Mercurial > dive4elements > river
annotate flys-client/src/main/java/de/intevation/flys/client/server/AdvanceServiceImpl.java @ 3497:88feb3347aa5
Implement a ProxyServlet
Implement a ProxyServlet to be able to restrict the access to the
mapserver too. All queries to the provided map services should go throught
this new ProxyServlet. Currently the ProxyServlet can only handle HTTP GET
requests.
flys-client/trunk@5221 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Bjoern Ricks <bjoern.ricks@intevation.de> |
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date | Thu, 16 Aug 2012 14:42:36 +0000 |
parents | f2039d030b5e |
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1 package de.intevation.flys.client.server; |
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2 |
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3 import org.w3c.dom.Document; |
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4 |
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5 import org.apache.log4j.Logger; |
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6 |
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7 import com.google.gwt.user.server.rpc.RemoteServiceServlet; |
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8 |
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9 import de.intevation.artifacts.common.ArtifactNamespaceContext; |
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10 import de.intevation.artifacts.common.utils.ClientProtocolUtils; |
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11 import de.intevation.artifacts.common.utils.XMLUtils; |
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12 |
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13 import de.intevation.artifacts.httpclient.exceptions.ConnectionException; |
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14 import de.intevation.artifacts.httpclient.http.HttpClient; |
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15 import de.intevation.artifacts.httpclient.http.HttpClientImpl; |
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16 import de.intevation.artifacts.httpclient.http.response.DocumentResponseHandler; |
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17 |
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18 import de.intevation.flys.client.shared.exceptions.ServerException; |
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19 import de.intevation.flys.client.shared.model.Artifact; |
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20 import de.intevation.flys.client.client.services.AdvanceService; |
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21 |
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22 |
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23 /** |
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24 * This interface provides artifact specific operation ADVANCE. |
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25 * |
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26 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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27 */ |
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28 public class AdvanceServiceImpl |
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29 extends RemoteServiceServlet |
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30 implements AdvanceService |
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31 { |
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32 private static final Logger logger = Logger.getLogger(AdvanceService.class); |
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33 |
32
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34 public static final String XPATH_RESULT = "/art:result/text()"; |
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35 |
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36 public static final String OPERATION_FAILURE = "FAILED"; |
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37 |
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38 public static final String ERROR_ADVANCE_ARTIFACT = "error_advance_artifact"; |
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39 |
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40 |
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41 public Artifact advance( |
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42 String locale, |
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43 Artifact artifact, |
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44 String target) |
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45 throws ServerException |
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46 { |
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47 logger.info("AdvanceServiceImpl.advance"); |
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48 |
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Cosmetics, docs.
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49 String url = getServletContext().getInitParameter("server-url"); |
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51 Document advance = ClientProtocolUtils.newAdvanceDocument( |
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52 artifact.getUuid(), |
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53 artifact.getHash(), |
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54 target); |
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55 |
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56 HttpClient client = new HttpClientImpl(url, locale); |
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57 |
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58 try { |
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59 Document description = (Document) client.advance( |
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60 new de.intevation.artifacts.httpclient.objects.Artifact( |
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61 artifact.getUuid(), |
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62 artifact.getHash()), |
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63 advance, |
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64 new DocumentResponseHandler()); |
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65 |
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66 if (description == null) { |
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67 throw new ServerException(ERROR_ADVANCE_ARTIFACT); |
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68 } |
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69 |
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70 String result = XMLUtils.xpathString( |
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71 description, |
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72 XPATH_RESULT, |
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73 ArtifactNamespaceContext.INSTANCE); |
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74 |
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75 if (result == null || !result.equals(OPERATION_FAILURE)) { |
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76 return (Artifact) new FLYSArtifactCreator().create(description); |
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77 } |
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78 } |
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79 catch (ConnectionException ce) { |
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80 logger.error(ce, ce); |
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81 } |
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82 |
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83 throw new ServerException(ERROR_ADVANCE_ARTIFACT); |
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84 } |
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85 } |
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86 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |