feat: B50 fetchall impl

sdgb-cli/src/utils/helpers/mod.rs

@@ -20,6 +20,19 @@ use bincode::{BorrowDecode, Encode, borrow_decode_from_slice};
 
 use crate::{EARLY_QUIT, cache};
 
+pub fn read_cache_keys(
+    definition: TableDefinition<'_, u32, Vec<u8>>,
+) -> Result<Vec<u32>, Box<dyn snafu::Error>> {
+    let txn = cache::read_txn()?;
+    let table = cache::open_table_ro(&txn, definition)?;
+
+    Ok(table
+        .iter()?
+        .flatten()
+        .map(|(value, _)| value.value())
+        .collect::<Vec<u32>>())
+}
+
 pub fn read_cache<D>(
     definition: TableDefinition<'_, u32, Vec<u8>>,
 ) -> Result<Vec<D>, Box<dyn snafu::Error>>
@@ -123,7 +136,7 @@ where
                 }
                 Err(sdgb_api::ApiError::JSON { .. }) => {}
                 Err(e) => {
-                    error!("preview failed: {e}");
+                    error!("fetch failed: {e}");
                 }
             }