computer-playbook/cli/meta/role_folder.py

77 lines
2.4 KiB
Python

#!/usr/bin/env python3
"""
CLI Script: get_role_folder_cli.py
This script determines the appropriate Ansible role folder based on the provided application_id
by inspecting each role's vars/main.yml within the roles directory. By default, it assumes the
roles directory is located at the project root, relative to this script's location.
Example:
./get_role_folder_cli.py --application-id my-app-id
"""
import os
import sys
import argparse
import yaml
def get_role_folder(application_id, roles_path):
"""
Find the role directory under `roles_path` whose vars/main.yml contains the specified application_id.
:param application_id: The application_id to match.
:param roles_path: Path to the roles directory.
:return: The name of the matching role directory.
:raises RuntimeError: If no match is found or if an error occurs while reading files.
"""
if not os.path.isdir(roles_path):
raise RuntimeError(f"Roles path not found: {roles_path}")
for role in sorted(os.listdir(roles_path)):
role_dir = os.path.join(roles_path, role)
vars_file = os.path.join(role_dir, 'vars', 'main.yml')
if os.path.isfile(vars_file):
try:
with open(vars_file, 'r') as f:
data = yaml.safe_load(f) or {}
except Exception as e:
raise RuntimeError(f"Failed to load {vars_file}: {e}")
if data.get('application_id') == application_id:
return role
raise RuntimeError(f"No role found with application_id '{application_id}' in {roles_path}")
def main():
parser = argparse.ArgumentParser(
description='Determine the Ansible role folder by application_id'
)
parser.add_argument(
'application_id',
help='The application_id defined in vars/main.yml to search for'
)
parser.add_argument(
'-r', '--roles-path',
default=os.path.join(
os.path.dirname(os.path.realpath(__file__)),
os.pardir, os.pardir,
'roles'
),
help='Path to the roles directory (default: roles/ at project root)'
)
args = parser.parse_args()
try:
folder = get_role_folder(args.application_id, args.roles_path)
print(folder)
sys.exit(0)
except RuntimeError as err:
print(f"Error: {err}", file=sys.stderr)
sys.exit(1)
if __name__ == '__main__':
main()