCh := make(chan workParams, 5)
+	log.WithField("workerNumber", maxWorkers).Info("Creating Workers")
+	for i := 1; i < maxWorkers; i++ {
+		go bc.headBlockProcessor(ctx, workCh)
+	}
 	errorSlots := 0
 	for {
-		head := <-bc.HeadTracking.ProcessCh
+		select {
-		// Process all the work here.
+		case <-ctx.Done():
-		slot, err := strconv.Atoi(head.Slot)
+			close(workCh)
-		if err != nil {
+			return
-			bc.HeadTracking.ErrorCh <- &SseError{
+		case head := <-bc.HeadTracking.ProcessCh:
-				err: fmt.Errorf("Unable to turn the slot from string to int: %s", head.Slot),
+
+			// Process all the work here.
+			slot, err := strconv.Atoi(head.Slot)
+			if err != nil {
+				bc.HeadTracking.ErrorCh <- SseError{
+					err: fmt.Errorf("Unable to turn the slot from string to int: %s", head.Slot),
+				}
+				errorSlots = errorSlots + 1
+				continue
 			}
-			errorSlots = errorSlots + 1
+			if errorSlots != 0 && bc.PreviousSlot != 0 {
-			continue
+				log.WithFields(log.Fields{
+					"lastProcessedSlot": bc.PreviousSlot,
+					"errorSlots":        errorSlots,
+				}).Warn("We added slots to the knownGaps table because we got bad head messages.")
+				writeKnownGaps(bc.Db, bc.KnownGapTableIncrement, bc.PreviousSlot+1, slot, fmt.Errorf("Bad Head Messages"), "headProcessing", bc.Metrics)
+				errorSlots = 0
+			}
+
+			log.WithFields(log.Fields{"head": head}).Debug("We are going to start processing the slot.")
+
+			// Not used anywhere yet but might be useful to have.
+			if bc.PreviousSlot == 0 && bc.PreviousBlockRoot == "" {
+				bc.StartingSlot = slot
+			}
+
+			workCh <- workParams{db: bc.Db, serverEndpoint: bc.ServerEndpoint, slot: slot, blockRoot: head.Block, stateRoot: head.State, previousSlot: bc.PreviousSlot, previousBlockRoot: bc.PreviousBlockRoot, metrics: bc.Metrics, knownGapsTableIncrement: bc.KnownGapTableIncrement, checkDb: bc.CheckDb}
+			log.WithFields(log.Fields{"head": head.Slot}).Debug("We finished sending this slot to the workCh")
+
+			// Update the previous block
+			bc.PreviousSlot = slot
+			bc.PreviousBlockRoot = head.Block
 		}
-		if errorSlots != 0 && bc.PreviousSlot != 0 {
-			log.WithFields(log.Fields{
-				"lastProcessedSlot": bc.PreviousSlot,
-				"errorSlots":        errorSlots,
-			}).Warn("We added slots to the knownGaps table because we got bad head messages.")
-			writeKnownGaps(bc.Db, bc.KnownGapTableIncrement, bc.PreviousSlot+1, slot, fmt.Errorf("Bad Head Messages"), "headProcessing", bc.Metrics)
-			errorSlots = 0
-		}
-
-		log.WithFields(log.Fields{"head": head}).Debug("We are going to start processing the slot.")
-
-		// Not used anywhere yet but might be useful to have.
-		if bc.PreviousSlot == 0 && bc.PreviousBlockRoot == "" {
-			bc.StartingSlot = slot
-		}
-
-		go processHeadSlot(bc.Db, bc.ServerEndpoint, slot, head.Block, head.State, bc.PreviousSlot, bc.PreviousBlockRoot, bc.Metrics, bc.KnownGapTableIncrement, bc.CheckDb)
-
-		log.WithFields(log.Fields{"head": head.Slot}).Debug("We finished calling processHeadSlot.")
-
-		// Update the previous block
-		bc.PreviousSlot = slot
-		bc.PreviousBlockRoot = head.Block
 	}
 }
+
+// A worker that will process head slots.
+func (bc *BeaconClient) headBlockProcessor(ctx context.Context, workCh <-chan workParams) {
+	for {
+		select {
+		case <-ctx.Done():
+			return
+		case wp := <-workCh:
+			processHeadSlot(ctx, wp.db, wp.serverEndpoint, wp.slot, wp.blockRoot, wp.stateRoot, wp.previousSlot, wp.previousBlockRoot, wp.metrics, wp.knownGapsTableIncrement, wp.checkDb)
+		}
+	}
+}
+
+// A struct used to pass parameters to the worker.
+type workParams struct {
+	db                      sql.Database
+	serverEndpoint          string
+	slot                    int
+	blockRoot               string
+	stateRoot               string
+	previousSlot            int
+	previousBlockRoot       string
+	metrics                 *BeaconClientMetrics
+	knownGapsTableIncrement int
+	checkDb                 bool
+}

pkg/beaconclient/processhistoric.go

@@ -132,6 +132,7 @@ func getBatchProcessRow(ctx context.Context, db sql.Database, getStartEndSlotStm
 	for len(errCount) < 5 {
 		select {
 		case <-ctx.Done():
+			close(slotCh)
 			return errCount
 		default:
 			if len(errCount) != prevErrCount {
@@ -228,7 +229,7 @@ func getBatchProcessRow(ctx context.Context, db sql.Database, getStartEndSlotStm
 
 // After a row has been processed it should be removed from its appropriate table.
 func removeRowPostProcess(ctx context.Context, db sql.Database, processCh <-chan slotsToProcess, checkProcessedStmt, removeStmt string) error {
-	errCh := make(chan error)
+	errCh := make(chan error, 1)
 	for {
 		select {
 		case <-ctx.Done():
@@ -241,25 +242,28 @@ func removeRowPostProcess(ctx context.Context, db sql.Database, processCh <-chan
 					"endSlot":   slots.endSlot,
 				}).Debug("Starting to check to see if the following slots have been processed")
 				for {
-					isStartProcess, err := isSlotProcessed(db, checkProcessedStmt, strconv.Itoa(slots.startSlot))
+					select {
-					if err != nil {
+					case <-ctx.Done():
-						errCh <- err
+						return
+					default:
+						isStartProcess, err := isSlotProcessed(db, checkProcessedStmt, strconv.Itoa(slots.startSlot))
+						if err != nil {
+							errCh <- err
+						}
+						isEndProcess, err := isSlotProcessed(db, checkProcessedStmt, strconv.Itoa(slots.endSlot))
+						if err != nil {
+							errCh <- err
+						}
+						if isStartProcess && isEndProcess {
+							_, err := db.Exec(context.Background(), removeStmt, strconv.Itoa(slots.startSlot), strconv.Itoa(slots.endSlot))
+							if err != nil {
+								errCh <- err
+							}
+							return
+						}
+						time.Sleep(3 * time.Second)
 					}
-					isEndProcess, err := isSlotProcessed(db, checkProcessedStmt, strconv.Itoa(slots.endSlot))
-					if err != nil {
-						errCh <- err
-					}
-					if isStartProcess && isEndProcess {
-						break
-					}
-					time.Sleep(3 * time.Second)
 				}
-
-				_, err := db.Exec(context.Background(), removeStmt, strconv.Itoa(slots.startSlot), strconv.Itoa(slots.endSlot))
-				if err != nil {
-					errCh <- err
-				}
-
 			}()
 			if len(errCh) != 0 {
 				return <-errCh

pkg/beaconclient/processknowngaps.go

@@ -20,6 +20,7 @@ package beaconclient
 
 import (
 	"context"
+	"fmt"
 	"strconv"
 
 	log "github.com/sirupsen/logrus"
@@ -67,14 +68,18 @@ func (bc *BeaconClient) ProcessKnownGaps(ctx context.Context, maxWorkers int) []
 }
 
 // This function will perform all the necessary clean up tasks for stopping historical processing.
-func (bc *BeaconClient) StopKnownGapsProcessing(cancel context.CancelFunc) error {
+func (bc *BeaconClient) StopKnownGapsProcessing(ctx context.Context) error {
-	log.Info("We are stopping the known gaps processing service.")
+	select {
-	cancel()
+	case <-ctx.Done():
-	err := bc.KnownGapsProcess.releaseDbLocks()
+		log.Info("We are stopping the known gaps processing service.")
-	if err != nil {
+		err := bc.KnownGapsProcess.releaseDbLocks()
-		loghelper.LogError(err).WithField("uniqueIdentifier", bc.UniqueNodeIdentifier).Error("We were unable to remove the locks from the eth_beacon.known_gaps table. Manual Intervention is needed!")
+		if err != nil {
+			loghelper.LogError(err).WithField("uniqueIdentifier", bc.UniqueNodeIdentifier).Error("We were unable to remove the locks from the eth_beacon.known_gaps table. Manual Intervention is needed!")
+		}
+		return nil
+	default:
+		return fmt.Errorf("Tried to stop knownGaps Processing without closing the context..")
 	}
-	return nil
 }
 
 // Get a single row of historical slots from the table.

pkg/beaconclient/processslot.go

@@ -156,10 +156,6 @@ func processFullSlot(ctx context.Context, db sql.Database, serverAddress string,
 
 		if err := g.Wait(); err != nil {
 			// Make sure channel is empty.
-			select {
-			case <-vUnmarshalerCh:
-			default:
-			}
 			return err, "processSlot"
 		}
 
@@ -239,12 +235,12 @@ func processFullSlot(ctx context.Context, db sql.Database, serverAddress string,
 }
 
 // Handle a slot that is at head. A wrapper function for calling `handleFullSlot`.
-func processHeadSlot(db sql.Database, serverAddress string, slot int, blockRoot string, stateRoot string, previousSlot int, previousBlockRoot string, metrics *BeaconClientMetrics, knownGapsTableIncrement int, checkDb bool) {
+func processHeadSlot(ctx context.Context, db sql.Database, serverAddress string, slot int, blockRoot string, stateRoot string, previousSlot int, previousBlockRoot string, metrics *BeaconClientMetrics, knownGapsTableIncrement int, checkDb bool) {
 	// Get the knownGaps at startUp.
 	if previousSlot == 0 && previousBlockRoot == "" {
 		writeStartUpGaps(db, knownGapsTableIncrement, slot, metrics)
 	}
-	err, errReason := processFullSlot(context.Background(), db, serverAddress, slot, blockRoot, stateRoot, previousSlot, previousBlockRoot, "head", metrics, knownGapsTableIncrement, checkDb)
+	err, errReason := processFullSlot(ctx, db, serverAddress, slot, blockRoot, stateRoot, previousSlot, previousBlockRoot, "head", metrics, knownGapsTableIncrement, checkDb)
 	if err != nil {
 		writeKnownGaps(db, knownGapsTableIncrement, slot, slot, err, errReason, metrics)
 	}
@@ -296,14 +292,20 @@ func (ps *ProcessSlot) getSignedBeaconBlock(serverAddress string, vmCh <-chan *d
 
 // Update the SszBeaconState and FullBeaconState object with their respective values.
 func (ps *ProcessSlot) getBeaconState(serverEndpoint string, vmCh chan<- *dt.VersionedUnmarshaler) error {
-	var stateIdentifier string // Used to query the state
+	var (
+		stateIdentifier string // Used to query the state
+		err             error
+	)
 	if ps.StateRoot != "" {
 		stateIdentifier = ps.StateRoot
 	} else {
 		stateIdentifier = strconv.Itoa(ps.Slot)
 	}
 	stateEndpoint := serverEndpoint + BcStateQueryEndpoint + stateIdentifier
-	ps.SszBeaconState, _, _ = querySsz(stateEndpoint, strconv.Itoa(ps.Slot))
+	ps.SszBeaconState, _, err = querySsz(stateEndpoint, strconv.Itoa(ps.Slot))
+	if err != nil {
+		return fmt.Errorf("Unable to querrySSZ")
+	}
 
 	versionedUnmarshaler, err := dt.FromState(*ps.SszBeaconState)
 	if err != nil {

pkg/beaconclient/queryserver.go

@@ -43,12 +43,20 @@ func querySsz(endpoint string, slot string) (*[]byte, int, error) {
 		return nil, 0, fmt.Errorf("Unable to query Beacon Node: %s", err.Error())
 	}
 	defer response.Body.Close()
+	// Needed for testing.... But might be interesting to test with...
+	defer client.CloseIdleConnections()
 	rc := response.StatusCode
+
+	//var body []byte
+	//io.Copy(body, response.Body)
+	//bytes.buffer...
+	//_, err = response.Body.Read(body)
 	body, err := ioutil.ReadAll(response.Body)
 	if err != nil {
 		loghelper.LogSlotError(slot, err).Error("Unable to turn response into a []bytes array!")
 		return nil, rc, fmt.Errorf("Unable to turn response into a []bytes array!: %s", err.Error())
 	}
+	//log.WithField("body", unsafe.Sizeof(body)).Debug("Size of the raw SSZ object")
 	return &body, rc, nil
 }
 

pkg/beaconclient/systemvalidation_test.go

@@ -1,11 +1,13 @@
 package beaconclient_test
 
 import (
+	"context"
 	"os"
 	"strconv"
 	"time"
 
 	. "github.com/onsi/ginkgo/v2"
+
 	//. "github.com/onsi/gomega"
 	"github.com/vulcanize/ipld-eth-beacon-indexer/pkg/beaconclient"
 )
@@ -28,7 +30,7 @@ var (
 )
 var _ = Describe("Systemvalidation", Label("system"), func() {
 	Describe("Run the application against a running lighthouse node", func() {
-		Context("When we receive head messages", func() {
+		Context("When we receive head messages", Label("system-head"), func() {
 			It("We should process the messages successfully", func() {
 				bc := setUpTest(prodConfig, "10000000000")
 				processProdHeadBlocks(bc, 3, 0, 0, 0)
@@ -63,7 +65,23 @@ func getEnvInt(envVar string) int {
 
 // Start head tracking and wait for the expected results.
 func processProdHeadBlocks(bc *beaconclient.BeaconClient, expectedInserts, expectedReorgs, expectedKnownGaps, expectedKnownGapsReprocessError uint64) {
-	go bc.CaptureHead()
+	//startGoRoutines := runtime.NumGoroutine()
-	time.Sleep(1 * time.Second)
+	//pprof.Lookup("goroutine").WriteTo(os.Stdout, 1)
+	ctx, cancel := context.WithCancel(context.Background())
+	go bc.CaptureHead(ctx, 2, false)
+	time.Sleep(5 * time.Second)
 	validateMetrics(bc, expectedInserts, expectedReorgs, expectedKnownGaps, expectedKnownGapsReprocessError)
+
+	cancel()
+	time.Sleep(4 * time.Second)
+	testStopSystemHeadTracking(ctx, bc)
+}
+
+// Custom stop for system testing
+func testStopSystemHeadTracking(ctx context.Context, bc *beaconclient.BeaconClient) {
+	bc.StopHeadTracking(ctx, false)
+
+	time.Sleep(3 * time.Second)
+	//pprof.Lookup("goroutine").WriteTo(os.Stdout, 1)
+	//Expect(endNum <= startGoRoutines).To(BeTrue())
 }

pkg/gracefulshutdown/gracefulshutdown.go

@@ -45,7 +45,11 @@ func Shutdown(ctx context.Context, notifierCh chan os.Signal, timeout time.Durat
 
 		// add any other syscalls that you want to be notified with
 		signal.Notify(notifierCh, syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP)
-		<-notifierCh
+		// Wait for one or the other...
+		select {
+		case <-notifierCh:
+		case <-ctx.Done():
+		}
 
 		log.Info("Shutting Down your application")