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#
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"""Kerberos command"""
import daemon
from daemon.pidfile import TimeoutPIDLockFile

from airflow import settings
from airflow.security import kerberos as krb
from airflow.utils import cli as cli_utils
from airflow.utils.cli import setup_locations


@cli_utils.action_cli
def kerberos(args):
    """Start a kerberos ticket renewer"""
    print(settings.HEADER)

    if args.daemon:
        pid, stdout, stderr, _ = setup_locations(
            "kerberos", args.pid, args.stdout, args.stderr, args.log_file
        )
        with open(stdout, 'w+') as stdout_handle, open(stderr, 'w+') as stderr_handle:
            ctx = daemon.DaemonContext(
                pidfile=TimeoutPIDLockFile(pid, -1),
                stdout=stdout_handle,
                stderr=stderr_handle,
            )

            with ctx:
                krb.run(principal=args.principal, keytab=args.keytab)
    else:
        krb.run(principal=args.principal, keytab=args.keytab)
