org.springframework.boot.devtools.remote.server.Dispatcher Maven / Gradle / Ivy
/*
* Copyright 2012-2015 the original author or authors.
*
* 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 org.springframework.boot.devtools.remote.server;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.springframework.core.annotation.AnnotationAwareOrderComparator;
import org.springframework.http.HttpStatus;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.util.Assert;
/**
* Dispatcher used to route incoming remote server requests to a {@link Handler}. Similar
* to {@code DispatchServlet} in Spring MVC but separate to ensure that remote support can
* be used regardless of any web framework.
*
* @author Phillip Webb
* @since 1.3.0
* @see HandlerMapper
*/
public class Dispatcher {
private final AccessManager accessManager;
private final List mappers;
public Dispatcher(AccessManager accessManager, Collection mappers) {
Assert.notNull(accessManager, "AccessManager must not be null");
Assert.notNull(mappers, "Mappers must not be null");
this.accessManager = accessManager;
this.mappers = new ArrayList(mappers);
AnnotationAwareOrderComparator.sort(this.mappers);
}
/**
* Dispatch the specified request to an appropriate {@link Handler}.
* @param request the request
* @param response the response
* @return {@code true} if the request was dispatched
* @throws IOException in case of I/O errors
*/
public boolean handle(ServerHttpRequest request, ServerHttpResponse response)
throws IOException {
for (HandlerMapper mapper : this.mappers) {
Handler handler = mapper.getHandler(request);
if (handler != null) {
handle(handler, request, response);
return true;
}
}
return false;
}
private void handle(Handler handler, ServerHttpRequest request,
ServerHttpResponse response) throws IOException {
if (!this.accessManager.isAllowed(request)) {
response.setStatusCode(HttpStatus.FORBIDDEN);
return;
}
handler.handle(request, response);
}
}