Multi-tenant on VRaptor

gistfile2.txt

TenantRoutesParser.java

@Component
@ApplicationScoped
public class TenantRoutesParser implements RoutesParser {

	private final RoutesParser parser;

	public TenantRoutesParser(RoutesParser parser) {
		this.parser = parser;
	}

	@Override
	public List<Route> rulesFor(ResourceClass resource) {
		//for controllers that doesnt depend on tenants
		if (resource.getType().isAnnotationPresent(NoTenant.class)) {
			return parser.rulesFor(resource);
		}

		List<Route> rules = new ArrayList<Route>();
		for (Route route : parser.rulesFor(resource)) {
			rules.add(new TenantRoute(route));
		}
		return rules;
	}

	static class TenantRoute implements Route {

		private final Route route;

		public TenantRoute(Route route) {
			this.route = route;
		}

		public ResourceMethod resourceMethod(MutableRequest request, String uri) {
			request.setParameter("tenant.name", extractTenant(uri));
			return route.resourceMethod(request, removeTenant(uri));
		}

		public boolean canHandle(String uri) {
			return route.canHandle(removeTenant(uri));
		}

		public EnumSet<HttpMethod> allowedMethods() {
			return route.allowedMethods();
		}

		public String urlFor(Class<?> type, Method m, Object... params) {
			return tenantPrefix() + route.urlFor(type, m, params);
		}

		public boolean canHandle(Class<?> type, Method method) {
			return route.canHandle(type, method);
		}

		public int getPriority() {
			return route.getPriority();
		}

		public String getOriginalUri() {
			return route.getOriginalUri();
		}

		private String tenantPrefix() {
			//XXX unfortunately this is the only way without changing vraptor's api
			MutableRequest request = VRaptorRequestHolder.currentRequest().getRequest();
			return "/" + request.getParameter("tenant.name");
		}

		private String removeTenant(String uri) {
			return uri.replaceFirst("/[^/]*(?=/)", "");
		}
		private String extractTenant(String uri) {
			return uri.replaceFirst("/([^/]*)(/.*|$)", "$1");
		}

		@Override
		public String toString() {
			return route.toString();
		}
	}
}

vraptor 3.4.0 + guice

Exception in thread "main" java.lang.StackOverflowError
at sun.reflect.Reflection.getClassAccessFlags(Native Method)
at sun.reflect.Reflection.quickCheckMemberAccess(Reflection.java:51)
at java.lang.reflect.Method.invoke(Method.java:576)
at com.google.inject.internal.DelegatingInvocationHandler.invoke(DelegatingInvocationHandler.java:37)
at $Proxy64.rulesFor(Unknown Source)
at com.mytest.tenant.TenantRoutesParser.rulesFor(TenantRoutesParser.java:36)
at sun.reflect.GeneratedMethodAccessor23.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.google.inject.internal.DelegatingInvocationHandler.invoke(DelegatingInvocationHandler.java:37)
at $Proxy64.rulesFor(Unknown Source)
at com.mytest.tenant.TenantRoutesParser.rulesFor(TenantRoutesParser.java:36)
...

o Guice não consegue fazer essa injeção muito bem...

troque o RoutesParser do construtor por PathAnnotationRoutesParser e veja se funciona

Abs

Funcionou :)

Parece não funcionar com a nova versão do VRaptor. Ainda não analisei as soluções etc. mas o metodo getParameter(String s) não existe no MutableRequest.

Desculpa, erro meu. Não estava importanto o servlet-api.

Could not find a suitable constructor in br.com.caelum.vraptor.http.route.PathAnnotationRoutesParser. Classes must have either one (and only one) constructor annotated with @Inject or a zero-argument constructor that is not private.
at br.com.caelum.vraptor.http.route.PathAnnotationRoutesParser.class(PathAnnotationRoutesParser.java:69)
while locating br.com.caelum.vraptor.http.route.PathAnnotationRoutesParser
for parameter 0 at br.com.codery.prescreva.TenantRoutesParser.(TenantRoutesParser.java:25)
at br.com.caelum.vraptor.ioc.guice.GuiceComponentRegistry.bindToConstructor(GuiceComponentRegistry.java:151)