Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/FileUploadService.java @ 5649:066f3a2f34d6

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Minor refactoring.
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Wed, 10 Apr 2013 13:11:45 +0200
parents 7c8ce0a95a64
children a9243df307b1
rev   line source
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1 package de.intevation.flys.artifacts.services;
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3 import de.intevation.artifacts.CallMeta;
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4 import de.intevation.artifacts.GlobalContext;
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5 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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6 import de.intevation.artifacts.common.utils.FileTools;
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7 import de.intevation.artifacts.common.utils.XMLUtils;
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8 import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator;
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9 import de.intevation.flys.utils.FLYSUtils;
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10
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11 import java.io.File;
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12 import java.io.FileOutputStream;
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13 import java.io.IOException;
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14
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15 import org.apache.commons.codec.binary.Base64;
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16 import org.apache.log4j.Logger;
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17 import org.w3c.dom.Document;
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18 import org.w3c.dom.Element;
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19
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20 /**
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21 * Service that receives XML-packed Shapefile bundles from the client.
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22 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
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23 */
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24 public class FileUploadService extends FLYSService {
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25
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26 /** The logger used in this service.*/
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27 private static Logger logger = Logger.getLogger(FileUploadService.class);
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28
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29 /** XPath that points to the artifact uuid.*/
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30 public static final String XPATH_ARTIFACT_UUID =
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31 "/upload/artifact-uuid/text()";
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32
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33 /** XPath that points to the base64 encoded data.*/
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34 public static final String XPATH_DATA = "/upload/data/text()";
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35
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36 public FileUploadService() {
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37 }
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38
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39 @Override
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40 protected Document doProcess(
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41 Document data,
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42 GlobalContext context,
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43 CallMeta callMeta
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44 ) {
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45 logger.debug("FileUploadService.process");
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46
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47 Document doc = XMLUtils.newDocument();
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48 ElementCreator ec = new ElementCreator(doc, null, null);
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49 Element resp = ec.create("response");
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50 Element status = ec.create("status");
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51 resp.appendChild(status);
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52 doc.appendChild(resp);
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53
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54 String uuid = extractUuid(data);
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55
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56 byte[] fileData = extractData(data);
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57 if (fileData != null) {
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58 try {
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59 String shapePath = FLYSUtils.getXPathString(
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60 FLYSUtils.XPATH_FLOODMAP_SHAPEFILE_DIR);
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61
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62 File artifactDir = FileTools.getDirectory(shapePath, uuid);
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63 FileOutputStream fos =
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64 new FileOutputStream(
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65 new File(artifactDir, "user-rgd.zip"));
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66 try {
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67 fos.write(fileData);
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68
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69 // Write operation successful
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70 status.setTextContent("Upload erfolgreich!"); // TODO: i18n
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71 }
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72 finally {
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73 fos.close();
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74 }
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75 }
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76 catch (IOException ioe) {
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77 logger.warn(ioe, ioe);
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78 status.setTextContent("Upload fehlgeschlagen!");
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79 }
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80 }
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81 else {
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82 logger.debug("No data in uploaded xml.");
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83 status.setTextContent("Upload fehlgeschlagen!");
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84 }
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85
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86 return doc;
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87 }
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88
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89 /**
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90 * Extracts the UUID from the XML document.
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91 * @param data
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92 * @return
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93 */
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94 protected String extractUuid(Document data) {
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95 return XMLUtils.xpathString(
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96 data, XPATH_ARTIFACT_UUID, ArtifactNamespaceContext.INSTANCE);
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97 }
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98
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99 /**
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100 * Extracts the base64 encoded ZIP file from the XML document.
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101 * @param data
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102 * @return
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103 */
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104 protected byte[] extractData(Document data) {
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105 String b64Data = XMLUtils.xpathString(
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106 data, XPATH_DATA, ArtifactNamespaceContext.INSTANCE);
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107
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108 if (b64Data != null && b64Data.length() > 0) {
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109 byte[] fileData = Base64.decodeBase64(b64Data);
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110 return fileData;
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111 }
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112 return null;
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113 }
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114 }
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115 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org