feat(txpool): add PoolTransaction::consensus_ref (#22182)

Co-authored-by: Amp <amp@ampcode.com>
Co-authored-by: Matthias Seitz <matthias.seitz@outlook.de>

.changelog/fast-seals-play.md

@@ -0,0 +1,5 @@
+---
+reth-transaction-pool: minor
+---
+
+Added `consensus_ref` method to `PoolTransaction` trait for borrowing consensus transactions without cloning.

crates/transaction-pool/src/test_utils/mock.rs

@@ -704,6 +704,10 @@ impl PoolTransaction for MockTransaction {
 
     type Pooled = PooledTransactionVariant;
 
+    fn consensus_ref(&self) -> Recovered<&Self::Consensus> {
+        unimplemented!("mock transaction does not wrap a consensus transaction")
+    }
+
     fn into_consensus(self) -> Recovered<Self::Consensus> {
         self.into()
     }

crates/transaction-pool/src/traits.rs

@@ -1257,6 +1257,9 @@ pub trait PoolTransaction:
         self.clone().into_consensus()
     }
 
+    /// Returns a reference to the consensus transaction with the recovered sender.
+    fn consensus_ref(&self) -> Recovered<&Self::Consensus>;
+
     /// Define a method to convert from the `Self` type to `Consensus`
     fn into_consensus(self) -> Recovered<Self::Consensus>;
 
@@ -1447,6 +1450,10 @@ impl PoolTransaction for EthPooledTransaction {
         self.transaction().clone()
     }
 
+    fn consensus_ref(&self) -> Recovered<&Self::Consensus> {
+        Recovered::new_unchecked(&*self.transaction, self.transaction.signer())
+    }
+
     fn into_consensus(self) -> Recovered<Self::Consensus> {
         self.transaction
     }