/* The contents of this file are subject to the license and copyright terms
* detailed in the license directory at the root of the source tree (also
* available online at http://fedora-commons.org/license/).
*/
package org.fcrepo.server.management;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItemIterator;
import org.apache.commons.fileupload.FileItemStream;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.fcrepo.common.Constants;
import org.fcrepo.server.Context;
import org.fcrepo.server.ReadOnlyContext;
import org.fcrepo.server.Server;
import org.fcrepo.server.errors.InitializationException;
import org.fcrepo.server.errors.authorization.AuthzException;
import org.fcrepo.server.errors.servletExceptionExtensions.RootException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Accepts and HTTP Multipart POST of a file from an authorized user, and if
* successful, returns a status of "201 Created" and a text/plain response with
* a single line containing an opaque identifier that can be used to later
* submit to the appropriate API-M method.
* <p>
* If it fails it will return a non-201 status code with a text/plain
* explanation. The submitted file must be named "file".
*
* @author Chris Wilper
*/
public class UploadServlet
extends SpringManagementServlet {
private static final Logger logger =
LoggerFactory.getLogger(UploadServlet.class);
private static final long serialVersionUID = 1L;
/**
* The servlet entry point. http://host:port/fedora/management/upload
*/
@Override
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
Context context =
ReadOnlyContext.getContext(Constants.HTTP_REQUEST.REST.uri,
request);
try {
// Create a new file upload handler
ServletFileUpload upload = new ServletFileUpload();
// Parse the request, looking for "file"
InputStream in = null;
FileItemIterator iter = upload.getItemIterator(request);
while (in == null && iter.hasNext()) {
FileItemStream item = iter.next();
logger.info("Got next item: isFormField=" + item.isFormField() + " fieldName=" + item.getFieldName());
if (!item.isFormField() && item.getFieldName().equals("file")) {
in = item.openStream();
}
}
if (in == null) {
sendResponse(HttpServletResponse.SC_BAD_REQUEST,
"No data sent.",
response);
} else {
sendResponse(HttpServletResponse.SC_CREATED,
m_management.putTempStream(context, in),
response);
}
} catch (AuthzException ae) {
throw RootException.getServletException(ae,
request,
"Upload",
new String[0]);
} catch (Exception e) {
e.printStackTrace();
sendResponse(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, e
.getClass().getName()
+ ": " + e.getMessage(), response);
}
}
@Override
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException {
sendResponse(HttpServletResponse.SC_OK,
"Client must use HTTP Multipart POST",
response);
}
public void sendResponse(int status,
String message,
HttpServletResponse response) {
try {
if (status == HttpServletResponse.SC_CREATED) {
logger.info("Successful upload, id=" + message);
} else {
logger.error("Failed upload: " + message);
}
response.setStatus(status);
response.setContentType("text/plain");
PrintWriter w = response.getWriter();
w.println(message);
} catch (Exception e) {
logger.error("Unable to send response", e);
}
}
}