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1 /* |
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2 * Modelled Trace API |
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3 */ |
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4 IriSP.TraceManager = function($) { |
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5 /* |
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6 * FIXME: Write proper representation functions (str, json, ...) |
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7 */ |
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8 |
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9 var BufferedService_prototype = { |
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10 /* |
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11 * Buffered service for traces |
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12 */ |
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13 // url: "", |
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14 // buffer: [], |
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15 // isReady: false, |
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16 // timer: null, |
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17 |
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18 /* Flush buffer */ |
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19 flush: function() { |
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20 // FIXME: should add a counter to avoid starving the sync |
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21 // process in case of too many generated obsels. |
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22 // FIXME: add mutex on this.buffer |
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23 if (! this.isReady) |
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24 { |
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25 console.log("Sync service not ready"); |
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26 } else if (this.buffer.length) { |
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27 var temp = this.buffer; |
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28 this.buffer = []; |
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29 |
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30 if (this.mode == 'GET') |
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31 { |
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32 // GET mode: do some data mangline. We mark the |
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33 // "compressed" nature of the generated JSON by |
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34 // prefixing it with c |
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35 var data = 'c' + JSON.stringify(temp.map(function (o) { return o.toCompactJSON(); })); |
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36 // Swap " (very frequent, which will be |
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37 // serialized into %22) and / (rather rare), this |
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38 // saves some bytes |
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39 data = data.replace(/[\/"]/g, function(s){ return s == '/' ? '"' : '/'; }).replace('#','%23'); |
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40 // FIXME: check data length (< 2K is safe) |
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41 var request=$('<img/>').attr('src', this.url + 'trace/?data=' + data); |
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42 } |
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43 else |
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44 { |
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45 $.ajax({ url: this.url + 'trace/', |
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46 type: 'POST', |
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47 contentType: 'application/json', |
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48 data: JSON.stringify(temp.map(function (o) { return o.toJSON(); })), |
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49 processData: false, |
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50 // Type of the returned data. |
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51 dataType: "html", |
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52 error: function(jqXHR, textStatus, errorThrown) { |
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53 // FIXME: not called for JSONP/crossdomain |
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54 console.log("Error when sending buffer:", textStatus); |
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55 }, |
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56 success: function(data, textStatus, jqXHR) { |
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57 // FIXME: parse the returned JSON, and get |
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58 // the updated properties (id, uri...) to apply them to temp items |
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59 } |
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60 }); |
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61 } |
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62 } |
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63 }, |
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64 |
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65 /* Enqueue an obsel */ |
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66 enqueue: function(obsel) { |
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67 this.buffer.push(obsel); |
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68 }, |
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69 |
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70 start_timer: function() { |
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71 var self = this; |
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72 if (this.timer === null) { |
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73 this.timer = window.setInterval(function() { |
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74 console.log("Flushing timeout"); |
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75 self.flush(); |
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76 }, this.timeOut); |
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77 } |
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78 }, |
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79 |
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80 stop_timer: function() { |
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81 if (this.timer !== null) { |
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82 window.clearInterval(this.timer); |
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83 this.timer = null; |
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84 } |
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85 }, |
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86 |
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87 /* |
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88 * Initialize the sync service |
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89 */ |
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90 init: function() { |
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91 var self = this; |
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92 if (this.isReady) |
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93 /* Already initialized */ |
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94 return; |
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95 if (this.mode == 'GET') |
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96 { |
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97 var request=$('<img/>').attr('src', this.url + 'login?userinfo={"name":"ktbs4js"}'); |
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98 // Do not wait for the return, assume it is |
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99 // initialized. This assumption will not work anymore |
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100 // if login returns some necessary information |
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101 this.isReady = true; |
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102 } |
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103 else |
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104 { |
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105 $.ajax({ url: this.url + 'login', |
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106 type: 'POST', |
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107 data: 'userinfo={"name":"ktbs4js"}', |
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108 success: function(data, textStatus, jqXHR) { |
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109 self.isReady = true; |
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110 if (self.buffer.length) { |
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111 self.flush(); |
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112 } |
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113 } |
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114 }); |
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115 } |
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116 } |
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117 }; |
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118 var BufferedService = function(url, mode) { |
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119 this.url = url; |
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120 this.buffer = []; |
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121 this.isReady = false; |
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122 this.timer = null; |
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123 /* mode can be either POST or GET */ |
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124 if (mode == 'POST' || mode == 'GET') |
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125 this.mode = mode; |
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126 else |
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127 this.mode = 'POST'; |
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128 /* Flush buffer every timeOut ms if the sync_mode is delayed */ |
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129 this.timeOut = 2000; |
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130 }; |
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131 BufferedService.prototype = BufferedService_prototype; |
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132 |
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133 var Trace_prototype = { |
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134 /* FIXME: We could/should use a sorted list such as |
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135 http://closure-library.googlecode.com/svn/docs/class_goog_structs_AvlTree.html |
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136 to speed up queries based on time */ |
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137 obsels: [], |
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138 /* Trace URI */ |
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139 uri: "", |
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140 sync_mode: "none", |
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141 default_subject: "", |
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142 /* baseuri is used as the base URI to resolve relative |
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143 * attribute-type names in obsels. Strictly speaking, this |
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144 * should rather be expressed as a reference to model, or |
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145 * more generically, as a qname/URI dict */ |
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146 baseuri: "", |
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147 /* Mapping of obsel type or property name to a compact |
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148 * representation (shorthands). |
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149 */ |
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150 shorthands: null, |
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151 syncservice: null, |
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152 |
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153 /* Define the trace URI */ |
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154 set_uri: function(uri) { |
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155 this.uri = uri; |
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156 }, |
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157 |
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158 /* Sync mode: delayed, sync (immediate sync), none (no |
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159 * synchronisation with server, the trace has to be explicitly saved |
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160 * if needed */ |
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161 set_sync_mode: function(mode) { |
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162 this.sync_mode = mode; |
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163 if (this.syncservice != null) { |
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164 if (mode !== 'none') { |
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165 this.syncservice.init(); |
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166 } |
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167 if (mode == 'delayed') { |
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168 this.syncservice.start_timer(); |
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169 } else { |
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170 this.syncservice.stop_timer(); |
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171 } |
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172 } |
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173 }, |
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174 |
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175 /* |
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176 * Return a list of the obsels of this trace matching the parameters |
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177 */ |
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178 list_obsels: function(_begin, _end, _reverse) { |
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179 var res; |
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180 if (typeof _begin !== 'undefined' || typeof _end !== 'undefined') { |
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181 /* |
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182 * Not optimized yet. |
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183 */ |
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184 res = []; |
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185 var l = this.obsels.length; |
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186 for (var i = 0; i < l; i++) { |
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187 var o = this.obsels[i]; |
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188 if ((typeof _begin !== 'undefined' && o.begin > _begin) && (typeof _end !== 'undefined' && o.end < _end)) { |
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189 res.push(o); |
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190 } |
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191 } |
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192 } |
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193 |
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194 if (typeof _reverse !== 'undefined') { |
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195 if (res !== undefined) { |
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196 /* Should reverse the whole list. Make a copy. */ |
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197 res = this.obsels.slice(0); |
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198 } |
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199 res.sort(function(a, b) { return b.begin - a.begin; }); |
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200 return res; |
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201 } |
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202 |
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203 if (res === undefined) { |
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204 res = this.obsels; |
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205 } |
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206 return res; |
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207 |
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208 }, |
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209 |
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210 /* |
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211 * Return the obsel of this trace identified by the URI, or undefined |
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212 */ |
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213 get_obsel: function(id) { |
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214 for (var i = 0; i < this.obsels.length; i++) { |
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215 /* FIXME: should check against variations of id/uri, take this.baseuri into account */ |
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216 if (this.obsels[i].uri === id) { |
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217 return this.obsels[i]; |
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218 } |
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219 } |
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220 return undefined; |
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221 }, |
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222 |
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223 set_default_subject: function(subject) { |
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224 this.default_subject = subject; |
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225 }, |
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226 |
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227 get_default_subject: function() { |
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228 return this.default_subject; |
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229 }, |
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230 |
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231 /* (type:ObselType, begin:int, end:int?, subject:str?, attributes:[AttributeType=>any]?) */ |
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232 /* Create a new obsel and add it to the trace */ |
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233 create_obsel: function(type, begin, end, subject, _attributes) { |
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234 var o = new Obsel(type, begin, end, subject); |
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235 if (typeof _attributes !== 'undefined') { |
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236 o.attributes = _attributes; |
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237 } |
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238 o.trace = this; |
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239 this.obsels.push(o); |
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240 if (this.syncservice !== null && this.sync_mode != 'none') { |
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241 this.syncservice.enqueue(o); |
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242 if (this.sync_mode === 'sync') { |
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243 // Immediate sync of the obsel. |
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244 this.syncservice.flush(); |
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245 } |
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246 } |
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247 }, |
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248 |
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249 obselProbe : function(element, bindingEvent, ObselFunction) { |
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250 console.log("!!!!!!!!- ICI -!!!!!!!!!"); |
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251 console.log(element); |
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252 console.log(bindingEvent); |
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253 console.log(ObselFunction); |
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254 |
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255 //var myOPI = self.setInterval("ObselProbeInterval("+element+","+bindingEvent+","+ObselFunction+")",1000); |
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256 var myOPI = self.setInterval("ObselProbeInterval("+element+")",1000); |
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257 //var ObselProbeInterval = function(element, bindingEvent, ObselFunction){ |
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258 var ObselProbeInterval = function(element) { |
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259 console.log("!!!!!!!!- ObselProbeInterval -!!!!!!!!!"); |
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260 console.log($(element).length); |
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261 /* |
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262 if($(element).length!=0){ |
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263 $(element).bind(bindingEvent, ObselFunction ); |
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264 this.clearInterval(); |
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265 }else{ console.log("!!!!!!!!- EXISTE PAS -!!!!!!!!!") |
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266 } |
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267 */ |
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268 // |
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269 }; |
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270 |
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271 }, |
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272 /* Helper methods */ |
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273 |
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274 /* Create a new obsel with the given attributes */ |
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275 trace: function(type, _attributes, _begin, _end, _subject) { |
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276 var t = (new Date()).getTime(); |
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277 if (typeof begin === 'undefined') { |
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278 _begin = t; |
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279 } |
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280 if (typeof end === 'undefined') { |
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281 _end = _begin; |
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282 } |
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283 if (typeof subject === 'undefined') { |
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284 _subject = this.default_subject; |
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285 } |
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286 if (typeof _attributes === 'undefined') { |
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287 _attributes = {}; |
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288 } |
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289 return this.create_obsel(type, _begin, _end, _subject, _attributes); |
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290 } |
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291 }; |
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292 |
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293 var Trace = function(uri, requestmode) { |
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294 /* FIXME: We could/should use a sorted list such as |
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295 http://closure-library.googlecode.com/svn/docs/class_goog_structs_AvlTree.html |
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296 to speed up queries based on time */ |
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297 this.obsels = []; |
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298 /* Trace URI */ |
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299 if (uri === undefined) |
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300 uri = ""; |
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301 this.uri = uri; |
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302 this.sync_mode = "none"; |
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303 this.default_subject = ""; |
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304 this.shorthands = {}; |
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305 /* baseuri is used a the base URI to resolve relative attribute names in obsels */ |
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306 this.baseuri = ""; |
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307 |
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308 this.syncservice = new BufferedService(uri, requestmode); |
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309 $(window).unload( function () { |
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310 if (this.syncservice && this.sync_mode !== 'none') { |
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311 this.syncservice.flush(); |
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312 this.syncservice.stop_timer(); |
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313 } |
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314 }); |
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315 }; |
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316 Trace.prototype = Trace_prototype; |
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317 |
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318 var Obsel_prototype = { |
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319 /* The following attributes are here for documentation |
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320 * purposes. They MUST be defined in the constructor |
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321 * function. */ |
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322 trace: undefined, |
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323 obselProbe: undefined, |
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324 type: undefined, |
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325 begin: undefined, |
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326 end: undefined, |
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327 subject: undefined, |
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328 /* Dictionary indexed by ObselType URIs */ |
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329 attributes: {}, |
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330 |
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331 /* Method definitions */ |
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332 get_trace: function() { |
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333 return this.trace; |
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334 }, |
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335 |
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336 get_obsel_type: function() { |
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337 /* FIXME: maybe we should return a ObselType object. In the meantime, return the URI */ |
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338 return this.type; |
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339 }, |
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340 get_begin: function() { |
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341 return this.begin; |
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342 }, |
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343 get_end: function() { |
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344 return this.end; |
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345 }, |
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346 get_subject: function() { |
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347 return this.subject; |
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348 }, |
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349 |
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350 list_attribute_types: function() { |
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351 var result = []; |
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352 for (var prop in this.attributes) { |
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353 result.push(prop); |
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354 } |
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355 /* FIXME: we return URIs here instead of AttributeType elements */ |
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356 return result; |
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357 }, |
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358 |
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359 list_relation_types: function() { |
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360 /* FIXME: not implemented yet */ |
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361 }, |
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362 |
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363 list_related_obsels: function (rt) { |
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364 /* FIXME: not implemented yet */ |
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365 }, |
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366 list_inverse_relation_types: function () { |
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367 /* FIXME: not implemented yet */ |
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368 }, |
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369 list_relating_obsels: function (rt) { |
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370 /* FIXME: not implemented yet */ |
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371 }, |
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372 /* |
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373 * Return the value of the given attribute type for this obsel |
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374 */ |
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375 get_attribute_value: function(at) { |
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376 if (typeof at === "string") |
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377 /* It is a URI */ |
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378 return this.attributes[at]; |
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379 else |
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380 /* FIXME: check that at is instance of AttributeType */ |
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381 return this.attributes[at.uri]; |
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382 }, |
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383 |
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384 |
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385 /* obsel modification (trace amendment) */ |
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386 |
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387 set_attribute_value: function(at, value) { |
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388 if (typeof at === "string") |
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389 /* It is a URI */ |
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390 this.attributes[at] = value; |
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391 /* FIXME: check that at is instance of AttributeType */ |
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392 else |
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393 this.attributes[at.uri] = value; |
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394 }, |
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395 |
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396 del_attribute_value: function(at) { |
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397 if (typeof at === "string") |
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398 /* It is a URI */ |
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399 delete this.attributes[at]; |
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400 /* FIXME: check that at is instance of AttributeType */ |
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401 else |
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402 delete this.attributes[at.uri]; |
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403 }, |
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404 |
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405 add_related_obsel: function(rt, value) { |
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406 /* FIXME: not implemented yet */ |
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407 }, |
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408 |
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409 del_related_obsel: function(rt, value) { |
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410 /* FIXME: not implemented yet */ |
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411 }, |
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412 |
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413 /* |
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414 * Return a JSON representation of the obsel |
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415 */ |
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416 toJSON: function() { |
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417 var r = { |
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418 "@id": this.id, |
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419 "@type": this.type, |
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420 "begin": this.begin, |
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421 "end": this.end, |
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422 "subject": this.subject |
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423 }; |
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424 for (var prop in this.attributes) { |
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425 r[prop] = this.attributes[prop]; |
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426 } |
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427 return r; |
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428 }, |
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429 |
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430 /* |
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431 * Return a compact JSON representation of the obsel. |
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432 * Use predefined + custom shorthands for types/properties |
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433 */ |
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434 toCompactJSON: function() { |
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435 var r = { |
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436 "@i": this.id, |
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437 "@t": (this.trace.shorthands.hasOwnProperty(this.type) |
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438 ? this.trace.shorthands[this.type] : this.type), |
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439 "@b": this.begin, |
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440 "@e": this.end, |
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441 "@s": this.subject |
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442 }; |
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443 for (var prop in this.attributes) { |
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444 var v = this.attributes[prop]; |
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445 r[prop] = this.trace.shorthands.hasOwnProperty(v) ? this.trace.shorthands[v] : v; |
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446 } |
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447 return r; |
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448 }, |
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449 |
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450 toJSONstring: function() { |
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451 return JSON.stringify(this.toJSON()); |
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452 } |
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453 }; |
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454 |
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455 var Obsel = function(type, begin, end, subject, attributes) { |
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456 this.trace = undefined; |
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457 this.uri = ""; |
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458 this.id = ""; |
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459 this.type = type; |
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460 this.begin = begin; |
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461 this.end = end; |
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462 this.subject = subject; |
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463 /* Is the obsel synched with the server ? */ |
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464 this.sync_status = false; |
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465 /* Dictionary indexed by ObselType URIs */ |
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466 this.attributes = {}; |
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467 }; |
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468 Obsel.prototype = Obsel_prototype; |
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469 |
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470 var TraceManager_prototype = { |
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471 traces: [], |
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472 /* |
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473 * Return the trace with id name |
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474 * If it was not registered, return undefined. |
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475 */ |
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476 get_trace: function(name) { |
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477 return this.traces[name]; |
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478 }, |
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479 |
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480 /* |
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481 * Explicitly create and initialize a new trace with the given name. |
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482 * The optional uri parameter allows to initialize the trace URI. |
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483 * |
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484 * If another existed with the same name before, then it is replaced by a new one. |
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485 */ |
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486 init_trace: function(name, params) |
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487 { |
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488 console.log("init_trace", params); |
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489 url = params.url ? params.url : ""; |
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490 requestmode = params.requestmode ? params.requestmode : "POST"; |
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491 syncmode = params.syncmode ? params.syncmode : "none"; |
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492 var t = new Trace(url, requestmode); |
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493 t.set_sync_mode(syncmode); |
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494 this.traces[name] = t; |
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495 return t; |
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496 } |
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497 }; |
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498 |
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499 var TraceManager = function() { |
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500 this.traces = {}; |
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501 }; |
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502 TraceManager.prototype = TraceManager_prototype; |
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503 |
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504 return new TraceManager(); |
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505 }; |