import yaml
import time

def __run__(params):
    try:
        string = yaml.load(params.get('string'))
        file = yaml.load(params.get('file'))
        gracetime = int(params.get('gracetime'))
    except Exception, e:
        return [2, "CRITICAL - Error : %s" % repr(e)]

    now = time.localtime()
    if now.tm_hour < gracetime:
        return [0, "OK - Free check until %dh" % gracetime]

    fname = open(file)
    check = 0

    for line in fname:
        if string in line:
            return [0, "OK - string '%s' found on %s" % (string, file)]
            check = 1
            break

    if not check:
            return [2, "CRITICAL - string '%s' NOT found on %s" % (string, file)]

    file.close()