/**
* Route to the given routing function if the given request predicate applies.
*
* @param predicate the predicate to test
* @param routerFunction the routing function to route to
* @param <T> the type of the handler function
* @return a routing function that routes to {@code routerFunction} if {@code predicate} evaluates
* to {@code true}
* @see RequestPredicates
*/
public static <T> RouterFunction<T> subroute(
RequestPredicate predicate, RouterFunction<T> routerFunction) {
Assert.notNull(predicate, "'predicate' must not be null");
Assert.notNull(routerFunction, "'routerFunction' must not be null");
return request -> {
if (predicate.test(request)) {
ServerRequest subRequest = predicate.subRequest(request);
return routerFunction.route(subRequest);
} else {
return Optional.empty();
}
};
}
/**
* Route to the given handler function if the given request predicate applies.
*
* @param predicate the predicate to test
* @param handlerFunction the handler function to route to
* @param <T> the type of the handler function
* @return a routing function that routes to {@code handlerFunction} if {@code predicate}
* evaluates to {@code true}
* @see RequestPredicates
*/
public static <T> RouterFunction<T> route(
RequestPredicate predicate, HandlerFunction<T> handlerFunction) {
Assert.notNull(predicate, "'predicate' must not be null");
Assert.notNull(handlerFunction, "'handlerFunction' must not be null");
return request -> predicate.test(request) ? Optional.of(handlerFunction) : Optional.empty();
}
