Lists LB certs across multiple GCP projects.

list_lb_certs.py

#!/usr/bin/python

# Gets full list of ILB certs and provides days remaining until expiration

# Output breakout by index:
#   0: NAME header
#   1: TYPE header
#   2: CREATION_TIMESTAMP header
#   3: EXPIRE_TIME header
#   4: REGION header
#   5: MANAGED_STATUS header (skipping implementation of this, if this gets populated it causes issues)

import subprocess
import time
import sys
from datetime import datetime, date

def main():
    gcp_project_list = [
        "dev-6655",
        "it-4377",
        "prod-4101",
        "qv-1147",
        "dev-1814",
        "it-8258",
        "prod-8934",
        "qv-7090",
        "dev-1707",
        "it-9626",
        "prod-4903",
        "qv-9409"
    ]

    certs = []

    for index, project in zip(range(len(gcp_project_list)), gcp_project_list):
        certs.append(find_certs(project))
        progress_bar(index + 1, len(gcp_project_list))
    
    print()

    sorted_certs = sorted(certs, key=lambda cert: cert['days_remaining'])
    for cert in sorted_certs:
        formatted_string = "{:<15} | {:<10} | {:>5} | {:<30}".format(cert['project'], cert['name'], cert['days_remaining'], cert['domain'])
        print(formatted_string)

def find_certs(project):
    # each line item returned from gcloud is this many items long (excludes MANAGED_STATUS)
    cert_item_length = 5
    cert_list_output = subprocess.run(["gcloud", "compute", "ssl-certificates", "list", "--project", project],
                                      check=True,
                                      capture_output=True)

    # skip output headers
    cert_list_output_cleaned = cert_list_output.stdout.split()[6:]
    cert_count = int(len(cert_list_output_cleaned) / cert_item_length)

    for i in range(cert_count):
        offset = i * cert_item_length
        cert_name = cert_list_output_cleaned[offset].decode('utf-8')
        if cert_name.startswith('self-cert-'):
            continue
        expiration_date_output = cert_list_output_cleaned[offset + 3][:10].decode('utf-8')
        expiration_date = datetime.strptime(expiration_date_output, '%Y-%m-%d').date()
        todays_date = date.today()
        days_remaining = (expiration_date - todays_date).days

        region = cert_list_output_cleaned[offset + 4]
        cert_describe_output = subprocess.run(["gcloud", "compute", "ssl-certificates", "describe", cert_name, "--region", region, "--project", project],
                                      check=True,
                                      capture_output=True)
        cert_describe_output_cleaned = cert_describe_output.stdout.split()
        domain = cert_describe_output_cleaned[len(cert_describe_output_cleaned) - 3].decode('utf-8')

        return {'project': project, 'name': cert_name, 'days_remaining': days_remaining, 'domain': domain}

def progress_bar(iteration, total, length = 50):
    progress = int(length * iteration / total)
    bar = '=' * progress + '-' * (length - progress)
    percent = 100 * iteration / total
    sys.stdout.write(f'\r[{bar}] {percent:.2f}% Complete')
    sys.stdout.flush()

if __name__ == "__main__":
    main()