import subprocess
import re
import os

def perfdata(metrics):
    out = []
    for k in metrics.keys():
        out.append('%s=%s' % (k.lower(), metrics[k]))
    return '|'.join(out)

def __run__(params):
    if not os.path.exists('/usr/lib/check_mk_agent/need_sudo/check_lfs'):
        return [2, 'check_lfs is not installed please install it']
    try:
        p = subprocess.Popen(['/usr/bin/sudo', 
                '/usr/lib/check_mk_agent/need_sudo/check_lfs'], 
                stdout=subprocess.PIPE)
    except Exception as e:
        return [2, 'CRITICAL - Problems executing check_lfs %s' % repr(e)]
    threshold = float(params.get('threshold'))
    out = p.stdout.read().split('\n')
    milli = re.compile('.*? (.*?): milliseconds (.*)')
    metrics = {}
    for l in out:
        if milli.match(l):
            if not (l.startswith("/storage/befs") or l.startswith("/storage/cbfs")):
                metrics[milli.match(l).group(1)] = float(milli.match(l).group(2))
    if metrics['Roundtrip'] < threshold:
        return [0, 'OK Roundtrip time' , perfdata(metrics)]
    else:
        return [2, 'CRITICAL - Roundtrip time is %s' % 
                metrics['Roundtrip'], perfdata(metrics)]