Mercurial > lada > lada-server

annotate src/main/java/de/intevation/lada/rest/LAFExportService.java @ 366:567ce7697fc7 0.5

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Code documentation.
author Raimund Renkert <rrenkert@intevation.de>
date Tue, 10 Sep 2013 15:55:54 +0200
parents 1feba681ffee
children 183f8116d9a6
rev   line source
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1 package de.intevation.lada.rest;
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2
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3 import java.io.InputStream;
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4 import java.util.ArrayList;
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5 import java.util.List;
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6
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7 import javax.enterprise.context.RequestScoped;
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8 import javax.inject.Inject;
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9 import javax.inject.Named;
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10 import javax.ws.rs.Consumes;
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11 import javax.ws.rs.POST;
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12 import javax.ws.rs.Path;
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13 import javax.ws.rs.Produces;
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14 import javax.ws.rs.core.Context;
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15 import javax.ws.rs.core.HttpHeaders;
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16 import javax.ws.rs.core.Response;
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17 import javax.ws.rs.core.Response.ResponseBuilder;
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18 import javax.ws.rs.core.Response.Status;
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19
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20 import de.intevation.lada.auth.Authentication;
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21 import de.intevation.lada.auth.AuthenticationException;
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22 import de.intevation.lada.auth.AuthenticationResponse;
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23 import de.intevation.lada.auth.Authorization;
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24 import de.intevation.lada.data.exporter.Exporter;
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25
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26 /**
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27 * This class produces a RESTful service to export a LAF file.
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28 *
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29 * @author <a href="mailto:rrenkert@intevation.de">Raimund Renkert</a>
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30 */
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31 @Path("/export")
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32 @RequestScoped
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33 public class LAFExportService
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34 {
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35 @Inject
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36 @Named("ldapauth")
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37 private Authentication authentication;
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38
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39 @Inject
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40 @Named("dataauthorization")
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41 private Authorization authorization;
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42
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43 @Inject
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44 @Named("lafexporter")
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45 private Exporter exporter;
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46
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47 /**
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48 * Export LProbe objects.
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49 *
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50 * The service takes form url encoded POST data containing probe ids and
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51 * exports the LProbe objects filtered by these ids.
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52 *
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53 * @param proben Form data (url encoded) string with probe ids.
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54 * @param header The HTTP header containing authorization information.
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55 * @return The LAF file to export.
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56 */
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57 @POST
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58 @Path("/laf")
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59 @Consumes("application/x-www-form-urlencoded")
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60 @Produces("text/plain")
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61 public Response download(
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62 String proben,
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63 @Context HttpHeaders header
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64 ) {
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65 try {
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66 String[] raw = proben.split("&");
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67 List<String> probeIds = new ArrayList<String>();
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68 for (int i = 0; i < raw.length; i++) {
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69 String[] probe = raw[i].split("=");
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70 probeIds.add(probe[1]);
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71 }
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72 String fileName = "export.laf";
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73 AuthenticationResponse auth = authentication.authorizedGroups(header);
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74 if (!authentication.isAuthorizedUser(header)) {
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75 ResponseBuilder response = Response.status(Status.FORBIDDEN);
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76 return response.build();
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77 }
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78 for (int i = 0; i < probeIds.size(); i++) {
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79 String probeId = probeIds.get(i);
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80 if (!authentication.hasAccess(header, probeId) &&
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81 !authorization.isReadOnly(probeId)) {
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82 probeIds.remove(probeId);
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83 }
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84 }
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85 InputStream exported = exporter.export(probeIds, auth);
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86 ResponseBuilder response = Response.ok((Object)exported);
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87 response.header(
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88 "Content-Disposition",
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89 "attachment; filename=\"" + fileName + "\"");
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90 return response.build();
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91
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92 }
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93 catch(AuthenticationException ae) {
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94 ResponseBuilder response = Response.status(Status.FORBIDDEN);
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95 return response.build();
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96 }
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97 }
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98 }
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