feat: separate node-builder crate (#6302)

crates/node-optimism/Cargo.toml

@@ -0,0 +1,24 @@
+[package]
+name = "reth-node-optimism"
+version.workspace = true
+edition.workspace = true
+rust-version.workspace = true
+license.workspace = true
+homepage.workspace = true
+repository.workspace = true
+
+[lints]
+workspace = true
+
+[dependencies]
+# reth
+reth-primitives.workspace = true
+reth-payload-builder.workspace = true
+reth-rpc-types.workspace = true
+reth-node-api.workspace = true
+
+# io
+serde.workspace = true
+
+[features]
+optimism = ["reth-node-api/optimism"]

crates/node-optimism/src/engine.rs

@@ -0,0 +1,26 @@
+use reth_node_api::{
+    optimism_validate_version_specific_fields, AttributesValidationError, EngineApiMessageVersion,
+    EngineTypes, PayloadOrAttributes,
+};
+use reth_payload_builder::{EthBuiltPayload, OptimismPayloadBuilderAttributes};
+use reth_primitives::ChainSpec;
+use reth_rpc_types::engine::OptimismPayloadAttributes;
+
+/// The types used in the optimism beacon consensus engine.
+#[derive(Debug, Default, Clone)]
+#[non_exhaustive]
+pub struct OptimismEngineTypes;
+
+impl EngineTypes for OptimismEngineTypes {
+    type PayloadAttributes = OptimismPayloadAttributes;
+    type PayloadBuilderAttributes = OptimismPayloadBuilderAttributes;
+    type BuiltPayload = EthBuiltPayload;
+
+    fn validate_version_specific_fields(
+        chain_spec: &ChainSpec,
+        version: EngineApiMessageVersion,
+        payload_or_attrs: PayloadOrAttributes<'_, OptimismPayloadAttributes>,
+    ) -> Result<(), AttributesValidationError> {
+        optimism_validate_version_specific_fields(chain_spec, version, payload_or_attrs)
+    }
+}

crates/node-optimism/src/evm.rs

@@ -0,0 +1,73 @@
+use reth_node_api::EvmEnvConfig;
+use reth_primitives::{
+    revm::{config::revm_spec, env::fill_op_tx_env},
+    revm_primitives::{AnalysisKind, CfgEnv, TxEnv},
+    Address, Bytes, ChainSpec, Head, Header, Transaction, U256,
+};
+
+/// Optimism-related EVM configuration.
+#[derive(Debug, Default, Clone, Copy)]
+#[non_exhaustive]
+pub struct OptimismEvmConfig;
+
+impl EvmEnvConfig for OptimismEvmConfig {
+    type TxMeta = Bytes;
+
+    fn fill_tx_env<T>(tx_env: &mut TxEnv, transaction: T, sender: Address, meta: Bytes)
+    where
+        T: AsRef<Transaction>,
+    {
+        fill_op_tx_env(tx_env, transaction, sender, meta);
+    }
+
+    fn fill_cfg_env(
+        cfg_env: &mut CfgEnv,
+        chain_spec: &ChainSpec,
+        header: &Header,
+        total_difficulty: U256,
+    ) {
+        let spec_id = revm_spec(
+            chain_spec,
+            Head {
+                number: header.number,
+                timestamp: header.timestamp,
+                difficulty: header.difficulty,
+                total_difficulty,
+                hash: Default::default(),
+            },
+        );
+
+        cfg_env.chain_id = chain_spec.chain().id();
+        cfg_env.spec_id = spec_id;
+        cfg_env.perf_analyse_created_bytecodes = AnalysisKind::Analyse;
+
+        // optimism-specific configuration
+        cfg_env.optimism = chain_spec.is_optimism();
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use reth_primitives::revm_primitives::BlockEnv;
+
+    #[test]
+    #[ignore]
+    fn test_fill_cfg_and_block_env() {
+        let mut cfg_env = CfgEnv::default();
+        let mut block_env = BlockEnv::default();
+        let header = Header::default();
+        let chain_spec = ChainSpec::default();
+        let total_difficulty = U256::ZERO;
+
+        OptimismEvmConfig::fill_cfg_and_block_env(
+            &mut cfg_env,
+            &mut block_env,
+            &chain_spec,
+            &header,
+            total_difficulty,
+        );
+
+        assert_eq!(cfg_env.chain_id, chain_spec.chain().id());
+    }
+}

crates/node-optimism/src/lib.rs

@@ -0,0 +1,20 @@
+//! Standalone crate for Optimism-specific Reth configuration and builder types.
+
+#![doc(
+    html_logo_url = "https://raw.githubusercontent.com/paradigmxyz/reth/main/assets/reth-docs.png",
+    html_favicon_url = "https://avatars0.githubusercontent.com/u/97369466?s=256",
+    issue_tracker_base_url = "https://github.com/paradigmxyz/reth/issues/"
+)]
+#![cfg_attr(docsrs, feature(doc_cfg, doc_auto_cfg))]
+// The `optimism` feature must be enabled to use this crate.
+#![cfg(feature = "optimism")]
+
+/// Exports optimism-specific implementations of the [EngineTypes](reth_node_api::EngineTypes)
+/// trait.
+pub mod engine;
+pub use engine::OptimismEngineTypes;
+
+/// Exports optimism-specific implementations of the [EvmEnvConfig](reth_node_api::EvmEnvConfig)
+/// trait.
+pub mod evm;
+pub use evm::OptimismEvmConfig;