/*
* Copyright 2012 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.android.apps.iosched.gcm.server;
import java.util.Enumeration;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Skeleton class for all servlets in this package.
*/
abstract class BaseServlet extends HttpServlet {
protected final Logger logger = Logger.getLogger(getClass().getSimpleName());
protected String getParameter(HttpServletRequest req, String parameter)
throws ServletException {
String value = req.getParameter(parameter);
if (value == null || value.trim().isEmpty()) {
StringBuilder parameters = new StringBuilder();
@SuppressWarnings("unchecked")
Enumeration<String> names = req.getParameterNames();
while (names.hasMoreElements()) {
String name = names.nextElement();
String param = req.getParameter(name);
parameters.append(name).append("=").append(param).append("\n");
}
logger.info("parameters: " + parameters);
throw new ServletException("Parameter " + parameter + " not found");
}
return value.trim();
}
protected void setSuccess(HttpServletResponse resp) {
resp.setStatus(HttpServletResponse.SC_OK);
resp.setContentType("text/plain");
resp.setContentLength(0);
}
}