[BUG] OPCUA it takes 3 minutes for 15 Variables before being ready

[ysimonx]

Scanning OPCUA path is very long Each time I start thingsboard-gateway, the process scans for UA variables specified in a opcua.json file with a path example { "key": "deltap100", "path": "${User Registers\\.cPURE\\.Fan\\.DeltaP_100}" }

The process is very long before the gateway is ready It takes at least 3 minutes for 15 variables (7 telemetry, 7 attributes, 1 shared attribute) before being able to process MQTT uplink and downlink

OPC-UA Connector:

Versions :

• OS: Mac OS
• Thingsboard IoT Gateway version 3.0
• Python version 3.9

[ysimonx]

reverse-engineering :

def get_node_path(self, node: Node):

        return '\\.'.join(node.get_browse_name().Name for node in node.get_path(200000))

builds a fullpath for each node and is too long

if I add a "LRU Cache" for this function

@lru_cache(maxsize=None)
def get_node_path(self, node: Node):

        return '\\.'.join(node.get_browse_name().Name for node in node.get_path(200000))

Instead of 3 minutes, I have to wait only 30 seconds 6 times faster

[ysimonx]

Same result with

@cachetools.func.ttl_cache(maxsize=1000, ttl=10 * 60)
def get_node_path(self, node: Node):

[samson0v]

Hi @ysimonx, is it ok to close this issue?

[ysimonx]

yes @samson0v :) thank you