com.bennavetta.appsite.serve.ResourceServlet.java Source code

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Here is the source code for com.bennavetta.appsite.serve.ResourceServlet.java

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/**
 * Copyright 2013 Ben Navetta <ben@bennavetta.com>
 *
 * 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 com.bennavetta.appsite.serve;

import java.io.IOException;
import java.net.URI;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpStatus;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;

import com.bennavetta.appsite.processing.ProcessingController;
import com.bennavetta.appsite.processing.RedirectedRequest;

@SuppressWarnings("serial")
public class ResourceServlet extends HttpServlet {
    private Logger log = LoggerFactory.getLogger(getClass());

    private ProcessingController processor;

    private URI base = URI.create("/res");

    @Override
    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        log.info("Handling request {}", req);
        URI actual = base.relativize(URI.create(req.getRequestURI()));
        try {
            processor.handle(new RedirectedRequest(actual, new HttpServletReq(req)), new HttpServletResp(resp),
                    req.getInputStream(), resp.getOutputStream());
        } catch (Exception e) {
            log.error("Error handling request", e);
            resp.sendError(HttpStatus.INTERNAL_SERVER_ERROR.value());
        }
    }

    @Override
    public void init() throws ServletException {
        WebApplicationContext ctx = WebApplicationContextUtils
                .getRequiredWebApplicationContext(getServletContext());
        processor = ctx.getBean(ProcessingController.class);
    }
}