org.springframework.boot.devtools.remote.server.DispatcherFilter 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 javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.http.server.ServletServerHttpRequest;
import org.springframework.http.server.ServletServerHttpResponse;
import org.springframework.util.Assert;
/**
* Servlet filter providing integration with the remote server {@link Dispatcher}.
*
* @author Phillip Webb
* @author Rob Winch
* @since 1.3.0
*/
public class DispatcherFilter implements Filter {
private final Dispatcher dispatcher;
public DispatcherFilter(Dispatcher dispatcher) {
Assert.notNull(dispatcher, "Dispatcher must not be null");
this.dispatcher = dispatcher;
}
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
if (request instanceof HttpServletRequest
&& response instanceof HttpServletResponse) {
doFilter((HttpServletRequest) request, (HttpServletResponse) response, chain);
}
else {
chain.doFilter(request, response);
}
}
private void doFilter(HttpServletRequest request, HttpServletResponse response,
FilterChain chain) throws IOException, ServletException {
ServerHttpRequest serverRequest = new ServletServerHttpRequest(request);
ServerHttpResponse serverResponse = new ServletServerHttpResponse(response);
if (!this.dispatcher.handle(serverRequest, serverResponse)) {
chain.doFilter(request, response);
}
}
@Override
public void destroy() {
}
}