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Posted to users@camel.apache.org by Le...@swm.de on 2019/10/18 12:31:04 UTC
Problems connecting to OPC UA server
Hi,
I am working on a project where I receive data via OPC UA. I process the data to get a unique OID for SNMP. Afterwards I send the OID to a PRTG Monitoring System.
Right now, I send data with the Prosys OPC UA simulation server and try to connect with camel. The connection to the server works but I get a Java NullPointerException on class Subscription Manager.
The error message looks like that:
java.lang.NullPointerException: null
at org.apache.camel.component.milo.client.internal.SubscriptionManager$Connected.lookupNamespace(SubscriptionManager.java:287) ~[camel-milo-2.24.2.jar:2.24.2]
at org.apache.camel.component.milo.client.internal.SubscriptionManager$Connected.putSubscriptions(SubscriptionManager.java:168) ~[camel-milo-2.24.2.jar:2.24.2]
...
My route looks like that:
from("milo-client:opc.tcp://localhost:4048/example?method=RAW(ns=5;s=MyLevel)&allowedSecurityPolicies=None")
.bean("NotrufsaulenTransformation", "transformData")
.to("snmp://127.0.0.1:161?protocol=udp&type=POLL");
Is there anything wrong with my route or the connection to the OPC UA server?
I am using Apache Camel version 2.24.2 with Spring Boot Framework 2.1.7.
Thank you very much in advance for your help!
Best regards,
Stefan Lederer
Re: Problems connecting to OPC UA server
Posted by Claus Ibsen <cl...@gmail.com>.
Hi
Maybe you can debug the code, as it appears that the node id is null,
maybe debugging can help diagnose the problem?
On Fri, Oct 18, 2019 at 2:31 PM <Le...@swm.de> wrote:
>
> Hi,
>
> I am working on a project where I receive data via OPC UA. I process the data to get a unique OID for SNMP. Afterwards I send the OID to a PRTG Monitoring System.
> Right now, I send data with the Prosys OPC UA simulation server and try to connect with camel. The connection to the server works but I get a Java NullPointerException on class Subscription Manager.
>
> The error message looks like that:
> java.lang.NullPointerException: null
> at org.apache.camel.component.milo.client.internal.SubscriptionManager$Connected.lookupNamespace(SubscriptionManager.java:287) ~[camel-milo-2.24.2.jar:2.24.2]
> at org.apache.camel.component.milo.client.internal.SubscriptionManager$Connected.putSubscriptions(SubscriptionManager.java:168) ~[camel-milo-2.24.2.jar:2.24.2]
> ...
>
> My route looks like that:
> from("milo-client:opc.tcp://localhost:4048/example?method=RAW(ns=5;s=MyLevel)&allowedSecurityPolicies=None")
> .bean("NotrufsaulenTransformation", "transformData")
> .to("snmp://127.0.0.1:161?protocol=udp&type=POLL");
>
> Is there anything wrong with my route or the connection to the OPC UA server?
>
> I am using Apache Camel version 2.24.2 with Spring Boot Framework 2.1.7.
>
>
> Thank you very much in advance for your help!
>
> Best regards,
> Stefan Lederer
>
--
Claus Ibsen
-----------------
http://davsclaus.com @davsclaus
Camel in Action 2: https://www.manning.com/ibsen2