chore(rocksdb): getter for inner database handle

CHANGELOG.md

@@ -30,6 +30,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - [2033](https://github.com/FuelLabs/fuel-core/pull/2033): Remove `Option<BlockHeight>` in favor of `BlockHeightQuery` where applicable.
 - [2472](https://github.com/FuelLabs/fuel-core/pull/2472): Added the `amountU128` field to the `Balance` GraphQL schema, providing the total balance as a `U128`. The existing `amount` field clamps any balance exceeding `U64` to `u64::MAX`.
 - [2526](https://github.com/FuelLabs/fuel-core/pull/2526): Add possibility to not have any cache set for RocksDB. Add an option to either load the RocksDB columns families on creation of the database or when the column is used.
+- [2532](https://github.com/FuelLabs/fuel-core/pull/2532): Getters for inner rocksdb database handles.
 
 ### Fixed
 - [2365](https://github.com/FuelLabs/fuel-core/pull/2365): Fixed the error during dry run in the case of race condition.

crates/fuel-core/src/database.rs

@@ -207,6 +207,18 @@ where
         state_rewind_policy: StateRewindPolicy,
         database_config: DatabaseConfig,
     ) -> Result<Self> {
+        let db =
+            Self::open_as_historical_rocksdb(path, state_rewind_policy, database_config)?;
+
+        Ok(Self::new(Arc::new(db)))
+    }
+
+    #[cfg(feature = "rocksdb")]
+    pub fn open_as_historical_rocksdb(
+        path: &Path,
+        state_rewind_policy: StateRewindPolicy,
+        database_config: DatabaseConfig,
+    ) -> Result<HistoricalRocksDB<Description>> {
         use anyhow::Context;
 
         let db = HistoricalRocksDB::<Description>::default_open(
@@ -222,7 +234,7 @@ where
             )
         })?;
 
-        Ok(Self::new(Arc::new(db)))
+        Ok(db)
     }
 
     /// Converts the regular database to an unchecked database.

crates/fuel-core/src/state/historical_rocksdb.rs

@@ -106,6 +106,10 @@ where
         })
     }
 
+    pub fn inner(&self) -> &RocksDb<Historical<Description>> {
+        &self.db
+    }
+
     pub fn default_open<P: AsRef<Path>>(
         path: P,
         state_rewind_policy: StateRewindPolicy,

crates/fuel-core/src/state/rocks_db.rs

@@ -155,6 +155,11 @@ impl<Description> RocksDb<Description>
 where
     Description: DatabaseDescription,
 {
+    /// Allows consumers to get the inner db handle
+    pub fn inner(&self) -> &DB {
+        &self.db
+    }
+
     pub fn default_open_temp(capacity: Option<usize>) -> DatabaseResult<Self> {
         Self::default_open_temp_with_params(DatabaseConfig {
             cache_capacity: capacity,