Connecting function to empty cloud storage bucket - google-cloud-platform

Question

I am trying to use the following info from Google deployment manager examples on GitHub.
empty_bucket_in_function.yaml
empty_bucket_cf.yaml
imports:
- path: empty_bucket_cf.jinja
resources:
- name: my-function
type: empty_bucket_cf.jinja
properties:
project: <PROJECT_NAME>
region: europe-west1
entryPoint: handler
runtime: nodejs8
bucket: lskflsjfsj
empty_bucket_cf.jinja
{% set BUCKET = properties['bucket'] + '-bucket' %} resources:
#- type: cloudfunctions.v1.function
- type: gcp-types/cloudfunctions-v1:projects.locations.functions name: my-function properties:
parent: projects/{{ properties['project'] }}/locations/{{ properties['region'] }}
location: {{ properties['region'] }}
function: my-{{ properties['bucket'] }}
sourceArchiveUrl: gs://$(ref.{{ BUCKET }}.name)/my-function
entryPoint: {{ properties['entryPoint'] }}
runtime: {{ properties['runtime'] }}
eventTrigger:
resource: $(ref.my-topic.name)
eventType: providers/cloud.pubsub/eventTypes/topic.publish
#- type: pubsub.v1.topic
- type: gcp-types/pubsub-v1:projects.topics name: my-topic properties:
topic: {{ properties['bucket'] }}-topic
#- type: storage.v1.bucket
- type: gcp-types/storage-v1:buckets name: {{ BUCKET }} properties:
predefinedAcl: projectPrivate
projection: full
location: US
storageClass: STANDARD
While deploying using deployment manager I am getting error as
testsetup has resource warnings
my-function: {"ResourceType":"gcp-types/cloudfunctions-v1:projects.locations.functions","ResourceErrorCode":"400","ResourceErrorMessage":"Failed to retrieve function source code"}
Deployment properties
Any idea why this is not a bug in Google Cloud Platform GitHub repository. Isn't it the purpose of empty_bucket config to create CFs with empty bucket.
Note: Sometimes it executes successfully as well.

Answer 1

I don't what Google had in mind when they publish this example, but it can't work. If your bucket is empty, the function has no code. However, when you deploy a function, the code is compiled/parsed, the entry-point checked (exists, correct signature,...), and deployed on the environment.
Here, no entry point, no code to compile/parse thus no deployment -> It's normal, but the example is disturbing. You can open an issue on the repos.