SimpleCounterServlet.java

/* 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.taskqueueexamples;


import com.google.appengine.api.labs.taskqueue.QueueFactory;
import com.google.appengine.api.labs.taskqueue.TaskOptions;

import java.io.IOException;

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

/**
 * Servlet that schedules a counter to be increased.
 */
public class SimpleCounterServlet extends HttpServlet {
  public void doPost(HttpServletRequest req, HttpServletResponse resp)
      throws IOException {

    QueueFactory.getDefaultQueue().add(
        TaskOptions.Builder
          .url("/workers/simplecounter")
          .param("name", "thecounter")
          .param("delta", "1"));

    resp.sendRedirect("/simplecounter.jsp");
  }
}