Extract the connector loading part of open_pile

yama/src/open.rs

@@ -93,6 +93,32 @@ pub async fn open_pile(
         bail!("Neither yama.cfg nor yama.toml exists; doesn't look like a Yama pile or pile connector.");
     };
 
+    // Calculate a prefix for the cache name
+    let canon_connector_in_dir = connector_in_dir
+        .canonicalize()
+        .unwrap_or(connector_in_dir.to_owned());
+    let cache_base_name = canon_connector_in_dir
+        .file_name()
+        .map(|f| f.to_string_lossy())
+        .unwrap_or(Cow::Borrowed("_"));
+
+    open_pile_using_connector(
+        &connection_scheme,
+        cache_base_name.as_ref(),
+        keyring,
+        lock_kind,
+        lock_holder,
+    )
+    .await
+}
+
+pub async fn open_pile_using_connector(
+    connection_scheme: &PileConnectionScheme,
+    cache_base_name: &str,
+    keyring: Keyring,
+    lock_kind: LockKind,
+    lock_holder: String,
+) -> eyre::Result<PileWithCache<BoxedWormFileProvider>> {
     let wormfileprovider = Arc::new(connection_scheme.connect_to_wormfileprovider().await?);
     let pile = Pile::open_manual(wormfileprovider, lock_kind, lock_holder, keyring).await?;
 
@@ -102,14 +128,7 @@ pub async fn open_pile(
     connection_scheme.hash(&mut hasher);
     let u64_hash = hasher.finish();
 
-    let canon_connector_in_dir = connector_in_dir
-        .canonicalize()
-        .unwrap_or(connector_in_dir.to_owned());
-    let base_name = canon_connector_in_dir
-        .file_name()
-        .map(|f| f.to_string_lossy())
-        .unwrap_or(Cow::Borrowed("_"));
-    let cache_key = format!("{}-{:016x}.sqlite3", base_name, u64_hash);
+    let cache_key = format!("{}-{:016x}.sqlite3", cache_base_name, u64_hash);
 
     tokio::fs::create_dir_all(&cache_dir).await?;
     let cache_file = cache_dir.join(&cache_key);