Google Cloud Certificate Manager

Warnings

• breaking This library requires Python 3.9 or newer. Running on older Python versions (e.g., 3.8 or below) will result in installation failures or runtime errors.
  Fix: Upgrade your Python environment to 3.9 or higher.
• gotcha Authentication must be set up correctly for the client to interact with Google Cloud services. Without proper authentication (e.g., Application Default Credentials, service account key, or `GOOGLE_APPLICATION_CREDENTIALS` environment variable), `google.auth.exceptions.DefaultCredentialsError` or similar authentication errors will occur.
  Fix: Refer to Google Cloud's authentication documentation for Python client libraries to configure Application Default Credentials or explicitly provide credentials to the client.
• gotcha The Certificate Manager API must be explicitly enabled in your Google Cloud project for the client library calls to succeed. If the API is not enabled, you will receive `PERMISSION_DENIED` errors.
  Fix: Navigate to the Google Cloud Console, search for 'Certificate Manager API', and ensure it is enabled for your project.
• gotcha When using `CertificateManagerClient` as a context manager (`with certificate_manager_v1.CertificateManagerClient() as client:`), be aware that exiting the `with` block will close the underlying transport. This can cause issues if the transport object is shared with other client instances.
  Fix: Only use the client as a context manager if the transport is not shared. For long-running applications or shared transports, initialize the client outside a `with` statement and explicitly close the client's transport when no longer needed using `client.close()`.

Install

• pip install google-cloud-certificate-manager Install stable version

Imports

• CertificateManagerClient
  wrong:

  from google.cloud.certificate_manager import CertificateManagerClient

  correct:

  from google.cloud import certificate_manager_v1

  The client class is typically exposed under a versioned submodule (e.g., `_v1`) to allow for API versioning.

Quickstart

This quickstart demonstrates how to initialize the `CertificateManagerClient` and list existing certificates within a specified Google Cloud project and location. Ensure your `GOOGLE_CLOUD_PROJECT` environment variable is set or replace 'your-project-id' with your actual project ID. Authentication is handled automatically via Application Default Credentials (ADC) if configured.

import os
from google.cloud import certificate_manager_v1

# Set your Google Cloud Project ID
project_id = os.environ.get('GOOGLE_CLOUD_PROJECT', 'your-project-id')
location = 'global' # Certificate Manager resources are often global

def list_certificates():
    client = certificate_manager_v1.CertificateManagerClient()
    parent = client.common_location_path(project_id, location)

    print(f"Listing certificates in project {project_id} in location {location}:")
    try:
        for certificate in client.list_certificates(parent=parent):
            print(f"- Certificate: {certificate.name} (DNS names: {', '.join(certificate.managed.dns_authorizations or ['N/A'])})")
    except Exception as e:
        print(f"Error listing certificates: {e}")

if __name__ == "__main__":
    list_certificates()