feat(l1)!: allow setting a target gas limit through CLI

cmd/ethrex/cli.rs

@@ -7,7 +7,7 @@ use std::{
 
 use clap::{ArgAction, Parser as ClapParser, Subcommand as ClapSubcommand};
 use ethrex_blockchain::{BlockchainOptions, BlockchainType, error::ChainError};
-use ethrex_common::types::{Block, Genesis, fee_config::FeeConfig};
+use ethrex_common::types::{Block, DEFAULT_BUILDER_GAS_CEIL, Genesis, fee_config::FeeConfig};
 use ethrex_p2p::{
     discv4::peer_table::TARGET_PEERS, sync::SyncMode, tx_broadcaster::BROADCAST_INTERVAL_MS,
     types::Node,
@@ -230,6 +230,14 @@ pub struct Options {
         help_heading = "Block producer options"
     )]
     pub extra_data: String,
+    #[arg(
+        long = "block-producer.gas-limit",
+        default_value_t = DEFAULT_BUILDER_GAS_CEIL,
+        value_name = "GAS_LIMIT",
+        help = "Target block gas limit.",
+        help_heading = "Block producer options"
+    )]
+    pub gas_limit: u64,
 }
 
 impl Options {
@@ -302,6 +310,7 @@ impl Default for Options {
             tx_broadcasting_time_interval: Default::default(),
             target_peers: Default::default(),
             extra_data: get_minimal_client_version(),
+            gas_limit: DEFAULT_BUILDER_GAS_CEIL,
         }
     }
 }

cmd/ethrex/initializers.rs

@@ -130,7 +130,7 @@ pub fn init_blockchain(store: Store, blockchain_opts: BlockchainOptions) -> Arc<
     Blockchain::new(store, blockchain_opts).into()
 }
 
-#[allow(clippy::too_many_arguments)]
+#[expect(clippy::too_many_arguments)]
 pub async fn init_rpc_api(
     opts: &Options,
     peer_handler: PeerHandler,
@@ -141,8 +141,6 @@ pub async fn init_rpc_api(
     cancel_token: CancellationToken,
     tracker: TaskTracker,
     log_filter_handler: Option<reload::Handle<EnvFilter, Registry>>,
-    gas_ceil: Option<u64>,
-    extra_data: String,
 ) {
     init_datadir(&opts.datadir);
 
@@ -182,8 +180,8 @@ pub async fn init_rpc_api(
         peer_handler,
         get_client_version(),
         log_filter_handler,
-        gas_ceil,
-        extra_data,
+        opts.gas_limit,
+        opts.extra_data.clone(),
     );
 
     tracker.spawn(rpc_api);
@@ -463,9 +461,6 @@ pub async fn init_l1(
         cancel_token.clone(),
         tracker.clone(),
         log_filter_handler,
-        // TODO (#4482): Make this configurable.
-        None,
-        opts.extra_data.clone(),
     )
     .await;
 

crates/networking/rpc/rpc.rs

@@ -53,7 +53,6 @@ use axum_extra::{
 };
 use bytes::Bytes;
 use ethrex_blockchain::Blockchain;
-use ethrex_common::types::DEFAULT_BUILDER_GAS_CEIL;
 use ethrex_p2p::peer_handler::PeerHandler;
 use ethrex_p2p::sync_manager::SyncManager;
 use ethrex_p2p::types::Node;
@@ -210,7 +209,7 @@ pub async fn start_api(
     peer_handler: PeerHandler,
     client_version: String,
     log_filter_handler: Option<reload::Handle<EnvFilter, Registry>>,
-    gas_ceil: Option<u64>,
+    gas_ceil: u64,
     extra_data: String,
 ) -> Result<(), RpcErr> {
     // TODO: Refactor how filters are handled,
@@ -231,7 +230,7 @@ pub async fn start_api(
         },
         gas_tip_estimator: Arc::new(TokioMutex::new(GasTipEstimator::new())),
         log_filter_handler,
-        gas_ceil: gas_ceil.unwrap_or(DEFAULT_BUILDER_GAS_CEIL),
+        gas_ceil,
     };
 
     // Periodically clean up the active filters for the filters endpoints.

crates/networking/rpc/utils.rs

@@ -398,7 +398,7 @@ pub mod test_utils {
                 PeerHandler::dummy(),
                 "ethrex/test".to_string(),
                 None,
-                None,
+                DEFAULT_BUILDER_GAS_CEIL,
                 String::new(),
             )
             .await

docs/CLI.md

@@ -82,7 +82,7 @@ P2P options:
           UDP port for P2P discovery.
 
           [default: 30303]
-    
+
       --p2p.tx-broadcasting-interval <INTERVAL_MS>
           Transaction Broadcasting Time Interval (ms) for batching transactions before broadcasting them.
 
@@ -143,6 +143,11 @@ Block producer options:
           Block extra data message.
 
           [default: "ethrex 4.0.0"]
+
+      --block-producer.gas-limit <GAS_LIMIT>
+          Target block gas limit.
+
+          [default: 30000000]
 ```
 
 <!-- END_CLI_HELP -->