def __connect_to_devices(self): # Function for opening connection and connecting to devices
for device in self.devices:
try: # Start error handler
connection_start = time.time()
if self.devices[device].get("serial") is None \
or self.devices[device]["serial"] is None \
or not self.devices[device]["serial"].isOpen(): # Connect only if serial not available earlier or it is closed.
self.devices[device]["serial"] = None
while self.devices[device]["serial"] is None or not self.devices[device]["serial"].isOpen(): # Try connect
'''connection to serial port with parameters from configuration file or default'''
self.devices[device]["serial"] = serial.Serial(
port=self.__config.get('port', '/dev/ttyUSB0'),
baudrate=self.__config.get('baudrate', 9600),
bytesize=self.__config.get('bytesize', serial.EIGHTBITS),
parity=self.__config.get('parity', serial.PARITY_NONE),
stopbits=self.__config.get('stopbits', serial.STOPBITS_ONE),
timeout=self.__config.get('timeout', 1),
xonxoff=self.__config.get('xonxoff', False),
rtscts=self.__config.get('rtscts', False),
write_timeout=self.__config.get('write_timeout', None),
dsrdtr=self.__config.get('dsrdtr', False),
inter_byte_timeout=self.__config.get('inter_byte_timeout', None),
exclusive=self.__config.get('exclusive', None)
)
time.sleep(.1)
if time.time() - connection_start > 10: # Break connection try if it setting up for 10 seconds
log.error("Connection refused per timeout for device %s", self.devices[device]["device_config"].get("name"))
break
except serial.serialutil.SerialException:
log.error("Port %s for device %s - not found", self.__config.get('port', '/dev/ttyUSB0'), device)
time.sleep(10)
except Exception as e:
log.exception(e)
time.sleep(10)
else: # if no exception handled - add device and change connection state
self.__gateway.add_device(self.devices[device]["device_config"]["name"], {"connector": self}, self.devices[device]["device_config"]["type"])
self.connected = True
def __run_server(self):
self.endpoints = self.load_endpoints()
self._app = web.Application(
debug=self.__config.get('debugMode', False))
ssl_context = None
cert = None
key = None
if self.__config.get('SSL', False):
if not self.__config.get('security'):
if not os.path.exists('domain_srv.crt'):
from thingsboard_gateway.connectors.rest.ssl_generator import SSLGenerator
n = SSLGenerator(self.__config['host'])
n.generate_certificate()
cert = 'domain_srv.crt'
key = 'domain_srv.key'
else:
try:
cert = self.__config['security']['cert']
key = self.__config['security']['key']
except KeyError as e:
log.exception(e)
log.error('Provide certificate and key path!')
ssl_context = ssl.create_default_context(ssl.Purpose.CLIENT_AUTH)
ssl_context.load_cert_chain(cert, key)
self.load_handlers()
web.run_app(self._app,
host=self.__config['host'],
port=self.__config['port'],
handle_signals=False,
ssl_context=ssl_context,
reuse_port=self.__config['port'],
reuse_address=self.__config['host'])
def server_side_rpc_handler(self, server_rpc_request):
try:
if server_rpc_request.get(DEVICE_SECTION_PARAMETER) is not None:
log.debug("Modbus connector received rpc request for %s with server_rpc_request: %s",
server_rpc_request[DEVICE_SECTION_PARAMETER],
server_rpc_request)
device = tuple(
filter(
lambda slave: slave.name == server_rpc_request[DEVICE_SECTION_PARAMETER], self.__slaves
)
)[0]
if isinstance(device.config[RPC_SECTION], dict):
rpc_command_config = device.config[RPC_SECTION].get(
server_rpc_request[DATA_PARAMETER][RPC_METHOD_PARAMETER])
if rpc_command_config is not None:
self.__process_request(server_rpc_request, rpc_command_config)
elif isinstance(device.config[RPC_SECTION], list):
for rpc_command_config in device.config[RPC_SECTION]:
if rpc_command_config[TAG_PARAMETER] == server_rpc_request[DATA_PARAMETER][
RPC_METHOD_PARAMETER]:
self.__process_request(server_rpc_request, rpc_command_config)
break
else:
log.error("Received rpc request, but method %s not found in config for %s.",
server_rpc_request[DATA_PARAMETER].get(RPC_METHOD_PARAMETER),
self.get_name())
self.__gateway.send_rpc_reply(server_rpc_request[DEVICE_SECTION_PARAMETER],
server_rpc_request[DATA_PARAMETER][RPC_ID_PARAMETER],
{server_rpc_request[DATA_PARAMETER][
RPC_METHOD_PARAMETER]: "METHOD NOT FOUND!"})
else:
log.debug("Received RPC to connector: %r", server_rpc_request)
except Exception as e:
log.exception(e)
def __scan_nodes_from_config(self):
try:
if self.__interest_nodes:
for device_object in self.__interest_nodes:
for current_device in device_object:
try:
device_configuration = device_object[
current_device]
devices_info_array = self.__search_general_info(
device_configuration)
for device_info in devices_info_array:
if device_info is not None and device_info.get(
"deviceNode") is not None:
self.__search_nodes_and_subscribe(
device_info)
self.__save_methods(device_info)
self.__search_attribute_update_variables(
device_info)
else:
log.error(
"Device node is None, please check your configuration."
)
log.debug(
"Current device node is: %s",
str(
device_configuration.get(
"deviceNodePattern")))
break
except BrokenPipeError:
log.debug("Broken Pipe. Connection lost.")
except OSError:
log.debug("Stop on scanning.")
except Exception as e:
log.exception(e)
log.debug(self.__interest_nodes)
except Exception as e:
log.exception(e)
def __init__(self, config):
super().__init__()
self.loop = None
self.stopped = False
self.name = config['name']
self.device_type = config.get('deviceType', 'default')
self.timeout = config.get('timeout', 10000) / 1000
self.show_map = config.get('showMap', False)
self.__connector_type = config['connector_type']
self.daemon = True
try:
self.mac_address = self.validate_mac_address(config['MACAddress'])
self.client = BleakClient(self.mac_address)
except ValueError as e:
self.client = None
self.stopped = True
log.error(e)
self.poll_period = config.get('pollPeriod', 5000) / 1000
self.config = {
'extension': config.get('extension', DEFAULT_CONVERTER_CLASS_NAME),
'telemetry': config.get('telemetry', []),
'attributes': config.get('attributes', []),
'attributeUpdates': config.get('attributeUpdates', []),
'serverSideRpc': config.get('serverSideRpc', [])
}
self.callback = config['callback']
self.last_polled_time = 0
self.notifying_chars = []
self.__converter = None
self.__load_converter()
self.start()
async def __process_self(self):
not_converted_data = {'telemetry': [], 'attributes': []}
for section in ('telemetry', 'attributes'):
for item in self.config[section]:
char_id = item['characteristicUUID']
if item['method'] == 'read':
try:
data = await self.client.read_gatt_char(char_id)
not_converted_data[section].append({
'data': data,
**item
})
except BleakError as e:
log.error(e)
elif item[
'method'] == 'notify' and char_id not in self.notifying_chars:
try:
self.__set_char_handle(item, char_id)
self.notifying_chars.append(char_id)
await self.notify(char_id)
except BleakError:
log.error(e)
if len(not_converted_data['telemetry']) > 0 or len(
not_converted_data['attributes']) > 0:
data_for_converter = {
'deviceName': self.name,
'deviceType': self.device_type,
'converter': self.__converter,
'config': {
'attributes': self.config['attributes'],
'telemetry': self.config['telemetry']
},
'data': not_converted_data
}
self.callback(data_for_converter)
def server_side_rpc_handler(self, content):
try:
if content.get("device") is not None:
log.debug(
"Modbus connector received rpc request for %s with content: %s",
content["device"], content)
if isinstance(
self.__devices[content["device"]]["config"]["rpc"],
dict):
rpc_command_config = self.__devices[
content["device"]]["config"]["rpc"].get(
content["data"]["method"])
if rpc_command_config is not None:
self.__process_rpc_request(content, rpc_command_config)
elif isinstance(
self.__devices[content["device"]]["config"]["rpc"],
list):
for rpc_command_config in self.__devices[
content["device"]]["config"]["rpc"]:
if rpc_command_config["tag"] == content["data"][
"method"]:
self.__process_rpc_request(content,
rpc_command_config)
break
else:
log.error(
"Received rpc request, but method %s not found in config for %s.",
content["data"].get("method"), self.get_name())
self.__gateway.send_rpc_reply(
content["device"], content["data"]["id"],
{content["data"]["method"]: "METHOD NOT FOUND!"})
else:
log.debug("Received RPC to connector: %r", content)
except Exception as e:
log.exception(e)
def send_data_to_bus(self,
node_id,
data,
is_extended_id=False,
is_fd=False,
bitrate_switch=False,
data_check=False):
try:
self.__bus.send(
Message(arbitration_id=node_id,
is_extended_id=is_extended_id,
is_fd=is_fd,
bitrate_switch=bitrate_switch,
data=data,
check=data_check))
return True
except (ValueError, TypeError) as e:
log.error("[%s] Wrong CAN message data: %s", self.get_name(),
str(e))
except CanError as e:
log.error("[%s] Failed to send CAN message: %s", self.get_name(),
str(e))
self.__on_bus_error(e)
return False
def load_handlers(self):
data_handlers = {
"basic": BasicDataHandler,
"anonymous": AnonymousDataHandler,
}
handlers = []
for mapping in self.__config.get("mapping"):
try:
security_type = "anonymous" if mapping.get(
"security") is None else mapping["security"]["type"].lower(
)
if security_type != "anonymous":
Users.add_user(mapping['endpoint'],
mapping['security']['username'],
mapping['security']['password'])
for http_method in mapping['HTTPMethods']:
handler = data_handlers[security_type](
self.collect_statistic_and_send, self.get_name(),
self.endpoints[mapping["endpoint"]])
handlers.append(
web.route(http_method, mapping['endpoint'], handler))
except Exception as e:
log.error("Error on creating handlers - %s", str(e))
self._app.add_routes(handlers)
def __general_cb(self, iocb, callback_params=None, value=None):
try:
if callback_params is None:
callback_params = self.requests_in_progress[iocb]
if iocb.ioResponse:
apdu = iocb.ioResponse
if isinstance(apdu, SimpleAckPDU):
log.debug("Write to %s - successfully.", str(apdu.pduSource))
else:
log.debug("Received response: %r", apdu)
elif iocb.ioError:
log.exception(iocb.ioError)
else:
log.error("There are no data in response and no errors.")
if isinstance(callback_params, dict) and callback_params.get("callback"):
try:
callback_params["callback"](iocb, callback_params)
except TypeError:
callback_params["callback"](iocb)
except Exception as e:
log.exception("During processing callback, exception has been raised:")
log.exception(e)
if self.requests_in_progress.get(iocb) is not None:
del self.requests_in_progress[iocb]
def server_side_rpc_handler(self,
config,
content,
callback=None,
errback=None):
rpc_command_config = config["config"]["rpc"].get(
content["data"].get("method"))
if rpc_command_config.get('bit') is not None:
rpc_command_config["functionCode"] = 6
rpc_command_config["unitId"] = config["config"]["unitId"]
if rpc_command_config is not None:
rpc_command_config["payload"] = self._devices[
content["device"]]["downlink_converter"].convert(
rpc_command_config, content)
return self._function_to_device(rpc_command_config,
rpc_command_config['unit_id'],
callback=callback,
errback=errback)
else:
log.error(
"Received rpc request, but method %s not found in config for %s.",
content["data"].get("method"), config["config"]['deviceName'])
return None
def server_side_rpc_handler(self, content):
log.debug(
"Modbus connector received rpc request for %s with content: %s",
self.get_name(), content)
rpc_command_config = self.__devices[
content["device"]]["config"]["rpc"].get(
content["data"].get("method"))
if rpc_command_config.get('bit') is not None:
rpc_command_config["functionCode"] = 6
rpc_command_config["unitId"] = self.__devices[
content["device"]]["config"]["unitId"]
if rpc_command_config is not None:
rpc_command_config["payload"] = self.__devices[
content["device"]]["downlink_converter"].convert(
rpc_command_config, content)
response = None
try:
response = self.__function_to_device(
rpc_command_config, rpc_command_config["unitId"])
except Exception as e:
log.exception(e)
if response is not None:
response = isinstance(
response,
(WriteMultipleRegistersResponse,
WriteMultipleCoilsResponse, WriteSingleCoilResponse,
WriteSingleRegisterResponse))
log.debug(response)
self.__gateway.send_rpc_reply(
content["device"], content["data"]["id"],
{content["data"]["method"]: response})
else:
log.error(
"Received rpc request, but method %s not found in config for %s.",
content["data"].get("method"), self.get_name())
def load_converters(self):
devices_config = self.__config.get('devices')
try:
if devices_config is not None:
print("Devices config part loaded ... ")
for device_config in devices_config:
if device_config.get('converter') is not None:
converter = TBUtility.check_and_import(
self.__connector_type, device_config['converter'])
self.devices[device_config['name']] = {
'converter': converter(device_config),
'device_config': device_config
}
else:
log.error(
'Converter configuration for the custom connector %s -- not found, please check your configuration file.',
self.get_name())
else:
log.error(
'Section "devices" in the configuration not found. A custom connector %s has being stopped.',
self.get_name())
self.close()
except Exception as e:
log.exception(e)
def __search_general_info(self, device):
result = {"deviceName": None, "deviceType": None, "deviceNode": None}
result["deviceNode"] = self.__search_node(
self.__opcua_nodes["root"],
TBUtility.get_value(device["deviceNodePattern"], get_tag=True))
if result["deviceNode"] is not None:
name_pattern_config = device["deviceNamePattern"]
name_expression = TBUtility.get_value(name_pattern_config,
get_tag=True)
if "${" in name_pattern_config and "}" in name_pattern_config:
device_name_node = self.__search_node(
self.__opcua_nodes["root"], name_expression)
if device_name_node is not None:
device_name_from_node = device_name_node.get_value()
full_device_name = name_pattern_config.replace(
"${" + name_expression + "}",
device_name_from_node).replace(name_expression,
device_name_from_node)
else:
log.error("Device name node not found with expression: %s",
name_expression)
return
else:
full_device_name = name_expression
result["deviceName"] = full_device_name
log.debug("Device name: %s", full_device_name)
if device.get("deviceTypePattern"):
device_type_expression = TBUtility.get_value(
device["deviceTypePattern"], get_tag=True)
if "${" in device_type_expression and "}" in device_type_expression:
device_type_node = self.__search_node(
self.__opcua_nodes["root"], device_type_expression)
if device_type_node is not None:
device_type = device_type_node.get_value()
full_device_type = device_type_expression.replace(
"${" + device_type_expression + "}",
device_type).replace(device_type_expression,
device_type)
else:
log.error(
"Device type node not found with expression: %s",
device_type_expression)
full_device_type = "default"
else:
full_device_type = device_type_expression
result["deviceType"] = full_device_type
log.debug("Device type: %s", full_device_type)
else:
result["deviceType"] = "default"
return result
else:
log.error(
"Device node not found with expression: %s",
TBUtility.get_value(device["deviceNodePattern"], get_tag=True))
def __fill_interest_devices(self):
if self.__config.get('devices') is None:
log.error('Devices not found in configuration file. BLE Connector stopped.')
self._connected = False
return
for interest_device in self.__config.get('devices'):
keys_in_config = ['attributes', 'telemetry']
if interest_device.get('MACAddress') is not None:
default_converter = BytesBLEUplinkConverter(interest_device)
interest_uuid = {}
for key_type in keys_in_config:
for type_section in interest_device.get(key_type):
if type_section.get("characteristicUUID") is not None:
converter = None
if type_section.get('converter') is not None:
try:
module = TBUtility.check_and_import(self.__connector_type, type_section['converter'])
if module is not None:
log.debug('Custom converter for device %s - found!', interest_device['MACAddress'])
converter = module(interest_device)
else:
log.error("\n\nCannot find extension module for device %s .\nPlease check your configuration.\n", interest_device['MACAddress'])
except Exception as e:
log.exception(e)
else:
converter = default_converter
if converter is not None:
if interest_uuid.get(type_section["characteristicUUID"].upper()) is None:
interest_uuid[type_section["characteristicUUID"].upper()] = [{'section_config': type_section,
'type': key_type,
'converter': converter}]
else:
interest_uuid[type_section["characteristicUUID"].upper()].append({'section_config': type_section,
'type': key_type,
'converter': converter})
else:
log.error("No characteristicUUID found in configuration section for %s:\n%s\n", key_type, pformat(type_section))
if self.__devices_around.get(interest_device['MACAddress'].upper()) is None:
self.__devices_around[interest_device['MACAddress'].upper()] = {}
self.__devices_around[interest_device['MACAddress'].upper()]['device_config'] = interest_device
self.__devices_around[interest_device['MACAddress'].upper()]['interest_uuid'] = interest_uuid
else:
log.error("Device address not found, please check your settings.")
def __process_rpc_request(self, content, rpc_command_config):
if rpc_command_config is not None:
log.debug(rpc_command_config)
address = rpc_command_config["address"]
response = None
try:
if content["data"].get("params") is not None:
params = content["data"]["params"]
if not isinstance(params, bool):
log.error(
"Received rpc request, but params is not bool for method %s!",
content["data"].get("method"))
self.__gateway.send_rpc_reply(
content["device"], content["data"]["id"], {
content["data"]["method"]:
"Error, params is not bool!"
})
return
inversion = rpc_command_config["inversion"]
result = (params != inversion) # params XOR inversion
f = open("/sys/class/gpio/gpio" + str(address) + "/value",
"w")
if result:
ret = f.write("1")
else:
ret = f.write("0")
f.close()
response = {"success": True}
else:
log.error(
"Received rpc request, but no params found for method %s!",
content["data"].get("method"))
self.__gateway.send_rpc_reply(
content["device"], content["data"]["id"],
{content["data"]["method"]: "Error, no params found!"})
return
except Exception as e:
log.exception(e)
response = e
if content.get("id") or (content.get("data") is not None
and content["data"].get("id")):
if isinstance(response, Exception):
log.error(
"Received rpc request, but exception happened for method %s!",
content["data"].get("method"))
self.__gateway.send_rpc_reply(
content["device"], content["data"]["id"],
{content["data"]["method"]: str(response)})
else:
self.__gateway.send_rpc_reply(content["device"],
content["data"]["id"],
response)
def __search_general_info(self, device):
result = []
match_devices = []
self.__search_node(self.__opcua_nodes["root"], TBUtility.get_value(device["deviceNodePattern"], get_tag=True), result=match_devices)
for device_node in match_devices:
if device_node is not None:
result_device_dict = {"deviceName": None, "deviceType": None, "deviceNode": device_node, "configuration": deepcopy(device)}
name_pattern_config = device["deviceNamePattern"]
name_expression = TBUtility.get_value(name_pattern_config, get_tag=True)
if "${" in name_pattern_config and "}" in name_pattern_config:
log.debug("Looking for device name")
name_path = self._check_path(name_expression, device_node)
device_name_node = []
self.__search_node(device_node, name_path, result=device_name_node)
device_name_node = device_name_node[0]
if device_name_node is not None:
device_name_from_node = device_name_node.get_value()
full_device_name = name_pattern_config.replace("${" + name_expression + "}", str(device_name_from_node)).replace(
name_expression, str(device_name_from_node))
else:
log.error("Device name node not found with expression: %s", name_expression)
return None
else:
full_device_name = name_expression
result_device_dict["deviceName"] = full_device_name
log.debug("Device name: %s", full_device_name)
if device.get("deviceTypePattern"):
device_type_expression = TBUtility.get_value(device["deviceTypePattern"],
get_tag=True)
if "${" in device_type_expression and "}" in device_type_expression:
type_path = self._check_path(device_type_expression, device_node)
device_type_node = []
self.__search_node(device_node, type_path, result=device_type_node)
device_type_node = device_type_node[0]
if device_type_node is not None:
device_type = device_type_node.get_value()
full_device_type = device_type_expression.replace("${" + device_type_expression + "}",
device_type).replace(device_type_expression,
device_type)
else:
log.error("Device type node not found with expression: %s", device_type_expression)
full_device_type = "default"
else:
full_device_type = device_type_expression
result_device_dict["deviceType"] = full_device_type
log.debug("Device type: %s", full_device_type)
else:
result_device_dict["deviceType"] = "default"
result.append(result_device_dict)
else:
log.error("Device node not found with expression: %s", TBUtility.get_value(device["deviceNodePattern"], get_tag=True))
return result
def __service_processing(self, device, characteristic_processing_conf):
for service in self.__devices_around[device]['services']:
characteristic_uuid_from_config = characteristic_processing_conf.get('characteristicUUID')
if characteristic_uuid_from_config is None:
log.error('Characteristic not found in config: %s', pformat(characteristic_processing_conf))
return None
if self.__devices_around[device]['services'][service].get(characteristic_uuid_from_config) is None:
continue
characteristic = self.__devices_around[device]['services'][service][characteristic_uuid_from_config][
'characteristic']
self.__check_and_reconnect(device)
data = None
if characteristic_processing_conf.get('method', '_').upper().split()[0] == "READ":
if characteristic.supportsRead():
self.__check_and_reconnect(device)
data = characteristic.read()
log.debug(data)
else:
log.error('This characteristic doesn\'t support "READ" method.')
if characteristic_processing_conf.get('method', '_').upper().split()[0] == "NOTIFY":
self.__check_and_reconnect(device)
descriptor = characteristic.getDescriptors(forUUID=0x2902)[0]
handle = descriptor.handle
if self.__notify_delegators.get(device) is None:
self.__notify_delegators[device] = {}
if self.__notify_delegators[device].get(handle) is None:
self.__notify_delegators[device][handle] = {'function': self.__notify_handler,
'args': (self.__devices_around[device],
handle,
self.__notify_delegators[device].get(handle)),
'delegate': None
}
self.__notify_delegators[device][handle]['delegate'] = self.__notify_delegators[device][handle][
'function'](*self.__notify_delegators[device][handle]['args'])
data = self.__notify_delegators[device][handle]['delegate'].data
else:
self.__notify_delegators[device][handle]['args'] = (self.__devices_around[device],
handle,
self.__notify_delegators[device][handle]['delegate'])
self.__notify_delegators[device][handle]['delegate'] = self.__notify_delegators[device][handle][
'function'](*self.__notify_delegators[device][handle]['args'])
data = self.__notify_delegators[device][handle]['delegate'].data
if data is None:
log.error('Cannot process characteristic: %s with config:\n%s', str(characteristic.uuid).upper(),
pformat(characteristic_processing_conf))
else:
log.debug('data: %s', data)
return data
def run(self):
while not self.__stopped:
# Initialization phase
if not self.is_connected():
while not self.__stopped and \
not self.__init_connection() and \
self.__config["connection"].get("reconnect", self.DEFAULT_RECONNECT_STATE):
reconnect_period = self.__config["connection"].get(
"reconnectPeriod", self.DEFAULT_RECONNECT_PERIOD)
log.info("[%s] Will reconnect to database in %d second(s)",
self.get_name(), reconnect_period)
sleep(reconnect_period)
if not self.is_connected():
log.error(
"[%s] Cannot connect to database so exit from main loop",
self.get_name())
break
if not self.__init_iterator():
log.error(
"[%s] Cannot init database iterator so exit from main loop",
self.get_name())
break
# Polling phase
try:
self.__poll()
if not self.__stopped:
polling_period = self.__config["polling"].get(
"period", self.DEFAULT_POLL_PERIOD)
log.debug(
"[%s] Next polling iteration will be in %d second(s)",
self.get_name(), polling_period)
sleep(polling_period)
except pyodbc.Warning as w:
log.warning("[%s] Warning while polling database: %s",
self.get_name(), str(w))
except pyodbc.Error as e:
log.error("[%s] Error while polling database: %s",
self.get_name(), str(e))
self.__close()
self.__close()
self.__stopped = False
log.info("[%s] Stopped", self.get_name())
def run(self):
while not self.__stopped:
# Initialization phase
if not self.is_connected():
while not self.__stopped and \
not self.__init_connection() and \
self.__config["connection"].get("reconnect", self.DEFAULT_RECONNECT_STATE):
reconnect_period = self.__config["connection"].get("reconnectPeriod", self.DEFAULT_RECONNECT_PERIOD)
log.info("[%s] Will reconnect to database in %d second(s)", self.get_name(), reconnect_period)
sleep(reconnect_period)
if not self.is_connected():
log.error("[%s] Cannot connect to database so exit from main loop", self.get_name())
self.__stopped = True
break
if not self.__init_iterator():
log.error("[%s] Cannot init database iterator so exit from main loop", self.get_name())
break
# Polling phase
try:
self.__poll()
# self.server_side_rpc_handler({"device": "RPC test",
# "data": {
# "id": 777,
# "method": "usp_NoParameters",
# "params": [ 8, True, "Three" ]
# }})
if not self.__stopped:
polling_period = self.__config["polling"].get("period", self.DEFAULT_POLL_PERIOD)
log.debug("[%s] Next polling iteration will be in %d second(s)", self.get_name(), polling_period)
sleep(polling_period)
except pyodbc.Warning as w:
log.warn("[%s] Warning while polling database: %s", self.get_name(), str(w))
except pyodbc.Error as e:
log.error("[%s] Error while polling database: %s", self.get_name(), str(e))
self.__close()
self.__close()
log.info("[%s] Stopped", self.get_name())
def server_side_rpc_handler(self, content):
log.debug(content)
try:
for device in self.__devices_around:
if self.__devices_around[device]['device_config'].get(
'name') == content['device']:
for requests in self.__devices_around[device][
'device_config']["serverSideRpc"]:
for service in self.__devices_around[device][
'services']:
if requests[
'characteristicUUID'] in self.__devices_around[
device]['services'][service]:
characteristic = self.__devices_around[device][
'services'][service][
requests['characteristicUUID']][
'characteristic']
if requests.get(
'methodProcessing'
) and requests['methodProcessing'].upper(
) in characteristic.propertiesToString():
if content['data']['method'] == requests[
'methodRPC']:
response = None
if requests['methodProcessing'].upper(
) == 'WRITE':
try:
self.__check_and_reconnect(
device)
response = characteristic.write(
content['data'].get(
'params',
'').encode('UTF-8'),
requests.get(
'withResponse', False))
except BTLEDisconnectError:
self.__check_and_reconnect(
device)
response = characteristic.write(
content['data'].get(
'params',
'').encode('UTF-8'),
requests.get(
'withResponse', False))
elif requests[
'methodProcessing'].upper(
) == 'READ':
try:
self.__check_and_reconnect(
device)
response = characteristic.read(
)
except BTLEDisconnectError:
self.__check_and_reconnect(
device)
response = characteristic.read(
)
elif requests[
'methodProcessing'].upper(
) == 'NOTIFY':
try:
self.__check_and_reconnect(
device)
delegate = self.__notify_handler(
self.
__devices_around[device],
characteristic.handle)
response = delegate.data
except BTLEDisconnectError:
self.__check_and_reconnect(
device)
delegate = self.__notify_handler(
self.
__devices_around[device],
characteristic.handle)
response = delegate.data
if response is not None:
log.debug(
'Response from device: %s',
response)
if requests['withResponse']:
response = 'success'
self.__gateway.send_rpc_reply(
content['device'],
content['data']['id'],
str(response))
else:
log.error(
'Method for rpc request - not supported by characteristic or not found in the config.\nDevice: %s with data: %s and config: %s',
device, content,
self.__devices_around[device]
['device_config']["serverSideRpc"])
except Exception as e:
log.exception(e)
def __get_services_and_chars(self):
for device in self.__devices_around:
try:
if self.__devices_around.get(
device) is not None and self.__devices_around[
device].get('scanned_device') is not None:
log.debug('Connecting to device: %s', device)
if self.__devices_around[device].get('peripheral') is None:
address_type = self.__devices_around[device][
'device_config'].get('addrType', "public")
peripheral = Peripheral(
self.__devices_around[device]['scanned_device'],
address_type)
self.__devices_around[device][
'peripheral'] = peripheral
else:
peripheral = self.__devices_around[device][
'peripheral']
try:
log.info(peripheral.getState())
except BTLEInternalError:
peripheral.connect(
self.__devices_around[device]['scanned_device'])
try:
services = peripheral.getServices()
except BTLEDisconnectError:
self.__check_and_reconnect(device)
services = peripheral.getServices()
for service in services:
if self.__devices_around[device].get(
'services') is None:
log.debug(
'Building device %s map, it may take a time, please wait...',
device)
self.__devices_around[device]['services'] = {}
service_uuid = str(service.uuid).upper()
if self.__devices_around[device]['services'].get(
service_uuid) is None:
self.__devices_around[device]['services'][
service_uuid] = {}
try:
characteristics = service.getCharacteristics()
except BTLEDisconnectError:
self.__check_and_reconnect(device)
characteristics = service.getCharacteristics()
if self.__config.get('buildDevicesMap', False):
for characteristic in characteristics:
descriptors = []
self.__check_and_reconnect(device)
try:
descriptors = characteristic.getDescriptors(
)
except BTLEDisconnectError:
self.__check_and_reconnect(device)
descriptors = characteristic.getDescriptors(
)
except BTLEGattError as e:
log.debug(e)
except Exception as e:
log.exception(e)
characteristic_uuid = str(
characteristic.uuid).upper()
if self.__devices_around[device][
'services'][service_uuid].get(
characteristic_uuid) is None:
self.__check_and_reconnect(device)
self.__devices_around[device][
'services'][service_uuid][
characteristic_uuid] = {
'characteristic':
characteristic,
'handle':
characteristic.handle,
'descriptors': {}
}
for descriptor in descriptors:
log.debug(descriptor.handle)
log.debug(str(descriptor.uuid))
log.debug(str(descriptor))
self.__devices_around[device][
'services'][service_uuid][
characteristic_uuid][
'descriptors'][
descriptor.
handle] = descriptor
else:
for characteristic in characteristics:
characteristic_uuid = str(
characteristic.uuid).upper()
self.__devices_around[device]['services'][
service_uuid][characteristic_uuid] = {
'characteristic': characteristic,
'handle': characteristic.handle
}
if self.__devices_around[device]['is_new_device']:
log.debug('New device %s - processing.', device)
self.__devices_around[device]['is_new_device'] = False
self.__new_device_processing(device)
for interest_char in self.__devices_around[device][
'interest_uuid']:
characteristics_configs_for_processing_by_methods = {}
for configuration_section in self.__devices_around[
device]['interest_uuid'][interest_char]:
characteristic_uuid_from_config = configuration_section[
'section_config'].get("characteristicUUID")
if characteristic_uuid_from_config is None:
log.error(
'Characteristic not found in config: %s',
pformat(configuration_section))
continue
method = configuration_section[
'section_config'].get('method')
if method is None:
log.error('Method not found in config: %s',
pformat(configuration_section))
continue
characteristics_configs_for_processing_by_methods[
method.upper()] = {
"method":
method,
"characteristicUUID":
characteristic_uuid_from_config
}
for method in characteristics_configs_for_processing_by_methods:
data = self.__service_processing(
device,
characteristics_configs_for_processing_by_methods[
method])
for section in self.__devices_around[device][
'interest_uuid'][interest_char]:
converter = section['converter']
converted_data = converter.convert(
section, data)
self.statistics[
'MessagesReceived'] = self.statistics[
'MessagesReceived'] + 1
log.debug(data)
log.debug(converted_data)
self.__gateway.send_to_storage(
self.get_name(), converted_data)
self.statistics[
'MessagesSent'] = self.statistics[
'MessagesSent'] + 1
except BTLEDisconnectError:
log.debug('Connection lost. Device %s', device)
continue
except Exception as e:
log.exception(e)
def __process_devices(self):
for device in self.__devices:
current_time = time.time()
device_responses = {"timeseries": {},
"attributes": {},
}
to_send = {}
try:
for config_data in device_responses:
if self.__devices[device]["config"].get(config_data) is not None:
unit_id = self.__devices[device]["config"]["unitId"]
if self.__devices[device]["next_"+config_data+"_check"] < current_time:
self.__connect_to_current_master(device)
# Reading data from device
for interested_data in range(len(self.__devices[device]["config"][config_data])):
current_data = self.__devices[device]["config"][config_data][interested_data]
current_data["deviceName"] = device
input_data = self.__function_to_device(current_data, unit_id)
# if not isinstance(input_data, ReadRegistersResponseBase) and input_data.isError():
# log.exception(input_data)
# continue
device_responses[config_data][current_data["tag"]] = {"data_sent": current_data,
"input_data": input_data}
log.debug("Checking %s for device %s", config_data, device)
self.__devices[device]["next_"+config_data+"_check"] = current_time + self.__devices[device]["config"][config_data+"PollPeriod"]/1000
log.debug(device_responses)
converted_data = {}
try:
converted_data = self.__devices[device]["converter"].convert(config={"byteOrder": self.__devices[device]["config"].get("byteOrder", self.__byte_order),
"wordOrder": self.__devices[device]["config"].get("wordOrder", self.__word_order)},
data=device_responses)
except Exception as e:
log.error(e)
if converted_data and self.__devices[device]["config"].get("sendDataOnlyOnChange"):
self.statistics['MessagesReceived'] += 1
to_send = {"deviceName": converted_data["deviceName"], "deviceType": converted_data["deviceType"]}
if to_send.get("telemetry") is None:
to_send["telemetry"] = []
if to_send.get("attributes") is None:
to_send["attributes"] = []
for telemetry_dict in converted_data["telemetry"]:
for key, value in telemetry_dict.items():
if self.__devices[device]["last_telemetry"].get(key) is None or \
self.__devices[device]["last_telemetry"][key] != value:
self.__devices[device]["last_telemetry"][key] = value
to_send["telemetry"].append({key: value})
for attribute_dict in converted_data["attributes"]:
for key, value in attribute_dict.items():
if self.__devices[device]["last_attributes"].get(key) is None or \
self.__devices[device]["last_attributes"][key] != value:
self.__devices[device]["last_attributes"][key] = value
to_send["attributes"].append({key: value})
# to_send["telemetry"] = converted_data["telemetry"]
# if converted_data["attributes"] != self.__devices[device]["attributes"]:
# self.__devices[device]["last_attributes"] = converted_data["attributes"]
# to_send["attributes"] = converted_data["attributes"]
if not to_send.get("attributes") and not to_send.get("telemetry"):
# self.__gateway.send_to_storage(self.get_name(), to_send)
# self.statistics['MessagesSent'] += 1
log.debug("Data has not been changed.")
elif converted_data and self.__devices[device]["config"].get("sendDataOnlyOnChange") is None or not self.__devices[device]["config"].get("sendDataOnlyOnChange"):
self.statistics['MessagesReceived'] += 1
to_send = {"deviceName": converted_data["deviceName"],
"deviceType": converted_data["deviceType"]}
# if converted_data["telemetry"] != self.__devices[device]["telemetry"]:
self.__devices[device]["last_telemetry"] = converted_data["telemetry"]
to_send["telemetry"] = converted_data["telemetry"]
# if converted_data["attributes"] != self.__devices[device]["attributes"]:
self.__devices[device]["last_attributes"] = converted_data["attributes"]
to_send["attributes"] = converted_data["attributes"]
# self.__gateway.send_to_storage(self.get_name(), to_send)
# self.statistics['MessagesSent'] += 1
if to_send.get("attributes") or to_send.get("telemetry"):
self.__gateway.send_to_storage(self.get_name(), to_send)
self.statistics['MessagesSent'] += 1
except ConnectionException:
time.sleep(5)
log.error("Connection lost! Reconnecting...")
except Exception as e:
log.exception(e)
def run(self):
while not self.__connected:
try:
self.client.connect()
try:
self.client.load_type_definitions()
except Exception as e:
log.debug(e)
log.debug("Error on loading type definitions.")
log.debug(self.client.get_namespace_array()[-1])
log.debug(
self.client.get_namespace_index(
self.client.get_namespace_array()[-1]))
except ConnectionRefusedError:
log.error(
"Connection refused on connection to OPC-UA server with url %s",
self.__server_conf.get("url"))
time.sleep(10)
except OSError:
log.error(
"Connection refused on connection to OPC-UA server with url %s",
self.__server_conf.get("url"))
time.sleep(10)
except Exception as e:
log.debug("error on connection to OPC-UA server.")
log.error(e)
time.sleep(10)
else:
self.__connected = True
log.info("OPC-UA connector %s connected to server %s",
self.get_name(), self.__server_conf.get("url"))
self.__initialize_client()
while not self.__stopped:
try:
time.sleep(.1)
self.__check_connection()
if not self.__connected and not self.__stopped:
self.client.connect()
self.__initialize_client()
log.info("Reconnected to the OPC-UA server - %s",
self.__server_conf.get("url"))
elif not self.__stopped:
if self.__server_conf.get(
"disableSubscriptions", False
) and time.time(
) * 1000 - self.__previous_scan_time > self.__server_conf.get(
"scanPeriodInMillis", 60000):
self.scan_nodes_from_config()
self.__previous_scan_time = time.time() * 1000
# giusguerrini, 2020-09-24: Fix: flush event set and send all data to platform,
# so data_to_send doesn't grow indefinitely in case of more than one value change
# per cycle, and platform doesn't lose events.
# NOTE: possible performance improvement: use a map to store only one event per
# variable to reduce frequency of messages to platform.
while self.data_to_send:
self.__gateway.send_to_storage(self.get_name(),
self.data_to_send.pop())
if self.__stopped:
self.close()
break
except (KeyboardInterrupt, SystemExit):
self.close()
raise
except FuturesTimeoutError:
self.__check_connection()
except Exception as e:
log.error(
"Connection failed on connection to OPC-UA server with url %s",
self.__server_conf.get("url"))
log.exception(e)
self.client = Client(
self.__opcua_url,
timeout=self.__server_conf.get("timeoutInMillis", 4000) /
1000)
self._subscribed = {}
self.__available_object_resources = {}
time.sleep(10)
def server_side_rpc_handler(self, content):
done = False
try:
if not self.is_connected():
log.warning(
"[%s] Cannot process RPC request: not connected to database",
self.get_name())
raise Exception("no connection")
is_rpc_unknown = False
rpc_config = self.__config["serverSideRpc"]["methods"].get(
content["data"]["method"])
if rpc_config is None:
if not self.__config["serverSideRpc"]["enableUnknownRpc"]:
log.warning("[%s] Ignore unknown RPC request '%s' (id=%s)",
self.get_name(), content["data"]["method"],
content["data"]["id"])
raise Exception("unknown RPC request")
else:
is_rpc_unknown = True
rpc_config = content["data"].get("params", {})
sql_params = rpc_config.get("args", [])
query = rpc_config.get("query", "")
else:
if self.__config["serverSideRpc"]["overrideRpcConfig"]:
rpc_config = {
**rpc_config,
**content["data"].get("params", {})
}
# The params attribute is obsolete but leave for backward configuration compatibility
sql_params = rpc_config.get("args") or rpc_config.get(
"params", [])
query = rpc_config.get("query", "")
log.debug(
"[%s] Processing %s '%s' RPC request (id=%s) for '%s' device: params=%s, query=%s",
self.get_name(), "unknown" if is_rpc_unknown else "",
content["data"]["method"], content["data"]["id"],
content["device"], sql_params, query)
if self.__rpc_cursor is None:
self.__rpc_cursor = self.__connection.cursor()
if query:
if sql_params:
self.__rpc_cursor.execute(query, sql_params)
else:
self.__rpc_cursor.execute(query)
else:
if sql_params:
self.__rpc_cursor.execute(
"{{CALL {} ({})}}".format(
content["data"]["method"],
("?," * len(sql_params))[0:-1]), sql_params)
else:
self.__rpc_cursor.execute("{{CALL {}}}".format(
content["data"]["method"]))
done = True
log.debug(
"[%s] Processed '%s' RPC request (id=%s) for '%s' device",
self.get_name(), content["data"]["method"],
content["data"]["id"], content["device"])
except pyodbc.Warning as w:
log.warning(
"[%s] Warning while processing '%s' RPC request (id=%s) for '%s' device: %s",
self.get_name(), content["data"]["method"],
content["data"]["id"], content["device"], str(w))
except Exception as e:
log.error(
"[%s] Failed to process '%s' RPC request (id=%s) for '%s' device: %s",
self.get_name(), content["data"]["method"],
content["data"]["id"], content["device"], str(e))
finally:
if done and rpc_config.get("result",
self.DEFAULT_PROCESS_RPC_RESULT):
response = self.row_to_dict(self.__rpc_cursor.fetchone())
self.__gateway.send_rpc_reply(content["device"],
content["data"]["id"], response)
else:
self.__gateway.send_rpc_reply(content["device"],
content["data"]["id"],
{"success": done})
def __search_nodes_and_subscribe(self, device_info):
information_types = {
"attributes": "attributes",
"timeseries": "telemetry"
}
for information_type in information_types:
for information in device_info["configuration"][information_type]:
information_key = information["key"]
config_path = TBUtility.get_value(information["path"],
get_tag=True)
information_path = self._check_path(config_path,
device_info["deviceNode"])
information["path"] = '${%s}' % information_path
information_nodes = []
self.__search_node(device_info["deviceNode"],
information_path,
result=information_nodes)
for information_node in information_nodes:
if information_node is not None:
information_value = information_node.get_value()
log.debug(
"Node for %s \"%s\" with path: %s - FOUND! Current values is: %s",
information_type, information_key,
information_path, str(information_value))
if device_info.get("uplink_converter") is None:
configuration = {
**device_info["configuration"], "deviceName":
device_info["deviceName"],
"deviceType":
device_info["deviceType"]
}
if device_info["configuration"].get(
'converter') is None:
converter = OpcUaUplinkConverter(configuration)
else:
converter = TBUtility.check_and_import(
self._connector_type, configuration)
device_info["uplink_converter"] = converter
else:
converter = device_info["uplink_converter"]
self.subscribed[information_node] = {
"converter": converter,
"path": information_path,
"config_path": config_path
}
if not device_info.get(
information_types[information_type]):
device_info[
information_types[information_type]] = []
converted_data = converter.convert(
(config_path, information_path), information_value)
self.statistics['MessagesReceived'] += 1
self.data_to_send.append(converted_data)
self.statistics['MessagesSent'] += 1
if self.__sub is None:
self.__sub = self.client.create_subscription(
self.__server_conf.get(
"subCheckPeriodInMillis", 500),
self.__sub_handler)
if self.__sub:
self.__sub.subscribe_data_change(information_node)
log.debug("Added subscription to node: %s",
str(information_node))
log.debug("Data to ThingsBoard: %s", converted_data)
else:
log.error(
"Node for %s \"%s\" with path %s - NOT FOUND!",
information_type, information_key,
information_path)
def __init__(self, gateway, config, connector_type):
self._connector_type = connector_type
self.statistics = {'MessagesReceived': 0, 'MessagesSent': 0}
super().__init__()
self.__gateway = gateway
self.__server_conf = config.get("server")
self.__interest_nodes = []
self.__available_object_resources = {}
self.__show_map = self.__server_conf.get("showMap", False)
self.__previous_scan_time = 0
for mapping in self.__server_conf["mapping"]:
if mapping.get("deviceNodePattern") is not None:
self.__interest_nodes.append(
{mapping["deviceNodePattern"]: mapping})
else:
log.error(
"deviceNodePattern in mapping: %s - not found, add property deviceNodePattern to processing this mapping",
dumps(mapping))
if "opc.tcp" not in self.__server_conf.get("url"):
opcua_url = "opc.tcp://" + self.__server_conf.get("url")
else:
opcua_url = self.__server_conf.get("url")
self.client = Client(
opcua_url,
timeout=self.__server_conf.get("timeoutInMillis", 4000) / 1000)
if self.__server_conf["identity"]["type"] == "cert.PEM":
try:
ca_cert = self.__server_conf["identity"].get("caCert")
private_key = self.__server_conf["identity"].get("privateKey")
cert = self.__server_conf["identity"].get("cert")
security_mode = self.__server_conf["identity"].get(
"mode", "SignAndEncrypt")
policy = self.__server_conf["security"]
if cert is None or private_key is None:
log.exception(
"Error in ssl configuration - cert or privateKey parameter not found"
)
raise
security_string = policy + ',' + security_mode + ',' + cert + ',' + private_key
if ca_cert is not None:
security_string = security_string + ',' + ca_cert
self.client.set_security_string(security_string)
except Exception as e:
log.exception(e)
if self.__server_conf["identity"].get("username"):
self.client.set_user(
self.__server_conf["identity"].get("username"))
if self.__server_conf["identity"].get("password"):
self.client.set_password(
self.__server_conf["identity"].get("password"))
self.setName(
self.__server_conf.get(
"name", 'OPC-UA ' +
''.join(choice(ascii_lowercase)
for _ in range(5))) + " Connector")
self.__opcua_nodes = {}
self._subscribed = {}
self.data_to_send = []
self.__sub_handler = SubHandler(self)
self.__stopped = False
self.__connected = False
self.daemon = True
def run(self):
while not self.__connected:
try:
self.__connected = self.client.connect()
try:
self.client.load_type_definitions()
except Exception as e:
log.debug(e)
log.debug("Error on loading type definitions.")
log.debug(self.client.get_namespace_array()[-1])
log.debug(
self.client.get_namespace_index(
self.client.get_namespace_array()[-1]))
except ConnectionRefusedError:
log.error(
"Connection refused on connection to OPC-UA server with url %s",
self.__server_conf.get("url"))
time.sleep(10)
except OSError:
log.error(
"Connection refused on connection to OPC-UA server with url %s",
self.__server_conf.get("url"))
time.sleep(10)
except Exception as e:
log.debug("error on connection to OPC-UA server.")
log.error(e)
time.sleep(10)
else:
self.__connected = True
log.info("OPC-UA connector %s connected to server %s",
self.get_name(), self.__server_conf.get("url"))
self.__opcua_nodes["root"] = self.client.get_objects_node()
self.__opcua_nodes["objects"] = self.client.get_objects_node()
if not self.__server_conf.get("disableSubscriptions", False):
self.__sub = self.client.create_subscription(
self.__server_conf.get("subCheckPeriodInMillis", 500),
self.__sub_handler)
else:
self.__sub = False
self.__scan_nodes_from_config()
self.__previous_scan_time = time.time() * 1000
log.debug('Subscriptions: %s', self.subscribed)
log.debug("Available methods: %s", self.__available_object_resources)
while not self.__stopped:
try:
time.sleep(.1)
self.__check_connection()
if not self.__connected and not self.__stopped:
self.client.connect()
elif not self.__stopped:
if self.__server_conf.get(
"disableSubscriptions", False
) and time.time(
) * 1000 - self.__previous_scan_time > self.__server_conf.get(
"scanPeriodInMillis", 60000):
self.__scan_nodes_from_config()
self.__previous_scan_time = time.time() * 1000
if self.data_to_send:
self.__gateway.send_to_storage(self.get_name(),
self.data_to_send.pop())
if self.__stopped:
self.close()
break
except (KeyboardInterrupt, SystemExit):
self.close()
raise
except ConnectionRefusedError:
log.error(
"Connection refused on connection to OPC-UA server with url %s",
self.__server_conf.get("url"))
time.sleep(10)
except Exception as e:
self.close()
log.exception(e)
def __search_node(self,
current_node,
fullpath,
search_method=False,
result=None):
if result is None:
result = []
try:
if regex.match(r"ns=\d*;[isgb]=.*", fullpath, regex.IGNORECASE):
if self.__show_map:
log.debug("Looking for node with config")
node = self.client.get_node(fullpath)
if node is None:
log.warning("NODE NOT FOUND - using configuration %s",
fullpath)
else:
log.debug("Found in %s", node)
result.append(node)
else:
fullpath_pattern = regex.compile(fullpath)
full1 = fullpath.replace('\\\\.', '.')
for child_node in current_node.get_children():
new_node_class = child_node.get_node_class()
#basis Description of node.get_parent() function, sometime child_node.get_parent() return None
new_parent = child_node.get_parent()
if (new_parent is None):
child_node_parent_class = current_node.get_node_class()
else:
child_node_parent_class = child_node.get_parent(
).get_node_class()
current_node_path = '\\.'.join(
char.split(":")[1]
for char in current_node.get_path(200000, True))
new_node_path = '\\\\.'.join(
char.split(":")[1]
for char in child_node.get_path(200000, True))
if child_node_parent_class == ua.NodeClass.View and new_parent is not None:
parent_path = '\\.'.join(
char.split(":")[1]
for char in child_node.get_parent().get_path(
200000, True))
fullpath = fullpath.replace(current_node_path,
parent_path)
nnp1 = new_node_path.replace('\\\\.', '.')
nnp2 = new_node_path.replace('\\\\', '\\')
if self.__show_map:
log.debug("SHOW MAP: Current node path: %s",
new_node_path)
regex_fullmatch = regex.fullmatch(fullpath_pattern, nnp1) or \
nnp2 == full1 or \
nnp2 == fullpath or \
nnp1 == full1
if regex_fullmatch:
if self.__show_map:
log.debug(
"SHOW MAP: Current node path: %s - NODE FOUND",
nnp2)
result.append(child_node)
else:
regex_search = fullpath_pattern.fullmatch(nnp1, partial=True) or \
nnp2 in full1 or \
nnp1 in full1
if regex_search:
if self.__show_map:
log.debug(
"SHOW MAP: Current node path: %s - NODE FOUND",
new_node_path)
if new_node_class == ua.NodeClass.Object:
if self.__show_map:
log.debug("SHOW MAP: Search in %s",
new_node_path)
self.__search_node(child_node,
fullpath,
result=result)
elif new_node_class == ua.NodeClass.Variable:
log.debug("Found in %s", new_node_path)
result.append(child_node)
elif new_node_class == ua.NodeClass.Method and search_method:
log.debug("Found in %s", new_node_path)
result.append(child_node)
except CancelledError:
log.error(
"Request during search has been canceled by the OPC-UA server."
)
except BrokenPipeError:
log.error("Broken Pipe. Connection lost.")
except OSError:
log.debug("Stop on scanning.")
except Exception as e:
log.exception(e)
async def connect_to_device(self):
try:
log.info('Trying to connect to %s with %s MAC address', self.name, self.mac_address)
await self.client.connect(timeout=self.timeout)
except Exception as e:
log.error(e)