1 | package org.greenstone.gsdl3.service;
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2 |
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3 | import java.io.File;
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4 | import java.io.Serializable;
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5 | import java.util.ArrayList;
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6 | import java.util.HashMap;
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7 |
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8 | import org.apache.log4j.Logger;
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9 | import org.greenstone.gsdl3.util.DerbyWrapper;
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10 | import org.greenstone.gsdl3.util.GSXML;
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11 | import org.greenstone.gsdl3.util.XMLConverter;
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12 | import org.greenstone.util.GlobalProperties;
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13 | import org.w3c.dom.Document;
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14 | import org.w3c.dom.Element;
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15 |
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16 | public class UserTracker extends ServiceRack
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17 | {
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18 | static Logger logger = Logger.getLogger(org.greenstone.gsdl3.service.UserTracker.class.getName());
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19 |
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20 | /**************************************************
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21 | * The list of services the User Tracker supports *
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22 | *************************************************/
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23 | protected static final String RECORD_USER_ACTION = "RecordUserAction";
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24 | protected static final String GET_ACTIVITY_ON_PAGE = "GetActivityOnPage";
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25 | /*************************************************/
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26 |
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27 | String[] services = { RECORD_USER_ACTION, GET_ACTIVITY_ON_PAGE };
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28 |
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29 | // the parameters these services use
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30 | protected static final String USER_PARAM = "username";
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31 | protected static final String COLLECTION_PARAM = "collection";
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32 | protected static final String SITE_PARAM = "site";
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33 | protected static final String OID_PARAM = "oid";
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34 | protected static final String ACTION_PARAM = "action";
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35 |
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36 | /** configure this service */
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37 | public boolean configure(Element info, Element extra_info)
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38 | {
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39 | if (!super.configure(info, extra_info))
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40 | {
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41 | return false;
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42 | }
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43 |
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44 | logger.info("Configuring UserTracker...");
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45 | this.config_info = info;
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46 |
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47 | for (int i = 0; i < services.length; i++)
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48 | {
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49 | Element service = this.desc_doc.createElement(GSXML.SERVICE_ELEM);
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50 | service.setAttribute(GSXML.TYPE_ATT, GSXML.SERVICE_TYPE_RETRIEVE);
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51 | service.setAttribute(GSXML.NAME_ATT, services[i]);
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52 | this.short_service_info.appendChild(service);
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53 | }
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54 |
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55 | // should any of the params be saved to the session?
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56 | // assuming not at this stage. But if they do need to be, then
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57 | // sture them here in save_params.
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58 | // this.save_params.add(XXX_PARAM);
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59 | return true;
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60 | }
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61 |
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62 | protected Element getServiceDescription(Document doc, String service_id, String lang, String subset)
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63 | {
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64 | for (int i = 0; i < services.length; i++)
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65 | {
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66 | if (service_id.equals(services[i]))
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67 | {
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68 | Element service_elem = doc.createElement(GSXML.SERVICE_ELEM);
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69 | service_elem.setAttribute(GSXML.TYPE_ATT, GSXML.SERVICE_TYPE_RETRIEVE);
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70 | service_elem.setAttribute(GSXML.NAME_ATT, services[i]);
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71 | return service_elem;
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72 | }
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73 | }
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74 |
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75 | return null;
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76 | }
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77 |
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78 | protected synchronized Element processRecordUserAction(Element request)
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79 | {
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80 | Document result_doc = XMLConverter.newDOM();
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81 | Element result = GSXML.createBasicResponse(result_doc, RECORD_USER_ACTION);
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82 |
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83 | Element paramList = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
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84 | if (paramList == null)
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85 | {
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86 | GSXML.addError(result, "Request has no parameter list");
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87 | return result;
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88 | }
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89 |
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90 | HashMap<String, Serializable> params = GSXML.extractParams(paramList, true);
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91 | String username = (String) params.get(USER_PARAM);
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92 | String collection = (String) params.get(COLLECTION_PARAM);
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93 | String site = (String) params.get(SITE_PARAM);
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94 | String oid = (String) params.get(OID_PARAM);
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95 | String action = (String) params.get(ACTION_PARAM);
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96 |
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97 | DerbyWrapper database = new DerbyWrapper(GlobalProperties.getGSDL3Home() + File.separatorChar + "etc" + File.separatorChar + "usersDB");
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98 | database.addUserAction(username, site, collection, oid, action);
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99 | database.closeDatabase();
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100 |
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101 | return result;
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102 | }
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103 |
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104 | protected synchronized Element processGetActivityOnPage(Element request)
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105 | {
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106 | Document result_doc = XMLConverter.newDOM();
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107 | Element result = GSXML.createBasicResponse(result_doc, GET_ACTIVITY_ON_PAGE);
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108 | try
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109 | {
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110 |
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111 | Element paramList = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
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112 | if (paramList == null)
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113 | {
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114 | GSXML.addError(result, "Request has no parameter list");
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115 | return result;
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116 | }
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117 |
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118 | HashMap<String, Serializable> params = GSXML.extractParams(paramList, true);
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119 | String collection = (String) params.get(COLLECTION_PARAM);
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120 | String site = (String) params.get(SITE_PARAM);
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121 | String oid = (String) params.get(OID_PARAM);
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122 |
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123 | DerbyWrapper database = new DerbyWrapper(GlobalProperties.getGSDL3Home() + File.separatorChar + "etc" + File.separatorChar + "usersDB");
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124 | ArrayList<HashMap<String, String>> userActions = database.getMostRecentUserActions(site, collection, oid);
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125 |
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126 | Element userList = result_doc.createElement("userList");
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127 | for (HashMap<String, String> userAction : userActions)
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128 | {
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129 | Element user = result_doc.createElement("user");
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130 | user.setAttribute("username", userAction.get("username"));
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131 | user.setAttribute("action", userAction.get("action"));
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132 | userList.appendChild(user);
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133 | }
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134 | result.appendChild(userList);
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135 | }
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136 | catch (Exception ex)
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137 | {
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138 | ex.printStackTrace();
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139 | }
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140 | return result;
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141 | }
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142 | }
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