This snippet will help to debug the "cannot create or get bucket" error with the Singularity Registry client

sregistry_debug_test1.py

# Test 1: Cannot Create Bucket

# Here is a set of commands to run to better explain the "Cannot get or create
# the group" error. I suspect the underlying issue is not having permissions to use storage.
# make sure these same variables are still exported

export GOOGLE_CLOUD_PROJECT=...
export GOOGLE_APPLICATION_CREDENTIALS="...

# You need to have storage admin permissions on this project
export SREGISTRY_GOOGLE_PROJECT=...
export SREGISTRY_GOOGLE_STORAGE_BUCKET=...
export SREGISTRY_CLIENT=google-compute

## Now open up an ipython shell
# if you have sregistry installed, you will have these dependencies
# ipython
from googleapiclient.discovery import build as discovery_build
from oauth2client.client import GoogleCredentials
from google.cloud import storage
import os

bucket_name = os.environ['SREGISTRY_GOOGLE_STORAGE_BUCKET']

# This is a client for storage, and our credentials from the environment
creds = GoogleCredentials.get_application_default()

# Now handles for interactions with storage and compute
# We are initializing the last two just to make sure no errors trigger
bucket_service = storage.Client()
storage_service = discovery_build('storage', 'v1', credentials=creds)
compute_service = discovery_build('compute', 'v1', credentials=creds) 

# Here is where the error is going to trigger - tell me what message you get here
bucket = bucket_service.get_bucket(bucket_name)

# When I run this command (with correct permissions, and an existing bucket)
# I get back a bucket
# bucket
# <Bucket: sregistry-vanessa>