/*
* Copyright 2010 Manuel Carrasco Moñino. (manolo at apache/org)
* http://code.google.com/p/gwtupload
*
* 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 gwtupload.server.gae;
import static gwtupload.shared.UConsts.*;
import gwtupload.server.UploadAction;
import gwtupload.server.exceptions.UploadActionException;
import gwtupload.server.gae.FilesApiFileItemFactory.FilesAPIFileItem;
import java.io.IOException;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import com.google.appengine.api.blobstore.BlobKey;
/**
* Upload servlet which uses the FilesApiFileItemFactory using the GAE File API.
*
* To use this servlet you need:
*
* Add these lines to your web.xml
*
* <pre>
<servlet>
<servlet-class>gwtupload.server.gae.FilesApiUploadAction</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>uploadServlet</servlet-name>
<url-pattern>*.gupld</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>uploadServlet</servlet-name>
<url-pattern>/upload</url-pattern>
</servlet-mapping>
</pre>
*
* Enable Session in your appengine-web.xml
*
* <pre>
<sessions-enabled>true</sessions-enabled>
</pre>
*
* You can get the blob key in server client side using this code
*
* <pre>
uploader.addOnFinishUploadHandler(new OnFinishUploaderHandler() {
public void onFinish(IUploader uploader) {
if (uploader.getStatus() == Status.SUCCESS) {
String url = uploader.getServletPath() + "?blob-key=" + uploader.getServerInfo().message;
}
}
});
</pre>
*
* @author Vyacheslav Sokolov
* @author Manuel Carrasco
*/
public class FilesApiUploadAction extends UploadAction {
private static final long serialVersionUID = 3683112300714613746L;
@Override
public boolean isAppEngine() {
return true;
}
@Override
public String executeAction(HttpServletRequest request,
List<FileItem> sessionFiles) throws UploadActionException {
String ret = "";
for (FileItem i : sessionFiles) {
if (!i.isFormField()) {
ret += (ret.isEmpty() ? "" : " ") + ((FilesAPIFileItem) i).getKey().getKeyString();
logger.info("Received new file, stored in blobstore with the key: " + ret);
}
}
return ret;
}
@Override
protected FileItemFactory getFileItemFactory(long requestSize) {
return new FilesApiFileItemFactory();
}
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException {
String bkey = request.getParameter(PARAM_BLOBKEY);
if (bkey != null) {
logger.info("Serving a blobstore file with the key:" + bkey);
FilesAPIFileItem.getBlobstoreService()
.serve(new BlobKey(bkey), response);
} else {
super.doGet(request, response);
}
}
}