/***************************************
* Copyright (c) Intalio, Inc 2010
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************/
package org.wapama.web.stencilset.impl;
import java.io.IOException;
import java.io.InputStream;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.wapama.web.stencilset.IDiagramStencilSet;
import org.wapama.web.stencilset.IDiagramStencilSetService;
/**
* A servlet to serve stencilsets from the StencilSetService.
* @author Antoine Toulme
*
*/
public class StencilSetServiceServlet extends HttpServlet {
private static final Logger _logger = LoggerFactory.getLogger(StencilSetServiceServlet.class);
private static final long serialVersionUID = -2024110864538877629L;
private IDiagramStencilSetService _pluginService;
public void init(ServletConfig config) throws ServletException {
super.init(config);
_pluginService = new StencilSetServiceImpl(config.getServletContext());
}
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
String requestURI = req.getRequestURI();
// urls should be of type: /designer/stencilset/bpmn2.0
// /designer/stencilset/{name}/{resource}
String[] segments = requestURI.split("/");
if (segments.length < 2) {
throw new IllegalArgumentException("No name provided");
}
String name = segments[3];
IDiagramStencilSet stencilset = _pluginService.findStencilSet(req, name);
if (stencilset == null) {
throw new IllegalArgumentException("No stencilset by the name of " + name);
}
InputStream input = null;
if (segments.length > 4) { //looking for a resource under the stencilset.
String path = requestURI.substring(requestURI.indexOf(segments[3]) + segments[3].length() + 1);
input = stencilset.getResourceContents(path);
} else {
input = stencilset.getContents();
resp.setContentType("application/json");
}
try {
byte[] buffer = new byte[4096];
int read;
while ((read = input.read(buffer)) != -1) {
resp.getOutputStream().write(buffer, 0, read);
}
} catch (IOException e) {
_logger.error(e.getMessage(), e);
} finally {
if (input != null) { try { input.close(); } catch(IOException e) {}};
}
}
}