URL Routes

Routes registration

The application can register its list of HTTP APIs in Callback.routes() callback. Callback.routes() method is called with the Mapper object and all the urls for an application must be connected to this mapper through this callback.

Every URL should start with /<provider-code>/<app-code>/

Where <provider-code> and the <app-code> will be the application’s provider code and app code registered with the Aalam developer portal. Any URL that violates the above condition cannot not be accessed at all.

Following are some examples on the URL formats.

  • Static URL with no dynamic arguments are like below. Only the requests matching this exact format will be routed to this handler

  • If a url has a dynamic argument, the dynamic arguments should be enclosed in {}, the name of the argument will be passed as a parameter to the action of the handler for this URL. Ex.


    In here, the {user_email_id} is a dynamic argument and the handler method will be passed with this argument. The above URL will match for URL like,

  • If a URL has many dynamic arguments, the action of the handler will be passed with order of their appearence. Ex.


    In the above example, email_id and status are passed to the action method in the order of the appearence. The action method can be defined like

    public Object markUserStatus(HttpRequest request, String email_id, String status):
        # Actual logic here
  • The first parameter of the action handler is the HttpRequest object. Detail related to the request like the input content, the authentication parameters, authorization parameters, request url, etc all can accessed using this object.

  • The action handler is expected to return an Object. If the return value is non-null, then it should either be

  • The action handler can throw a HttpException if it wishes to abort processing on any error with an appropriate status code.