import redis


def __run__(params):
    try:
        host      = params.get("host", "localhost")
        port      = int(params.get("port", "6379"))
        db        = int(params.get("db", "0"))
        passwd    = params.get("passwd")
        scard     = params.get("scard")
        minworkers= int(params.get("minworkers", "5"))
        maxworkers= int(params.get("maxworkers", "20"))
    except Exception, e:
        return [2, "CRITICAL - Error: %s" % repr(e)]

    try:
        r = redis.Redis(host=host, port=port, db=db, password=passwd)
        rsq_workers = r.scard("%s" % scard)
    except Exception, e:
        return [2, "CRITICAL - Error: %s" % repr(e)]

    if rsq_workers < minworkers:
        return [2, "CRITICAL - Resque has only %s of %s workers" %(rsq_workers, minworkers)]
    if rsq_workers > maxworkers:
        return [1, "WARNING - Resque has %s of %s workers" %(rsq_workers, maxworkers)]
    return [0, "OK - Resque has %s workers" % rsq_workers]