[undertow-dev] Wildcard routing and PathTemplate
Bill O'Neil
bill at dartalley.com
Sat Dec 10 09:02:58 EST 2016
I didn't think the RoutingHandler currently supports wildcards. I'm also
not sure what syntax you are using. Path parameters are handled using
"/path/{param}". Yours is fetching query parameters but there is no query
string so I am confused how it is working at all?
I achieved wildcards by mixing a PathHandler and a RoutingHandler. I use
pathPrefix routes from the path handler for wildcards and RoutingHandler
for the exact routes.
On Sat, Dec 10, 2016 at 6:30 AM, Christian Krampenschiesser <
krampenschiesser at gmail.com> wrote:
> I added those 2 tests to RoutingHandlerTestCase:
>
> @Test
> public void testWildCardRoutingTemplateHandler2() throws IOException {
> TestHttpClient client = new TestHttpClient();
> try {
> HttpGet get = new HttpGet(DefaultServer.getDefaultServerURL() + "/wilder/test/card");
> HttpResponse result = client.execute(get);
> Assert.assertEquals(StatusCodes.OK, result.getStatusLine().getStatusCode());
> Assert.assertEquals("wilder:[/test/card]", HttpClientUtils.readResponse(result));
>
> } finally {
> client.getConnectionManager().shutdown();
> }
> }
>
> @Test
> public void testWildCardRoutingTemplateHandler3() throws IOException {
> TestHttpClient client = new TestHttpClient();
> try {
> HttpGet get = new HttpGet(DefaultServer.getDefaultServerURL() + "/wildestBeast");
> HttpResponse result = client.execute(get);
> Assert.assertEquals(StatusCodes.OK, result.getStatusLine().getStatusCode());
> Assert.assertEquals("wildest:[Beast]", HttpClientUtils.readResponse(result));
>
> } finally {
> client.getConnectionManager().shutdown();
> }
> }
>
> Additional routes are:
>
> .add(Methods.GET, "/wilder/*", new HttpHandler() {
> @Override
> public void handleRequest(HttpServerExchange exchange) throws Exception {
> exchange.getResponseSender().send("wilder:" + exchange.getQueryParameters().get("*"));
> }
> })
> .add(Methods.GET, "/wildest*", new HttpHandler() {
> @Override
> public void handleRequest(HttpServerExchange exchange) throws Exception {
> exchange.getResponseSender().send("wildest:" + exchange.getQueryParameters().get("*"));
> }
> })
>
>
> Now the problem is that without a part representing the wildcard at the pathtemplate the *PathTemplateMatcher* doesn't work, and therefore the routing doesn't too.
>
> However when I try to fix the *PathTemplate* the actual matching doesn't work.
>
> I have no problem digging a bit and fixing this issue, I just want to know which class should be the preferred class to fix it.
>
> Enhance the *PathTemplateMatcher#match* to handle the index of c correctly(which is complicated because wrong base in pathTemplates)
>
> or fix *PathTemplate#matches *and *PathTemplate#create*
>
> I would be really happy to get some feedback, right now I feel more like mangling with the PathTemplate because it seems to be
>
> called only at creation/instantiation time instead of the Matcher which is called with every request.
>
>
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>
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