nextapp.echo.filetransfer.receiver.UploadMonitor Maven / Gradle / Ivy
/*
* This file is part of the Echo File Transfer Library.
* Copyright (C) 2002-2009 NextApp, Inc.
*
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*/
package nextapp.echo.filetransfer.receiver;
import java.io.IOException;
import javax.servlet.http.HttpServletRequest;
import nextapp.echo.filetransfer.model.UploadProcess;
/**
* Handler for upload monitoring requests. Used by servlet and Echo-service based implementations.
*/
public class UploadMonitor {
/**
* Generates an XML response string.
*
* @param contentXml the contents of the document (inside the "m" element).
*/
private static String createResponse(String contentXml) {
return "" + contentXml + " ";
}
/**
* Processes an upload monitor/control request.
*
* @param request the incoming HTTP request
* @return an XML document, as a String, to be rendered in the response
* @throws IOException
*/
public static String processRequest(HttpServletRequest request)
throws IOException {
String processId = request.getParameter("pid");
UploadProcess uploadProcess = UploadProcessManager.get(request, processId, false);
if (uploadProcess == null) {
return createResponse("");
}
String command = request.getParameter("command");
if ("cancel".equals(command)) {
uploadProcess.cancel();
}
if (uploadProcess.isCanceled()) {
return createResponse("");
} else if (uploadProcess.isComplete()) {
return createResponse("");
} else {
return createResponse("