Mqtt extension "System" user

[cbaurand]

Hello,

I'm starting to use Mqtt extension. All works fine. My thing is connected to the broker and i can receive and publish messages. The problem i have is, when i receive a message from the broker, the user that runs the thread is "System". Is there a way to change this user to my own "system" user ?

Thanks for your help,

Cyril.

[PaiChung]

I think most likely you are invoking some platform event mechanism causing it to turn as system or superuser which basically has permissions to trigger anything.

I have seen on Timers and Schedulers the ability to run under a certain user.

Now the bad news, I don't know how you can add that to your extension

[cbaurand]

@PaiChung You're right, i saw that the subscription called on a mqtt property change is done by the System User. My problem is, this System user doesn't have the visibility on the things i need at this level.

I don't want that this System user gets this visibility. I want that my own user, like a "MqttUser" gets this visibility.

[abjain · Accepted solution]

@cbaurand : I think in this case you will have to provided appropriate permission to 'System user' itself as for your own user , you will have to give permission at multiple levels. Please go through the following documentation on how a System user makes management of internal service permission easier- http://support.ptc.com/help/thingworx_hc/thingworx_8_hc/en/#page/ThingWorx%2FHelp%2FComposer%2FSecurity%2FSystemUser.html

Would also recommend to go through the article: https://www.ptc.com/en/support/article/CS270968 

[cbaurand]

IF i do what you propose, my System user will have visibility on all of my assets. Isn't it something that breaks the security?

[PaiChung]

Since nobody can be logged in directly as system user it is not a threat to your security.

[slangley]

Hi @cbaurand

If one of the previous responses helped to answer your question, please mark the appropriate one as the Accepted Solution for the benefit of others with the same question.

Regards.

--Sharon