getter rpc method for the seed node's geth info

cmd/syncAndPublish.go

@@ -73,7 +73,7 @@ func syncAndPublish() {
 	if workers < 1 {
 		workers = 1
 	}
-	processor, err := seed_node.NewSeedNode(ipfsPath, &db, rpcClient, quitChan, workers)
+	processor, err := seed_node.NewSeedNode(ipfsPath, &db, rpcClient, quitChan, workers, blockChain.Node())
 	if err != nil {
 		log.Fatal(err)
 	}

cmd/syncPublishScreenAndServe.go

@@ -67,7 +67,7 @@ func syncPublishScreenAndServe() {
 	if workers < 1 {
 		workers = 1
 	}
-	processor, err := seed_node.NewSeedNode(ipfsPath, &db, rpcClient, quitChan, workers)
+	processor, err := seed_node.NewSeedNode(ipfsPath, &db, rpcClient, quitChan, workers, blockChain.Node())
 	if err != nil {
 		log.Fatal(err)
 	}

pkg/seed_node/api.go

@@ -24,6 +24,7 @@ import (
 
 	"github.com/vulcanize/vulcanizedb/libraries/shared/streamer"
 	"github.com/vulcanize/vulcanizedb/pkg/config"
+	"github.com/vulcanize/vulcanizedb/pkg/core"
 )
 
 // APIName is the namespace used for the state diffing service API
@@ -82,3 +83,8 @@ func (api *PublicSeedNodeAPI) Stream(ctx context.Context, streamFilters config.S
 
 	return rpcSub, nil
 }
+
+// Node is a public rpc method to allow transformers to fetch the Geth node info for the seed node
+func (api *PublicSeedNodeAPI) Node() core.Node {
+	return api.sni.Node()
+}

pkg/seed_node/service.go

@@ -52,6 +52,8 @@ type NodeInterface interface {
 	Subscribe(id rpc.ID, sub chan<- streamer.SeedNodePayload, quitChan chan<- bool, streamFilters config.Subscription)
 	// Method to unsubscribe from state diff processing
 	Unsubscribe(id rpc.ID)
+	// Method to access the Geth node info for this service
+	Node() core.Node
 }
 
 // Service is the underlying struct for the SyncAndPublish interface
@@ -84,10 +86,12 @@ type Service struct {
 	SubscriptionTypes map[common.Hash]config.Subscription
 	// Number of workers
 	WorkerPoolSize int
+	// Info for the Geth node that this seed node is working with
+	gethNode core.Node
 }
 
 // NewSeedNode creates a new seed_node.Interface using an underlying seed_node.Service struct
-func NewSeedNode(ipfsPath string, db *postgres.DB, rpcClient core.RpcClient, qc chan bool, workers int) (NodeInterface, error) {
+func NewSeedNode(ipfsPath string, db *postgres.DB, rpcClient core.RpcClient, qc chan bool, workers int, node core.Node) (NodeInterface, error) {
 	publisher, err := ipfs.NewIPLDPublisher(ipfsPath)
 	if err != nil {
 		return nil, err
@@ -110,6 +114,7 @@ func NewSeedNode(ipfsPath string, db *postgres.DB, rpcClient core.RpcClient, qc
 		Subscriptions:     make(map[common.Hash]map[rpc.ID]Subscription),
 		SubscriptionTypes: make(map[common.Hash]config.Subscription),
 		WorkerPoolSize:    workers,
+		gethNode:          node,
 	}, nil
 }
 
@@ -394,6 +399,11 @@ func (sap *Service) Stop() error {
 	return nil
 }
 
+// Node returns the Geth node info for this service
+func (sap *Service) Node() core.Node {
+	return sap.gethNode
+}
+
 // close is used to close all listening subscriptions
 func (sap *Service) close() {
 	sap.Lock()