import datetime
import os
import os.path

from ConfigParser import ConfigParser
from glob import glob

# deprecated. Use barman instead

# check postgresql backup.
# this script expects the package backup-postgresql >= 2.0
# since in the end of backup postgresql archives a *backup*,
# we can use it to monitor the backup
def __run__(params):
    min_age = int(params.get('min_backup_age'))
    min_date = datetime.datetime.now() - datetime.timedelta(hours=min_age)

    cp = ConfigParser()
    conf_file = "/etc/dbas/postgresql/backup.conf"
    cp.read(conf_file)

    archive_path = cp.get('backup_physical', 'backup_archive')

    for f in glob(os.path.join(archive_path, '*backup*')):
        s = os.stat(f)
        f_date = datetime.datetime.fromtimestamp(s.st_ctime)
        if f_date >= min_date:
            return [0, 'OK: Last backup {0}'.format(f_date)]
    return [2, 'CRITICAL: no recent backup found']