[Kimchi-devel] [RFC] Improve task management for kimchi

[Yu Xin Huo]

For this RFC, we are trying to create a *generic message notification 
component* to handle *long task*.

I do not think any new tab is needed for message subscribe configuration.

If this long task is at console admin 
level(host/template/network/storage pool), I recommend to share this 
message among all *root* users.
If this long task is at VM level, only *VM users* got this message.

The task should be identified by the uri(web api) that triggered it.

On 6/27/2014 7:15 PM, Wen Wang wrote:
> Dear all,
> *
> **Problems:*
> Now our strategy  for long time operation is using task which the 
> browser needs to check up-to-date task status time by time until the 
> task ends. It's time consuming and less efficient. Also there exists 
> several problems when locating each task when doing debug generating 
> and storage pool as well as some new features that might use task 
> strategy in the future.
>
> *Solution*:
> As talked with Sheldon and Zhengsheng, we came up with a solution that 
> avoid browser checking status every 200ms. Also, we might need some 
> more labels in each task to provide more information when getting the 
> task like we might need to indicate which operation triggered certain 
> task. What's in our mind is to use the strategy that allow the server 
> inform browser about the task information. Our proposal is designed as 
> follows.
>
> 1) Browser needs to register to the back end to indicate which part 
> the result needs to reply to when the task finished.
> 2) The back end use broker to manage message distribution: when a task 
> is finished or experiencing an error, back end inform the browser 
> certain part of work is finished or error.
> 3) Using websocket of cherrypy to accomplish the message transfer.
>
> Best Regards
>
> Wang Wen
>
>
>
>
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