Add proposer authentication to builder payload

builder/README.md

@@ -21,7 +21,7 @@ sequenceDiagram
     OPB-->>BB: PayloadAttributes
 
     Note right of BB: timespan for building blocks
-    OPS->> BB: /eth/v1/builder/payload/{slot}/{parent_hash}
+    OPS->> BB: POST /eth/v1/builder/payload
     BB-->>OPS: BuilderPayload
     OPS->> EES: engine_getPayload
     OPS-->>OPS: SimulatePayload
@@ -43,5 +43,7 @@ To enable the builder:
 
   * `--builder` Enable the Builder module
   * `--builder.beacon_endpoints` list of op-node SSE event stream endpoints to subscribe from
+  * `--builder.signing_key` private key to sign requested block payloads
+  * `--builder.proposer_signing_address` signing address used to authenticate the proposer
 
 Run `geth --help` for the full list of builder configurations.

builder/beacon_client.go

@@ -6,19 +6,20 @@ import (
 	"fmt"
 	"time"
 
+	"github.com/ethereum/go-ethereum/builder/types"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/r3labs/sse"
 )
 
 type IBeaconClient interface {
-	SubscribeToPayloadAttributesEvents(payloadAttrC chan BuilderPayloadAttributes)
+	SubscribeToPayloadAttributesEvents(payloadAttrC chan types.PayloadAttributes)
 	Start() error
 	Stop()
 }
 
 type NilBeaconClient struct{}
 
-func (b *NilBeaconClient) SubscribeToPayloadAttributesEvents(payloadAttrC chan BuilderPayloadAttributes) {
+func (b *NilBeaconClient) SubscribeToPayloadAttributesEvents(payloadAttrC chan types.PayloadAttributes) {
 }
 
 func (b *NilBeaconClient) Start() error { return nil }
@@ -43,14 +44,14 @@ func NewOpBeaconClient(endpoint string) *OpBeaconClient {
 	}
 }
 
-func (opbc *OpBeaconClient) SubscribeToPayloadAttributesEvents(payloadAttrC chan BuilderPayloadAttributes) {
+func (opbc *OpBeaconClient) SubscribeToPayloadAttributesEvents(payloadAttrC chan types.PayloadAttributes) {
 	eventsURL := fmt.Sprintf("%s/events", opbc.endpoint)
 	log.Info("subscribing to payload_attributes events", "url", eventsURL)
 
 	for {
 		client := sse.NewClient(eventsURL)
 		err := client.SubscribeWithContext(opbc.ctx, "payload_attributes", func(msg *sse.Event) {
-			data := new(BuilderPayloadAttributes)
+			data := new(types.PayloadAttributes)
 			err := json.Unmarshal(msg.Data, data)
 			if err != nil {
 				log.Error("could not unmarshal payload_attributes event", "err", err)

builder/beacon_client_test.go

@@ -4,32 +4,33 @@ import (
 	"testing"
 	"time"
 
+	"github.com/ethereum/go-ethereum/builder/types"
 	"gotest.tools/assert"
 )
 
 type mockBeaconNode struct {
-	payloadAttributes BuilderPayloadAttributes
+	payloadAttributes types.PayloadAttributes
 }
 
 func (b *mockBeaconNode) Stop() {}
 
-func (b *mockBeaconNode) SubscribeToPayloadAttributesEvents(payloadAttrC chan BuilderPayloadAttributes) {
+func (b *mockBeaconNode) SubscribeToPayloadAttributesEvents(payloadAttrC chan types.PayloadAttributes) {
 	go func() {
 		payloadAttrC <- b.payloadAttributes
 	}()
 }
 
 func (b *mockBeaconNode) Start() error { return nil }
 
-func newMockBeaconNode(payloadAttributes BuilderPayloadAttributes) *mockBeaconNode {
+func newMockBeaconNode(payloadAttributes types.PayloadAttributes) *mockBeaconNode {
 	return &mockBeaconNode{
 		payloadAttributes: payloadAttributes,
 	}
 }
 
 func TestMockBeaconNode(t *testing.T) {
-	mockBeaconNode := newMockBeaconNode(BuilderPayloadAttributes{Slot: 123})
-	payloadAttrC := make(chan BuilderPayloadAttributes, 1) // Use buffered channel
+	mockBeaconNode := newMockBeaconNode(types.PayloadAttributes{Slot: 123})
+	payloadAttrC := make(chan types.PayloadAttributes, 1) // Use buffered channel
 
 	mockBeaconNode.SubscribeToPayloadAttributesEvents(payloadAttrC)