Workflow Checkpoint:

- Process deploy/isDeployed/undeploy implemented in Workflow Service
- Servlet implemented to support jBPM Process Designer deployment (using above service) : mapped to /alfresco/jbpm/deployprocess URL
- Workflow deployer bootstrap bean (for once- only loading of process definitions at bootstrap)
- Initial cut of Review & Approve process definition & Task definitions (bootstrapped)

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@3477 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/web/app/servlet/JBPMDeployProcessServlet.java

@@ -0,0 +1,145 @@
+/*
+ * Copyright (C) 2005 Alfresco, Inc.
+ *
+ * Licensed under the Mozilla Public License version 1.1 
+ * with a permitted attribution clause. You may obtain a
+ * copy of the License at
+ *
+ *   http://www.alfresco.org/legal/license.txt
+ *
+ * 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.alfresco.web.app.servlet;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Iterator;
+import java.util.List;
+
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.alfresco.repo.content.MimetypeMap;
+import org.alfresco.repo.workflow.WorkflowDefinitionComponent;
+import org.alfresco.service.cmr.workflow.WorkflowDefinition;
+import org.alfresco.service.cmr.workflow.WorkflowException;
+import org.apache.commons.fileupload.DiskFileUpload;
+import org.apache.commons.fileupload.FileItem;
+import org.apache.commons.fileupload.FileUpload;
+import org.apache.commons.fileupload.FileUploadException;
+import org.springframework.web.context.WebApplicationContext;
+import org.springframework.web.context.support.WebApplicationContextUtils;
+
+
+/**
+ * Servlet for handling process deployments from jBPM process designer.
+ * 
+ * @author davidc
+ */
+public class JBPMDeployProcessServlet extends HttpServlet
+{
+    private static final long serialVersionUID = 8002539291245090187L;
+
+
+    /* (non-Javadoc)
+     * @see javax.servlet.http.HttpServlet#service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
+     */
+    public void service(HttpServletRequest request, HttpServletResponse response)
+        throws IOException
+    {
+        try
+        {
+            response.setContentType("text/html");
+            InputStream deploymentArchive = getDeploymentArchive(request);
+            WorkflowDefinition workflowDef = deployArchive(deploymentArchive);
+            response.getWriter().println("Deployed archive " + workflowDef.name + " successfully");
+        }
+        catch(IOException e)
+        {
+            // NOTE: according to original jBPM deployment servlet
+            response.getWriter().println("IOException");
+        }
+        catch(FileUploadException e)
+        {
+            // NOTE: according to original jBPM deployment servlet
+            response.getWriter().println("FileUploadException");
+        }
+    }
+
+    
+    /**
+     * Retrieve the JBPM Process Designer deployment archive from the request
+     * 
+     * @param request  the request
+     * @return  the input stream onto the deployment archive
+     * @throws WorkflowException
+     * @throws FileUploadException
+     * @throws IOException
+     */
+    private InputStream getDeploymentArchive(HttpServletRequest request)
+        throws FileUploadException, IOException
+    {
+        if (!FileUpload.isMultipartContent(request))
+        {
+            throw new FileUploadException("Not a multipart request");
+        }
+        
+        GPDUpload fileUpload = new GPDUpload();
+        List list = fileUpload.parseRequest(request);
+        Iterator iterator = list.iterator();
+        if (!iterator.hasNext())
+        {
+            throw new FileUploadException("No process file in the request");
+        }
+     
+        FileItem fileItem = (FileItem) iterator.next();
+        if (fileItem.getContentType().indexOf("application/x-zip-compressed") == -1)
+        {
+            throw new FileUploadException("Not a process archive");
+        }
+        
+        return fileItem.getInputStream();
+    }
+    
+    
+    /**
+     * Deploy the jBPM process archive to the Alfresco Repository
+     * 
+     * @param deploymentArchive  the archive to deploy
+     * @return  the deployed workflow definition
+     */
+    private WorkflowDefinition deployArchive(InputStream deploymentArchive)
+    {
+        // NOTE: retrieve jbpm engine directly as this servlet only serves JBPM process designer deployments
+        WebApplicationContext wc = WebApplicationContextUtils.getRequiredWebApplicationContext(getServletContext());
+        WorkflowDefinitionComponent jbpmEngine = (WorkflowDefinitionComponent)wc.getBean("jbpm_engine");
+        return jbpmEngine.deployDefinition(deploymentArchive, MimetypeMap.MIMETYPE_ZIP);
+    }
+
+
+    /**
+     * NOTE: Workaround...
+     * 
+     * The JBPM process designer (as of 3.1.2) issues a request with a multi-part line
+     * delimited by ",".  It should be ":" according to the HTTP specification which
+     * the commons file-upload is adhering to.
+     * 
+     * @author davidc
+     */
+    @SuppressWarnings("deprecation")
+    private class GPDUpload extends DiskFileUpload
+    {
+        @Override
+        protected byte[] getBoundary(String contentType)
+        {
+            return super.getBoundary(contentType.replace(",", ";"));
+        }
+    }
+    
+}