/**
* Copyright 2015 Google Inc. All Rights Reserved.
*
* 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.apphosting.tests.usercode.testservlets;
import java.io.IOException;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.util.List;
import java.util.ArrayList;
import java.util.logging.Logger;
import java.util.logging.Level;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServlet;
import javax.servlet.ServletException;
public class OpenFilesServlet extends HttpServlet {
private static final Logger logger = Logger.getLogger(OpenFilesServlet.class.getName());
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
int numberOfFiles = Integer.valueOf(request.getParameter("num"));
File file = new File(request.getRealPath("WEB-INF/web.xml"));
List<InputStream> streams = new ArrayList<InputStream>(numberOfFiles);
for (int i = 0; i < numberOfFiles; i++) {
try {
streams.add(new FileInputStream(file));
} catch (FileNotFoundException ex) {
logger.log(Level.WARNING, "Could not open " + file + " after " + streams.size(), ex);
break;
}
}
if (streams.size() != numberOfFiles) {
response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
} else {
response.getWriter().println("Opened " + streams.size() + " FD's.");
}
for (InputStream is : streams) {
is.close();
}
}
}