/* Copyright (c) 2009 Google Inc.
*
* 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.google.appengine.demos.shardedcounter.v1;
import java.io.IOException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet provides the HTML for the counter web page.
*
* @author j.s@google.com (Jeff Scudder)
*/
public class CounterPage extends HttpServlet {
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws IOException {
resp.getWriter().println("<html>");
resp.getWriter().println(" <body>");
Counter counter = new Counter();
resp.getWriter().println(" <p>Current count: " + counter.getCount()
+ "</p>");
resp.getWriter().println("<form action=\"/v1\" method=\"post\">");
resp.getWriter().println(
" <div><input type=\"submit\" value=\"+1\" /></div>");
resp.getWriter().println("</form></body></html>");
}
public void doPost(HttpServletRequest req, HttpServletResponse resp)
throws IOException {
Counter counter = new Counter();
// Add a shard for now, since we can't yet increment.
counter.addShard();
doGet(req, resp);
}
}