feat: exex crate (#7506)

crates/node-builder/Cargo.toml

@@ -16,6 +16,7 @@ workspace = true
 reth-auto-seal-consensus.workspace = true
 reth-beacon-consensus.workspace = true
 reth-blockchain-tree.workspace = true
+reth-exex.workspace = true
 reth-provider.workspace = true
 reth-revm.workspace = true
 reth-db.workspace = true

crates/node-builder/src/builder.rs

@@ -7,7 +7,7 @@ use crate::{
         ComponentsBuilder, FullNodeComponents, FullNodeComponentsAdapter, NodeComponents,
         NodeComponentsBuilder, PoolBuilder,
     },
-    exex::{BoxedLaunchExEx, ExExContext},
+    exex::BoxedLaunchExEx,
     hooks::NodeHooks,
     node::FullNode,
     rpc::{RethRpcServerHandles, RpcContext, RpcHooks},
@@ -28,6 +28,7 @@ use reth_db::{
     test_utils::{create_test_rw_db, TempDatabase},
     DatabaseEnv,
 };
+use reth_exex::ExExContext;
 use reth_interfaces::p2p::either::EitherDownloader;
 use reth_network::{NetworkBuilder, NetworkConfig, NetworkEvents, NetworkHandle};
 use reth_node_api::{FullNodeTypes, FullNodeTypesAdapter, NodeTypes};

crates/node-builder/src/exex.rs

@@ -25,49 +25,14 @@
 //! `block_number >= 0`.
 //!
 //! [`Future`]: std::future::Future
-//! [`ExExContext`]: crate::exex::ExExContext
+//! [`ExExContext`]: reth_exex::ExExContext
 //! [`CanonStateNotification`]: reth_provider::CanonStateNotification
 
 use crate::FullNodeTypes;
 use futures::{future::BoxFuture, FutureExt};
-use reth_node_core::{
-    dirs::{ChainPath, DataDirPath},
-    node_config::NodeConfig,
-};
-use reth_primitives::{BlockNumber, Head};
-use reth_tasks::TaskExecutor;
+use reth_exex::ExExContext;
 use std::future::Future;
 
-/// Events emitted by an ExEx.
-#[derive(Debug)]
-pub enum ExExEvent {
-    /// Highest block processed by the ExEx.
-    ///
-    /// The ExEx must guarantee that it will not require all earlier blocks in the future, meaning
-    /// that Reth is allowed to prune them.
-    ///
-    /// On reorgs, it's possible for the height to go down.
-    FinishedHeight(BlockNumber),
-}
-
-/// Captures the context that an ExEx has access to.
-#[derive(Clone, Debug)]
-pub struct ExExContext<Node: FullNodeTypes> {
-    /// The current head of the blockchain at launch.
-    pub head: Head,
-    /// The configured provider to interact with the blockchain.
-    pub provider: Node::Provider,
-    /// The task executor of the node.
-    pub task_executor: TaskExecutor,
-    /// The data dir of the node.
-    pub data_dir: ChainPath<DataDirPath>,
-    /// The config of the node
-    pub config: NodeConfig,
-    /// The loaded node config
-    pub reth_config: reth_config::Config,
-    // TODO(alexey): add pool, payload builder, anything else?
-}
-
 /// A trait for launching an ExEx.
 trait LaunchExEx<Node: FullNodeTypes>: Send {
     /// Launches the ExEx.