See: http://playframework.org/

The repo is created here: https://github.com/jcasbin/play-authz , you can make PR to add code to it.

You can see existing similar authorization modules for Play as reference: https://www.playframework.com/documentation/2.8.x/ModuleDirectory#Authentication-(Login-&-Registration)-and-Authorization-(Restricted-Access)

You can refer to how we make middleware for other web frameworks like:

• SpringBoot: https://github.com/jcasbin/casbin-spring-boot-starter
• Shiro: https://github.com/jcasbin/shiro-casbin
• JFinal: https://github.com/jcasbin/jfinal-authz