Dynamically calculate price by Bandwith tranfser in monthly

[highvoltagez]

Dear all

 

I'am a beginer in WHMCS.

I'm developing a Vitual Machine service

 

And Its pirce must dynamically calulate by total amount of usage transfer for each months

(per price 0.1$/1MB).

 

I want to create some packages: etc:

- a VM 20G - price 20$, Upper limit of the Monthly BW is 512MB... --> Max=40$

- a VM 20G - price 20$, Upper limit of the Monthly BW is 2GB... --> Max=60$

 

Example:

In a month, a user brought a VM 20$, He used 200MB BW (with price 0.1$/1MB)

==> Price = 20 + 200*0.1 = 40$

 

But, if he use greater than the Upper limit 512M, it will notify by mail and block service.

 

Please help me some questions..

 

1. How to implement with pricing by BW?

I must create a invoice on 29th of month.

How to synchronize actual data with WHMCS?

what is need for develop? an addon ?

 

2. Where is most storage of DB for usage BW?

Do i need to create a new DB?

 

Thanks so much