References between templates using python

[komasoftware]

I am trying something very basic but struggling to get this to work. I have 2 templates :

• environment_folder.py : create a folder
• front_end.py : create a project

I am trying to combine both templates together in a 3rd master template environment.py The front_end.py needs a folder Id. It expects the folder Id as one of the properties like this :

_(template front_end.py)_

    ....
    folder_id = context.properties["environment_folder"]
    resources.append({
        'name': project_id,
        'type': 'cloudresourcemanager.v1.project',
        'properties': {
            'name': project_name,
            'projectId': project_id,
            'parent': {
                'type': 'folder',
                'id': folder_id
            }
        }
    })
   ...

The code below defines an explicit depends on the folder creation before the project creation can happen, but passing the reference of the folder ID in the properties using its reference _"environment_folder": "$(ref.environment_folder.folder_id)"_ does not work. How can I reference the finalValue for the reference in python ?

(master template environment.py)

def generate_config(context):
    """Main entry point for Deployment Manager logic"""

    resources = []
    outputs = []

    # environment outputs
    outputs.append({
        "name": "environment_name",
        "value": context.properties["envName"]
    })

    # environment folder
    resources.append({
        "name": "environment_folder",
        "type": "environment_folder.py",
        "properties": context.properties
    })
    outputs.append({
        "name": "environment_folder_id",
        "value": "$(ref.environment_folder.folder_id)"
    })

    # front_end project
    resources.append({
        "name": "front_end",
        "type": "front_end.py",
        "properties": {
            "envName": context.properties["envName"],
            "environment_folder": "$(ref.environment_folder.folder_id)"
        },
        "metadata": {
            "dependsOn": ["environment_folder"]
        }
    })

    return {"resources": resources, "outputs": outputs}

Any suggestions very welcome.

[komasoftware]

I seem not to be the only one struggling here

https://stackoverflow.com/questions/59460623/how-to-create-a-folder-a-project-under-it-with-deployment-manager-google-clou

[komasoftware]

see also https://github.com/GoogleCloudPlatform/deploymentmanager-samples/issues/353#issuecomment-579194769

[komasoftware]

Answered in a thread on #353