fix: avoid leveled compaction crash when recovering from manifest (#63)

* Fix: Avoid leveled copaction crash when recovering from manifest

* Also sort SSTs in manifest recovery

* Add `in_recovery` flag to `apply_compaction_result`

- Don't sort the SSTs inside `apply_compaction_result` if in recovery

mini-lsm-starter/src/bin/compaction-simulator.rs

@@ -561,8 +561,12 @@ fn main() {
                             .join(", ")
                     );
                     max_space = max_space.max(storage.file_list.len());
-                    let (snapshot, del) =
-                        controller.apply_compaction_result(&storage.snapshot, &task, &sst_ids);
+                    let (snapshot, del) = controller.apply_compaction_result(
+                        &storage.snapshot,
+                        &task,
+                        &sst_ids,
+                        false,
+                    );
                     storage.snapshot = snapshot;
                     storage.remove(&del);
                     println!("--- After Compaction ---");

mini-lsm-starter/src/compact.rs

@@ -68,10 +68,11 @@ impl CompactionController {
         snapshot: &LsmStorageState,
         task: &CompactionTask,
         output: &[usize],
+        in_recovery: bool,
     ) -> (LsmStorageState, Vec<usize>) {
         match (self, task) {
             (CompactionController::Leveled(ctrl), CompactionTask::Leveled(task)) => {
-                ctrl.apply_compaction_result(snapshot, task, output)
+                ctrl.apply_compaction_result(snapshot, task, output, in_recovery)
             }
             (CompactionController::Simple(ctrl), CompactionTask::Simple(task)) => {
                 ctrl.apply_compaction_result(snapshot, task, output)

mini-lsm-starter/src/compact/leveled.rs

@@ -50,6 +50,7 @@ impl LeveledCompactionController {
         _snapshot: &LsmStorageState,
         _task: &LeveledCompactionTask,
         _output: &[usize],
+        _in_recovery: bool,
     ) -> (LsmStorageState, Vec<usize>) {
         unimplemented!()
     }