From 219124234150759ee9d7a90c55fb9c44b77ca27c Mon Sep 17 00:00:00 2001
From: Mark Mackey <mark@sigmaprime.io>
Date: Wed, 9 Nov 2022 19:35:01 -0600
Subject: [PATCH] Added stuff that NEEDS IMPLEMENTING

---
 beacon_node/operation_pool/src/lib.rs         | 15 ++++++++++++++-
 beacon_node/operation_pool/src/persistence.rs |  2 ++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/beacon_node/operation_pool/src/lib.rs b/beacon_node/operation_pool/src/lib.rs
index 4fe5a7254..ba0567277 100644
--- a/beacon_node/operation_pool/src/lib.rs
+++ b/beacon_node/operation_pool/src/lib.rs
@@ -32,7 +32,8 @@ use std::ptr;
 use types::{
     sync_aggregate::Error as SyncAggregateError, typenum::Unsigned, Attestation, AttestationData,
     AttesterSlashing, BeaconState, BeaconStateError, ChainSpec, Epoch, EthSpec, ProposerSlashing,
-    SignedVoluntaryExit, Slot, SyncAggregate, SyncCommitteeContribution, Validator,
+    SignedBlsToExecutionChange, SignedVoluntaryExit, Slot, SyncAggregate,
+    SyncCommitteeContribution, Validator,
 };
 
 type SyncContributions<T> = RwLock<HashMap<SyncAggregateId, Vec<SyncCommitteeContribution<T>>>>;
@@ -49,6 +50,8 @@ pub struct OperationPool<T: EthSpec + Default> {
     proposer_slashings: RwLock<HashMap<u64, SigVerifiedOp<ProposerSlashing, T>>>,
     /// Map from exiting validator to their exit data.
     voluntary_exits: RwLock<HashMap<u64, SigVerifiedOp<SignedVoluntaryExit, T>>>,
+    /// Map from credential changing validator to their execution change data.
+    bls_to_execution_changes: RwLock<HashMap<u64, SigVerifiedOp<SignedBlsToExecutionChange, T>>>,
     /// Reward cache for accelerating attestation packing.
     reward_cache: RwLock<RewardCache>,
     _phantom: PhantomData<T>,
@@ -509,6 +512,16 @@ impl<T: EthSpec> OperationPool<T> {
         );
     }
 
+    /// Get a list of execution changes for inclusion in a block.
+    pub fn get_bls_to_execution_changes(
+        &self,
+        state: &BeaconState<T>,
+        spec: &ChainSpec,
+    ) -> Vec<SignedBlsToExecutionChange> {
+        // FIXME: actually implement this
+        return vec![];
+    }
+
     /// Prune all types of transactions given the latest head state and head fork.
     pub fn prune_all(&self, head_state: &BeaconState<T>, current_epoch: Epoch) {
         self.prune_attestations(current_epoch);
diff --git a/beacon_node/operation_pool/src/persistence.rs b/beacon_node/operation_pool/src/persistence.rs
index ed15369df..92c5bd92f 100644
--- a/beacon_node/operation_pool/src/persistence.rs
+++ b/beacon_node/operation_pool/src/persistence.rs
@@ -142,6 +142,8 @@ impl<T: EthSpec> PersistedOperationPool<T> {
             attester_slashings,
             proposer_slashings,
             voluntary_exits,
+            // FIXME: IMPLEMENT THIS
+            bls_to_execution_changes: Default::default(),
             reward_cache: Default::default(),
             _phantom: Default::default(),
         };