output: add progress for commit

dvc/output.py

@@ -787,12 +787,17 @@ class Output:
                     self.hash_name,
                     ignore=self.dvcignore,
                 )
+                with Callback.as_tqdm_callback(
+                    desc=f"Committing {self} to cache",
+                    unit="file",
+                ) as cb:
                     otransfer(
                         staging,
                         self.cache,
                         {obj.hash_info},
                         shallow=False,
                         hardlink=hardlink,
+                        callback=cb,
                     )
             if relink:
                 rel = self.fs.path.relpath(filter_info or self.fs_path)
@@ -822,12 +827,17 @@ class Output:
         save_obj = obj.filter(prefix)
         assert isinstance(save_obj, Tree)
         checkout_obj = save_obj.get_obj(self.cache, prefix)
+        with Callback.as_tqdm_callback(
+            desc=f"Committing {self} to cache",
+            unit="file",
+        ) as cb:
             otransfer(
                 staging,
                 self.cache,
                 {save_obj.hash_info} | {oid for _, _, oid in save_obj},
                 shallow=True,
                 hardlink=hardlink,
+                callback=cb,
             )
         return checkout_obj
 
@@ -1423,7 +1433,18 @@ class Output:
 
         assert staging
         assert obj.hash_info
-        otransfer(staging, self.cache, {obj.hash_info}, hardlink=relink, shallow=False)
+        with Callback.as_tqdm_callback(
+            desc=f"Adding {self} to cache",
+            unit="file",
+        ) as cb:
+            otransfer(
+                staging,
+                self.cache,
+                {obj.hash_info},
+                hardlink=relink,
+                shallow=False,
+                callback=cb,
+            )
 
         if relink:
             with CheckoutCallback(