Login Restrictions

This project highlights how developers can customize and manipulate with user login procedure in a CUBA application.

Objective

Let’s assume that our CUBA application should be licensed as following:

• More than X concurrent users cannot access the system.
• The license has global expiration date when all users will not be able to login.

Solution

To add custom behaviour for user login we need to create LoginEventListener class that will be handle login events in the platform by following the specified steps:

1. In core module, under the main project package (in our case com.company.loginrestrictions) we create the security subpackage (to keep clear structure and high code readability).

2. Under the com.company.loginrestrictions.security package we create LoginEventListener class with @Component annotation.

3. Create method with BeforeLoginEvent input parameter and add @EventListener annotation to it. It means this method will be invoked when BeforeLoginEvent is triggered.

4. To access the license properties we use standard configuration interfaces mechanism provided by the CUBA Platform. See the LicenseConfig interface. It contains the default values of the license parameters.

5. The default license parameters are overridden in the app.properties file of the core module. See the license.concurrentSessionsLimit property.

Based on CUBA Platform 6.10.1

Issues

Please use https://www.cuba-platform.com/discuss for discussion, support, and reporting problems coressponding to this sample.