73 lines
2.4 KiB
Python
73 lines
2.4 KiB
Python
import argparse
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import pathlib
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import subprocess
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import sys
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import typing
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def configure_parser(parser: argparse.ArgumentParser) -> None:
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parser.description = "Fetch the openshift config for CARA"
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parser.set_defaults(handler=handler)
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parser.add_argument(
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"instance", choices=['cara', 'test-cara'],
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help="Pick the instance for which you want to fetch the config",
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)
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parser.add_argument(
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"--output-directory", default='config',
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help="Location to put the config files",
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)
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def get_oc_server() -> typing.Optional[str]:
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# Return the openshift server that is currently logged in, or None if not logged in
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# (or other issues getting the information from the oc client).
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try:
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subprocess.check_output(['oc', 'whoami'], stderr=subprocess.PIPE)
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except subprocess.CalledProcessError:
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# User not logged on, or oc command missing.
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return None
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return subprocess.run([
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'oc', 'whoami', '--show-server'
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], check=True, stdout=subprocess.PIPE).stdout.decode().strip()
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def fetch_config(output_directory: pathlib.Path):
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output_directory.mkdir(exist_ok=True, parents=True)
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for component in ['routes', 'configmap', 'services', 'imagestreams', 'buildconfig', 'deploymentconfig']:
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with (output_directory / f'{component}.json').open('wt') as fh:
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cmd = ['oc', 'get', '--export', '-o', 'json', component]
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print(f'Running: {" ".join(cmd)}')
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subprocess.run(cmd, stdout=fh, check=True)
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print(f'Config in: {output_directory.absolute()}')
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def handler(args: argparse.ArgumentParser) -> None:
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if args.instance == 'cara':
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login_server = 'https://openshift.cern.ch:443'
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project_name = 'cara'
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elif args.instance == 'test-cara':
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login_server = 'https://openshift-dev.cern.ch:443'
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project_name = 'test-cara'
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actual_login_server = get_oc_server()
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if actual_login_server != login_server:
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print(actual_login_server)
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print(f'\nPlease login to the correct openshift server with: \n\n oc login {login_server}\n', file=sys.stderr)
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sys.exit(1)
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subprocess.run(['oc', 'project', project_name], stdout=subprocess.DEVNULL, check=True)
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fetch_config(pathlib.Path(args.output_directory))
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def main():
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parser = argparse.ArgumentParser()
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configure_parser(parser)
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args = parser.parse_args()
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args.handler(args)
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if __name__ == '__main__':
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main()
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