thingsboard-gateway: Possible Regex issue with OPC UA Connector - IndexError: list index out of range

Hello! Below are the versions I’m using: Thingsboard @ 2.4.1 Gateway @ 2.0.0.2 KepEx Server 6.X Demo data

I am not able to scan for devices using the opc-ua.json config file. Im able to get connected and even see some of the data being sent from KEPEx using a packet sniffer(though they aren’t very readable) The logs are as below: Thingsboard :

2020-01-07 13:28:20.520  INFO 30115 --- [ntLoopGroup-4-3] o.t.s.t.mqtt.MqttTransportHandler        : [d7ce6301-84b2-40a9-b93a-39d2ee5c63c5] Processing connect msg for client: !
2020-01-07 13:28:20.520  INFO 30115 --- [ntLoopGroup-4-3] o.t.s.t.mqtt.MqttTransportHandler        : [d7ce6301-84b2-40a9-b93a-39d2ee5c63c5] Processing connect msg for client with user name: N530rKRR83dXx0gmZoiJ!
2020-01-07 13:28:20.523  INFO 30115 --- [ool-8-worker-21] o.t.s.t.mqtt.MqttTransportHandler        : [d7ce6301-84b2-40a9-b93a-39d2ee5c63c5] Client connected!
2020-01-07 13:28:20.548  WARN 30115 --- [ntLoopGroup-4-3] o.t.s.t.mqtt.MqttTransportHandler        : [d7ce6301-84b2-40a9-b93a-39d2ee5c63c5] Failed to subscribe to [v1/gateway/attributes/response/+][AT_MOST_ONCE]
2020-01-07 13:28:20.548  WARN 30115 --- [ntLoopGroup-4-3] o.t.s.t.mqtt.MqttTransportHandler        : [d7ce6301-84b2-40a9-b93a-39d2ee5c63c5] Failed to subscribe to [v1/gateway/rpc/+][AT_MOST_ONCE]

Gateway:

cat /var/log/thingsboard-gateway/connector.log 
''2020-01-07 13:28:22' - INFO - opcua_connector - 86 - Starting OPC-UA Connector'
''2020-01-07 13:28:22' - INFO - opcua_connector - 102 - OPC-UA connector OPC-UA Default Server Connector connected to server 192.168.0.112:49321/'
''2020-01-07 13:28:23' - ERROR - opcua_connector - 203 - list index out of range'
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/dist-packages/thingsboard_gateway-2.0-py3.6.egg/thingsboard_gateway/connectors/opcua/opcua_connector.py", line 174, in __search_name
    if re.search(int_node.split('\\.')[recursion_level-2], ch.get_display_name().Text):
IndexError: list index out of range
''2020-01-07 13:28:24' - ERROR - opcua_connector - 259 - list index out of range'
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/dist-packages/thingsboard_gateway-2.0-py3.6.egg/thingsboard_gateway/connectors/opcua/opcua_connector.py", line 214, in __search_tags
    if re.search(int_node.split('\\.')[recursion_level-2], ch.get_display_name().Text):
IndexError: list index out of range
''2020-01-07 13:28:24' - DEBUG - opcua_connector - 108 - Subscriptions: {}'
''2020-01-07 13:28:24' - DEBUG - opcua_connector - 109 - Available methods: {}'

cat /var/log/thingsboard-gateway/service.log
''2020-01-07 13:28:20' - DEBUG - tb_utility - 61 - Load connector for opcua class name - OpcUaConnector from /usr/local/lib/python3.6/dist-packages/thingsboard_gateway-2.0-py3.6.egg/thingsboard_gateway/connectors/opcua'
''2020-01-07 13:28:20' - DEBUG - tb_utility - 66 - ModuleSpec(name='OpcUaConnector', loader=<_frozen_importlib_external.SourceFileLoader object at 0x7f16d1c171d0>, origin='/usr/local/lib/python3.6/dist-packages/thingsboard_gateway-2.0-py3.6.egg/thingsboard_gateway/connectors/opcua/opcua_converter.py')'
''2020-01-07 13:28:20' - DEBUG - tb_utility - 72 - <module 'OpcUaConnector' from '/usr/local/lib/python3.6/dist-packages/thingsboard_gateway-2.0-py3.6.egg/thingsboard_gateway/connectors/opcua/opcua_converter.py'>'
''2020-01-07 13:28:20' - DEBUG - tb_utility - 66 - ModuleSpec(name='OpcUaConnector', loader=<_frozen_importlib_external.SourceFileLoader object at 0x7f16d1bc91d0>, origin='/usr/local/lib/python3.6/dist-packages/thingsboard_gateway-2.0-py3.6.egg/thingsboard_gateway/connectors/opcua/opcua_connector.py')'
''2020-01-07 13:28:20' - DEBUG - tb_utility - 72 - <module 'OpcUaConnector' from '/usr/local/lib/python3.6/dist-packages/thingsboard_gateway-2.0-py3.6.egg/thingsboard_gateway/connectors/opcua/opcua_connector.py'>'
''2020-01-07 13:28:22' - DEBUG - tb_gateway_service - 380 - Loaded devices:

opcua.json:

{
  "server": {
    "name": "OPC-UA Default Server",
    "url": "192.168.0.112:49321/",
    "scanPeriodInMillis": 10000,
    "timeoutInMillis": 5000,
    "security": "Basic128Rsa15",
    "identity": {
      "type": "anonymous"
    },
    "mapping": [
      {
        "deviceNodePattern": "Channel1\\.Device\\d+$",
        "deviceNamePattern": "Device ${_System._DeviceId}",
        "attributes": [
          {
            "key": "Tag2",
            "path": "${Tag2}"
          }
        ],
        "timeseries": [
          {
            "key": "Tag1",
            "path": "${Tag1}"
          },
          {
            "key": "Tag2",
            "path": "${Tag2}"
          }
        ]
      }
    ]
  }
}

tb_gateway.yml

thingsboard:
  host: 127.0.0.1
  port: 1883
  security:
    accessToken: N530rKRR83dXx0gmZoiJ
storage:
  type: memory
  read_records_count: 100
  max_records_count: 100000
#  type: file
#  data_folder_path: ./data/
#  max_file_count: 10
#  max_read_records_count: 10
#  max_records_per_file: 10000
connectors:
-
  name: OPC-UA Connector
  type: opcua
  configuration: opcua.json