[play] get open connection count

[k1nga...@gmail.com]

Hi guys,

im running a Java web application based on Playframework 2.5.4 and Apache Webserver.

In some cases (e.g. software patching processes) i need to stop the running application. For this i must be shure, that no open connections are currently available (no users are using the plattform).

Is there an elegant (build-in) way to get the count of all currently opened connections in Play or on the Apache Server ? It would be nice the print the count of opened connections on a view on the application platform.

Best regards.

[Igmar Palsenberg]

 

im running a Java web application based on Playframework 2.5.4 and Apache Webserver.

In some cases (e.g. software patching processes) i need to stop the running application. For this i must be shure, that no open connections are currently available (no users are using the plattform).

Is there an elegant (build-in) way to get the count of all currently opened connections in Play or on the Apache Server ? It would be nice the print the count of opened connections on a view on the application platform.

Apache has server-status, which lists the number of active connections per child. You however still need to parse that. I can't remember if it support multiple formats.

On the Play side : I doubt it. Play is pretty much stateless, and I don't thing it provides this. You might ask the OS (/proc/pid/fd), but you also need to parse that (not every FD is a socket).

Either way isn't elegant, nor portable.

Igmar 

 

[k1nga...@gmail.com]

Thanks for your answer. I'll check the Apache server-status feature.

Regarding the Play side:

On stackoverflow, there is a thread (http://stackoverflow.com/questions/25057854/how-to-store-a-list-of-akka-actors-in-play-framework-2-application)

where is described how to get a list of active clients with the Akka Actor Feature in Play and WebSockets.

Maybe this is also a possible solution for me on the play side. I'll go deeper into this Akka topic.

Or has anyone some experience with this topic and could tell me, if this is a usefull solution for my problem ?