Graceful shutdown

[vdakalov]

Hello. Tell me please, how I can clear this timer?

Lightstreamer-lib-client-javascript/src-tool/Executor.js

Line 104 in 6e549e4

timer = setInterval(execute,step);

It's need for clear task queue in event loop and graceful shutdown. I studied your code, but I not found public method to make it.

[weswit-team]

Hello,

Executor.js is not a public module and it is not meant to be a general purpose scheduler, so its API only exposes the operations that are strictly needed by the other modules.
On the other hand, if you need to be able to shutdown the executor, it is not difficult to make such an extension.

[weswit-team]

Hello Viktor,

Maybe I have misunderstood your requirements.
Do you want to destroy the Excutor because (1) you have finished with the LightstreamerClient and you want to release all the resources, or (2) you have found that the Executor survives to the closing of the page and you fear there is some kind of leakage?

[vdakalov]

No, I'm just want to allow nodejs process made graceful shutdown. This is not possible because Executor module has active interval. So, I have to make hard stopping with process.exit(). Otherwise process continue working and this is bad. I'm not work with the library in browser, Node.js only. Also leaks doesn't bother me.

[vdakalov]

This commit solve my problem vdakalov@f8a8e0f

[weswit-team]

Hello Viktor,

That makes sense. We will try to add the feature in a next release of the client.

[vdakalov]

Thank you. I thing it's a single way. Because when I build my own client with other version and build I have error 71 License not valid for this Client type. When I set original LS_CID value, client start works. I understand correctly, any time when you release a new version, it will broken other clients with own LS_CID hash?

[weswit-team]

Indeed, the rule is that a custom client cannot have a version greater than the last released. Otherwise the server will not accept it. For example, since the last released version is 8.0.2, you cannot use 8.1.0. Our advice is to choose a version having 0 as major number (e.g. 0.X.Y).

We will make the build instructions clearer about this point.