Make linter happy and check sse subscription err

go.mod

@@ -54,6 +54,7 @@ require (
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/spf13/viper v1.11.0
 	github.com/subosito/gotenv v1.2.0 // indirect
+	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
 	golang.org/x/sys v0.0.0-20220503163025-988cb79eb6c6 // indirect
 	golang.org/x/text v0.3.7 // indirect
 	gopkg.in/ini.v1 v1.66.4 // indirect

go.sum

@@ -696,6 +696,7 @@ golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=

pkg/beaconclient/beaconclient.go

@@ -10,14 +10,14 @@ import (
 
 // TODO: Use prysms config values instead of hardcoding them here.
 var (
-	bcHealthEndpoint          = "/eth/v1/node/health"                        // Endpoint used for the healthcheck
+	bcHealthEndpoint     = "/eth/v1/node/health"               // Endpoint used for the healthcheck
-	bcHeadTopicEndpoint       = "/eth/v1/events?topics=head"                 // Endpoint used to subscribe to the head of the chain
+	bcHeadTopicEndpoint  = "/eth/v1/events?topics=head"        // Endpoint used to subscribe to the head of the chain
-	bcReorgTopicEndpoint      = "/eth/v1/events?topics=chain_reorg"          // Endpoint used to subscribe to the head of the chain
+	bcReorgTopicEndpoint = "/eth/v1/events?topics=chain_reorg" // Endpoint used to subscribe to the head of the chain
-	bcFinalizedTopicEndpoint  = "/eth/v1/events?topics=finalized_checkpoint" // Endpoint used to subscribe to the head of the chain
+	bcBlockQueryEndpoint = "/eth/v2/beacon/blocks/"            // Endpoint to query individual Blocks
-	bcBlockQueryEndpoint      = "/eth/v2/beacon/blocks/"                     // Endpoint to query individual Blocks
+	bcStateQueryEndpoint = "/eth/v2/debug/beacon/states/"      // Endpoint to query individual States
-	bcStateQueryEndpoint      = "/eth/v2/debug/beacon/states/"               // Endpoint to query individual States
+	bcSlotsPerEpoch      = 32                                  // Number of slots in a single Epoch
-	bcSlotsPerEpoch           = 32                                           // Number of slots in a single Epoch
+	//bcSlotPerHistoricalVector = 8192                                // The number of slots in a historic vector.
-	bcSlotPerHistoricalVector = 8192                                         // The number of slots in a historic vector.
+	//bcFinalizedTopicEndpoint  = "/eth/v1/events?topics=finalized_checkpoint" // Endpoint used to subscribe to the head of the chain
 )
 
 // A struct that capture the Beacon Server that the Beacon Client will be interacting with and querying.

pkg/beaconclient/capturehead.go

@@ -20,48 +20,16 @@ func (bc *BeaconClient) CaptureHead(db sql.Database) {
 	bc.captureEventTopic()
 }
 
-// A temporary helper function to see the output of beacon block and states.
-//func (bc *BeaconClient) tempHelper() {
-//	slot := "3200"
-//	blockEndpoint := bc.ServerEndpoint + bcBlockQueryEndpoint + slot
-//	stateEndpoint := bc.ServerEndpoint + bcStateQueryEndpoint + slot
-//	// Query
-//	log.Info("Get")
-//	blockSsz, _ := querySsz(blockEndpoint, slot)
-//	stateSsz, _ := querySsz(stateEndpoint, slot)
-//	// Transform
-//	log.Info("Tranform")
-//	stateObj := new(spectests.BeaconState)
-//	err := stateObj.UnmarshalSSZ(stateSsz)
-//	if err != nil {
-//		loghelper.LogSlotError(slot, err).Error("Unable to unmarshal the SSZ response from the Beacon Node Successfully!")
-//	}
-//
-//	blockObj := new(spectests.SignedBeaconBlock)
-//	err = blockObj.UnmarshalSSZ(blockSsz)
-//	if err != nil {
-//		loghelper.LogSlotError(slot, err).Error("Unable to unmarshal the SSZ response from the Beacon Node Successfully!")
-//	}
-//
-//	// Check
-//	log.Info("Check")
-//	log.Info("State Slot: ", stateObj.Slot)
-//	log.Info("Block Slot: ", blockObj.Block.Slot)
-//}
-//
 // Stop the head tracking service.
 func (bc *BeaconClient) StopHeadTracking() error {
 	log.Info("We are going to stop tracking the head of chain because of the shutdown signal.")
 	chHead := make(chan bool)
 	chReorg := make(chan bool)
-	//chFinal := make(chan bool)
 
 	go bc.HeadTracking.finishProcessingChannel(chHead)
 	go bc.ReOrgTracking.finishProcessingChannel(chReorg)
-	//go bc.FinalizationTracking.finishProcessingChannel(chFinal)
 
 	<-chHead
-	//<-chFinal
 	<-chReorg
 	log.Info("Successfully stopped the head tracking service.")
 	return nil

pkg/beaconclient/incomingsse.go

@@ -8,6 +8,7 @@ import (
 
 	log "github.com/sirupsen/logrus"
 	"github.com/vulcanize/ipld-ethcl-indexer/pkg/loghelper"
+	"golang.org/x/sync/errgroup"
 )
 
 var (
@@ -18,8 +19,23 @@ var (
 // 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]) {
-	loghelper.LogEndpoint(eventHandler.Endpoint).Info("Subscribing to Messages")
+	errG := new(errgroup.Group)
-	go eventHandler.SseClient.SubscribeChanRaw(eventHandler.MessagesCh)
+	errG.Go(func() error {
+		err := eventHandler.SseClient.SubscribeChanRaw(eventHandler.MessagesCh)
+		if err != nil {
+			return err
+		}
+		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.")
+	}
 	for {
 		select {
 		case message := <-eventHandler.MessagesCh:
@@ -62,5 +78,4 @@ func (bc *BeaconClient) captureEventTopic() {
 	log.Info("We are capturing all SSE events")
 	go handleIncomingSseEvent(bc.HeadTracking)
 	go handleIncomingSseEvent(bc.ReOrgTracking)
-	// go handleIncomingSseEvent(bc.FinalizationTracking)
 }

pkg/beaconclient/models.go

@@ -2,7 +2,7 @@ package beaconclient
 
 // This interface captured what the events can be for processed event streams.
 type ProcessedEvents interface {
-	Head | FinalizedCheckpoint | ChainReorg
+	Head | ChainReorg
 }
 
 // This struct captures the JSON representation of the head topic

pkg/beaconclient/processslot.go

@@ -99,9 +99,10 @@ func handleHeadSlot(db sql.Database, serverAddress string, slot int, blockRoot s
 }
 
 // Handle a historic slot. A wrapper function for calling `handleFullSlot`.
-func handleHistoricSlot(db sql.Database, serverAddress string, slot int) error {
+// Commented because of the linter...... LOL
-	return handleFullSlot(db, serverAddress, slot, "", "", 0, "", "historic")
+//func handleHistoricSlot(db sql.Database, serverAddress string, slot int) error {
-}
+//	return handleFullSlot(db, serverAddress, slot, "", "", 0, "", "historic")
+//}
 
 // Update the SszSignedBeaconBlock and FullSignedBeaconBlock object with their respective values.
 func (ps *ProcessSlot) getSignedBeaconBlock(serverAddress string) error {

pkg/beaconclient/queryserver.go

@@ -11,70 +11,6 @@ import (
 	"github.com/vulcanize/ipld-ethcl-indexer/pkg/loghelper"
 )
 
-// Attempt to use generics..
-// // These are types that append slot at the end of the URL to handle a request.
-// type SlotBasedRequests interface {
-// 	*specs.BeaconState | *specs.SignedBeaconBlock
-// 	UnmarshalSSZ([]byte) error
-// }
-//
-// func queryState[R SlotBasedRequests](endpoint string, slot string) (R, error) {
-// 	obj := new(R)
-// 	rawState, err := querySlot(endpoint, slot)
-// 	if err != nil {
-// 		return *obj, err
-// 	}
-//
-// 	err = &obj.UnmarshalSSZ(rawState)
-// 	err = (*obj).UnmarshalSSZ(rawState)
-// 	if err != nil {
-// 		loghelper.LogSlotError(slot, err).Error("Unable to unmarshal the SSZ response from the Beacon Node Successfully!")
-// 		return *obj, fmt.Errorf("Unable to unmarshal the SSZ response from the Beacon Node Successfully!: %s", err.Error())
-// 	}
-// 	return *obj, nil
-// }
-
-// This function will query a state object based on the slot provided.
-// The object is SSZ encoded.
-
-//type BeaconBlockResponse struct {
-//	version string `json: `
-//}
-
-// func queryState(endpoint string, slot string) (spectests.BeaconState, error) {
-// 	obj := new(spectests.BeaconState)
-// 	fullEndpoint := endpoint + slot
-// 	rawState, err := querySsz(fullEndpoint, slot)
-// 	if err != nil {
-// 		return *obj, err
-// 	}
-//
-// 	err = obj.UnmarshalSSZ(rawState)
-// 	if err != nil {
-// 		loghelper.LogSlotError(slot, err).Error("Unable to unmarshal the SSZ response from the Beacon Node")
-// 		return *obj, fmt.Errorf("Unable to unmarshal the SSZ response from the Beacon Node: %s", err.Error())
-// 	}
-// 	return *obj, nil
-// }
-//
-// // This function will query a state object based on the slot provided.
-// // The object is SSZ encoded.
-// func queryBlock(endpoint string, slot string) (spectests.SignedBeaconBlock, error) {
-// 	obj := new(spectests.SignedBeaconBlock)
-// 	fullEndpoint := endpoint + slot
-// 	rawBlock, err := querySsz(fullEndpoint, slot)
-// 	if err != nil {
-// 		return *obj, err
-// 	}
-//
-// 	err = obj.UnmarshalSSZ(rawBlock)
-// 	if err != nil {
-// 		loghelper.LogSlotError(slot, err).Error("Unable to unmarshal the SSZ response from the Beacon Node Successfully!")
-// 		return *obj, fmt.Errorf("Unable to unmarshal the SSZ response from the Beacon Node Successfully!: %s", err.Error())
-// 	}
-// 	return *obj, nil
-// }
-
 // A helper function to query endpoints that utilize slots.
 func querySsz(endpoint string, slot string) ([]byte, int, error) {
 	log.WithFields(log.Fields{"endpoint": endpoint}).Info("Querying endpoint")