#! /usr/bin/env python
import sys
import ownet
if len(sys.argv) != 3:
print 'temperatures.py server port'
sys.exit(1)
r = ownet.Sensor('/', server=sys.argv[1], port=int(sys.argv[2]))
e = r.entryList()
s = r.sensorList()
print 'r:', r
print 'r.entryList():', e
print 'r.sensorList():', s
for x in r.sensors():
if hasattr(x, 'temperature'):
print x, x.temperature
def OwCallback(a):
context = a
# polling timestamp
utime = int(time.mktime(time.gmtime()))
stime = int(time.mktime(time.localtime()))
# slave 0x00 register 0x03 (HR)
register = 0x03
slave_id = 0x00
builder = PayloadBuilder(endian=config.endian)
owdata = {}
# owdata persistency (load)
if os.path.isfile(config.owstore):
try:
owfile = open(config.owstore, 'rb')
owdata = pickle.load(owfile)
owfile.close()
except OSError:
logger.warning("Cannot open %s for reading." % config.owstore)
# init ownet configuration
ownet.init('%s:%d' % (config.owserver, config.owport))
# try to open ownet server
try:
ow = ownet.Sensor(config.owpath)
owread = True
except (socket.gaierror, socket.error):
logger.warning("Cannot connect owserver %s:%d." %
(config.owserver, config.owport))
owread = False
# if connected, read known sensors and update owdata
if owread:
try:
for sensor in ow.sensors():
if (hasattr(sensor, 'id') & hasattr(sensor, 'temperature')):
owdata[sensor.id] = [sensor.temperature, stime]
if (hasattr(sensor, 'id') & hasattr(sensor, 'humidity')):
owdata[sensor.id] = [sensor.humidity, stime]
except (socket.gaierror, socket.error, OverflowError):
pass
# deinit ownet
ownet.finish()
# update RRDs
if owread:
rrdupdate(owdata)
# owdata validation
if '' in owdata: del owdata['']
for sensor in owdata:
last = owdata[sensor][1]
if ((stime - last) > config.owhold) or owdata[sensor][0] == '':
owdata[sensor][0] = config.owfail
logger.warning(
"Cannot read 1 wire sensor %s from owserver %s:%d." %
(sensor, config.owserver, config.owport))
if not owread:
logger.warning(
"Cannot read 1 wire sensor %s from owserver %s:%d." %
(sensor, config.owserver, config.owport))
# owdata persistency (save)
if owread:
try:
owfile = open(config.owstore, 'wb')
pickle.dump(owdata, owfile)
owfile.close()
except OSError:
logger.warning("Cannot open %s for writing." % config.owstore)
# reset holding registers with owfail value
devices = config.getDevices(bus='onewire',
types=['Temperature', 'Humidity'])
for sensor in devices:
try:
id = sensor.keys()[0]
device = config.getDevice(id)
mbaddr = int(device.values()[0]['register'])
builder.reset()
builder.add_32bit_float(config.owfail)
context[slave_id].setValues(register, mbaddr, builder.values())
except AttributeError:
pass
# update holding registers with owdata
for address in owdata:
try:
device = config.getDevice(address=address)
mbaddr = int(device.values()[0]['register'])
data = owdata[address][0]
builder.reset()
builder.add_32bit_float(data)
context[slave_id].setValues(register, mbaddr, builder.values())
except AttributeError:
pass
dest='field',
help='sensor field to be used for monitoring.',
default='temperature')
options, args = parser.parse_args()
if len(args) != 3:
print 'OW ' + nagios.unknown[1] + ' - ' + 'missing command line arguments'
parser.print_help()
sys.exit(nagios.unknown[0])
server = args[0]
port = int(args[1])
path = args[2]
try:
s = ownet.Sensor(path, server=server, port=port)
except ownet.exUnknownSensor, ex:
print 'OW ' + nagios.unknown[1] + ' - unknown sensor ' + str(ex)
sys.exit(nagios.unknown[0])
except socket.error, ex:
print 'OW ' + nagios.unknown[1] + ' - communication error ' + str(ex)
sys.exit(nagios.unknown[0])
if options.verbose == 1:
print s
elif options.verbose > 1:
print s
print 'entryList:', s.entryList()
print 'sensorList:', s.sensorList()
if not hasattr(s, options.field):
def PollOwServer(self):
#Init connection.
self.root = ownet.Sensor("/", self.owserver, self.owport)
#Create a list which keeps track of when sensors was read.
self.LastChecked = self.CheckForNewSensors()
#Init alarm path
self.alarm = ownet.Sensor("/alarm", self.owserver, self.owport)
#Check all sensors.
self.CheckSensors(self.LastChecked.keys())
now = time.time()
while (True):
#Update the LastChecked list with added or removed sensors.
self.LastChecked = self.CheckForNewSensors(self.LastChecked)
#Do some iterations then check for new sensors.
for f in range(0, 30):
#Sleep some to not overload the system with requests.
time.sleep(0.1)
#Time the loop
lasttime = now
now = time.time()
self.cycletime = now - lasttime
#Check if there is alarms and check them.
self.alarmlist = self.GetAlarmList()
for sensor in self.alarmlist:
sensor.alarm = now
self.CheckSensors(self.alarmlist, False)
#Update old values and non alarm sensors. Check one each iteration.
#Update the LastChecked list with added or removed sensors.
self.LastChecked = self.CheckForNewSensors(self.LastChecked)
#Try to find the oldest one.
try:
(sensor, checked) = self.GetOldestUpdate()[0]
except IndexError:
continue
#Avoid updating sensors more than once each second.
if (now - checked) < 1.0:
continue
#Check the sensor.
self.CheckSensors([sensor])
self.LastCycled = sensor
#Debug print.
if f % 1 == 0:
self.PrintLastCheckedTimes()
return