Modularize beacon node backend (#4718)

#4669


  Modularize the beacon node backend to make it easier to add new database implementations

beacon_node/beacon_chain/tests/op_verification.rs

@@ -14,7 +14,8 @@ use state_processing::per_block_processing::errors::{
     AttesterSlashingInvalid, BlockOperationError, ExitInvalid, ProposerSlashingInvalid,
 };
 use std::sync::{Arc, LazyLock};
-use store::{LevelDB, StoreConfig};
+use store::database::interface::BeaconNodeBackend;
+use store::StoreConfig;
 use tempfile::{tempdir, TempDir};
 use types::*;
 
@@ -26,7 +27,7 @@ static KEYPAIRS: LazyLock<Vec<Keypair>> =
 
 type E = MinimalEthSpec;
 type TestHarness = BeaconChainHarness<DiskHarnessType<E>>;
-type HotColdDB = store::HotColdDB<E, LevelDB<E>, LevelDB<E>>;
+type HotColdDB = store::HotColdDB<E, BeaconNodeBackend<E>, BeaconNodeBackend<E>>;
 
 fn get_store(db_path: &TempDir) -> Arc<HotColdDB> {
     let spec = Arc::new(test_spec::<E>());

beacon_node/beacon_chain/tests/store_tests.rs

@@ -25,10 +25,11 @@ use std::collections::HashSet;
 use std::convert::TryInto;
 use std::sync::{Arc, LazyLock};
 use std::time::Duration;
+use store::database::interface::BeaconNodeBackend;
 use store::metadata::{SchemaVersion, CURRENT_SCHEMA_VERSION, STATE_UPPER_LIMIT_NO_RETAIN};
 use store::{
     iter::{BlockRootsIterator, StateRootsIterator},
-    BlobInfo, DBColumn, HotColdDB, LevelDB, StoreConfig,
+    BlobInfo, DBColumn, HotColdDB, StoreConfig,
 };
 use tempfile::{tempdir, TempDir};
 use tokio::time::sleep;
@@ -46,7 +47,7 @@ static KEYPAIRS: LazyLock<Vec<Keypair>> =
 type E = MinimalEthSpec;
 type TestHarness = BeaconChainHarness<DiskHarnessType<E>>;
 
-fn get_store(db_path: &TempDir) -> Arc<HotColdDB<E, LevelDB<E>, LevelDB<E>>> {
+fn get_store(db_path: &TempDir) -> Arc<HotColdDB<E, BeaconNodeBackend<E>, BeaconNodeBackend<E>>> {
     get_store_generic(db_path, StoreConfig::default(), test_spec::<E>())
 }
 
@@ -54,7 +55,7 @@ fn get_store_generic(
     db_path: &TempDir,
     config: StoreConfig,
     spec: ChainSpec,
-) -> Arc<HotColdDB<E, LevelDB<E>, LevelDB<E>>> {
+) -> Arc<HotColdDB<E, BeaconNodeBackend<E>, BeaconNodeBackend<E>>> {
     let hot_path = db_path.path().join("chain_db");
     let cold_path = db_path.path().join("freezer_db");
     let blobs_path = db_path.path().join("blobs_db");
@@ -73,7 +74,7 @@ fn get_store_generic(
 }
 
 fn get_harness(
-    store: Arc<HotColdDB<E, LevelDB<E>, LevelDB<E>>>,
+    store: Arc<HotColdDB<E, BeaconNodeBackend<E>, BeaconNodeBackend<E>>>,
     validator_count: usize,
 ) -> TestHarness {
     // Most tests expect to retain historic states, so we use this as the default.
@@ -85,7 +86,7 @@ fn get_harness(
 }
 
 fn get_harness_generic(
-    store: Arc<HotColdDB<E, LevelDB<E>, LevelDB<E>>>,
+    store: Arc<HotColdDB<E, BeaconNodeBackend<E>, BeaconNodeBackend<E>>>,
     validator_count: usize,
     chain_config: ChainConfig,
 ) -> TestHarness {
@@ -244,7 +245,6 @@ async fn full_participation_no_skips() {
             AttestationStrategy::AllValidators,
         )
         .await;
-
     check_finalization(&harness, num_blocks_produced);
     check_split_slot(&harness, store);
     check_chain_dump(&harness, num_blocks_produced + 1);
@@ -3508,7 +3508,10 @@ fn check_finalization(harness: &TestHarness, expected_slot: u64) {
 }
 
 /// Check that the HotColdDB's split_slot is equal to the start slot of the last finalized epoch.
-fn check_split_slot(harness: &TestHarness, store: Arc<HotColdDB<E, LevelDB<E>, LevelDB<E>>>) {
+fn check_split_slot(
+    harness: &TestHarness,
+    store: Arc<HotColdDB<E, BeaconNodeBackend<E>, BeaconNodeBackend<E>>>,
+) {
     let split_slot = store.get_split_slot();
     assert_eq!(
         harness