custom gas limit

anchor/client/src/cli.rs

@@ -471,6 +471,18 @@ pub struct Node {
     )]
     pub work_queue_size: Vec<String>,
 
+    #[clap(
+        long,
+        value_name = "INTEGER",
+        default_value_t = 36_000_000,
+        requires = "builder_proposals",
+        help = "The gas limit to be used in all builder proposals for all validators managed. \
+                Note this will not necessarily be used if the gas limit \
+                set here moves too far from the previous block's gas limit.",
+        display_order = 0
+    )]
+    pub gas_limit: u64,
+
     #[clap(
         long,
         alias = "private-tx-proposals",

anchor/client/src/config.rs

@@ -63,6 +63,8 @@ pub struct Config {
     pub disable_slashing_protection: bool,
     /// Act as impostor
     pub impostor: Option<OperatorId>,
+    /// Gas limit on blocks
+    pub gas_limit: u64,
     /// Should payload construction be outsourced
     pub builder_proposals: bool,
     /// Block boost factor
@@ -116,6 +118,7 @@ impl Config {
             builder_proposals: false,
             builder_boost_factor: None,
             prefer_builder_proposals: false,
+            gas_limit: 36_000_000,
         }
     }
 }
@@ -209,6 +212,8 @@ pub fn from_cli(cli_args: &Node) -> Result<Config, String> {
     config.builder_boost_factor = cli_args.builder_boost_factor;
     config.prefer_builder_proposals = cli_args.prefer_builder_proposals;
 
+    config.gas_limit = cli_args.gas_limit;
+
     // Http API server
     config.http_api.enabled = cli_args.http;
 

anchor/client/src/lib.rs

@@ -480,6 +480,7 @@ impl Client {
             genesis_validators_root,
             config.impostor.is_none().then_some(key),
             executor.clone(),
+            config.gas_limit,
             config.builder_proposals,
             config.builder_boost_factor,
             config.prefer_builder_proposals,

anchor/validator_store/src/lib.rs

@@ -100,6 +100,7 @@ pub struct AnchorValidatorStore<T: SlotClock + 'static, E: EthSpec> {
     genesis_validators_root: Hash256,
     private_key: Option<Rsa<Private>>,
     slot_metadata: watch::Sender<Option<Arc<SlotMetadata<E>>>>,
+    gas_limit: u64,
     // MEV configuration is applied at the operator level and applies to all validators this
     // operator controls
     builder_proposals: bool,
@@ -120,6 +121,7 @@ impl<T: SlotClock, E: EthSpec> AnchorValidatorStore<T, E> {
         genesis_validators_root: Hash256,
         private_key: Option<Rsa<Private>>,
         task_executor: TaskExecutor,
+        gas_limit: u64,
         builder_proposals: bool,
         builder_boost_factor: Option<u64>,
         prefer_builder_proposals: bool,
@@ -137,6 +139,7 @@ impl<T: SlotClock, E: EthSpec> AnchorValidatorStore<T, E> {
             genesis_validators_root,
             private_key,
             slot_metadata: watch::channel(None).0,
+            gas_limit,
             builder_proposals,
             builder_boost_factor,
             prefer_builder_proposals,
@@ -1351,9 +1354,7 @@ impl<T: SlotClock, E: EthSpec> ValidatorStore for AnchorValidatorStore<T, E> {
         self.validator(*pubkey).ok().map(|v| ProposalData {
             validator_index: v.metadata.index.map(|idx| *idx as u64),
             fee_recipient: Some(v.cluster.fee_recipient),
-            // TODO: Support custom gas limits
-            // https://github.com/sigp/anchor/issues/262
-            gas_limit: 36_000_000,
+            gas_limit: self.gas_limit,
             builder_proposals: self.builder_proposals,
         })
     }