eth/catalyst: rename catalyst -> Engine API in logs

cmd/utils/flags.go

@@ -1994,7 +1994,7 @@ func RegisterEthService(stack *node.Node, cfg *ethconfig.Config) (ethapi.Backend
 		}
 		stack.RegisterAPIs(tracers.APIs(backend.ApiBackend))
 		if err := lescatalyst.Register(stack, backend); err != nil {
-			Fatalf("Failed to register the catalyst service: %v", err)
+			Fatalf("Failed to register the Engine API service: %v", err)
 		}
 		return backend.ApiBackend, nil
 	}
@@ -2009,7 +2009,7 @@ func RegisterEthService(stack *node.Node, cfg *ethconfig.Config) (ethapi.Backend
 		}
 	}
 	if err := ethcatalyst.Register(stack, backend); err != nil {
-		Fatalf("Failed to register the catalyst service: %v", err)
+		Fatalf("Failed to register the Engine API service: %v", err)
 	}
 	stack.RegisterAPIs(tracers.APIs(backend.APIBackend))
 	return backend.APIBackend, backend

eth/catalyst/api.go

@@ -37,9 +37,9 @@ import (
 	"github.com/ethereum/go-ethereum/rpc"
 )
 
-// Register adds catalyst APIs to the full node.
+// Register adds the engine API to the full node.
 func Register(stack *node.Node, backend *eth.Ethereum) error {
-	log.Warn("Catalyst mode enabled", "protocol", "eth")
+	log.Warn("Engine API enabled", "protocol", "eth")
 	stack.RegisterAPIs([]rpc.API{
 		{
 			Namespace:     "engine",
@@ -62,7 +62,7 @@ type ConsensusAPI struct {
 // The underlying blockchain needs to have a valid terminal total difficulty set.
 func NewConsensusAPI(eth *eth.Ethereum) *ConsensusAPI {
 	if eth.BlockChain().Config().TerminalTotalDifficulty == nil {
-		log.Warn("Catalyst started without valid total difficulty")
+		panic("Engine API started without valid total difficulty")
 	}
 	return &ConsensusAPI{
 		eth:          eth,
@@ -73,7 +73,7 @@ func NewConsensusAPI(eth *eth.Ethereum) *ConsensusAPI {
 
 // ForkchoiceUpdatedV1 has several responsibilities:
 // If the method is called with an empty head block:
-// 		we return success, which can be used to check if the catalyst mode is enabled
+// 		we return success, which can be used to check if the engine API is enabled
 // If the total difficulty was not reached:
 // 		we return INVALID
 // If the finalizedBlockHash is set: