feat: add analyze-storage command to ledger-tool (#7165)

ledger/src/blocktree.rs

@@ -148,6 +148,10 @@ impl BlocktreeInsertionMetrics {
 }
 
 impl Blocktree {
+    pub fn db(self) -> Arc<Database> {
+        self.db
+    }
+
     /// Opens a Ledger in directory, provides "infinite" window of shreds
     pub fn open(ledger_path: &Path) -> Result<Blocktree> {
         fs::create_dir_all(&ledger_path)?;

ledger/src/blocktree_db.rs

@@ -228,6 +228,10 @@ pub trait Column {
     const NAME: &'static str;
     type Index;
 
+    fn key_size() -> usize {
+        std::mem::size_of::<Self::Index>()
+    }
+
     fn key(index: Self::Index) -> Vec<u8>;
     fn index(key: &[u8]) -> Self::Index;
     fn slot(index: Self::Index) -> Slot;

ledger/src/lib.rs

@@ -3,7 +3,7 @@ pub mod bank_forks_utils;
 pub mod block_error;
 #[macro_use]
 pub mod blocktree;
-mod blocktree_db;
+pub mod blocktree_db;
 mod blocktree_meta;
 pub mod blocktree_processor;
 pub mod entry;