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1   /*
2    * Copyright 2011 The Kuali Foundation
3    *
4    * Licensed under the Educational Community License, Version 1.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    * http://www.opensource.org/licenses/ecl1.php
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package edu.sampleu.kew.krad.controller;
17  
18  import java.io.File;
19  import java.io.FileOutputStream;
20  import java.io.IOException;
21  import java.util.ArrayList;
22  import java.util.Collection;
23  import java.util.List;
24  
25  import javax.servlet.http.HttpServletRequest;
26  import javax.servlet.http.HttpServletResponse;
27  
28  import org.apache.commons.lang.StringUtils;
29  import org.apache.commons.lang.exception.ExceptionUtils;
30  import org.kuali.rice.core.api.CoreApiServiceLocator;
31  import org.kuali.rice.core.api.impex.xml.CompositeXmlDocCollection;
32  import org.kuali.rice.core.api.impex.xml.FileXmlDocCollection;
33  import org.kuali.rice.core.api.impex.xml.XmlDoc;
34  import org.kuali.rice.core.api.impex.xml.XmlDocCollection;
35  import org.kuali.rice.core.api.impex.xml.ZipXmlDocCollection;
36  import org.kuali.rice.krad.util.GlobalVariables;
37  import org.kuali.rice.krad.web.controller.UifControllerBase;
38  import org.kuali.rice.krad.web.form.UifFormBase;
39  import org.springframework.stereotype.Controller;
40  import org.springframework.validation.BindingResult;
41  import org.springframework.web.bind.annotation.ModelAttribute;
42  import org.springframework.web.bind.annotation.RequestMapping;
43  import org.springframework.web.bind.annotation.RequestMethod;
44  import org.springframework.web.multipart.MultipartFile;
45  import org.springframework.web.servlet.ModelAndView;
46  
47  import edu.sampleu.kew.krad.KEWConstants;
48  import edu.sampleu.kew.krad.form.IngesterForm;
49  
50  /**
51   * This is a description of what this class does - Venkat don't forget to fill this in. 
52   * 
53   * @author Kuali Rice Team (rice.collab@kuali.org)
54   *
55   */
56  @Controller
57  @RequestMapping(value = "/ingester")
58  public class IngesterController extends UifControllerBase {
59  
60  	@Override
61      protected IngesterForm createInitialForm(HttpServletRequest request) {
62          return new IngesterForm();
63      }
64  
65  	@Override
66  	@RequestMapping(params = "methodToCall=start")
67  	public ModelAndView start(@ModelAttribute("KualiForm") UifFormBase form, BindingResult result,
68  			HttpServletRequest request, HttpServletResponse response) {
69  
70  		IngesterForm ingesterForm = (IngesterForm)form;
71  		
72  //		checkAuthorization(form,"");
73  		return super.start(ingesterForm, result, request, response);
74  	}
75  
76  	@RequestMapping(method = RequestMethod.POST, params = "methodToCall=upload")
77  	public ModelAndView upload(@ModelAttribute("KualiForm") IngesterForm ingesterForm, BindingResult result,
78  			HttpServletRequest request, HttpServletResponse response) {
79  		
80  		List<File> tempFiles = new ArrayList<File>();
81  		
82  		try {
83  			
84  			List<XmlDocCollection> collections = new ArrayList<XmlDocCollection>();
85  			
86  			for (MultipartFile file : ingesterForm.getFiles())
87  	        {
88  	            if (file == null || StringUtils.isBlank(file.getOriginalFilename())) {
89  					continue;
90  				}
91  	            
92  	            // ok, we have to copy it to *another* file because Struts doesn't give us a File
93  	            // reference (which itself is not a bad abstraction) and XmlDocs based on ZipFile
94  	            // can't be constructed without a file reference.
95  	            FileOutputStream fos = null;
96  	            File temp = null;
97  	            try{
98  	                temp = File.createTempFile("ingester", null);
99  	                tempFiles.add(temp);
100 	                fos = new FileOutputStream(temp);
101 	                fos.write(file.getBytes());
102 	            } catch (IOException ioe) {
103 	            	GlobalVariables.getMessageMap().putErrorForSectionId(KEWConstants.INGESTER_SECTION_ID,KEWConstants.ERROR_INGESTER_COPY_FILE , file.getOriginalFilename(), ExceptionUtils.getFullStackTrace(ioe));
104 	                continue;
105 	            } finally{
106 	                if (fos != null) {
107 						try{
108 						    fos.close();
109 						} catch (IOException ioe){
110 	//					    //LOG.error("Error closing temp file output stream: " + temp, ioe);
111 						}
112 					}
113 	            }
114 	            if (file.getOriginalFilename().toLowerCase().endsWith(".zip"))
115 	            {
116 	                try {
117 	                    collections.add(new ZipXmlDocCollection(temp));
118 	                } catch (IOException ioe) {
119 	                    GlobalVariables.getMessageMap().putErrorForSectionId(KEWConstants.INGESTER_SECTION_ID, KEWConstants.ERROR_INGESTER_LOAD_FILE, file.getOriginalFilename());
120 	                }
121 	            } else if (file.getOriginalFilename().endsWith(".xml")) {
122 	                collections.add(new FileXmlDocCollection(temp, file.getOriginalFilename()));
123 	            } else {
124 	            	GlobalVariables.getMessageMap().putErrorForSectionId(KEWConstants.INGESTER_SECTION_ID, KEWConstants.ERROR_INGESTER_EXTRANEOUS_FILE, file.getOriginalFilename());
125 	            }
126 	        }
127 	
128 	        if (collections.size() == 0) {
129 	            String message = "No valid files to ingest";
130 	            GlobalVariables.getMessageMap().putErrorForSectionId(KEWConstants.INGESTER_SECTION_ID, KEWConstants.ERROR_INGESTER_NO_VALID_FILES);
131 	        } else {
132 	            // wrap in composite collection to make transactional
133 	            CompositeXmlDocCollection compositeCollection = new CompositeXmlDocCollection(collections);
134 	            int totalProcessed = 0;
135 	            List<XmlDocCollection> c = new ArrayList<XmlDocCollection>(1);
136 	            c.add(compositeCollection);
137 	            try {
138 	                Collection<XmlDocCollection> failed = CoreApiServiceLocator.getXmlIngesterService().ingest(c, GlobalVariables.getUserSession().getPrincipalId());
139 	                boolean txFailed = failed.size() > 0;
140 	                if (txFailed) {
141 	                	GlobalVariables.getMessageMap().putErrorForSectionId(KEWConstants.INGESTER_SECTION_ID, KEWConstants.ERROR_INGESTER_FAILED);
142 	                }
143 	                for (XmlDocCollection collection1 : collections)
144 	                {
145 	                    List<? extends XmlDoc> docs = collection1.getXmlDocs();
146 	                    for (XmlDoc doc1 : docs)
147 	                    {
148 	                        if (doc1.isProcessed())
149 	                        {
150 	                            if (!txFailed)
151 	                            {
152 	                                totalProcessed++;
153 	                                GlobalVariables.getMessageMap().putInfoForSectionId(KEWConstants.INGESTER_SECTION_ID, KEWConstants.INFO_INGESTER_SUCCESS, doc1.getName(),doc1.getProcessingMessage());
154 //	                                messages.add("Ingested xml doc: " + doc1.getName() + (doc1.getProcessingMessage() == null ? "" : "\n" + doc1.getProcessingMessage()));
155 	                            } else
156 	                            {GlobalVariables.getMessageMap().putErrorForSectionId(KEWConstants.INGESTER_SECTION_ID, KEWConstants.ERROR_INGESTER_ROLLEDBACK, doc1.getName(),doc1.getProcessingMessage());
157 //	                                messages.add("Rolled back doc: " + doc1.getName() + (doc1.getProcessingMessage() == null ? "" : "\n" + doc1.getProcessingMessage()));
158 	                            }
159 	                        } else
160 	                        {GlobalVariables.getMessageMap().putErrorForSectionId(KEWConstants.INGESTER_SECTION_ID, KEWConstants.ERROR_INGESTER_FAILED_XML, doc1.getName(),doc1.getProcessingMessage());
161 //	                            messages.add("Failed to ingest xml doc: " + doc1.getName() + (doc1.getProcessingMessage() == null ? "" : "\n" + doc1.getProcessingMessage()));
162 	                        }
163 	                    }
164 	                }
165 	            } catch (Exception e) {
166 //	                String message = "Error during ingest";
167 	                //LOG.error(message, e);
168 //	                messages.add(message + ": " + e  + ":\n" + ExceptionUtils.getFullStackTrace(e));
169 	                GlobalVariables.getMessageMap().putErrorForSectionId(KEWConstants.INGESTER_SECTION_ID, KEWConstants.ERROR_INGESTER_DURING_INJECT, ExceptionUtils.getFullStackTrace(e));
170 	            }
171 	            if (totalProcessed == 0) {
172 //	                String message = "No xml docs ingested";
173 	                GlobalVariables.getMessageMap().putErrorForSectionId(KEWConstants.INGESTER_SECTION_ID, KEWConstants.ERROR_INGESTER_NO_XMLS);
174 	            }
175 	        }
176 	    } finally {
177 	        if (tempFiles.size() > 0) {
178 	            for (File tempFile : tempFiles)
179 	            {
180 	                if (!tempFile.delete())
181 	                {
182 	                    //LOG.warn("Error deleting temp file: " + tempFile);
183 	                }
184 	            }
185 	        }
186 	    }
187 		
188 //	    request.setAttribute("messages", messages);
189 	    return getUIFModelAndView(ingesterForm, ingesterForm.getViewId());
190 	}
191 	
192 	@RequestMapping(method = RequestMethod.POST, params = "methodToCall=close")
193 	public ModelAndView close(@ModelAttribute("KualiForm") IngesterForm ingesterForm, BindingResult result,
194 			HttpServletRequest request, HttpServletResponse response) {
195 
196 		return null;
197 	}
198 
199 }