fix: add rollup config in constructor

bin/kona-exex/src/kona.rs

@@ -7,18 +7,21 @@ use superchain_registry::RollupConfig;
 
 use crate::cli::KonaArgsExt;
 
+/// The Kona Execution Extension.
 #[derive(Debug)]
+#[allow(unused)]
 pub(crate) struct KonaExEx<Node: FullNodeComponents> {
     /// The rollup configuration
     cfg: Arc<RollupConfig>,
     /// The context of the Execution Extension
     ctx: ExExContext<Node>,
 }
 
+#[allow(unused)]
 impl<Node: FullNodeComponents> KonaExEx<Node> {
     /// Creates a new instance of the Kona Execution Extension.
-    pub async fn new(ctx: ExExContext<Node>, args: KonaArgsExt) -> Self {
-        unimplemented!()
+    pub async fn new(ctx: ExExContext<Node>, args: KonaArgsExt, cfg: Arc<RollupConfig>) -> Self {
+        Self { ctx, cfg }
     }
 
     /// Starts the Kona Execution Extension loop.

bin/kona-exex/src/main.rs

@@ -1,7 +1,10 @@
+use std::sync::Arc;
+
 use clap::Parser;
-use eyre::Result;
+use eyre::{bail, Result};
 use reth::cli::Cli;
 use reth_node_ethereum::EthereumNode;
+use superchain_registry::ROLLUP_CONFIGS;
 
 mod kona;
 use kona::KonaExEx;
@@ -14,8 +17,12 @@ const EXEX_ID: &str = "kona";
 
 fn main() -> Result<()> {
     Cli::<KonaArgsExt>::parse().run(|builder, args| async move {
+        let Some(cfg) = ROLLUP_CONFIGS.get(&args.l2_chain_id).cloned() else {
+            bail!("Rollup configuration not found for L2 chain ID: {}", args.l2_chain_id);
+        };
+
         let node = EthereumNode::default();
-        let kona = move |ctx| async { Ok(KonaExEx::new(ctx, args).await.start()) };
+        let kona = move |ctx| async { Ok(KonaExEx::new(ctx, args, Arc::new(cfg)).await.start()) };
         let handle = builder.node(node).install_exex(EXEX_ID, kona).launch().await?;
         handle.wait_for_node_exit().await
     })