refactor: move EngineValidator setup to RpcAddOns (#11850)

Cargo.lock

@@ -7495,7 +7495,6 @@ dependencies = [
  "reth-consensus",
  "reth-db",
  "reth-db-common",
- "reth-ethereum-engine-primitives",
  "reth-evm",
  "reth-execution-types",
  "reth-exex",

crates/ethereum/node/src/node.rs

@@ -12,15 +12,16 @@ use reth_ethereum_engine_primitives::{
 use reth_evm_ethereum::execute::EthExecutorProvider;
 use reth_network::NetworkHandle;
 use reth_node_api::{
-    ConfigureEvm, EngineValidator, FullNodeComponents, NodePrimitives, NodeTypesWithDB,
+    AddOnsContext, ConfigureEvm, EngineValidator, FullNodeComponents, NodePrimitives,
+    NodeTypesWithDB,
 };
 use reth_node_builder::{
     components::{
-        ComponentsBuilder, ConsensusBuilder, EngineValidatorBuilder, ExecutorBuilder,
-        NetworkBuilder, PayloadServiceBuilder, PoolBuilder,
+        ComponentsBuilder, ConsensusBuilder, ExecutorBuilder, NetworkBuilder,
+        PayloadServiceBuilder, PoolBuilder,
     },
     node::{FullNodeTypes, NodeTypes, NodeTypesWithEngine},
-    rpc::RpcAddOns,
+    rpc::{EngineValidatorBuilder, RpcAddOns},
     BuilderContext, Node, NodeAdapter, NodeComponentsBuilder, PayloadBuilderConfig, PayloadTypes,
 };
 use reth_payload_builder::{PayloadBuilderHandle, PayloadBuilderService};
@@ -57,7 +58,6 @@ impl EthereumNode {
         EthereumNetworkBuilder,
         EthereumExecutorBuilder,
         EthereumConsensusBuilder,
-        EthereumEngineValidatorBuilder,
     >
     where
         Node: FullNodeTypes<Types: NodeTypes<ChainSpec = ChainSpec>>,
@@ -74,7 +74,6 @@ impl EthereumNode {
             .network(EthereumNetworkBuilder::default())
             .executor(EthereumExecutorBuilder::default())
             .consensus(EthereumConsensusBuilder::default())
-            .engine_validator(EthereumEngineValidatorBuilder::default())
     }
 }
 
@@ -96,6 +95,7 @@ pub type EthereumAddOns<N> = RpcAddOns<
         NetworkHandle,
         <N as FullNodeComponents>::Evm,
     >,
+    EthereumEngineValidatorBuilder,
 >;
 
 impl<Types, N> Node<N> for EthereumNode
@@ -110,7 +110,6 @@ where
         EthereumNetworkBuilder,
         EthereumExecutorBuilder,
         EthereumConsensusBuilder,
-        EthereumEngineValidatorBuilder,
     >;
 
     type AddOns = EthereumAddOns<
@@ -347,12 +346,12 @@ pub struct EthereumEngineValidatorBuilder;
 impl<Node, Types> EngineValidatorBuilder<Node> for EthereumEngineValidatorBuilder
 where
     Types: NodeTypesWithEngine<ChainSpec = ChainSpec>,
-    Node: FullNodeTypes<Types = Types>,
+    Node: FullNodeComponents<Types = Types>,
     EthereumEngineValidator: EngineValidator<Types::Engine>,
 {
     type Validator = EthereumEngineValidator;
 
-    async fn build_validator(self, ctx: &BuilderContext<Node>) -> eyre::Result<Self::Validator> {
-        Ok(EthereumEngineValidator::new(ctx.chain_spec()))
+    async fn build(self, ctx: &AddOnsContext<'_, Node>) -> eyre::Result<Self::Validator> {
+        Ok(EthereumEngineValidator::new(ctx.config.chain.clone()))
     }
 }

crates/exex/test-utils/Cargo.toml

@@ -31,7 +31,6 @@ reth-primitives.workspace = true
 reth-provider = { workspace = true, features = ["test-utils"] }
 reth-tasks.workspace = true
 reth-transaction-pool = { workspace = true, features = ["test-utils"] }
-reth-ethereum-engine-primitives.workspace = true
 
 ## async
 futures-util.workspace = true

crates/exex/test-utils/src/lib.rs

@@ -24,7 +24,6 @@ use reth_db::{
     DatabaseEnv,
 };
 use reth_db_common::init::init_genesis;
-use reth_ethereum_engine_primitives::EthereumEngineValidator;
 use reth_evm::test_utils::MockExecutorProvider;
 use reth_execution_types::Chain;
 use reth_exex::{ExExContext, ExExEvent, ExExNotification, ExExNotifications, Wal};
@@ -41,10 +40,7 @@ use reth_node_builder::{
 };
 use reth_node_core::node_config::NodeConfig;
 use reth_node_ethereum::{
-    node::{
-        EthereumAddOns, EthereumEngineValidatorBuilder, EthereumNetworkBuilder,
-        EthereumPayloadBuilder,
-    },
+    node::{EthereumAddOns, EthereumNetworkBuilder, EthereumPayloadBuilder},
     EthEngineTypes, EthEvmConfig,
 };
 use reth_payload_builder::noop::NoopPayloadBuilderService;
@@ -140,7 +136,6 @@ where
         EthereumNetworkBuilder,
         TestExecutorBuilder,
         TestConsensusBuilder,
-        EthereumEngineValidatorBuilder,
     >;
     type AddOns = EthereumAddOns<
         NodeAdapter<N, <Self::ComponentsBuilder as NodeComponentsBuilder<N>>::Components>,
@@ -154,7 +149,6 @@ where
             .network(EthereumNetworkBuilder::default())
             .executor(TestExecutorBuilder::default())
             .consensus(TestConsensusBuilder::default())
-            .engine_validator(EthereumEngineValidatorBuilder::default())
     }
 
     fn add_ons(&self) -> Self::AddOns {
@@ -284,8 +278,6 @@ pub async fn test_exex_context_with_chain_spec(
     let tasks = TaskManager::current();
     let task_executor = tasks.executor();
 
-    let engine_validator = EthereumEngineValidator::new(chain_spec.clone());
-
     let components = NodeAdapter::<FullNodeTypesAdapter<NodeTypesWithDBAdapter<TestNode, _>, _>, _> {
         components: Components {
             transaction_pool,
@@ -294,7 +286,6 @@ pub async fn test_exex_context_with_chain_spec(
             consensus,
             network,
             payload_builder,
-            engine_validator,
         },
         task_executor,
         provider,

crates/node/api/src/node.rs

@@ -5,7 +5,6 @@ use std::{future::Future, marker::PhantomData};
 use alloy_rpc_types_engine::JwtSecret;
 use reth_beacon_consensus::BeaconConsensusEngineHandle;
 use reth_consensus::Consensus;
-use reth_engine_primitives::EngineValidator;
 use reth_evm::execute::BlockExecutorProvider;
 use reth_network_api::FullNetwork;
 use reth_node_core::node_config::NodeConfig;
@@ -64,9 +63,6 @@ pub trait FullNodeComponents: FullNodeTypes + Clone + 'static {
     /// Network API.
     type Network: FullNetwork;
 
-    /// Validator for the engine API.
-    type EngineValidator: EngineValidator<<Self::Types as NodeTypesWithEngine>::Engine>;
-
     /// Returns the transaction pool of the node.
     fn pool(&self) -> &Self::Pool;
 
@@ -87,9 +83,6 @@ pub trait FullNodeComponents: FullNodeTypes + Clone + 'static {
         &self,
     ) -> &PayloadBuilderHandle<<Self::Types as NodeTypesWithEngine>::Engine>;
 
-    /// Returns the engine validator.
-    fn engine_validator(&self) -> &Self::EngineValidator;
-
     /// Returns the provider of the node.
     fn provider(&self) -> &Self::Provider;
 

crates/node/builder/src/builder/states.rs

@@ -97,7 +97,6 @@ impl<T: FullNodeTypes, C: NodeComponents<T>> FullNodeComponents for NodeAdapter<
     type Executor = C::Executor;
     type Network = C::Network;
     type Consensus = C::Consensus;
-    type EngineValidator = C::EngineValidator;
 
     fn pool(&self) -> &Self::Pool {
         self.components.pool()
@@ -130,10 +129,6 @@ impl<T: FullNodeTypes, C: NodeComponents<T>> FullNodeComponents for NodeAdapter<
     fn consensus(&self) -> &Self::Consensus {
         self.components.consensus()
     }
-
-    fn engine_validator(&self) -> &Self::EngineValidator {
-        self.components.engine_validator()
-    }
 }
 
 impl<T: FullNodeTypes, C: NodeComponents<T>> Clone for NodeAdapter<T, C> {

crates/node/builder/src/components/builder.rs

@@ -4,7 +4,6 @@ use std::{future::Future, marker::PhantomData};
 
 use reth_consensus::Consensus;
 use reth_evm::execute::BlockExecutorProvider;
-use reth_node_api::{EngineValidator, NodeTypesWithEngine};
 use reth_primitives::Header;
 use reth_transaction_pool::TransactionPool;
 
@@ -16,8 +15,6 @@ use crate::{
     BuilderContext, ConfigureEvm, FullNodeTypes,
 };
 
-use super::EngineValidatorBuilder;
-
 /// A generic, general purpose and customizable [`NodeComponentsBuilder`] implementation.
 ///
 /// This type is stateful and captures the configuration of the node's components.
@@ -38,23 +35,22 @@ use super::EngineValidatorBuilder;
 /// All component builders are captured in the builder state and will be consumed once the node is
 /// launched.
 #[derive(Debug)]
-pub struct ComponentsBuilder<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB, EVB> {
+pub struct ComponentsBuilder<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB> {
     pool_builder: PoolB,
     payload_builder: PayloadB,
     network_builder: NetworkB,
     executor_builder: ExecB,
     consensus_builder: ConsB,
-    engine_validator_builder: EVB,
     _marker: PhantomData<Node>,
 }
 
-impl<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB, EVB>
-    ComponentsBuilder<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB, EVB>
+impl<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB>
+    ComponentsBuilder<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB>
 {
     /// Configures the node types.
     pub fn node_types<Types>(
         self,
-    ) -> ComponentsBuilder<Types, PoolB, PayloadB, NetworkB, ExecB, ConsB, EVB>
+    ) -> ComponentsBuilder<Types, PoolB, PayloadB, NetworkB, ExecB, ConsB>
     where
         Types: FullNodeTypes,
     {
@@ -64,7 +60,6 @@ impl<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB, EVB>
             network_builder,
             executor_builder: evm_builder,
             consensus_builder,
-            engine_validator_builder,
             _marker,
         } = self;
         ComponentsBuilder {
@@ -73,7 +68,6 @@ impl<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB, EVB>
             payload_builder,
             network_builder,
             consensus_builder,
-            engine_validator_builder,
             _marker: Default::default(),
         }
     }
@@ -86,7 +80,6 @@ impl<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB, EVB>
             network_builder: self.network_builder,
             executor_builder: self.executor_builder,
             consensus_builder: self.consensus_builder,
-            engine_validator_builder: self.engine_validator_builder,
             _marker: self._marker,
         }
     }
@@ -99,7 +92,6 @@ impl<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB, EVB>
             network_builder: self.network_builder,
             executor_builder: self.executor_builder,
             consensus_builder: self.consensus_builder,
-            engine_validator_builder: self.engine_validator_builder,
             _marker: self._marker,
         }
     }
@@ -112,7 +104,6 @@ impl<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB, EVB>
             network_builder: f(self.network_builder),
             executor_builder: self.executor_builder,
             consensus_builder: self.consensus_builder,
-            engine_validator_builder: self.engine_validator_builder,
             _marker: self._marker,
         }
     }
@@ -125,7 +116,6 @@ impl<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB, EVB>
             network_builder: self.network_builder,
             executor_builder: f(self.executor_builder),
             consensus_builder: self.consensus_builder,
-            engine_validator_builder: self.engine_validator_builder,
             _marker: self._marker,
         }
     }
@@ -138,14 +128,13 @@ impl<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB, EVB>
             network_builder: self.network_builder,
             executor_builder: self.executor_builder,
             consensus_builder: f(self.consensus_builder),
-            engine_validator_builder: self.engine_validator_builder,
             _marker: self._marker,
         }
     }
 }
 
-impl<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB, EVB>
-    ComponentsBuilder<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB, EVB>
+impl<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB>
+    ComponentsBuilder<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB>
 where
     Node: FullNodeTypes,
 {
@@ -156,7 +145,7 @@ where
     pub fn pool<PB>(
         self,
         pool_builder: PB,
-    ) -> ComponentsBuilder<Node, PB, PayloadB, NetworkB, ExecB, ConsB, EVB>
+    ) -> ComponentsBuilder<Node, PB, PayloadB, NetworkB, ExecB, ConsB>
     where
         PB: PoolBuilder<Node>,
     {
@@ -166,7 +155,6 @@ where
             network_builder,
             executor_builder: evm_builder,
             consensus_builder,
-            engine_validator_builder,
             _marker,
         } = self;
         ComponentsBuilder {
@@ -175,14 +163,13 @@ where
             network_builder,
             executor_builder: evm_builder,
             consensus_builder,
-            engine_validator_builder,
             _marker,
         }
     }
 }
 
-impl<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB, EVB>
-    ComponentsBuilder<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB, EVB>
+impl<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB>
+    ComponentsBuilder<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB>
 where
     Node: FullNodeTypes,
     PoolB: PoolBuilder<Node>,
@@ -194,7 +181,7 @@ where
     pub fn network<NB>(
         self,
         network_builder: NB,
-    ) -> ComponentsBuilder<Node, PoolB, PayloadB, NB, ExecB, ConsB, EVB>
+    ) -> ComponentsBuilder<Node, PoolB, PayloadB, NB, ExecB, ConsB>
     where
         NB: NetworkBuilder<Node, PoolB::Pool>,
     {
@@ -204,7 +191,6 @@ where
             network_builder: _,
             executor_builder: evm_builder,
             consensus_builder,
-            engine_validator_builder,
             _marker,
         } = self;
         ComponentsBuilder {
@@ -213,7 +199,6 @@ where
             network_builder,
             executor_builder: evm_builder,
             consensus_builder,
-            engine_validator_builder,
             _marker,
         }
     }
@@ -225,7 +210,7 @@ where
     pub fn payload<PB>(
         self,
         payload_builder: PB,
-    ) -> ComponentsBuilder<Node, PoolB, PB, NetworkB, ExecB, ConsB, EVB>
+    ) -> ComponentsBuilder<Node, PoolB, PB, NetworkB, ExecB, ConsB>
     where
         PB: PayloadServiceBuilder<Node, PoolB::Pool>,
     {
@@ -235,7 +220,6 @@ where
             network_builder,
             executor_builder: evm_builder,
             consensus_builder,
-            engine_validator_builder,
             _marker,
         } = self;
         ComponentsBuilder {
@@ -244,7 +228,6 @@ where
             network_builder,
             executor_builder: evm_builder,
             consensus_builder,
-            engine_validator_builder,
             _marker,
         }
     }
@@ -256,7 +239,7 @@ where
     pub fn executor<EB>(
         self,
         executor_builder: EB,
-    ) -> ComponentsBuilder<Node, PoolB, PayloadB, NetworkB, EB, ConsB, EVB>
+    ) -> ComponentsBuilder<Node, PoolB, PayloadB, NetworkB, EB, ConsB>
     where
         EB: ExecutorBuilder<Node>,
     {
@@ -266,7 +249,6 @@ where
             network_builder,
             executor_builder: _,
             consensus_builder,
-            engine_validator_builder,
             _marker,
         } = self;
         ComponentsBuilder {
@@ -275,7 +257,6 @@ where
             network_builder,
             executor_builder,
             consensus_builder,
-            engine_validator_builder,
             _marker,
         }
     }
@@ -287,7 +268,7 @@ where
     pub fn consensus<CB>(
         self,
         consensus_builder: CB,
-    ) -> ComponentsBuilder<Node, PoolB, PayloadB, NetworkB, ExecB, CB, EVB>
+    ) -> ComponentsBuilder<Node, PoolB, PayloadB, NetworkB, ExecB, CB>
     where
         CB: ConsensusBuilder<Node>,
     {
@@ -297,38 +278,7 @@ where
             network_builder,
             executor_builder,
             consensus_builder: _,
-            engine_validator_builder,
-            _marker,
-        } = self;
-        ComponentsBuilder {
-            pool_builder,
-            payload_builder,
-            network_builder,
-            executor_builder,
-            consensus_builder,
-            engine_validator_builder,
-            _marker,
-        }
-    }
 
-    /// Configures the consensus builder.
-    ///
-    /// This accepts a [`ConsensusBuilder`] instance that will be used to create the node's
-    /// components for consensus.
-    pub fn engine_validator<EngineVB>(
-        self,
-        engine_validator_builder: EngineVB,
-    ) -> ComponentsBuilder<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB, EngineVB>
-    where
-        EngineVB: EngineValidatorBuilder<Node>,
-    {
-        let Self {
-            pool_builder,
-            payload_builder,
-            network_builder,
-            executor_builder,
-            consensus_builder,
-            engine_validator_builder: _,
             _marker,
         } = self;
         ComponentsBuilder {
@@ -337,14 +287,13 @@ where
             network_builder,
             executor_builder,
             consensus_builder,
-            engine_validator_builder,
             _marker,
         }
     }
 }
 
-impl<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB, EVB> NodeComponentsBuilder<Node>
-    for ComponentsBuilder<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB, EVB>
+impl<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB> NodeComponentsBuilder<Node>
+    for ComponentsBuilder<Node, PoolB, PayloadB, NetworkB, ExecB, ConsB>
 where
     Node: FullNodeTypes,
     PoolB: PoolBuilder<Node>,
@@ -352,16 +301,8 @@ where
     PayloadB: PayloadServiceBuilder<Node, PoolB::Pool>,
     ExecB: ExecutorBuilder<Node>,
     ConsB: ConsensusBuilder<Node>,
-    EVB: EngineValidatorBuilder<Node>,
 {
-    type Components = Components<
-        Node,
-        PoolB::Pool,
-        ExecB::EVM,
-        ExecB::Executor,
-        ConsB::Consensus,
-        EVB::Validator,
-    >;
+    type Components = Components<Node, PoolB::Pool, ExecB::EVM, ExecB::Executor, ConsB::Consensus>;
 
     async fn build_components(
         self,
@@ -373,7 +314,6 @@ where
             network_builder,
             executor_builder: evm_builder,
             consensus_builder,
-            engine_validator_builder,
             _marker,
         } = self;
 
@@ -382,7 +322,6 @@ where
         let network = network_builder.build_network(context, pool.clone()).await?;
         let payload_builder = payload_builder.spawn_payload_service(context, pool.clone()).await?;
         let consensus = consensus_builder.build_consensus(context).await?;
-        let engine_validator = engine_validator_builder.build_validator(context).await?;
 
         Ok(Components {
             transaction_pool: pool,
@@ -391,12 +330,11 @@ where
             payload_builder,
             executor,
             consensus,
-            engine_validator,
         })
     }
 }
 
-impl Default for ComponentsBuilder<(), (), (), (), (), (), ()> {
+impl Default for ComponentsBuilder<(), (), (), (), (), ()> {
     fn default() -> Self {
         Self {
             pool_builder: (),
@@ -404,7 +342,6 @@ impl Default for ComponentsBuilder<(), (), (), (), (), (), ()> {
             network_builder: (),
             executor_builder: (),
             consensus_builder: (),
-            engine_validator_builder: (),
             _marker: Default::default(),
         }
     }
@@ -430,18 +367,17 @@ pub trait NodeComponentsBuilder<Node: FullNodeTypes>: Send {
     ) -> impl Future<Output = eyre::Result<Self::Components>> + Send;
 }
 
-impl<Node, F, Fut, Pool, EVM, Executor, Cons, Val> NodeComponentsBuilder<Node> for F
+impl<Node, F, Fut, Pool, EVM, Executor, Cons> NodeComponentsBuilder<Node> for F
 where
     Node: FullNodeTypes,
     F: FnOnce(&BuilderContext<Node>) -> Fut + Send,
-    Fut: Future<Output = eyre::Result<Components<Node, Pool, EVM, Executor, Cons, Val>>> + Send,
+    Fut: Future<Output = eyre::Result<Components<Node, Pool, EVM, Executor, Cons>>> + Send,
     Pool: TransactionPool + Unpin + 'static,
     EVM: ConfigureEvm<Header = Header>,
     Executor: BlockExecutorProvider,
     Cons: Consensus + Clone + Unpin + 'static,
-    Val: EngineValidator<<Node::Types as NodeTypesWithEngine>::Engine> + Clone + Unpin + 'static,
 {
-    type Components = Components<Node, Pool, EVM, Executor, Cons, Val>;
+    type Components = Components<Node, Pool, EVM, Executor, Cons>;
 
     fn build_components(
         self,

crates/node/builder/src/components/engine.rs

@@ -1,38 +0,0 @@
-//! Consensus component for the node builder.
-use reth_node_api::{EngineValidator, NodeTypesWithEngine};
-
-use crate::{BuilderContext, FullNodeTypes};
-use std::future::Future;
-
-/// A type that knows how to build the engine validator.
-pub trait EngineValidatorBuilder<Node: FullNodeTypes>: Send {
-    /// The consensus implementation to build.
-    type Validator: EngineValidator<<Node::Types as NodeTypesWithEngine>::Engine>
-        + Clone
-        + Unpin
-        + 'static;
-
-    /// Creates the engine validator.
-    fn build_validator(
-        self,
-        ctx: &BuilderContext<Node>,
-    ) -> impl Future<Output = eyre::Result<Self::Validator>> + Send;
-}
-
-impl<Node, F, Fut, Validator> EngineValidatorBuilder<Node> for F
-where
-    Node: FullNodeTypes,
-    Validator:
-        EngineValidator<<Node::Types as NodeTypesWithEngine>::Engine> + Clone + Unpin + 'static,
-    F: FnOnce(&BuilderContext<Node>) -> Fut + Send,
-    Fut: Future<Output = eyre::Result<Validator>> + Send,
-{
-    type Validator = Validator;
-
-    fn build_validator(
-        self,
-        ctx: &BuilderContext<Node>,
-    ) -> impl Future<Output = eyre::Result<Self::Validator>> {
-        self(ctx)
-    }
-}

crates/node/builder/src/components/mod.rs

@@ -9,7 +9,6 @@
 
 mod builder;
 mod consensus;
-mod engine;
 mod execute;
 mod network;
 mod payload;
@@ -17,7 +16,6 @@ mod pool;
 
 pub use builder::*;
 pub use consensus::*;
-pub use engine::*;
 pub use execute::*;
 pub use network::*;
 pub use payload::*;
@@ -27,7 +25,7 @@ use reth_consensus::Consensus;
 use reth_evm::execute::BlockExecutorProvider;
 use reth_network::NetworkHandle;
 use reth_network_api::FullNetwork;
-use reth_node_api::{EngineValidator, NodeTypesWithEngine};
+use reth_node_api::NodeTypesWithEngine;
 use reth_payload_builder::PayloadBuilderHandle;
 use reth_primitives::Header;
 use reth_transaction_pool::TransactionPool;
@@ -55,9 +53,6 @@ pub trait NodeComponents<T: FullNodeTypes>: Clone + Unpin + Send + Sync + 'stati
     /// Network API.
     type Network: FullNetwork;
 
-    /// Validator for the engine API.
-    type EngineValidator: EngineValidator<<T::Types as NodeTypesWithEngine>::Engine>;
-
     /// Returns the transaction pool of the node.
     fn pool(&self) -> &Self::Pool;
 
@@ -75,16 +70,13 @@ pub trait NodeComponents<T: FullNodeTypes>: Clone + Unpin + Send + Sync + 'stati
 
     /// Returns the handle to the payload builder service.
     fn payload_builder(&self) -> &PayloadBuilderHandle<<T::Types as NodeTypesWithEngine>::Engine>;
-
-    /// Returns the engine validator.
-    fn engine_validator(&self) -> &Self::EngineValidator;
 }
 
 /// All the components of the node.
 ///
 /// This provides access to all the components of the node.
 #[derive(Debug)]
-pub struct Components<Node: FullNodeTypes, Pool, EVM, Executor, Consensus, Validator> {
+pub struct Components<Node: FullNodeTypes, Pool, EVM, Executor, Consensus> {
     /// The transaction pool of the node.
     pub transaction_pool: Pool,
     /// The node's EVM configuration, defining settings for the Ethereum Virtual Machine.
@@ -97,26 +89,22 @@ pub struct Components<Node: FullNodeTypes, Pool, EVM, Executor, Consensus, Valid
     pub network: NetworkHandle,
     /// The handle to the payload builder service.
     pub payload_builder: PayloadBuilderHandle<<Node::Types as NodeTypesWithEngine>::Engine>,
-    /// The validator for the engine API.
-    pub engine_validator: Validator,
 }
 
-impl<Node, Pool, EVM, Executor, Cons, Val> NodeComponents<Node>
-    for Components<Node, Pool, EVM, Executor, Cons, Val>
+impl<Node, Pool, EVM, Executor, Cons> NodeComponents<Node>
+    for Components<Node, Pool, EVM, Executor, Cons>
 where
     Node: FullNodeTypes,
     Pool: TransactionPool + Unpin + 'static,
     EVM: ConfigureEvm<Header = Header>,
     Executor: BlockExecutorProvider,
     Cons: Consensus + Clone + Unpin + 'static,
-    Val: EngineValidator<<Node::Types as NodeTypesWithEngine>::Engine> + Clone + Unpin + 'static,
 {
     type Pool = Pool;
     type Evm = EVM;
     type Executor = Executor;
     type Consensus = Cons;
     type Network = NetworkHandle;
-    type EngineValidator = Val;
 
     fn pool(&self) -> &Self::Pool {
         &self.transaction_pool
@@ -143,21 +131,15 @@ where
     ) -> &PayloadBuilderHandle<<Node::Types as NodeTypesWithEngine>::Engine> {
         &self.payload_builder
     }
-
-    fn engine_validator(&self) -> &Self::EngineValidator {
-        &self.engine_validator
-    }
 }
 
-impl<Node, Pool, EVM, Executor, Cons, Val> Clone
-    for Components<Node, Pool, EVM, Executor, Cons, Val>
+impl<Node, Pool, EVM, Executor, Cons> Clone for Components<Node, Pool, EVM, Executor, Cons>
 where
     Node: FullNodeTypes,
     Pool: TransactionPool,
     EVM: ConfigureEvm<Header = Header>,
     Executor: BlockExecutorProvider,
     Cons: Consensus + Clone,
-    Val: EngineValidator<<Node::Types as NodeTypesWithEngine>::Engine>,
 {
     fn clone(&self) -> Self {
         Self {
@@ -167,7 +149,6 @@ where
             consensus: self.consensus.clone(),
             network: self.network.clone(),
             payload_builder: self.payload_builder.clone(),
-            engine_validator: self.engine_validator.clone(),
         }
     }
 }

crates/node/builder/src/rpc.rs

@@ -2,6 +2,7 @@
 
 use std::{
     fmt::{self, Debug},
+    future::Future,
     marker::PhantomData,
     ops::{Deref, DerefMut},
 };
@@ -9,7 +10,7 @@ use std::{
 use alloy_rpc_types::engine::ClientVersionV1;
 use futures::TryFutureExt;
 use reth_node_api::{
-    AddOnsContext, FullNodeComponents, NodeAddOns, NodeTypes, NodeTypesWithEngine,
+    AddOnsContext, EngineValidator, FullNodeComponents, NodeAddOns, NodeTypes, NodeTypesWithEngine,
 };
 use reth_node_core::{
     node_config::NodeConfig,
@@ -327,31 +328,38 @@ where
 
 /// Node add-ons containing RPC server configuration, with customizable eth API handler.
 #[allow(clippy::type_complexity)]
-pub struct RpcAddOns<Node: FullNodeComponents, EthApi: EthApiTypes> {
+pub struct RpcAddOns<Node: FullNodeComponents, EthApi: EthApiTypes, EV> {
     /// Additional RPC add-ons.
     pub hooks: RpcHooks<Node, EthApi>,
     /// Builder for `EthApi`
     eth_api_builder: Box<dyn FnOnce(&EthApiBuilderCtx<Node>) -> EthApi + Send + Sync>,
+    /// Engine validator
+    engine_validator_builder: EV,
     _pd: PhantomData<(Node, EthApi)>,
 }
 
-impl<Node: FullNodeComponents, EthApi: EthApiTypes> Debug for RpcAddOns<Node, EthApi> {
+impl<Node: FullNodeComponents, EthApi: EthApiTypes, EV: Debug> Debug
+    for RpcAddOns<Node, EthApi, EV>
+{
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         f.debug_struct("RpcAddOns")
             .field("hooks", &self.hooks)
             .field("eth_api_builder", &"...")
+            .field("engine_validator_builder", &self.engine_validator_builder)
             .finish()
     }
 }
 
-impl<Node: FullNodeComponents, EthApi: EthApiTypes> RpcAddOns<Node, EthApi> {
+impl<Node: FullNodeComponents, EthApi: EthApiTypes, EV> RpcAddOns<Node, EthApi, EV> {
     /// Creates a new instance of the RPC add-ons.
     pub fn new(
         eth_api_builder: impl FnOnce(&EthApiBuilderCtx<Node>) -> EthApi + Send + Sync + 'static,
+        engine_validator_builder: EV,
     ) -> Self {
         Self {
             hooks: RpcHooks::default(),
             eth_api_builder: Box::new(eth_api_builder),
+            engine_validator_builder,
             _pd: PhantomData,
         }
     }
@@ -377,23 +385,28 @@ impl<Node: FullNodeComponents, EthApi: EthApiTypes> RpcAddOns<Node, EthApi> {
     }
 }
 
-impl<Node: FullNodeComponents, EthApi: EthApiTypes + EthApiBuilder<Node>> Default
-    for RpcAddOns<Node, EthApi>
+impl<Node, EthApi, EV> Default for RpcAddOns<Node, EthApi, EV>
+where
+    Node: FullNodeComponents,
+    EthApi: EthApiTypes + EthApiBuilder<Node>,
+    EV: Default,
 {
     fn default() -> Self {
-        Self::new(EthApi::build)
+        Self::new(EthApi::build, EV::default())
     }
 }
 
-impl<N, EthApi> NodeAddOns<N> for RpcAddOns<N, EthApi>
+impl<N, EthApi, EV> NodeAddOns<N> for RpcAddOns<N, EthApi, EV>
 where
     N: FullNodeComponents<Types: ProviderNodeTypes>,
     EthApi: EthApiTypes + FullEthApiServer + AddDevSigners + Unpin + 'static,
+    EV: EngineValidatorBuilder<N>,
 {
     type Handle = RpcHandle<N, EthApi>;
 
     async fn launch_add_ons(self, ctx: AddOnsContext<'_, N>) -> eyre::Result<Self::Handle> {
         let AddOnsContext { node, config, beacon_engine_handle, jwt_secret } = ctx;
+        let Self { eth_api_builder, engine_validator_builder, hooks, _pd: _ } = self;
 
         let client = ClientVersionV1 {
             code: CLIENT_CODE,
@@ -411,7 +424,7 @@ where
             Box::new(node.task_executor().clone()),
             client,
             EngineCapabilities::default(),
-            node.engine_validator().clone(),
+            engine_validator_builder.build(&ctx).await?,
         );
         info!(target: "reth::cli", "Engine API handler initialized");
 
@@ -427,7 +440,7 @@ where
             .with_executor(node.task_executor().clone())
             .with_evm_config(node.evm_config().clone())
             .with_block_executor(node.block_executor().clone())
-            .build_with_auth_server(module_config, engine_api, self.eth_api_builder);
+            .build_with_auth_server(module_config, engine_api, eth_api_builder);
 
         // in dev mode we generate 20 random dev-signer accounts
         if config.dev.dev {
@@ -443,7 +456,7 @@ where
             auth_module: &mut auth_module,
         };
 
-        let RpcHooks { on_rpc_started, extend_rpc_modules } = self.hooks;
+        let RpcHooks { on_rpc_started, extend_rpc_modules } = hooks;
 
         extend_rpc_modules.extend_rpc_modules(ctx)?;
 
@@ -503,7 +516,7 @@ pub trait RethRpcAddOns<N: FullNodeComponents>:
     fn hooks_mut(&mut self) -> &mut RpcHooks<N, Self::EthApi>;
 }
 
-impl<N: FullNodeComponents, EthApi: EthApiTypes> RethRpcAddOns<N> for RpcAddOns<N, EthApi>
+impl<N: FullNodeComponents, EthApi: EthApiTypes, EV> RethRpcAddOns<N> for RpcAddOns<N, EthApi, EV>
 where
     Self: NodeAddOns<N, Handle = RpcHandle<N, EthApi>>,
 {
@@ -525,3 +538,36 @@ impl<N: FullNodeComponents> EthApiBuilder<N> for EthApi<N::Provider, N::Pool, N:
         Self::with_spawner(ctx)
     }
 }
+
+/// A type that knows how to build the engine validator.
+pub trait EngineValidatorBuilder<Node: FullNodeComponents>: Send {
+    /// The consensus implementation to build.
+    type Validator: EngineValidator<<Node::Types as NodeTypesWithEngine>::Engine>
+        + Clone
+        + Unpin
+        + 'static;
+
+    /// Creates the engine validator.
+    fn build(
+        self,
+        ctx: &AddOnsContext<'_, Node>,
+    ) -> impl Future<Output = eyre::Result<Self::Validator>> + Send;
+}
+
+impl<Node, F, Fut, Validator> EngineValidatorBuilder<Node> for F
+where
+    Node: FullNodeComponents,
+    Validator:
+        EngineValidator<<Node::Types as NodeTypesWithEngine>::Engine> + Clone + Unpin + 'static,
+    F: FnOnce(&AddOnsContext<'_, Node>) -> Fut + Send,
+    Fut: Future<Output = eyre::Result<Validator>> + Send,
+{
+    type Validator = Validator;
+
+    fn build(
+        self,
+        ctx: &AddOnsContext<'_, Node>,
+    ) -> impl Future<Output = eyre::Result<Self::Validator>> {
+        self(ctx)
+    }
+}

crates/optimism/node/src/node.rs

@@ -6,14 +6,16 @@ use reth_basic_payload_builder::{BasicPayloadJobGenerator, BasicPayloadJobGenera
 use reth_chainspec::{EthChainSpec, Hardforks};
 use reth_evm::ConfigureEvm;
 use reth_network::{NetworkConfig, NetworkHandle, NetworkManager};
-use reth_node_api::{EngineValidator, FullNodeComponents, NodeAddOns, NodePrimitives};
+use reth_node_api::{
+    AddOnsContext, EngineValidator, FullNodeComponents, NodeAddOns, NodePrimitives,
+};
 use reth_node_builder::{
     components::{
-        ComponentsBuilder, ConsensusBuilder, EngineValidatorBuilder, ExecutorBuilder,
-        NetworkBuilder, PayloadServiceBuilder, PoolBuilder, PoolBuilderConfigOverrides,
+        ComponentsBuilder, ConsensusBuilder, ExecutorBuilder, NetworkBuilder,
+        PayloadServiceBuilder, PoolBuilder, PoolBuilderConfigOverrides,
     },
     node::{FullNodeTypes, NodeTypes, NodeTypesWithEngine},
-    rpc::{RethRpcAddOns, RpcAddOns, RpcHandle},
+    rpc::{EngineValidatorBuilder, RethRpcAddOns, RpcAddOns, RpcHandle},
     BuilderContext, Node, NodeAdapter, NodeComponentsBuilder, PayloadBuilderConfig,
 };
 use reth_optimism_chainspec::OpChainSpec;
@@ -68,7 +70,6 @@ impl OptimismNode {
         OptimismNetworkBuilder,
         OptimismExecutorBuilder,
         OptimismConsensusBuilder,
-        OptimismEngineValidatorBuilder,
     >
     where
         Node: FullNodeTypes<
@@ -86,7 +87,6 @@ impl OptimismNode {
             })
             .executor(OptimismExecutorBuilder::default())
             .consensus(OptimismConsensusBuilder::default())
-            .engine_validator(OptimismEngineValidatorBuilder::default())
     }
 }
 
@@ -103,7 +103,6 @@ where
         OptimismNetworkBuilder,
         OptimismExecutorBuilder,
         OptimismConsensusBuilder,
-        OptimismEngineValidatorBuilder,
     >;
 
     type AddOns = OptimismAddOns<
@@ -131,7 +130,9 @@ impl NodeTypesWithEngine for OptimismNode {
 
 /// Add-ons w.r.t. optimism.
 #[derive(Debug)]
-pub struct OptimismAddOns<N: FullNodeComponents>(pub RpcAddOns<N, OpEthApi<N>>);
+pub struct OptimismAddOns<N: FullNodeComponents>(
+    pub RpcAddOns<N, OpEthApi<N>, OptimismEngineValidatorBuilder>,
+);
 
 impl<N: FullNodeComponents> Default for OptimismAddOns<N> {
     fn default() -> Self {
@@ -142,12 +143,14 @@ impl<N: FullNodeComponents> Default for OptimismAddOns<N> {
 impl<N: FullNodeComponents> OptimismAddOns<N> {
     /// Create a new instance with the given `sequencer_http` URL.
     pub fn new(sequencer_http: Option<String>) -> Self {
-        Self(RpcAddOns::new(move |ctx| OpEthApi::new(ctx, sequencer_http)))
+        Self(RpcAddOns::new(move |ctx| OpEthApi::new(ctx, sequencer_http), Default::default()))
     }
 }
 
-impl<N: FullNodeComponents<Types: NodeTypes<ChainSpec = OpChainSpec>>> NodeAddOns<N>
-    for OptimismAddOns<N>
+impl<N> NodeAddOns<N> for OptimismAddOns<N>
+where
+    N: FullNodeComponents<Types: NodeTypes<ChainSpec = OpChainSpec>>,
+    OptimismEngineValidator: EngineValidator<<N::Types as NodeTypesWithEngine>::Engine>,
 {
     type Handle = RpcHandle<N, OpEthApi<N>>;
 
@@ -159,8 +162,10 @@ impl<N: FullNodeComponents<Types: NodeTypes<ChainSpec = OpChainSpec>>> NodeAddOn
     }
 }
 
-impl<N: FullNodeComponents<Types: NodeTypes<ChainSpec = OpChainSpec>>> RethRpcAddOns<N>
-    for OptimismAddOns<N>
+impl<N> RethRpcAddOns<N> for OptimismAddOns<N>
+where
+    N: FullNodeComponents<Types: NodeTypes<ChainSpec = OpChainSpec>>,
+    OptimismEngineValidator: EngineValidator<<N::Types as NodeTypesWithEngine>::Engine>,
 {
     type EthApi = OpEthApi<N>;
 
@@ -458,12 +463,12 @@ pub struct OptimismEngineValidatorBuilder;
 impl<Node, Types> EngineValidatorBuilder<Node> for OptimismEngineValidatorBuilder
 where
     Types: NodeTypesWithEngine<ChainSpec = OpChainSpec>,
-    Node: FullNodeTypes<Types = Types>,
+    Node: FullNodeComponents<Types = Types>,
     OptimismEngineValidator: EngineValidator<Types::Engine>,
 {
     type Validator = OptimismEngineValidator;
 
-    async fn build_validator(self, ctx: &BuilderContext<Node>) -> eyre::Result<Self::Validator> {
-        Ok(OptimismEngineValidator::new(ctx.chain_spec()))
+    async fn build(self, ctx: &AddOnsContext<'_, Node>) -> eyre::Result<Self::Validator> {
+        Ok(OptimismEngineValidator::new(ctx.config.chain.clone()))
     }
 }

examples/custom-engine-types/src/main.rs

@@ -34,12 +34,15 @@ use alloy_rpc_types::{
 use reth::{
     api::PayloadTypes,
     builder::{
-        components::{ComponentsBuilder, EngineValidatorBuilder, PayloadServiceBuilder},
+        components::{ComponentsBuilder, PayloadServiceBuilder},
         node::{NodeTypes, NodeTypesWithEngine},
+        rpc::{EngineValidatorBuilder, RpcAddOns},
         BuilderContext, FullNodeTypes, Node, NodeAdapter, NodeBuilder, NodeComponentsBuilder,
         PayloadBuilderConfig,
     },
+    network::NetworkHandle,
     providers::{CanonStateSubscriptions, StateProviderFactory},
+    rpc::eth::EthApi,
     tasks::TaskManager,
     transaction_pool::TransactionPool,
 };
@@ -50,13 +53,13 @@ use reth_basic_payload_builder::{
 use reth_chainspec::{Chain, ChainSpec, ChainSpecProvider};
 use reth_node_api::{
     payload::{EngineApiMessageVersion, EngineObjectValidationError, PayloadOrAttributes},
-    validate_version_specific_fields, EngineTypes, EngineValidator, PayloadAttributes,
-    PayloadBuilderAttributes,
+    validate_version_specific_fields, AddOnsContext, EngineTypes, EngineValidator,
+    FullNodeComponents, PayloadAttributes, PayloadBuilderAttributes,
 };
 use reth_node_core::{args::RpcServerArgs, node_config::NodeConfig};
 use reth_node_ethereum::{
     node::{
-        EthereumAddOns, EthereumConsensusBuilder, EthereumExecutorBuilder, EthereumNetworkBuilder,
+        EthereumConsensusBuilder, EthereumExecutorBuilder, EthereumNetworkBuilder,
         EthereumPoolBuilder,
     },
     EthEvmConfig,
@@ -202,12 +205,14 @@ pub struct CustomEngineValidatorBuilder;
 
 impl<N> EngineValidatorBuilder<N> for CustomEngineValidatorBuilder
 where
-    N: FullNodeTypes<Types: NodeTypesWithEngine<Engine = CustomEngineTypes, ChainSpec = ChainSpec>>,
+    N: FullNodeComponents<
+        Types: NodeTypesWithEngine<Engine = CustomEngineTypes, ChainSpec = ChainSpec>,
+    >,
 {
     type Validator = CustomEngineValidator;
 
-    async fn build_validator(self, ctx: &BuilderContext<N>) -> eyre::Result<Self::Validator> {
-        Ok(CustomEngineValidator { chain_spec: ctx.chain_spec() })
+    async fn build(self, ctx: &AddOnsContext<'_, N>) -> eyre::Result<Self::Validator> {
+        Ok(CustomEngineValidator { chain_spec: ctx.config.chain.clone() })
     }
 }
 
@@ -226,6 +231,18 @@ impl NodeTypesWithEngine for MyCustomNode {
     type Engine = CustomEngineTypes;
 }
 
+/// Custom addons configuring RPC types
+pub type MyNodeAddOns<N> = RpcAddOns<
+    N,
+    EthApi<
+        <N as FullNodeTypes>::Provider,
+        <N as FullNodeComponents>::Pool,
+        NetworkHandle,
+        <N as FullNodeComponents>::Evm,
+    >,
+    CustomEngineValidatorBuilder,
+>;
+
 /// Implement the Node trait for the custom node
 ///
 /// This provides a preset configuration for the node
@@ -240,9 +257,8 @@ where
         EthereumNetworkBuilder,
         EthereumExecutorBuilder,
         EthereumConsensusBuilder,
-        CustomEngineValidatorBuilder,
     >;
-    type AddOns = EthereumAddOns<
+    type AddOns = MyNodeAddOns<
         NodeAdapter<N, <Self::ComponentsBuilder as NodeComponentsBuilder<N>>::Components>,
     >;
 
@@ -254,11 +270,10 @@ where
             .network(EthereumNetworkBuilder::default())
             .executor(EthereumExecutorBuilder::default())
             .consensus(EthereumConsensusBuilder::default())
-            .engine_validator(CustomEngineValidatorBuilder::default())
     }
 
     fn add_ons(&self) -> Self::AddOns {
-        EthereumAddOns::default()
+        MyNodeAddOns::default()
     }
 }