def __init__(self, config):
self.mqtt_client = mosquitto.Mosquitto()
self.config = config
self.live_mode = False
self.live_queue = Queue.Queue(maxsize=int(
self.config.get('queue_size', self.DEFAULT_QUEUE_SIZE)))
self._ensure_config_var(self.config, 'server_host')
self._ensure_config_var(self.config, 'server_port')
self._ensure_config_var(self.config, 'channels')
self.scada_client_id = self.config['client_id']
self.last_success_timestamp = 0
self.last_success_uid = -1
self.last_success_item_fname = self.config.get(
'last_success_file', '/var/lib/sensor-tools/last_success_item.dat')
self.load_last_success_item()
self.channel_map = {}
for channel_id, channel in self.config['channels'].iteritems():
device_id, control_id = channel
self.channel_map[(str(device_id),
str(control_id))] = int(channel_id)
self.scada_conn = TServerConnection(
self.config['server_host'],
self.config['server_port'],
self.config.get('tcp_timeout', self.DEFAULT_TCP_TIMEOUT),
saving_interval=self.config.get('saving_interval_prop'))
if self.config.get('mqtt_username'):
self.mqtt_client.username_pw_set(
self.config['mqtt_username'],
self.config.get('mqtt_password', ''))
self.rpc_client = TMQTTRPCClient(self.mqtt_client)
self.rpc_timeout = float(
self.config.get('rpc_timeout', self.DEFAULT_RPC_TIMEOUT))
self.mqtt_client.on_message = self.on_mqtt_message
self.mqtt_client.on_connect = self.on_mqtt_connect
self.mqtt_client.connect(self.config.get('mqtt_host', 'localhost'),
self.config.get('mqtt_port', 1883))
self.mqtt_client.loop_start()
def main():
parser = argparse.ArgumentParser(description='Sample RPC client', add_help=False)
parser.add_argument('-h', '--host', dest='host', type=str,
help='MQTT host', default='localhost')
parser.add_argument('-u', '--username', dest='username', type=str,
help='MQTT username', default='')
parser.add_argument('-P', '--password', dest='password', type=str,
help='MQTT password', default='')
parser.add_argument('-p', '--port', dest='port', type=int,
help='MQTT port', default='1883')
args = parser.parse_args()
client = mosquitto.Mosquitto()
if args.username:
client.username_pw_set(args.username, args.password)
client.connect(args.host, args.port)
client.loop_start()
rpc_client = TMQTTRPCClient(client)
client.on_message = rpc_client.on_mqtt_message
#~ resp = rpc_client.call('Driver', 'main', 'foobar', {'foo':'foo', 'bar':'bar'})
for i in xrange(10):
resp = rpc_client.call('db_logger', 'history', 'get_values', {
'channels': [
[ 'wb-w1', '00-1234566789' ],
[ 'wb-w1', '00' ],
[ 'wb-adc', 'Vin'],
],
'timestamp' : {
'gt': 1434728034
},
'limit' : 60
}, 10)
print "got result!"
pprint.pprint(resp)
time.sleep(5)
def main():
parser = argparse.ArgumentParser(description='wb-mqtt-db Console Client', add_help=False, formatter_class=argparse.ArgumentDefaultsHelpFormatter)
parser.add_argument('--help', action='help',
help='show this help message and exit')
parser.add_argument('-h', '--host', dest='host', type=str,
help='MQTT host', default='localhost')
parser.add_argument('-u', '--username', dest='username', type=str,
help='MQTT username', default='')
parser.add_argument('-P', '--password', dest='password', type=str,
help='MQTT password', default='')
parser.add_argument('-p', '--port', dest='port', type=int,
help='MQTT port', default='1883')
parser.add_argument('--from', dest='date_from', type=str,
help='start date', default=None)
parser.add_argument('--to', dest='date_to', type=str,
help='end date', default=None)
parser.add_argument('--time-format', dest='time_format', type=str,
help='''strftime-style format string for timestamp formating. Use "%%s.%%f" for UNIX timestamp''', default="%Y-%m-%d %H:%M:%S.%f")
parser.add_argument('--limit', dest='limit', type=int, help='The maximum number of data points to request',
default=10000)
i_group = parser.add_mutually_exclusive_group()
i_group.add_argument('--interval', dest='min_interval', type=int,
help='Min interval between data points (ms)', default=None)
i_group.add_argument('-a', '--auto-interval', dest='auto_interval', action="store_true",
help='Automatically estimate the interval between data points based on "limit", "from" and "start"')
parser.add_argument('--decimal-places', dest='decimal_places', type=int, help='Number of decimal places in value')
parser.add_argument('-d', '--delimiter', dest='delimiter', type=str, help='CSV field separator', default='\t')
parser.add_argument('-o', '--output-fname', dest='output_fname', type=str, help='Write result to file. "-" means stdout', default='-')
parser.add_argument("--timeout", dest="timeout", type=int, help="Request timeout (in seconds)")
parser.add_argument('channels', metavar='DEVICE/CONTROL', type=str, nargs='+',
help='List of channels to request')
args = parser.parse_args()
if args.date_from:
date_from = dateutil.parser.parse(args.date_from)
else:
date_from = None
if args.date_to:
date_to = dateutil.parser.parse(args.date_to)
else:
date_to = datetime.datetime.now()
if args.min_interval:
min_interval = args.min_interval
else:
min_interval = None
if args.auto_interval:
if args.date_from is None:
parser.error("--from argument should be present when using -a/--auto-interval")
time_interval = date_to - date_from
if time_interval < datetime.timedelta(0):
parser.error("--from is greater than --to (or in future)")
min_interval = (time_interval / args.limit).total_seconds() * 1000
client = mosquitto.Mosquitto()
if args.username:
client.username_pw_set(args.username, args.password)
client.connect(args.host, args.port)
client.loop_start()
rpc_client = TMQTTRPCClient(client)
client.on_message = rpc_client.on_mqtt_message
channels = [channel.split('/', 2) for channel in args.channels]
fieldnames = ['channel', 'time', 'average', 'min', 'max']
if args.output_fname == '-':
csvfile = sys.stdout
else:
csvfile = open(args.output_fname, 'wb')
try:
writer = csv.DictWriter(csvfile, fieldnames=fieldnames,delimiter=args.delimiter)
for i, channel in enumerate(channels):
rpc_params = {
'channels': [channel,],
'timestamp' : {
},
'limit' : args.limit,
'ver' : 1,
}
if args.date_from:
rpc_params['timestamp']['gt'] = int(time.mktime(date_from.timetuple()))
if args.date_to:
rpc_params['timestamp']['lt'] = time.mktime(date_to.timetuple())
if min_interval:
rpc_params['min_interval'] = min_interval
if args.timeout:
rpc_params["request_timeout"] = args.timeout
mqtt_timeout = args.timeout + 5
else:
mqtt_timeout = 30
try:
resp = rpc_client.call('db_logger', 'history', 'get_values', rpc_params, timeout=mqtt_timeout)
except MQTTRPCError as err:
if err.code == -32100:
print("ERROR: Backend wb-mqtt-db failed to process request in time. Consider increasing timeout (--timeout).", file=sys.stderr)
return
raise err
if i == 0:
writer.writeheader()
# pprint.pprint(resp)
# print(len(resp['values']))
for row in resp['values']:
csvrow = dict(
channel = ("%s/%s" % tuple(channel)),
time = datetime.datetime.fromtimestamp(row.get('t') or row.get('timestamp')).strftime(args.time_format),
average = format_value(row.get('v') or row.get('value'), args.decimal_places)
)
if 'min' in row:
csvrow['min'] = format_value(row['min'], args.decimal_places)
if 'max' in row:
csvrow['max'] = format_value(row['max'], args.decimal_places)
writer.writerow(csvrow)
finally:
csvfile.close()
