/**
* Convert the given {@linkplain RouterFunction routing function} into a {@link HttpHandler},
* using the given strategies.
*
* <p>The returned {@code HttpHandler} can be adapted to run in
*
* <ul>
* <li>Servlet 3.1+ using the {@link
* org.springframework.http.server.reactive.ServletHttpHandlerAdapter},
* <li>Reactor using the {@link
* org.springframework.http.server.reactive.ReactorHttpHandlerAdapter},
* <li>RxNetty using the {@link
* org.springframework.http.server.reactive.RxNettyHttpHandlerAdapter}, or
* <li>Undertow using the {@link
* org.springframework.http.server.reactive.UndertowHttpHandlerAdapter}.
* </ul>
*
* @param routerFunction the routing function to convert
* @param strategies the strategies to use
* @return an http handler that handles HTTP request using the given routing function
*/
public static HttpHandler toHttpHandler(
RouterFunction<?> routerFunction, HandlerStrategies strategies) {
Assert.notNull(routerFunction, "RouterFunction must not be null");
Assert.notNull(strategies, "HandlerStrategies must not be null");
return new HttpWebHandlerAdapter(
exchange -> {
ServerRequest request = new DefaultServerRequest(exchange, strategies);
addAttributes(exchange, request);
HandlerFunction<?> handlerFunction = routerFunction.route(request).orElse(notFound());
ServerResponse<?> response = handlerFunction.handle(request);
return response.writeTo(exchange, strategies);
});
}
/**
* Converts the given {@linkplain RouterFunction routing function} into a {@link HttpHandler},
* using the given configuration.
*
* <p>The returned {@code HttpHandler} can be adapted to run in
*
* <ul>
* <li>Servlet 3.1+ using the {@link
* org.springframework.http.server.reactive.ServletHttpHandlerAdapter},
* <li>Reactor using the {@link
* org.springframework.http.server.reactive.ReactorHttpHandlerAdapter},
* <li>RxNetty using the {@link
* org.springframework.http.server.reactive.RxNettyHttpHandlerAdapter}, or
* <li>Undertow using the {@link
* org.springframework.http.server.reactive.UndertowHttpHandlerAdapter}.
* </ul>
*
* @param routerFunction the routing function to convert
* @param configuration the configuration to use
* @return an http handler that handles HTTP request using the given routing function
*/
public static HttpHandler toHttpHandler(
RouterFunction<?> routerFunction, Configuration configuration) {
Assert.notNull(routerFunction, "'routerFunction' must not be null");
Assert.notNull(configuration, "'configuration' must not be null");
return new HttpWebHandlerAdapter(
exchange -> {
Request request = new DefaultRequest(exchange, configuration);
addAttributes(exchange, request);
HandlerFunction<?> handlerFunction = routerFunction.route(request).orElse(notFound());
Response<?> response = handlerFunction.handle(request);
return response.writeTo(exchange, configuration);
});
}
