I'm creating a very simple server to pass images to a mobile app. My images
are stored in Google Cloud Storage. I'm new to App Engine in the py3 env,
I've been running a py2.7 app for years. I'm also new to Cloud Storage.
I have a bucket in storage with a bunch of images. I am able to access that
bucket from appengine and iterate over the objects. If I make the bucket's
permissions public I can simply pass the url to my app to display the
images.
Ideally I don't have to make the bucket's permissions public. It seems
there are a couple of options
1) Looks like google.appengine.api.blobstore can create a url:
*blobkey = blobstore.create_gs_key(gs_path) serving_url =
images.get_serving_url(blobkey, secure_url=False)*
Running this I get an error in my logs:
*AssertionError: No api proxy found for service "blobstore"*
If I create the *BlobKey* directly and pass that to the images function I
get
*AssertionError: No api proxy found for service "images"*
2) Looks like theres a way to generate a url that times out after a
certain period of time:
*blobs = storage_client.list_blobs(bucket_name, prefix=myPrefix,
delimiter=None)*
*for blob in blobs:*
* exp = datetime.timedelta(minutes=15)*
* blob.generate_signed_url(version="v4",expiration=**exp*
*,method="GET")*
Running that I get a diff error:
*AttributeError: you need a private key to sign credentials.the credentials
you are currently using <class
'google.auth.compute_engine.credentials.Credentials'> just contains a
token. see
https://googleapis.dev/python/google-api-core/latest/auth.html#setting-up-a-service-account
for more details.*
I've found others with the *no api proxy error* and it seems in all those
cases it's when people are trying to use these api's outside of the
AppEngine Environment. But I am running it within an AppEngine app so those
posts aren't helpful.
My *requirements.txt* is:
Flask==2.0.1
urlfetch
googleapis_common_protos
appengine-python-standard
google-cloud-ndb
google-cloud-logging
google-cloud-storage
Any advice would be helpful, been banging my head on this for several hours.
Thanks!
Daniel
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