Description:

This is an issue found when uploading Docker file on Quay Builds page, after choose "Start New Build", upload the target Docker File, Quay redirect to Quay 500 Error page. See error logs.

Note: This issue can be reproduced with Quay 3.3.0

Images:

quay.io/quay/quay:v3.3.1-3

quay.io/quay/quay-builder:v3.3.1-3

Steps:

1. Deploy Quay on GCP and use GCP Object Storage as Quay backend Storage
2. Enable Quay Build on Quay-config app
3. Login Quay Console 
4. Create new Image repository
5. Navigate to the new repository's build page
6. Click "Start New Build"
7. Upload Docker file

Expected Results:

Quay start new build by using the uploaded Docker file.

Actual Results:

Quay redirect to Quay 500 error page.

Quay Logs of Quay App POD:

8731 gunicorn-web stdout | 2020-07-23 07:15:14,918 [419] [ERROR] [gunicorn.error] Error handling request /api/v1/filedrop/
 8732 Traceback (most recent call last):
 8733  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/gunicorn/workers/base_async.py", line 56, in handle
 8734   self.handle_request(listener_name, req, client, addr)
 8735  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/gunicorn/workers/ggevent.py", line 160, in handle_request
 8736   addr)
 8737  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/gunicorn/workers/base_async.py", line 107, in handle_request
 8738   respiter = self.wsgi(environ, resp.start_response)
 8739  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/flask/app.py", line 2463, in _call_
 8740   return self.wsgi_app(environ, start_response)
 8741  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/werkzeug/middleware/proxy_fix.py", line 232, in _call_
 8742   return self.app(environ, start_response)
 8743  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/flask/app.py", line 2449, in wsgi_app
 8744   response = self.handle_exception(e)
 8745  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/flask_restful/_init_.py", line 269, in error_router
 8746   return original_handler(e)
 8747  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/flask/app.py", line 1866, in handle_exception
 8748   reraise(exc_type, exc_value, tb)
 8749  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/flask_restful/_init_.py", line 266, in error_router
 8750   return self.handle_error(e)
 8751  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/flask_restful/utils/cors.py", line 35, in wrapped_function
 8752   resp = make_response(f(*args, **kwargs))
 8753  File "/quay-registry/endpoints/api/_init_.py", line 61, in handle_error
 8754   return super(ApiExceptionHandlingApi, self).handle_error(error)
 8755  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/flask/app.py", line 2446, in wsgi_app
 8756   response = self.full_dispatch_request()
 8757  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/flask/app.py", line 1951, in full_dispatch_request
 8758   rv = self.handle_user_exception(e)
 8759  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/flask_restful/_init_.py", line 269, in error_router
 8760   return original_handler(e)
 8761  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/flask/app.py", line 1820, in handle_user_exception
 8762   reraise(exc_type, exc_value, tb)
 8763  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/flask_restful/_init_.py", line 266, in error_router
 8764   return self.handle_error(e)
 8765  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/flask_restful/utils/cors.py", line 35, in wrapped_function
 8766   resp = make_response(f(*args, **kwargs))
 8767  File "/quay-registry/endpoints/api/_init_.py", line 61, in handle_error
 8768   return super(ApiExceptionHandlingApi, self).handle_error(error)
 8769  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/flask/app.py", line 1949, in full_dispatch_request
8770   rv = self.dispatch_request()
 8771  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/flask/app.py", line 1935, in dispatch_request
 8772   return self.view_functions[rule.endpoint](**req.view_args)
 8773  File "/quay-registry/endpoints/decorators.py", line 197, in wrapper
 8774   return func(*args, **kwargs)
 8775  File "/quay-registry/auth/decorators.py", line 65, in wrapper
 8776   return func(*args, **kwargs)
 8777  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/flask_restful/utils/cors.py", line 35, in wrapped_function
 8778   resp = make_response(f(*args, **kwargs))
 8779  File "/quay-registry/endpoints/csrf.py", line 73, in wrapper
 8780   resp = func(*args, **kwargs)
 8781  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/flask_restful/_init_.py", line 458, in wrapper
 8782   resp = resource(*args, **kwargs)
 8783  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/flask/views.py", line 89, in view
 8784   return self.dispatch_request(*args, **kwargs)
 8785  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/flask_restful/_init_.py", line 573, in dispatch_request
 8786   resp = meth(*args, **kwargs)
 8787  File "/quay-registry/endpoints/decorators.py", line 145, in wrapper
 8788   return func(*args, **kwargs)
 8789  File "/quay-registry/endpoints/decorators.py", line 120, in wrapper
 8790   return func(*args, **kwargs)
 8791  File "/quay-registry/endpoints/api/_init_.py", line 416, in wrapped
 8792   return func(self, *args, **kwargs)
 8793  File "/quay-registry/endpoints/api/build.py", line 544, in post
 8794   (url, file_id) = user_files.prepare_for_drop(mime_type, requires_cors=True)
 8795  File "/quay-registry/data/userfiles.py", line 94, in prepare_for_drop
 8796   url = self._storage.get_direct_upload_url(self._locations, path, mime_type, requires_cors)
 8797  File "/quay-registry/storage/distributedstorage.py", line 24, in wrapper
 8798   storage = self._storages[random.sample(locations, 1)[0]]
 8799 KeyError: 'default'
 8800 gunicorn-web stdout | 2020-07-23 07:15:14,922 [419] [INFO] [gunicorn.access] - - [23/Jul/2020:07:15:14 +0000] "POST /api/v1/filedrop/ HTTP/1.0" 500 0 "   " ""