feat(prover): make guardian provers connecting to their local raiko service

Author: davidtaikocha

prover/config.go

@@ -118,11 +118,6 @@ func NewConfigFromCliContext(c *cli.Context) (*Config, error) {
 		}
 	}
 
-	// If we are not running a guardian prover, a raiko host endpoint is required.
-	if !c.IsSet(flags.GuardianProver.Name) && !c.IsSet(flags.RaikoHostEndpoint.Name) {
-		return nil, errors.New("raiko host not provided")
-	}
-
 	var (
 		raikoL1Endpoint       = c.String(flags.RaikoL1Endpoint.Name)
 		raikoL1BeaconEndpoint = c.String(flags.RaikoL1BeaconEndpoint.Name)

prover/init.go

@@ -113,7 +113,13 @@ func (p *Prover) initProofSubmitters(
 				Dummy:             p.cfg.Dummy,
 			}
 		case encoding.TierGuardianID:
-			producer = proofProducer.NewGuardianProofProducer(p.cfg.EnableLivenessBondProof)
+			producer = proofProducer.NewGuardianProofProducer(&proofProducer.SGXProofProducer{
+				RaikoHostEndpoint: p.cfg.RaikoHostEndpoint,
+				L1Endpoint:        p.cfg.RaikoL1Endpoint,
+				L1BeaconEndpoint:  p.cfg.RaikoL1BeaconEndpoint,
+				L2Endpoint:        p.cfg.RaikoL2Endpoint,
+				Dummy:             p.cfg.Dummy,
+			}, p.cfg.EnableLivenessBondProof)
 		default:
 			return fmt.Errorf("unsupported tier: %d", tier.ID)
 		}

prover/proof_producer/guardian_producer.go

@@ -15,11 +15,12 @@ import (
 // GuardianProofProducer always returns an optimistic (dummy) proof.
 type GuardianProofProducer struct {
 	returnLivenessBond bool
-	DummyProofProducer
+	*SGXProofProducer
 }
 
-func NewGuardianProofProducer(returnLivenessBond bool) *GuardianProofProducer {
+func NewGuardianProofProducer(sgxProofProducer *SGXProofProducer, returnLivenessBond bool) *GuardianProofProducer {
 	return &GuardianProofProducer{
+		SGXProofProducer:   sgxProofProducer,
 		returnLivenessBond: returnLivenessBond,
 	}
 }
@@ -51,6 +52,12 @@ func (g *GuardianProofProducer) RequestProof(
 		}, nil
 	}
 
+	// Each guardian prover should check the block hash with raiko at first,
+	// before submitting the guardian proof.
+	if _, err := g.SGXProofProducer.requestProof(opts); err != nil {
+		return nil, err
+	}
+
 	return g.DummyProofProducer.RequestProof(opts, blockID, meta, header, g.Tier())
 }
 

prover/proof_producer/guardian_producer_test.go

@@ -33,7 +33,7 @@ func TestGuardianProducerRequestProof(t *testing.T) {
 	}
 
 	var (
-		producer = NewGuardianProofProducer(false)
+		producer = NewGuardianProofProducer(&SGXProofProducer{Dummy: true}, false)
 		blockID  = common.Big32
 	)
 	res, err := producer.RequestProof(
@@ -70,7 +70,7 @@ func TestGuardianProducerRequestProofReturnLivenessBond(t *testing.T) {
 	}
 
 	var (
-		producer = NewGuardianProofProducer(true)
+		producer = NewGuardianProofProducer(&SGXProofProducer{Dummy: true}, true)
 		blockID  = common.Big32
 	)
 	res, err := producer.RequestProof(