org.openqa.grid.web.servlet.DisplayHelpServlet Maven / Gradle / Ivy

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/*
Copyright 2011 WebDriver committers
Copyright 2011 Software Freedom Conservancy

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.openqa.grid.web.servlet;

import com.google.common.io.ByteStreams;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
import java.util.logging.Logger;

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

public class DisplayHelpServlet extends HttpServlet {

  private static final long serialVersionUID = 8484071790930378855L;
  private static final Logger log = Logger.getLogger(ConsoleServlet.class.getName());
  private static String coreVersion;
  private static String coreRevision;

  public DisplayHelpServlet() {
    getVersion();
  }


  @Override
  protected void doGet(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    process(request, response);
  }

  @Override
  protected void doPost(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    process(request, response);
  }

  protected void process(HttpServletRequest request, HttpServletResponse response)
      throws IOException {
    response.setContentType("text/html");
    response.setCharacterEncoding("UTF-8");
    response.setStatus(200);

    StringBuilder builder = new StringBuilder();

    builder.append("");
    builder.append("");

    builder.append("Selenium Grid2.0 help");


    builder.append("");

    builder.append("");
    builder.append("You are using grid ").append(coreVersion).append(coreRevision);
    builder
        .append("
Find help on the official selenium wiki : more help here");
    builder.append("
default monitoring page : console");
    
    builder.append("");
    builder.append("");

    InputStream in = new ByteArrayInputStream(builder.toString().getBytes("UTF-8"));
    try {
      ByteStreams.copy(in, response.getOutputStream());
    } finally {
      in.close();
      response.getOutputStream().close();
    }
  }

  private void getVersion() {
    final Properties p = new Properties();

    InputStream stream =
        Thread.currentThread().getContextClassLoader().getResourceAsStream("VERSION.txt");
    if (stream == null) {
      log.severe("Couldn't determine version number");
      return;
    }
    try {
      p.load(stream);
    } catch (IOException e) {
      log.severe("Cannot load version from VERSION.txt" + e.getMessage());
    }
    coreVersion = p.getProperty("selenium.core.version");
    coreRevision = p.getProperty("selenium.core.revision");
    if (coreVersion == null) {
      log.severe("Cannot load selenium.core.version from VERSION.txt");
    }
  }
}