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How get number of sessions? [message #1774452]

Sat, 14 October 2017 23:04

Dmitry Dukhov

Messages: 195
Registered: February 2013

Senior Member

short question
How get number of active sessions?
Dmitry

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Re: How get number of sessions? [message #1774467 is a reply to message #1774452]

Mon, 16 October 2017 00:22

Chris Fairhall

Messages: 221
Registered: February 2011

Senior Member

You'd probably have to write an HttpSessionListener to track HttpSession's. To count the number of RAP sessions, you'd need to iterate all the values of all the HttpSessions, and count the ones that are of type UISession

Doesn't sound like a very efficient way of doing things though. What's the use case? Simply for runtime stats?

You could put code in your entrypoint to track the sessions. If you run in SWT Compat mode, the start and end of your createUI method is one place to put it.
For JEE mode, I guess you could increment your count in createUI and add a listener to the UISession to decrement it when it's destroyed.

edit: Or use a HttpSessionBindingListener or HttpAttributeListener, that way you can tract UISession instances directly

[Updated on: Mon, 16 October 2017 00:29]

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Re: How get number of sessions? [message #1774979 is a reply to message #1774452]

Mon, 23 October 2017 07:14

Ivan Furnadjiev

Messages: 2428
Registered: July 2009
Location: Sofia, Bulgaria

Senior Member

Hi,
every UI session has a display object associated. You can use RAP internals to get a array with all display objects like in private method Display#getDisplays:
---
ContextProvider.getApplicationContext().getDisplaysHolder().getDisplays();
---
HTH,
Ivan

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