The billing calculator determines how much to charge a customer based on the SLA they are using, and how much service they used. Hence, the input to this is the usage on the SLA and the SLA ID. The output is a call to the Trade Account Service with the amount to bill the customer and the ID of the account.

This is a service hosted by a service provider and used to keep track of their customers’ spending at the service provider, from which statements (bills) can be generated. The Billing Calculator connects to this service, and reports the amounts owed by a particular customer. The customer can access this service to find out the amounts they owe, and make payments out of band. The service provider’s manager can record the customer’s payments.

Prerequisites

Software Installation

Prerequisites

The Billing Calculator is a Java set of libraries having no particular installation prerequisites apart from Jena and Pellet (They should be provided before the installation package).

Installation

The BC component is deployed as a Web service in a .war file. By using the BREIN installer, the .war file is just deployed inside the Tomcat server container. In order to run the application, the user can just link the BC file which starts Tomcat.

To configure the component, the user can update the configuration file (sess.properties) with the following properties:

·    log_file: the path of the file where the logs are stored.

·    log_level: level of the log (FINE, CONFIG, INFO, WARNING, SEVERE)

·    url_slat: the URL where the BC service is deployed

Finally, the services should be accessible locally at the following URL:

       http://localhost:8080/BC-2.0/BCService