/*
* Copyright 2010 JBoss Inc
*
* 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 org.jbpm.designer.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.jbpm.designer.util.ConfigurationProvider;
import org.jbpm.designer.web.stencilset.IDiagramStencilSet;
import org.jbpm.designer.web.stencilset.IDiagramStencilSetService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* 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 String defaultName;
private IDiagramStencilSetService _pluginService;
public void init(ServletConfig config) throws ServletException {
super.init(config);
defaultName = config.getInitParameter("defaultName");
_pluginService = new StencilSetServiceImpl(config.getServletContext());
}
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
String requestURI = req.getRequestURI().replaceFirst(req.getContextPath(), "");
// urls should be of type: stencilset/bpmn2.0
// stencilset/{name}/{resource}
String[] segments = requestURI.split("/");
if (segments.length < 2) {
throw new IllegalArgumentException("No name provided");
}
String name = null;
try {
name = segments[2];
} catch (Exception e) {
name = segments[segments.length-1];
}
if(name.length() < 1) {
name = defaultName;
}
IDiagramStencilSet stencilset = _pluginService.findStencilSet(req, name);
if (stencilset == null) {
throw new IllegalArgumentException("No stencilset by the name of " + name);
}
String applicationContext = ConfigurationProvider.getInstance().getDesignerContext().replaceAll("/", "");
InputStream input = null;
if (segments.length > 4) {
//looking for a resource under the stencilset.
String path = requestURI.substring(requestURI.indexOf(segments[2]) + segments[2].length() + 1);
if(path.indexOf(applicationContext + "/stencilset/org.jbpm.designer.jBPMDesigner/stencilsets/bpmn2.0jbpm/bpmn2.0jbpm.json") >= 0) {
path = applicationContext + "/stencilsets/bpmn2.0jbpm/bpmn2.0jbpm.json";
}
if(path.indexOf(applicationContext + "/stencilset/bpmn2.0jbpm/stencilset/org.jbpm.designer.jBPMDesigner/stencilsets/bpmn2.0jbpm/bpmn2.0jbpm.json") >= 0) {
path = applicationContext + "/stencilsets/bpmn2.0jbpm/bpmn2.0jbpm.json";
}
if(path.indexOf(applicationContext + "/stencilset/" + applicationContext + "/stencilsets/bpmn2.0/") >= 0) {
path = path.substring((applicationContext + "/stencilset/" + applicationContext + "/stencilsets/bpmn2.0/").length(), path.length());
}
if(path.indexOf("stencilset//" + applicationContext + "/stencilsets/bpmn2.0jbpm/") >= 0) {
path = path.substring(("stencilset//" + applicationContext + "/stencilsets/bpmn2.0jbpm/").length(), path.length());
}
if(path.indexOf(applicationContext + "/stencilset/" + applicationContext + "/stencilsets/bpmn2.0jbpm/") >= 0) {
path = path.substring((applicationContext + "/stencilset/" +applicationContext + "/stencilsets/bpmn2.0jbpm/").length(), path.length());
}
if(path.indexOf("bpmn2.0.json/") >= 0) {
path = path.substring("bpmn2.0.json".length(), path.length());
}
if(path.indexOf("bpmn2.0jbpm.json/") >= 0) {
path = path.substring("bpmn2.0jbpm.json".length(), path.length());
}
if(path.startsWith("/bpmn2.0jbpm/")) {
path = path.substring("/bpmn2.0jbpm/".length(), path.length());
}
if(path.startsWith("stencilsets/bpmn2.0jbpm/")) {
path = path.substring("stencilsets/bpmn2.0jbpm/".length(), path.length());
}
if(path.startsWith("2.0jbpm/bpmn2.0jbpm.json/")) {
path = path.substring("2.0jbpm/bpmn2.0jbpm.json/".length(), path.length());
}
input = stencilset.getResourceContents(path);
if(requestURI.endsWith(".svg")) {
resp.setContentType("text/xml");
} else if(requestURI.endsWith(".png")) {
resp.setContentType("image/png");
} else {
//default to not setting
}
} 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) {}};
}
}
}