Hi,
I have an older (Python 2.7) Google App Engine app that I recently deployed
using Google Cloud Storage (gcloud). In a previous post, the community
here helped me resolve a storage bucket permissions issue (thanks). Now,
I'm having issues using the images.get_serving_url not working for uploaded
image blobs. The Images API is returning 'TransformationError'. This code
worked previously for years in production before the switch to google cloud
storage.
I made a very simple test case to replicate the issue. Are there new
requirements, or should this work?
class testUpload(webapp.RequestHandler):
def get(self):
uploadUrl = blobstore.create_upload_url('/testUploadHandler')
print("Generated upload url: %s" % uploadUrl)
self.response.out.write("""
<html><body>
<form action="{0}" method="POST" enctype="multipart/form-data">
Upload File: <input type="file" name="file"><br>
<input type="submit" name="submit" value="Submit">
</form>
</body></html>""".format(uploadUrl))
class testUploadHandler(blobstore_handlers.BlobstoreUploadHandler):
def post(self):
logging.info("testUploadHandler called.")
upload = self.get_uploads()[0]
blob_key = upload.key()
image_url = images.get_serving_url(blob_key)
self.redirect(image_url)
The deployed code returns the following error on the web server (local dev
server is fine):
Traceback (most recent call last):
File
"/base/alloc/tmpfs/dynamic_runtimes/python27g/fdc6d631da52d25b/python27/python27_lib/versions/third_party/webapp2-2.5.2/webapp2.py",
line 1535, in __call__
rv = self.handle_exception(request, response, e)
File
"/base/alloc/tmpfs/dynamic_runtimes/python27g/fdc6d631da52d25b/python27/python27_lib/versions/third_party/webapp2-2.5.2/webapp2.py",
line 1529, in __call__
rv = self.router.dispatch(request, response)
File
"/base/alloc/tmpfs/dynamic_runtimes/python27g/fdc6d631da52d25b/python27/python27_lib/versions/third_party/webapp2-2.5.2/webapp2.py",
line 1278, in default_dispatcher
return route.handler_adapter(request, response)
File
"/base/alloc/tmpfs/dynamic_runtimes/python27g/fdc6d631da52d25b/python27/python27_lib/versions/third_party/webapp2-2.5.2/webapp2.py",
line 1102, in __call__
return handler.dispatch()
File
"/base/alloc/tmpfs/dynamic_runtimes/python27g/fdc6d631da52d25b/python27/python27_lib/versions/third_party/webapp2-2.5.2/webapp2.py",
line 572, in dispatch
return self.handle_exception(e, self.app.debug)
File
"/base/alloc/tmpfs/dynamic_runtimes/python27g/fdc6d631da52d25b/python27/python27_lib/versions/third_party/webapp2-2.5.2/webapp2.py",
line 570, in dispatch
return method(*args, **kwargs)
File
"/base/data/home/apps/s~puzzleflow-dev/20210325t013659.433969250928848570/puzzleflow.py",
line 4171, in post
image_url = images.get_serving_url(blob_key)
File
"/base/alloc/tmpfs/dynamic_runtimes/python27g/fdc6d631da52d25b/python27/python27_lib/versions/1/google/appengine/api/images/__init__.py",
line 1866, in get_serving_url
return rpc.get_result()
File
"/base/alloc/tmpfs/dynamic_runtimes/python27g/fdc6d631da52d25b/python27/python27_lib/versions/1/google/appengine/api/apiproxy_stub_map.py",
line 615, in get_result
return self.__get_result_hook(self)
File
"/base/alloc/tmpfs/dynamic_runtimes/python27g/fdc6d631da52d25b/python27/python27_lib/versions/1/google/appengine/api/images/__init__.py",
line 1970, in get_serving_url_hook
raise _ToImagesError(e, readable_blob_key)
TransformationError
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