node.d/node_modules/netdata.js

   1 'use strict';\r
   2 \r
   3 var url = require('url');\r
   4 var http = require('http');\r
   5 var util = require('util');\r
   6 \r
   7 /*\r
   8 var netdata = require('netdata');\r
   9 \r
  10 var example_chart = {\r
  11         id: 'id',                                               // the unique id of the chart\r
  12         name: 'name',                                   // the name of the chart\r
  13         title: 'title',                                 // the title of the chart\r
  14         units: 'units',                                 // the units of the chart dimensions\r
  15         family: 'family',                               // the family of the chart\r
  16         category: 'category',                   // the category of the chart\r
  17         type: netdata.chartTypes.line,  // the type of the chart\r
  18         priority: 0,                                    // the priority relative to others in the same family and category\r
  19         update_every: 1,                                // the expected update frequency of the chart\r
  20         dimensions: {\r
  21                 'dim1': {\r
  22                         id: 'dim1',                             // the unique id of the dimension\r
  23                         name: 'name',                   // the name of the dimension\r
  24                         algorithm: netdata.chartAlgorithms.absolute,    // the id of the netdata algorithm\r
  25                         multiplier: 1,                  // the multiplier\r
  26                         divisor: 1,                             // the divisor\r
  27                         hidden: false,                  // is hidden (boolean)\r
  28                 },\r
  29                 'dim2': {\r
  30                         id: 'dim2',                             // the unique id of the dimension\r
  31                         name: 'name',                   // the name of the dimension\r
  32                         algorithm: 'absolute',  // the id of the netdata algorithm\r
  33                         multiplier: 1,                  // the multiplier\r
  34                         divisor: 1,                             // the divisor\r
  35                         hidden: false,                  // is hidden (boolean)\r
  36                 }\r
  37                 // add as many dimensions as needed\r
  38         }\r
  39 };\r
  40 */\r
  41 \r
  42 var netdata = {\r
  43         options: {\r
  44                 filename: __filename,\r
  45                 DEBUG: false,\r
  46                 update_every: 1000,\r
  47         },\r
  48 \r
  49         chartAlgorithms: {\r
  50                 incremental: 'incremental',\r
  51                 absolute: 'absolute',\r
  52                 percentage_of_absolute_row: 'percentage-of-absolute-row',\r
  53                 percentage_of_incremental_row: 'percentage-of-incremental-row'\r
  54         },\r
  55 \r
  56         chartTypes: {\r
  57                 line: 'line',\r
  58                 area: 'area',\r
  59                 stacked: 'stacked'\r
  60         },\r
  61 \r
  62         services: new Array(),\r
  63         modules_configuring: 0,\r
  64         charts: {},\r
  65 \r
  66 \r
  67         processors: {\r
  68                 http: {\r
  69 \r
  70                 },\r
  71         },\r
  72 \r
  73         stringify: function(obj) {\r
  74                 return util.inspect(obj, {depth: 10});\r
  75         },\r
  76 \r
  77         // show debug info, if debug is enabled\r
  78         debug: function(msg) {\r
  79                 if(this.options.DEBUG === true) {\r
  80                         var now = new Date();\r
  81                         console.error(now.toString() + ': ' + netdata.options.filename + ': DEBUG: ' + ((typeof(msg) === 'object')?netdata.stringify(msg):msg).toString());\r
  82                 }\r
  83         },\r
  84 \r
  85         // log an error\r
  86         error: function(msg) {\r
  87                 var now = new Date();\r
  88                 console.error(now.toString() + ': ' + netdata.options.filename + ': ERROR: ' + ((typeof(msg) === 'object')?netdata.stringify(msg):msg).toString());\r
  89         },\r
  90 \r
  91         // send data to netdata\r
  92         send: function(msg) {\r
  93                 console.log(msg.toString());\r
  94         },\r
  95 \r
  96         service: function(service) {\r
  97                 if(typeof service === 'undefined')\r
  98                         service = {};\r
  99 \r
 100                 service._current_chart = null;  // the current chart we work on\r
 101                 service._queue = '';                    // data to be sent to netdata\r
 102 \r
 103                 service.error_reported = false; // error log flood control\r
 104 \r
 105                 service.added = false;                  // added to netdata.services\r
 106                 service.enabled = true;\r
 107                 service.updates = 0;\r
 108                 service.running = false;\r
 109                 service.started = 0;\r
 110                 service.ended = 0;\r
 111 \r
 112                 if(typeof service.update_every === 'undefined')\r
 113                         service.update_every = service.module.update_every;\r
 114 \r
 115                 if(typeof service.update_every === 'undefined')\r
 116                         service.update_every = netdata.options.update_every;\r
 117 \r
 118                 if(typeof service.processor === 'undefined')\r
 119                         service.processor = netdata.processors.http;\r
 120 \r
 121                 service.commit = function() {\r
 122                         if(this.added !== true) {\r
 123                                 this.added = true;\r
 124                                 netdata.services.push(this);\r
 125                                 if(netdata.options.DEBUG === true) netdata.debug(this.module.name + ': ' + this.name + ': service committed.');\r
 126                         }\r
 127                 };\r
 128 \r
 129                 service._processResponse = function(response, callback) {\r
 130                         this.running = false;\r
 131                         this.ended = new Date().getTime();\r
 132 \r
 133                         if(netdata.options.DEBUG === true) netdata.debug(this.module.name + ': ' + this.name + ': processing response (received it in ' + (this.ended - this.started).toString() + ' ms)');\r
 134 \r
 135                         callback(this, response);\r
 136 \r
 137                         this.module.active--;\r
 138                         if(this.module.active < 0) {\r
 139                                 this.module.active = 0;\r
 140                                 if(netdata.options.DEBUG === true) netdata.debug(this.module.name + ': active module counter below zero.');\r
 141                         }\r
 142 \r
 143                         if(this.module.active === 0) {\r
 144                                 // check if we run under configure\r
 145                                 if(this.module.configure_callback !== null) {\r
 146                                         if(netdata.options.DEBUG === true) netdata.debug(this.module.name + ': configuration finish callback called from processResponse().');\r
 147                                         var ccallback = this.module.configure_callback;\r
 148                                         this.module.configure_callback = null;\r
 149                                         ccallback();\r
 150                                 }\r
 151                         }\r
 152                 };\r
 153 \r
 154                 service.execute = function(callback) {\r
 155                         this.module.active++;\r
 156                         this.running = true;\r
 157                         this.started = new Date().getTime();\r
 158                         this.updates++;\r
 159 \r
 160                         if(netdata.options.DEBUG === true) netdata.debug(this.module.name + ': ' + this.name + ': making request: ' + netdata.stringify(this.request));\r
 161 \r
 162                         var req = http.request(this.request, function(response) {\r
 163                                 if(netdata.options.DEBUG === true) netdata.debug(service.module.name + ': ' + service.name + ': got server response...');\r
 164 \r
 165                                 var end = false;\r
 166                                 var data = '';\r
 167                                 response.setEncoding('utf8');\r
 168 \r
 169                                 if(response.statusCode !== 200) {\r
 170                                         if(end === false) {\r
 171                                                 service.error('Got HTTP code ' + response.statusCode + ', failed to get data.');\r
 172                                                 end = true;\r
 173                                                 service._processResponse(null, callback);\r
 174                                         }\r
 175                                 }\r
 176 \r
 177                                 response.on('data', function(chunk) {\r
 178                                         if(end === false) data += chunk;\r
 179                                 });\r
 180 \r
 181                                 response.on('error', function() {\r
 182                                         if(end === false) {\r
 183                                                 service.error(': Read error, failed to get data.');\r
 184                                                 end = true;\r
 185                                                 service._processResponse(null, callback);\r
 186                                         }\r
 187                                 });\r
 188 \r
 189                                 response.on('end', function() {\r
 190                                         if(end === false) {\r
 191                                                 service.errorClear();\r
 192                                                 if(netdata.options.DEBUG === true) netdata.debug(service.module.name + ': ' + service.name + ': read completed.');\r
 193                                                 end = true;\r
 194                                                 service._processResponse(data, callback);\r
 195                                         }\r
 196                                 });\r
 197                         });\r
 198 \r
 199                         req.on('error', function(e) {\r
 200                                 service.error('Failed to make request: ' + netdata.stringify(service.request) + ', message: ' + e.message);\r
 201                                 service._processResponse(null, callback);\r
 202                         });\r
 203 \r
 204                         // write data to request body\r
 205                         if(typeof this.postData !== 'undefined' && this.request.method === 'POST') {\r
 206                                 if(netdata.options.DEBUG === true) netdata.debug(this.module.name + ': ' + this.name + ': posting data: ' + this.postData);\r
 207                                 req.write(this.postData);\r
 208                         }\r
 209 \r
 210                         req.end();\r
 211                 };\r
 212 \r
 213                 service.update = function() {\r
 214                         if(netdata.options.DEBUG === true) netdata.debug(this.module.name + ': ' + this.name + ': starting data collection...');\r
 215 \r
 216                         this.module.update(this, function() {\r
 217                                 service.ended = new Date().getTime();\r
 218                                 service.duration = service.ended - service.started;\r
 219                                 if(netdata.options.DEBUG === true) netdata.debug(service.module.name + ': ' + service.name + ': data collection ended in ' + service.duration.toString() + ' ms.');\r
 220                                 service.running = false;\r
 221                         });\r
 222                 };\r
 223 \r
 224                 service.error = function(message) {\r
 225                         if(this.error_reported === false) {\r
 226                                 netdata.error(this.module.name + ': ' + this.name + ': ' + message);\r
 227                                 this.error_reported = true;\r
 228                         }\r
 229                         else if(netdata.options.DEBUG === true)\r
 230                                 netdata.debug(this.module.name + ': ' + this.name + ': ' + message);\r
 231                 };\r
 232 \r
 233                 service.errorClear = function() {\r
 234                         this.error_reported = false;\r
 235                 };\r
 236 \r
 237                 service.queue = function(txt) {\r
 238                         this._queue += txt + '\n';\r
 239                 };\r
 240 \r
 241                 service._send_chart_to_netdata = function(chart) {\r
 242                         // internal function to send a chart to netdata\r
 243                         this.queue('CHART "' + chart.id + '" "' + chart.name + '" "' + chart.title + '" "' + chart.units + '" "' + chart.family + '" "' + chart.category + '" "' + chart.type + '" ' + chart.priority.toString() + ' ' + chart.update_every.toString());\r
 244                         \r
 245                         for(var dim in chart.dimensions) {\r
 246                                 var d = chart.dimensions[dim];\r
 247 \r
 248                                 this.queue('DIMENSION "' + d.id + '" "' + d.name + '" "' + d.algorithm + '" ' + d.multiplier.toString() + ' ' + d.divisor.toString() + ' ' + ((d.hidden === true)?'hidden':'').toString());\r
 249                                 d._created = true;\r
 250                                 d._updated = false;\r
 251                         }\r
 252 \r
 253                         chart._created = true;\r
 254                         chart._updated = false;\r
 255                 };\r
 256 \r
 257                 // begin data collection for a chart\r
 258                 service.begin = function(chart) {\r
 259                         if(this._current_chart !== null && this._current_chart !== chart) {\r
 260                                 this.error('Called begin() for chart ' + chart.id + ' while chart ' + this._current_chart.id + ' is still open. Closing it.');\r
 261                                 this.end();\r
 262                         }\r
 263 \r
 264                         if(typeof(chart.id) === 'undefined' || netdata.charts[chart.id] != chart) {\r
 265                                 this.error('Called begin() for chart ' + chart.id + ' that is not mine. Where did you find it? Ignoring it.');\r
 266                                 return false;\r
 267                         }\r
 268 \r
 269                         if(netdata.options.DEBUG === true) netdata.debug('setting current chart to ' + chart.id);\r
 270                         this._current_chart = chart;\r
 271                         this._current_chart._began = true;\r
 272 \r
 273                         if(this._current_chart._dimensions_count !== 0) {\r
 274                                 if(this._current_chart._created === false || this._current_chart._updated === true)\r
 275                                         this._send_chart_to_netdata(this._current_chart);\r
 276 \r
 277                                 var now = this.ended;\r
 278                                 this.queue('BEGIN ' + this._current_chart.id + ' ' + ((this._current_chart._last_updated > 0)?((now - this._current_chart._last_updated) * 1000):'').toString());\r
 279                         }\r
 280                         // else this.error('Called begin() for chart ' + chart.id + ' which is empty.');\r
 281 \r
 282                         this._current_chart._last_updated = now;\r
 283                         this._current_chart._began = true;\r
 284                         this._current_chart._counter++;\r
 285 \r
 286                         return true;\r
 287                 };\r
 288 \r
 289                 // set a collected value for a chart\r
 290                 // we do most things on the first value we attempt to set\r
 291                 service.set = function(dimension, value) {\r
 292                         if(this._current_chart === null) {\r
 293                                 this.error('Called set(' + dimension + ', ' + value + ') without an open chart.');\r
 294                                 return false;\r
 295                         }\r
 296 \r
 297                         if(typeof(this._current_chart.dimensions[dimension]) === 'undefined') {\r
 298                                 this.error('Called set(' + dimension + ', ' + value + ') but dimension "' + dimension + '" does not exist in chart "' + this._current_chart.id + '".');\r
 299                                 return false;\r
 300                         }\r
 301 \r
 302                         if(typeof value === 'undefined' || value === null)\r
 303                                 return false;\r
 304 \r
 305                         if(this._current_chart._dimensions_count !== 0)\r
 306                                 this.queue('SET ' + dimension + ' = ' + value);\r
 307 \r
 308                         return true;\r
 309                 };\r
 310 \r
 311                 // end data collection for the current chart - after calling begin()\r
 312                 service.end = function() {\r
 313                         if(this._current_chart !== null && this._current_chart._began === false) {\r
 314                                 this.error('Called end() without an open chart.');\r
 315                                 return false;\r
 316                         }\r
 317 \r
 318                         if(this._current_chart._dimensions_count !== 0) {\r
 319                                 this.queue('END');\r
 320                                 netdata.send(this._queue);\r
 321                         }\r
 322 \r
 323                         this._queue = '';\r
 324                         this._current_chart._began = false;\r
 325                         if(netdata.options.DEBUG === true) netdata.debug('sent chart ' + this._current_chart.id);\r
 326                         this._current_chart = null;\r
 327                         return true;\r
 328                 };\r
 329 \r
 330                 // discard the collected values for the current chart - after calling begin()\r
 331                 service.flush = function() {\r
 332                         if(this._current_chart === null || this._current_chart._began === false) {\r
 333                                 this.error('Called flush() without an open chart.');\r
 334                                 return false;\r
 335                         }\r
 336 \r
 337                         this._queue = '';\r
 338                         this._current_chart._began = false;\r
 339                         this._current_chart = null;\r
 340                         return true;\r
 341                 };\r
 342 \r
 343                 // create a netdata chart\r
 344                 service.chart = function(id, chart) {\r
 345                         if(typeof(netdata.charts[id]) === 'undefined') {\r
 346                                 netdata.charts[id] = {\r
 347                                         _created: false,\r
 348                                         _updated: false,\r
 349                                         _began: false,\r
 350                                         _counter: 0,\r
 351                                         _last_updated: 0,\r
 352                                         _dimensions_count: 0,\r
 353                                         id: id,\r
 354                                         name: id,\r
 355                                         title: 'untitled chart',\r
 356                                         units: 'a unit',\r
 357                                         family: id,\r
 358                                         category: id,\r
 359                                         type: netdata.chartTypes.line,\r
 360                                         priority: 0,\r
 361                                         update_every: netdata.options.update_every,\r
 362                                         dimensions: {}\r
 363                                 };\r
 364                         }\r
 365 \r
 366                         var c = netdata.charts[id];\r
 367 \r
 368                         if(typeof(chart.name) !== 'undefined' && chart.name !== c.name) {\r
 369                                 if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ' updated its name');\r
 370                                 c.name = chart.name;\r
 371                                 c._updated = true;\r
 372                         }\r
 373 \r
 374                         if(typeof(chart.title) !== 'undefined' && chart.title !== c.title) {\r
 375                                 if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ' updated its title');\r
 376                                 c.title = chart.title;\r
 377                                 c._updated = true;\r
 378                         }\r
 379 \r
 380                         if(typeof(chart.units) !== 'undefined' && chart.units !== c.units) {\r
 381                                 if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ' updated its units');\r
 382                                 c.units = chart.units;\r
 383                                 c._updated = true;\r
 384                         }\r
 385 \r
 386                         if(typeof(chart.family) !== 'undefined' && chart.family !== c.family) {\r
 387                                 if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ' updated its family');\r
 388                                 c.family = chart.family;\r
 389                                 c._updated = true;\r
 390                         }\r
 391 \r
 392                         if(typeof(chart.category) !== 'undefined' && chart.category !== c.category) {\r
 393                                 if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ' updated its category');\r
 394                                 c.category = chart.category;\r
 395                                 c._updated = true;\r
 396                         }\r
 397 \r
 398                         if(typeof(chart.type) !== 'undefined' && chart.type !== c.type) {\r
 399                                 if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ' updated its type');\r
 400                                 c.type = chart.type;\r
 401                                 c._updated = true;\r
 402                         }\r
 403 \r
 404                         if(typeof(chart.priority) !== 'undefined' && chart.priority !== c.priority) {\r
 405                                 if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ' updated its priority');\r
 406                                 c.priority = chart.priority;\r
 407                                 c._updated = true;\r
 408                         }\r
 409 \r
 410                         if(typeof(chart.update_every) !== 'undefined' && chart.update_every !== c.update_every) {\r
 411                                 if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ' updated its update_every');\r
 412                                 c.update_every = chart.update_every;\r
 413                                 c._updated = true;\r
 414                         }\r
 415 \r
 416                         if(typeof(chart.dimensions) !== 'undefined') {\r
 417                                 for(var x in chart.dimensions) {\r
 418                                         if(typeof(c.dimensions[x]) === 'undefined') {\r
 419                                                 c._dimensions_count++;\r
 420 \r
 421                                                 c.dimensions[x] = {\r
 422                                                         _created: false,\r
 423                                                         _updated: false,\r
 424                                                         id: x,                                  // the unique id of the dimension\r
 425                                                         name: x,                                // the name of the dimension\r
 426                                                         algorithm: netdata.chartAlgorithms.absolute,    // the id of the netdata algorithm\r
 427                                                         multiplier: 1,                  // the multiplier\r
 428                                                         divisor: 1,                             // the divisor\r
 429                                                         hidden: false,                  // is hidden (boolean)\r
 430                                                 };\r
 431 \r
 432                                                 if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ' created dimension ' + x);\r
 433                                                 c._updated = true;\r
 434                                         }\r
 435 \r
 436                                         var dim = chart.dimensions[x];\r
 437                                         var d = c.dimensions[x];\r
 438 \r
 439                                         if(typeof(dim.name) !== 'undefined' && d.name !== dim.name) {\r
 440                                                 if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ', dimension ' + x + ' updated its name');\r
 441                                                 d.name = dim.name;\r
 442                                                 d._updated = true;\r
 443                                         }\r
 444 \r
 445                                         if(typeof(dim.algorithm) !== 'undefined' && d.algorithm !== dim.algorithm) {\r
 446                                                 if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ', dimension ' + x + ' updated its algorithm from ' + d.algorithm + ' to ' + dim.algorithm);\r
 447                                                 d.algorithm = dim.algorithm;\r
 448                                                 d._updated = true;\r
 449                                         }\r
 450 \r
 451                                         if(typeof(dim.multiplier) !== 'undefined' && d.multiplier !== dim.multiplier) {\r
 452                                                 if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ', dimension ' + x + ' updated its multiplier');\r
 453                                                 d.multiplier = dim.multiplier;\r
 454                                                 d._updated = true;\r
 455                                         }\r
 456 \r
 457                                         if(typeof(dim.divisor) !== 'undefined' && d.divisor !== dim.divisor) {\r
 458                                                 if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ', dimension ' + x + ' updated its divisor');\r
 459                                                 d.divisor = dim.divisor;\r
 460                                                 d._updated = true;\r
 461                                         }\r
 462 \r
 463                                         if(typeof(dim.hidden) !== 'undefined' && d.hidden !== dim.hidden) {\r
 464                                                 if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ', dimension ' + x + ' updated its hidden status');\r
 465                                                 d.hidden = dim.hidden;\r
 466                                                 d._updated = true;\r
 467                                         }\r
 468 \r
 469                                         if(d._updated) c._updated = true;\r
 470                                 }\r
 471                         }\r
 472 \r
 473                         //if(netdata.options.DEBUG === true) netdata.debug(netdata.charts);\r
 474                         return netdata.charts[id];\r
 475                 };\r
 476 \r
 477                 return service;\r
 478         },\r
 479 \r
 480         runAllServices: function() {\r
 481                 if(netdata.options.DEBUG === true) netdata.debug('runAllServices()');\r
 482 \r
 483                 var now = new Date().getTime();\r
 484                 var len = netdata.services.length;\r
 485                 while(len--) {\r
 486                         var service = netdata.services[len];\r
 487 \r
 488                         if(service.enabled === false || service.running === true) continue;\r
 489                         if(now - service.ended < service.update_every) continue;\r
 490 \r
 491                         service.update();\r
 492                 }\r
 493 \r
 494                 setTimeout(netdata.runAllServices, 100);\r
 495         },\r
 496 \r
 497         start: function() {\r
 498                 if(netdata.options.DEBUG === true) this.debug('started, services:');\r
 499 \r
 500                 if(this.services.length === 0) {\r
 501                         this.disableNodePlugin();\r
 502                         process.exit(1);\r
 503                 }\r
 504                 else this.runAllServices();\r
 505         },\r
 506 \r
 507         // disable the whole node.js plugin\r
 508         disableNodePlugin: function() {\r
 509                 this.send('DISABLE');\r
 510                 process.exit(1);\r
 511         },\r
 512 \r
 513         requestFromParams: function(protocol, hostname, port, path, method) {\r
 514                 return {\r
 515                         protocol: protocol,\r
 516                         hostname: hostname,\r
 517                         port: port,\r
 518                         path: path,\r
 519                         //family: 4,\r
 520                         method: method,\r
 521                         headers: {\r
 522                                 'Content-Type': 'application/x-www-form-urlencoded',\r
 523                                 'Connection': 'keep-alive'\r
 524                         },\r
 525                         agent: new http.Agent({\r
 526                                 keepAlive: true,\r
 527                                 keepAliveMsecs: netdata.options.update_every,\r
 528                                 maxSockets: 2, // it must be 2 to work\r
 529                                 maxFreeSockets: 1\r
 530                         })\r
 531                 };\r
 532         },\r
 533 \r
 534         requestFromURL: function(a_url) {\r
 535                 var u = url.parse(a_url);\r
 536                 return netdata.requestFromParams(u.protocol, u.hostname, u.port, u.path, 'GET');\r
 537         },\r
 538 \r
 539         configure: function(module, config, callback) {\r
 540                 if(netdata.options.DEBUG === true) this.debug(module.name + ': configuring (update_every: ' + this.options.update_every + ')...');\r
 541 \r
 542                 module.active = 0;\r
 543                 module.update_every = this.options.update_every;\r
 544 \r
 545                 if(typeof config.update_every !== 'undefined')\r
 546                         module.update_every = config.update_every * 1000;\r
 547 \r
 548                 module.enable_autodetect = (config.enable_autodetect)?true:false;\r
 549 \r
 550                 if(typeof(callback) === 'function')\r
 551                         module.configure_callback = callback;\r
 552                 else\r
 553                         module.configure_callback = null;\r
 554 \r
 555                 var added = module.configure(config);\r
 556 \r
 557                 if(netdata.options.DEBUG === true) this.debug(module.name + ': configured, reporting ' + added + ' eligible services.');\r
 558 \r
 559                 if(module.configure_callback !== null && added === 0) {\r
 560                         if(netdata.options.DEBUG === true) this.debug(module.name + ': configuration finish callback called from configure().');\r
 561                         module.configure_callback = null;\r
 562                         callback();\r
 563                 }\r
 564 \r
 565                 return added;\r
 566         }\r
 567 };\r
 568 \r
 569 if(netdata.options.DEBUG === true) netdata.debug('loaded netdata from: ' + __filename);\r
 570 module.exports = netdata;\r