Add more than 1 user on a session

Ignition
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1

Hi ,

I have a situation where 2 operators work on a station. While only one can login, there was no way for us to capture the other person's name. I created a button for authentication challenge and in return it would add 2nd operator,s name to session custom property and a flex repeater at the top would appear with his name. And by clicking on his name it will remove him from session custom propety as well. This I was able to capture more than 1 operators working at a station.

The only issue is, if the same 2nd operator logs in to other station. It allows him to aquire a session. However what i need to implement is it logs him out from their previous logged station not affecting the first operator who logged in initially.

I hope this explains the situation I am trying to tackle and happy to take your suggestions.

Thank you.

2

You have to create a dataset tag (or something) that stores the active sessions and their operators. That way all sessions can lookup the operators of the other sessions

3

Or, perhaps, broadcast every user auth result, both primary user and secondary user, to all other sessions. So the other sessions can kick them out.

4

Can you please explain in more detail of what do you mean by broadcast?

5

Use system.util.sendMessage() with scope=S (not system.perspective.sendMessage()), which targets session message handlers (defined in the session, not in any component).

6

from pageStartup event? or sessionStartup?

7

I get this .

Error running session.handleMessage(session, payload): Traceback (most recent call last): File "function:handleMessage", line 10, in handleMessage at com.inductiveautomation.perspective.gateway.script.AbstractScriptingFunctions.lambda$operateOnPage$0(AbstractScriptingFunctions.java:64) at com.inductiveautomation.perspective.gateway.script.AbstractScriptingFunctions.operateOnSession(AbstractScriptingFunctions.java:120) at com.inductiveautomation.perspective.gateway.script.AbstractScriptingFunctions.operateOnPage(AbstractScriptingFunctions.java:47) at com.inductiveautomation.perspective.gateway.script.PerspectiveScriptingFunctions.authenticationChallenge(PerspectiveScriptingFunctions.java:418) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.base/java.lang.reflect.Method.invoke(Unknown Source) java.lang.IllegalArgumentException: java.lang.IllegalArgumentException: No perspective page attached to this thread.

8

What is your message handler code?

9 
logger = system.util.getLogger('Operator Check - Page Startup')
current_username = payload['current_username']
Full_name = payload['Full_name']
session_id = payload['session_id']
Support_Users = session.custom.Support_Users

if session.props.id != session_id and session.props.auth.user.userName == current_username:
	system.perspective.logout(sessionID=session.props.id, message = Full_name + " Your account has been logged out due to log in at other station. Please contact supervisor for concerns.")
	logger.info("User automatic logout : %s , session: %d" % (current_username, session.props.id))

elif Full_name in Support_Users:
	Support_Users.remove(Full_name)
	logger.info("Support_User Kicked out : %s , session: %d" % (current_username, session.props.id))