Fix bug where file examples can be corrupted if has multiple extensions (#4440)

* Fix bug

* Add to changelog

* Add test

* Remove breakpoint

* fix test

* increment version

* update client version req

---------

Co-authored-by: Abubakar Abid <abubakar@huggingface.co>

client/python/CHANGELOG.md

@@ -6,6 +6,25 @@ No changes to highlight.
 
 ## Bug Fixes:
 
+No changes to highlight.
+
+## Breaking Changes:
+
+No changes to highlight.
+
+## Full Changelog:
+
+No changes to highlight.
+
+# 0.2.6
+
+## New Features:
+
+No changes to highlight.
+
+## Bug Fixes:
+
+- Fixed bug file deserialization didn't preserve all file extensions by [@freddyaboulton](https://github.com/freddyaboulton) in [PR 4440](https://github.com/gradio-app/gradio/pull/4440)
 - Fixed bug where mounted apps could not be called via the client by [@freddyaboulton](https://github.com/freddyaboulton) in [PR 4435](https://github.com/gradio-app/gradio/pull/4435)
 
 ## Breaking Changes:

client/python/gradio_client/serializing.py

@@ -286,11 +286,9 @@ class FileSerializable(Serializable):
                         root_url + "file=" + filepath,
                         hf_token=hf_token,
                         dir=save_dir,
-                    ).name
+                    )
                 else:
-                    file_name = utils.create_tmp_copy_of_file(
-                        filepath, dir=save_dir
-                    ).name
+                    file_name = utils.create_tmp_copy_of_file(filepath, dir=save_dir)
             else:
                 data = x.get("data")
                 assert data is not None, f"The 'data' field is missing in {x}"

client/python/gradio_client/utils.py

@@ -6,6 +6,7 @@ import json
 import mimetypes
 import os
 import pkgutil
+import secrets
 import shutil
 import tempfile
 from concurrent.futures import CancelledError
@@ -273,40 +274,27 @@ async def get_pred_from_ws(
 
 def download_tmp_copy_of_file(
     url_path: str, hf_token: str | None = None, dir: str | None = None
-) -> tempfile._TemporaryFileWrapper:
+) -> str:
     if dir is not None:
         os.makedirs(dir, exist_ok=True)
     headers = {"Authorization": "Bearer " + hf_token} if hf_token else {}
-    prefix = Path(url_path).stem
-    suffix = Path(url_path).suffix
-    file_obj = tempfile.NamedTemporaryFile(
-        delete=False,
-        prefix=prefix,
-        suffix=suffix,
-        dir=dir,
-    )
+    directory = Path(dir or tempfile.gettempdir()) / secrets.token_hex(20)
+    directory.mkdir(exist_ok=True, parents=True)
+    file_path = directory / Path(url_path).name
+
     with requests.get(url_path, headers=headers, stream=True) as r, open(
-        file_obj.name, "wb"
+        file_path, "wb"
     ) as f:
         shutil.copyfileobj(r.raw, f)
-    return file_obj
+    return str(file_path.resolve())
 
 
-def create_tmp_copy_of_file(
-    file_path: str, dir: str | None = None
-) -> tempfile._TemporaryFileWrapper:
-    if dir is not None:
-        os.makedirs(dir, exist_ok=True)
-    prefix = Path(file_path).stem
-    suffix = Path(file_path).suffix
-    file_obj = tempfile.NamedTemporaryFile(
-        delete=False,
-        prefix=prefix,
-        suffix=suffix,
-        dir=dir,
-    )
-    shutil.copy2(file_path, file_obj.name)
-    return file_obj
+def create_tmp_copy_of_file(file_path: str, dir: str | None = None) -> str:
+    directory = Path(dir or tempfile.gettempdir()) / secrets.token_hex(20)
+    directory.mkdir(exist_ok=True, parents=True)
+    dest = directory / Path(file_path).name
+    shutil.copy2(file_path, dest)
+    return str(dest.resolve())
 
 
 def get_mimetype(filename: str) -> str | None:

client/python/gradio_client/version.txt

@@ -1 +1 @@
-0.2.5
+0.2.6

client/python/test/test_utils.py

@@ -62,7 +62,7 @@ def test_download_private_file():
     url_path = "https://gradio-tests-not-actually-private-space.hf.space/file=lion.jpg"
     hf_token = "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"  # Intentionally revealing this key for testing purposes
     file = utils.download_tmp_copy_of_file(url_path=url_path, hf_token=hf_token)
-    assert file.name.endswith(".jpg")
+    assert Path(file).name.endswith(".jpg")
 
 
 @pytest.mark.parametrize(

requirements.txt

@@ -3,7 +3,7 @@ aiohttp
 altair>=4.2.0
 fastapi
 ffmpy
-gradio_client>=0.2.4
+gradio_client>=0.2.6
 httpx
 huggingface_hub>=0.14.0
 Jinja2

test/test_examples.py

@@ -1,5 +1,6 @@
 import os
 import tempfile
+from pathlib import Path
 from unittest.mock import patch
 
 import pytest
@@ -372,3 +373,27 @@ async def test_multiple_file_flagging(tmp_path):
 
         assert len(prediction[0]) == 2
         assert all(isinstance(d, dict) for d in prediction[0])
+
+
+@pytest.mark.asyncio
+async def test_examples_keep_all_suffixes(tmp_path):
+    with patch("gradio.helpers.CACHED_FOLDER", str(tmp_path)):
+        file_1 = tmp_path / "foo.bar.txt"
+        file_1.write_text("file 1")
+        file_2 = tmp_path / "file_2"
+        file_2.mkdir(parents=True)
+        file_2 = file_2 / "foo.bar.txt"
+        file_2.write_text("file 2")
+        io = gr.Interface(
+            fn=lambda x: x.name,
+            inputs=gr.File(),
+            outputs=[gr.File()],
+            examples=[[str(file_1)], [str(file_2)]],
+            cache_examples=True,
+        )
+        prediction = await io.examples_handler.load_from_cache(0)
+        assert Path(prediction[0]["name"]).read_text() == "file 1"
+        assert prediction[0]["orig_name"] == "foo.bar.txt"
+        prediction = await io.examples_handler.load_from_cache(1)
+        assert Path(prediction[0]["name"]).read_text() == "file 2"
+        assert prediction[0]["orig_name"] == "foo.bar.txt"