Merge pull request #710 from gradio-app/json-fix

Switched from `json` to `orjson`

gradio.egg-info/requires.txt

@@ -5,6 +5,7 @@ ffmpy
 markdown-it-py[linkify,plugins]
 matplotlib
 numpy
+orjson
 pandas
 paramiko
 pillow

gradio/routes.py

@@ -9,8 +9,9 @@ import posixpath
 import secrets
 import traceback
 import urllib
-from typing import List, Optional, Type
+from typing import Any, List, Optional, Type
 
+import orjson
 import pkg_resources
 import uvicorn
 from fastapi import Depends, FastAPI, HTTPException, Request, status
@@ -19,6 +20,7 @@ from fastapi.middleware.cors import CORSMiddleware
 from fastapi.responses import FileResponse, HTMLResponse, JSONResponse
 from fastapi.security import OAuth2PasswordRequestForm
 from fastapi.templating import Jinja2Templates
+from jinja2.exceptions import TemplateNotFound
 from starlette.responses import RedirectResponse
 
 from gradio import encryptor, queueing, utils
@@ -37,7 +39,15 @@ GRADIO_BUILD_ROOT = "https://gradio.s3-us-west-2.amazonaws.com/{}/assets/".forma
     VERSION
 )
 
-app = FastAPI()
+
+class ORJSONResponse(JSONResponse):
+    media_type = "application/json"
+
+    def render(self, content: Any) -> bytes:
+        return orjson.dumps(content)
+
+
+app = FastAPI(default_response_class=ORJSONResponse)
 app.add_middleware(
     CORSMiddleware,
     allow_origins=["*"],
@@ -108,9 +118,15 @@ def main(request: Request, user: str = Depends(get_current_user)):
     else:
         config = {"auth_required": True, "auth_message": app.interface.auth_message}
 
-    return templates.TemplateResponse(
-        "frontend/index.html", {"request": request, "config": config}
-    )
+    try:
+        return templates.TemplateResponse(
+            "frontend/index.html", {"request": request, "config": config}
+        )
+    except TemplateNotFound:
+        raise ValueError(
+            "Did you install Gradio from source files? You need to build "
+            "the frontend by running /scripts/build_frontend.sh"
+        )
 
 
 @app.get("/config/", dependencies=[Depends(login_check)])

setup.py

@@ -22,6 +22,7 @@ setup(
         "markdown-it-py[linkify,plugins]",
         "matplotlib",
         "numpy",
+        "orjson",
         "pandas",
         "paramiko",
         "pillow",