SingleAttestation

beacon_node/beacon_chain/src/attestation_verification.rs

@@ -60,9 +60,9 @@ use std::borrow::Cow;
 use strum::AsRefStr;
 use tree_hash::TreeHash;
 use types::{
-    Attestation, AttestationRef, BeaconCommittee, BeaconStateError::NoCommitteeFound, ChainSpec,
-    CommitteeIndex, Epoch, EthSpec, Hash256, IndexedAttestation, SelectionProof,
-    SignedAggregateAndProof, Slot, SubnetId,
+    attestation::SingleAttestation, Attestation, AttestationRef, BeaconCommittee,
+    BeaconStateError::NoCommitteeFound, ChainSpec, CommitteeIndex, Epoch, EthSpec, Hash256,
+    IndexedAttestation, SelectionProof, SignedAggregateAndProof, Slot, SubnetId,
 };
 
 pub use batch::{batch_verify_aggregated_attestations, batch_verify_unaggregated_attestations};
@@ -317,12 +317,23 @@ pub struct VerifiedUnaggregatedAttestation<'a, T: BeaconChainTypes> {
     attestation: AttestationRef<'a, T::EthSpec>,
     indexed_attestation: IndexedAttestation<T::EthSpec>,
     subnet_id: SubnetId,
+    validator_index: usize,
 }
 
 impl<T: BeaconChainTypes> VerifiedUnaggregatedAttestation<'_, T> {
     pub fn into_indexed_attestation(self) -> IndexedAttestation<T::EthSpec> {
         self.indexed_attestation
     }
+
+    pub fn single_attestation(&self) -> SingleAttestation {
+        // TODO(single-attestation) unwrap
+        SingleAttestation {
+            committee_index: self.attestation.committee_index().unwrap_or(0) as usize,
+            attester_index: self.validator_index,
+            data: self.attestation.data().clone(),
+            signature: self.attestation.signature().clone(),
+        }
+    }
 }
 
 /// Custom `Clone` implementation is to avoid the restrictive trait bounds applied by the usual derive
@@ -1035,6 +1046,7 @@ impl<'a, T: BeaconChainTypes> VerifiedUnaggregatedAttestation<'a, T> {
             attestation,
             indexed_attestation,
             subnet_id,
+            validator_index: validator_index as usize,
         })
     }
 

beacon_node/beacon_chain/src/beacon_chain.rs

@@ -2034,9 +2034,18 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
                 // This method is called for API and gossip attestations, so this covers all unaggregated attestation events
                 if let Some(event_handler) = self.event_handler.as_ref() {
                     if event_handler.has_attestation_subscribers() {
-                        event_handler.register(EventKind::Attestation(Box::new(
-                            v.attestation().clone_as_attestation(),
-                        )));
+                        let current_fork = self
+                            .spec
+                            .fork_name_at_slot::<T::EthSpec>(v.attestation().data().slot);
+                        if current_fork.electra_enabled() {
+                            event_handler.register(EventKind::SingleAttestation(Box::new(
+                                v.single_attestation(),
+                            )));
+                        } else {
+                            event_handler.register(EventKind::Attestation(Box::new(
+                                v.attestation().clone_as_attestation(),
+                            )));
+                        }
                     }
                 }
                 metrics::inc_counter(&metrics::UNAGGREGATED_ATTESTATION_PROCESSING_SUCCESSES);

beacon_node/beacon_chain/src/events.rs

@@ -90,6 +90,10 @@ impl<E: EthSpec> ServerSentEventHandler<E> {
                 .attestation_tx
                 .send(kind)
                 .map(|count| log_count("attestation", count)),
+            EventKind::SingleAttestation(_) => self
+                .attestation_tx
+                .send(kind)
+                .map(|count| log_count("attestation", count)),
             EventKind::Block(_) => self
                 .block_tx
                 .send(kind)