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feat: Added Temporary token based authentication similar to cli --access-token-file #1467

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AmitChotaliya
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Fixes #1165

This features allows using access token in the sdk without having any of the GCP related credentials.

Example Usage:

  • Generate the token using CLI gcloud auth print-access-token [email protected]
  • Generate the token using python.
from google.auth import compute_engine
from google.auth import default, credentials
from google.auth.transport.requests import Request
import google.auth
from google.cloud import compute_v1

def generate_access_token():    
    creds, project = google.auth.default()    
    
    creds.refresh(Request())
    return creds.token, creds.expiry
  • Copy this access token to a different/local machine or container having no other google credentials.
  • Set the required environment variable.
export GOOGLE_TEMPORARY_ACCESS_TOKEN=token copied from above
  • Try running the following python code to verify if the credentials are working.
def list_virtual_machines(project_id, creds):
    # Create a client for Compute Engine with the provided access token
    compute_client = compute_v1.NetworksClient(credentials=creds)

    # List VMs
    vm_list = compute_client.list(project=project_id)

    # Print VM names
    print("Virtual Machines:")
    for vm in vm_list:
        print(vm.name)
os.environ["GOOGLE_TEMPORARY_ACCESS_TOKEN"] = "access token copied from above"
    creds, project_id = google.auth.default()    
    list_virtual_machines("bamboo-weft-375813", creds=creds)

It should work fine till the token is valid.

@AmitChotaliya AmitChotaliya requested review from a team as code owners February 6, 2024 10:19
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@AmitChotaliya AmitChotaliya changed the title Added Temporary token based authentication similar to cli --access-token-file feat: Added Temporary token based authentication similar to cli --access-token-file Feb 6, 2024
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Support for CLOUDSDK_AUTH_ACCESS_TOKEN environment variable
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