/*
* JBoss, Home of Professional Open Source.
* Copyright 2013, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.test.capedwarf.images.support;
import java.io.IOException;
import java.nio.channels.Channels;
import java.nio.channels.ReadableByteChannel;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.google.appengine.api.blobstore.BlobKey;
import com.google.appengine.api.files.AppEngineFile;
import com.google.appengine.api.files.FileService;
import com.google.appengine.api.files.FileServiceFactory;
import com.google.appengine.api.files.FileWriteChannel;
import com.google.appengine.api.images.ImagesService;
import com.google.appengine.api.images.ImagesServiceFactory;
import com.google.appengine.api.images.ServingUrlOptions;
import org.jboss.capedwarf.common.io.IOUtils;
/**
* @author <a href="mailto:mluksa@redhat.com">Marko Luksa</a>
*/
public class UrlServingServlet extends HttpServlet {
private BlobKey blobKey;
private ImagesService imagesService = ImagesServiceFactory.getImagesService();
@Override
public void init(ServletConfig config) throws ServletException {
super.init(config);
try {
FileService fileService = FileServiceFactory.getFileService();
AppEngineFile file = fileService.createNewBlobFile("image/png");
FileWriteChannel channel = fileService.openWriteChannel(file, true);
try {
ReadableByteChannel in = Channels.newChannel(UrlServingServlet.class.getResourceAsStream("/capedwarf.png"));
try {
IOUtils.copy(in, channel);
} finally {
in.close();
}
} finally {
channel.closeFinally();
}
blobKey = fileService.getBlobKey(file);
} catch (IOException e) {
throw new ServletException(e);
}
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
if (req.getRequestURI().endsWith("getImageUrl")) {
String number = req.getParameter("image");
String url = null;
ServingUrlOptions options = ServingUrlOptions.Builder.withBlobKey(blobKey);
if ("basic".equals(number)) {
url = imagesService.getServingUrl(options);
} else if ("resized".equals(number)) {
url = imagesService.getServingUrl(options.imageSize(100));
} else if ("cropped".equals(number)) {
url = imagesService.getServingUrl(options.imageSize(100).crop(true));
}
resp.getWriter().print(url);
} else if (req.getRequestURI().endsWith("deleteServingUrl")) {
imagesService.deleteServingUrl(blobKey);
} else {
throw new RuntimeException("Don't know what to do");
}
}
}