
net.codestory.http.routes.RouteCollection Maven / Gradle / Ivy
/**
* Copyright (C) 2013 [email protected]
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
package net.codestory.http.routes;
import static net.codestory.http.UriParser.*;
import static net.codestory.http.routes.Match.*;
import java.io.*;
import java.lang.reflect.*;
import java.util.*;
import net.codestory.http.*;
import net.codestory.http.annotations.*;
import net.codestory.http.filters.Filter;
import com.sun.net.httpserver.*;
public class RouteCollection implements Routes {
private final Deque routes;
private final Deque filters;
public RouteCollection() {
this.routes = new LinkedList<>();
this.filters = new LinkedList<>();
}
@Override
public void add(Object resource) {
add("", resource);
}
@Override
public void add(String urlPrefix, Object resource) {
// Hack to support Mockito Spies
Class> type = resource.getClass();
if (resource.getClass().getName().contains("EnhancerByMockito")) {
type = type.getSuperclass();
}
for (Method method : type.getMethods()) {
int parameterCount = method.getParameterCount();
for (Get get : method.getDeclaredAnnotationsByType(Get.class)) {
String uriPattern = urlPrefix + get.value();
add("GET", checkParametersCount(uriPattern, parameterCount), new ReflectionRoute(resource, method));
}
for (Post post : method.getDeclaredAnnotationsByType(Post.class)) {
String uriPattern = urlPrefix + post.value();
add("POST", checkParametersCount(uriPattern, parameterCount), new ReflectionRoute(resource, method));
}
}
}
@Override
public void get(String uriPattern, Payload payload) {
get(uriPattern, () -> payload);
}
@Override
public void get(String uriPattern, NoParamRoute noParamRoute) {
add("GET", checkParametersCount(uriPattern, 0), noParamRoute);
}
@Override
public void get(String uriPattern, OneParamRoute route) {
add("GET", checkParametersCount(uriPattern, 1), route);
}
@Override
public void get(String uriPattern, TwoParamsRoute route) {
add("GET", checkParametersCount(uriPattern, 2), route);
}
@Override
public void get(String uriPattern, ThreeParamsRoute route) {
add("GET", checkParametersCount(uriPattern, 3), route);
}
@Override
public void get(String uriPattern, FourParamsRoute route) {
add("GET", checkParametersCount(uriPattern, 4), route);
}
@Override
public void post(String uriPattern, NoParamRoute noParamRoute) {
add("POST", checkParametersCount(uriPattern, 0), noParamRoute);
}
@Override
public void post(String uriPattern, OneParamRoute route) {
add("POST", checkParametersCount(uriPattern, 1), route);
}
@Override
public void post(String uriPattern, TwoParamsRoute route) {
add("POST", checkParametersCount(uriPattern, 2), route);
}
@Override
public void post(String uriPattern, ThreeParamsRoute route) {
add("POST", checkParametersCount(uriPattern, 3), route);
}
@Override
public void post(String uriPattern, FourParamsRoute route) {
add("POST", checkParametersCount(uriPattern, 4), route);
}
@Override
public void filter(Filter filter) {
filters.addLast(filter);
}
public void reset() {
routes.clear();
filters.clear();
}
private void add(String method, String uriPattern, AnyRoute route) {
routes.addFirst(new RouteWrapper(method, uriPattern, route));
}
public Match apply(HttpExchange exchange) throws IOException {
String uri = exchange.getRequestURI().getPath();
for (Filter filter : filters) {
if (filter.apply(uri, exchange)) {
return OK;
}
}
Match bestMatch = WRONG_URL;
List allRoutes = new ArrayList<>();
allRoutes.addAll(routes);
allRoutes.add(new StaticRoute());
for (Route route : allRoutes) {
Match match = route.apply(uri, exchange);
if (match == OK) {
return OK;
}
if (match.isBetter(bestMatch)) {
bestMatch = match;
}
}
return bestMatch;
}
private static String checkParametersCount(String uriPattern, int count) {
if (paramsCount(uriPattern) != count) {
throw new IllegalArgumentException("Expected " + count + " parameters in " + uriPattern);
}
return uriPattern;
}
}
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