mecha.http.servlets.ProxyServlet.java Source code

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Here is the source code for mecha.http.servlets.ProxyServlet.java

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/*
 * This file is provided to you 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.
 * 
 * (C) 2013 John Muellerleile @jrecursive
 *
 */

package mecha.http.servlets;

import java.util.*;
import java.util.logging.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.*;
import java.io.*;

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

import org.apache.commons.lang.*;

import mecha.Mecha;
import mecha.vm.*;
import mecha.client.*;
import mecha.json.*;
import mecha.monitoring.*;
import mecha.util.*;

@SuppressWarnings("serial")
public class ProxyServlet extends HttpServlet {
    final private static Logger log = Logger.getLogger(ProxyServlet.class.getName());

    public ProxyServlet() {
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        try {
            response.setCharacterEncoding("UTF-8");
            response.setHeader("Access-Control-Allow-Origin", "*");

            Map<String, String[]> requestParamMap = request.getParameterMap();
            String u = requestParamMap.get("u")[0];
            response.getWriter().print(HTTPUtils.fetch(u));
        } catch (Exception ex) {
            Mecha.getMonitoring().error("mecha.http.servlets.macro-servlet", ex);
            ex.printStackTrace();
        }
    }

    private void writeError(HttpServletResponse response, String errorMsg) throws Exception {
        response.setContentType("text/html");
        response.setStatus(HttpServletResponse.SC_OK);
        response.getWriter().println("<h1>" + errorMsg + "</h1>");
    }
}