Ensure /eth/v2/beacon/pool/attestations honors committee_index (#7298)

#7294


  Fix the filtering logic so that we actually filter by committee index for both `Base` and `Electra` attestations.

Added a tiny optimization when calculating committee_index to prevent unneeded memory allocations

Added a regression test

beacon_node/http_api/tests/tests.rs

@@ -28,6 +28,7 @@ use http_api::{
 use lighthouse_network::{types::SyncState, Enr, EnrExt, PeerId};
 use logging::test_logger;
 use network::NetworkReceivers;
+use operation_pool::attestation_storage::CheckpointKey;
 use proto_array::ExecutionStatus;
 use sensitive_url::SensitiveUrl;
 use slot_clock::SlotClock;
@@ -2119,7 +2120,7 @@ impl ApiTester {
         self
     }
 
-    pub async fn test_get_beacon_pool_attestations(self) -> Self {
+    pub async fn test_get_beacon_pool_attestations(self) {
         let result = self
             .client
             .get_beacon_pool_attestations_v1(None, None)
@@ -2138,9 +2139,80 @@ impl ApiTester {
             .await
             .unwrap()
             .data;
+
         assert_eq!(result, expected);
 
-        self
+        let result_committee_index_filtered = self
+            .client
+            .get_beacon_pool_attestations_v1(None, Some(0))
+            .await
+            .unwrap()
+            .data;
+
+        let expected_committee_index_filtered = expected
+            .clone()
+            .into_iter()
+            .filter(|att| att.get_committee_indices_map().contains(&0))
+            .collect::<Vec<_>>();
+
+        assert_eq!(
+            result_committee_index_filtered,
+            expected_committee_index_filtered
+        );
+
+        let result_committee_index_filtered = self
+            .client
+            .get_beacon_pool_attestations_v1(None, Some(1))
+            .await
+            .unwrap()
+            .data;
+
+        let expected_committee_index_filtered = expected
+            .clone()
+            .into_iter()
+            .filter(|att| att.get_committee_indices_map().contains(&1))
+            .collect::<Vec<_>>();
+
+        assert_eq!(
+            result_committee_index_filtered,
+            expected_committee_index_filtered
+        );
+
+        let fork_name = self
+            .harness
+            .chain
+            .spec
+            .fork_name_at_slot::<E>(self.harness.chain.slot().unwrap());
+
+        // aggregate electra attestations
+        if fork_name.electra_enabled() {
+            // Take and drop the lock in a block to avoid clippy complaining
+            // about taking locks across await points
+            {
+                let mut all_attestations = self.chain.op_pool.attestations.write();
+                let (prev_epoch_key, curr_epoch_key) =
+                    CheckpointKey::keys_for_state(&self.harness.get_current_state());
+                all_attestations.aggregate_across_committees(prev_epoch_key);
+                all_attestations.aggregate_across_committees(curr_epoch_key);
+            }
+            let result_committee_index_filtered = self
+                .client
+                .get_beacon_pool_attestations_v2(None, Some(0))
+                .await
+                .unwrap()
+                .data;
+            let mut expected = self.chain.op_pool.get_all_attestations();
+            expected.extend(self.chain.naive_aggregation_pool.read().iter().cloned());
+            let expected_committee_index_filtered = expected
+                .clone()
+                .into_iter()
+                .filter(|att| att.get_committee_indices_map().contains(&0))
+                .collect::<Vec<_>>();
+            assert_eq!(
+                result_committee_index_filtered,
+                expected_committee_index_filtered
+            );
+        }
     }
 
     pub async fn test_post_beacon_pool_attester_slashings_valid_v1(mut self) -> Self {
@@ -6463,10 +6535,30 @@ async fn beacon_get_blocks() {
 }
 
 #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
-async fn beacon_get_pools() {
+async fn test_beacon_pool_attestations_electra() {
+    let mut config = ApiTesterConfig::default();
+    config.spec.altair_fork_epoch = Some(Epoch::new(0));
+    config.spec.bellatrix_fork_epoch = Some(Epoch::new(0));
+    config.spec.capella_fork_epoch = Some(Epoch::new(0));
+    config.spec.deneb_fork_epoch = Some(Epoch::new(0));
+    config.spec.electra_fork_epoch = Some(Epoch::new(0));
+    ApiTester::new_from_config(config)
+        .await
+        .test_get_beacon_pool_attestations()
+        .await;
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn test_beacon_pool_attestations_base() {
     ApiTester::new()
         .await
         .test_get_beacon_pool_attestations()
+        .await;
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn beacon_get_pools() {
+    ApiTester::new()
         .await
         .test_get_beacon_pool_attester_slashings()
         .await