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annotate flys-client/src/main/java/de/intevation/flys/client/server/auth/UserClient.java @ 2984:06d999e95615

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Add UserClient class to handle REST communication for user related interfaces. If a logged in user is not known add him to the database via the REST protocol. flys-client/trunk@4994 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Bjoern Ricks <bjoern.ricks@intevation.de>
date Fri, 13 Jul 2012 13:38:32 +0000
parents
children 637d114232b2
rev   line source
2984
06d999e95615 Add UserClient class to handle REST communication for user related interfaces.
Bjoern Ricks <bjoern.ricks@intevation.de>
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1 package de.intevation.flys.client.server.auth;
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2
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3 import javax.xml.xpath.XPathConstants;
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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 org.w3c.dom.Document;
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8 import org.w3c.dom.Element;
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9 import org.w3c.dom.Node;
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10 import org.w3c.dom.NodeList;
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11
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12 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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13 import de.intevation.artifacts.common.utils.XMLUtils;
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14
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15 import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
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16 import de.intevation.artifacts.httpclient.http.HttpClient;
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17 import de.intevation.artifacts.httpclient.http.HttpClientImpl;
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18
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19 /**
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20 * UserClient is a class to allow easier communication
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21 * with the REST based artifact user protocol
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22 */
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23 public class UserClient {
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24
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25 private static final Logger logger = Logger.getLogger(UserClient.class);
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26
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27 private String url;
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28
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29 public UserClient(String url) {
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30 this.url = url;
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31 }
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32
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33 public boolean userExists(User user) throws ConnectionException {
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34 NodeList users = this.listUsers();
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35
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36 if (users == null || users.getLength() == 0) {
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37 return false;
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38 }
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39 for(int i=0; i < users.getLength(); i++) {
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40 Node usernode = users.item(i);
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41 String name = XMLUtils.xpathString(
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42 usernode, "@art:name", ArtifactNamespaceContext.INSTANCE);
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43 if (name.equals(user.getName())) {
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44 return true;
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45 }
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46 }
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47 return false;
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48 }
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49
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50 public boolean createUser(User user) throws ConnectionException {
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51 logger.debug("Creating new user " + user.getName());
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52 HttpClient client = new HttpClientImpl(this.url);
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53
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54 Document document = XMLUtils.newDocument();
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55
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56 XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
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57 document,
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58 ArtifactNamespaceContext.NAMESPACE_URI,
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59 ArtifactNamespaceContext.NAMESPACE_PREFIX
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60 );
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61
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62 Element action = creator.create("action");
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63
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64 Element type = creator.create("type");
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65 type.setAttribute("name", "create");
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66 Element artuser = creator.create("user");
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67 artuser.setAttribute("name", user.getName());
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68
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69 //TODO create roles
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70 action.appendChild(type);
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71 action.appendChild(artuser);
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72 document.appendChild(action);
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73
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74 logger.debug("Create user request xml: " + XMLUtils.toString(document));
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75
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76 Document resp = client.createUser(document);
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77
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78 logger.debug("Create user response xml: " + XMLUtils.toString(resp));
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79
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80 String XPATH_RESPONSE = "/art:result";
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81 Node nresult = (Node) XMLUtils.xpath(
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82 resp,
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83 XPATH_RESPONSE,
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84 XPathConstants.NODE,
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85 ArtifactNamespaceContext.INSTANCE);
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86 String result = nresult.getTextContent();
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87 return (result != null && result.equalsIgnoreCase("success"));
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88 }
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89
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90 public NodeList listUsers() throws ConnectionException {
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91 HttpClient client = new HttpClientImpl(this.url);
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92
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93 Document users = (Document) client.listUsers();
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94
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95 String XPATH_USERS = "/art:users/art:user";
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96
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97 return (NodeList) XMLUtils.xpath(
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98 users,
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99 XPATH_USERS,
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100 XPathConstants.NODESET,
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101 ArtifactNamespaceContext.INSTANCE);
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102 }
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103 }
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104 // vim: set si et fileencoding=utf-8 ts=4 sw=4 tw=80:
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105
http://dive4elements.wald.intevation.org