Add fs implementation and add to trove

trovedb/fuse/__main__.py

@@ -1,5 +1,7 @@
+from pathlib import Path
 from . import server
 from trovedb import trovedb
+from trovedb import fs
 from argparse import ArgumentParser
 
 def main():
@@ -8,7 +10,14 @@ def main():
     parser.add_argument("mountpoint", help="Path to the mount point")
 
     args = parser.parse_args()
-    server.serve(trovedb.TroveImpl.open(args.db, create=True), args.mountpoint)
+
+    file = Path(args.db)
+    if not file.exists():
+        print(f"Database not found: {file}")
+        return
+
+    impl = trovedb.TroveImpl.open(str(file)) if not file.is_dir() else fs.FSTrove.open(str(file))
+    server.serve(impl, args.mountpoint)
 
 if __name__ == '__main__':
     main()

trovedb/fuse/server.py

@@ -213,6 +213,36 @@ class TroveFuseOps(pyfuse3.Operations):
             raise pyfuse3.FUSEError(errno.EISDIR)
         parent.unlink(name_str)
 
+    async def rename(self, parent_inode_old, name_old, parent_inode_new, name_new, flags, ctx):
+        old_parent = self._note_or_error(parent_inode_old)
+        new_parent = self._note_or_error(parent_inode_new)
+        if not isinstance(old_parent, TroveTree) or not isinstance(new_parent, TroveTree):
+            raise pyfuse3.FUSEError(errno.ENOTDIR)
+
+        name_old_str = name_old.decode()
+        name_new_str = name_new.decode()
+
+        old_entries = old_parent.list()
+        if name_old_str not in old_entries:
+            raise pyfuse3.FUSEError(errno.ENOENT)
+
+        child_id = old_entries[name_old_str]
+        child = self._trove.get_raw_note(child_id)
+        if child is None:
+            raise pyfuse3.FUSEError(errno.ENOENT)
+
+        # Remove existing target if present
+        new_entries = new_parent.list()
+        if name_new_str in new_entries:
+            target = self._trove.get_raw_note(new_entries[name_new_str])
+            if target is not None and isinstance(target, TroveTree):
+                if target.list():
+                    raise pyfuse3.FUSEError(errno.ENOTEMPTY)
+            new_parent.unlink(name_new_str)
+
+        new_parent.link(name_new_str, child)
+        old_parent.unlink(name_old_str)
+
 
 # ------------------------------------------------------------------
 # Serve