feat(prover): fix a tier selection issue (#534)

Author: davidtaikocha

prover/prover.go

@@ -803,17 +803,23 @@ func (p *Prover) handleNewBlockProposedEvent(ctx context.Context, e *bindings.Ta
 		}
 	}
 
+	tier := e.Meta.MinTier
+	if p.IsGuardianProver() {
+		tier = encoding.TierGuardianID
+	}
+
 	log.Info(
 		"Proposed block is provable",
 		"blockID", e.BlockId,
 		"prover", e.AssignedProver,
 		"expiresAt", provingWindowExpiresAt,
 		"minTier", e.Meta.MinTier,
+		"currentTier", tier,
 	)
 
 	metrics.ProverProofsAssigned.Inc(1)
 
-	if proofSubmitter := p.selectSubmitter(e.Meta.MinTier); proofSubmitter != nil {
+	if proofSubmitter := p.selectSubmitter(tier); proofSubmitter != nil {
 		return proofSubmitter.RequestProof(ctx, e)
 	}
 

prover/prover_test.go

@@ -235,7 +235,10 @@ func (s *ProverTestSuite) TestContestWrongBlocks() {
 	contesterKey, err := crypto.ToECDSA(common.FromHex(os.Getenv("L1_CONTRACT_OWNER_PRIVATE_KEY")))
 	s.Nil(err)
 
-	s.NotNil(s.initProver(context.Background(), contesterKey))
+	s.NotNil(s.initProver(
+		context.Background(),
+		contesterKey,
+	))
 	s.p.cfg.ContesterMode = true
 
 	s.Greater(header.Number.Uint64(), uint64(0))
@@ -247,8 +250,13 @@ func (s *ProverTestSuite) TestContestWrongBlocks() {
 	s.Equal(header.ParentHash, common.BytesToHash(contestedEvent.Tran.ParentHash[:]))
 
 	s.Nil(s.p.onTransitionContested(context.Background(), contestedEvent))
+
+	s.p.cfg.GuardianProverAddress = common.HexToAddress(os.Getenv("GUARDIAN_PROVER_CONTRACT_ADDRESS"))
 	s.True(s.p.IsGuardianProver())
 
+	s.p.rpc.GuardianProver, err = bindings.NewGuardianProver(s.p.cfg.GuardianProverAddress, s.p.rpc.L1)
+	s.Nil(err)
+
 	approvedSink := make(chan *bindings.GuardianProverApproved)
 	approvedSub, err := s.p.rpc.GuardianProver.WatchApproved(nil, approvedSink, [](*big.Int){})
 	s.Nil(err)
@@ -455,7 +463,10 @@ func TestProverTestSuite(t *testing.T) {
 	suite.Run(t, new(ProverTestSuite))
 }
 
-func (s *ProverTestSuite) initProver(ctx context.Context, key *ecdsa.PrivateKey) *url.URL {
+func (s *ProverTestSuite) initProver(
+	ctx context.Context,
+	key *ecdsa.PrivateKey,
+) *url.URL {
 	proverServerURL := testutils.LocalRandomProverEndpoint()
 	port, err := strconv.Atoi(proverServerURL.Port())
 	s.Nil(err)
@@ -475,7 +486,6 @@ func (s *ProverTestSuite) initProver(ctx context.Context, key *ecdsa.PrivateKey)
 		TaikoL2Address:           common.HexToAddress(os.Getenv("TAIKO_L2_ADDRESS")),
 		TaikoTokenAddress:        common.HexToAddress(os.Getenv("TAIKO_TOKEN_ADDRESS")),
 		AssignmentHookAddress:    common.HexToAddress(os.Getenv("ASSIGNMENT_HOOK_ADDRESS")),
-		GuardianProverAddress:    common.HexToAddress(os.Getenv("GUARDIAN_PROVER_CONTRACT_ADDRESS")),
 		L1ProverPrivKey:          key,
 		Dummy:                    true,
 		ProveUnassignedBlocks:    true,