summaryrefslogtreecommitdiffstats
path: root/web/gui/v1/dashboard-react.js
blob: aa067a7266104af69eaab2dcd521a3dd9277a799 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
/* eslint-disable */

/**
 *  after react-dashboard refractor, this file can be renamed to 'dashboard.js'
 *  and it will:
 *  - setup global objects, so any assignments like 'NETDATA.options.current.destroy_on_hide = true'
 *    will not break. we need to add it in places where 'dashboard.js' is
 *  - create react root DOM node
 *  - load react app
 *
 *  Later, for performance improvement, the bundle can be added to dashboard-rect.js,
 *  but we need to run the react-app part after DOM is created and ready
 */

// ----------------------------------------------------------------------------
// global namespace

// Should stay var!
var NETDATA = window.NETDATA || {};
window.NETDATA = NETDATA // when imported as npm module

/// A heuristic for detecting slow devices.
let isSlowDeviceResult;
const isSlowDevice = function () {
  if (!isSlowDeviceResult) {
    return isSlowDeviceResult;
  }

  try {
    let ua = navigator.userAgent.toLowerCase();

    let iOS = /ipad|iphone|ipod/.test(ua) && !window.MSStream;
    let android = /android/.test(ua) && !window.MSStream;
    isSlowDeviceResult = (iOS || android);
  } catch (e) {
    isSlowDeviceResult = false;
  }

  return isSlowDeviceResult;
};

if (typeof window.netdataSnapshotData === 'undefined') {
  window.netdataSnapshotData = null;
}

if (typeof window.netdataShowHelp === 'undefined') {
  window.netdataShowHelp = true;
}

if (typeof window.netdataShowAlarms === 'undefined') {
  window.netdataShowAlarms = false;
}

if (typeof window.netdataRegistryAfterMs !== 'number' || window.netdataRegistryAfterMs < 0) {
  window.netdataRegistryAfterMs = 0; // 1500;
}

if (typeof window.netdataRegistry === 'undefined') {
  // backward compatibility
  window.netdataRegistry = (typeof netdataNoRegistry !== 'undefined' && netdataNoRegistry === false);
}

if (window.netdataRegistry === false && typeof netdataRegistryCallback === 'function') {
  window.netdataRegistry = true;
}

// ----------------------------------------------------------------------------------------------------------------
// the defaults for all charts

// if the user does not specify any of these, the following will be used

NETDATA.chartDefaults = {
  width: '100%',                  // the chart width - can be null
  height: '100%',                 // the chart height - can be null
  min_width: null,                // the chart minimum width - can be null
  library: 'dygraph',             // the graphing library to use
  method: 'average',              // the grouping method
  before: 0,                      // panning
  after: -600,                    // panning
  pixels_per_point: 1,            // the detail of the chart
  fill_luminance: 0.8             // luminance of colors in solid areas
};



// ----------------------------------------------------------------------------------------------------------------
// global options

NETDATA.options = {
  pauseCallback: null,            // a callback when we are really paused

  pause: false,                   // when enabled we don't auto-refresh the charts

  targets: [],                    // an array of all the state objects that are
                                  // currently active (independently of their
                                  // viewport visibility)

  updated_dom: true,              // when true, the DOM has been updated with
                                  // new elements we have to check.

  auto_refresher_fast_weight: 0,  // this is the current time in ms, spent
                                  // rendering charts continuously.
                                  // used with .current.fast_render_timeframe

  page_is_visible: true,          // when true, this page is visible

  auto_refresher_stop_until: 0,   // timestamp in ms - used internally, to stop the
                                  // auto-refresher for some time (when a chart is
                                  // performing pan or zoom, we need to stop refreshing
                                  // all other charts, to have the maximum speed for
                                  // rendering the chart that is panned or zoomed).
                                  // Used with .current.global_pan_sync_time

  on_scroll_refresher_stop_until: 0, // timestamp in ms - used to stop evaluating
  // charts for some time, after a page scroll

  last_page_resize: Date.now(),   // the timestamp of the last resize request

  last_page_scroll: 0,            // the timestamp the last time the page was scrolled

  browser_timezone: (Intl && Intl.DateTimeFormat)
    ? Intl.DateTimeFormat().resolvedOptions().timeZone // timezone detected by javascript
    : "cannot-detect-it",

  server_timezone: 'unknown',     // timezone reported by the server

  force_data_points: 0,           // force the number of points to be returned for charts
  fake_chart_rendering: false,    // when set to true, the dashboard will download data but will not render the charts

  passive_events: null,           // true if the browser supports passive events

  // the current profile
  // we may have many...
  current: {
    units: 'auto',              // can be 'auto' or 'original'
    temperature: 'celsius',     // can be 'celsius' or 'fahrenheit'
    seconds_as_time: true,      // show seconds as DDd:HH:MM:SS ?
    timezone: 'default',        // the timezone to use, or 'default'
    user_set_server_timezone: 'default', // as set by the user on the dashboard

    legend_toolbox: true,       // show the legend toolbox on charts
    resize_charts: true,        // show the resize handler on charts

    pixels_per_point: isSlowDevice() ? 5 : 1, // the minimum pixels per point for all charts
    // increase this to speed javascript up
    // each chart library has its own limit too
    // the max of this and the chart library is used
    // the final is calculated every time, so a change
    // here will have immediate effect on the next chart
    // update

    idle_between_charts: 100,   // ms - how much time to wait between chart updates

    fast_render_timeframe: 200, // ms - render continuously until this time of continuous
                                // rendering has been reached
                                // this setting is used to make it render e.g. 10
                                // charts at once, sleep idle_between_charts time
                                // and continue for another 10 charts.

    idle_between_loops: 500,    // ms - if all charts have been updated, wait this
                                // time before starting again.

    idle_parallel_loops: 100,   // ms - the time between parallel refresher updates

    idle_lost_focus: 500,       // ms - when the window does not have focus, check
                                // if focus has been regained, every this time

    global_pan_sync_time: 300,  // ms - when you pan or zoom a chart, the background
                                // auto-refreshing of charts is paused for this amount
                                // of time

    sync_selection_delay: 400,  // ms - when you pan or zoom a chart, wait this amount
                                // of time before setting up synchronized selections
                                // on hover.

    sync_selection: true,       // enable or disable selection sync

    pan_and_zoom_delay: 50,     // when panning or zooming, how often to update the chart

    sync_pan_and_zoom: true,    // enable or disable pan and zoom sync

    pan_and_zoom_data_padding: true, // fetch more data for the master chart when panning or zooming

    update_only_visible: true,  // enable or disable visibility management / used for printing

    parallel_refresher: !isSlowDevice(), // enable parallel refresh of charts

    concurrent_refreshes: true, // when parallel_refresher is enabled, sync also the charts

    destroy_on_hide: isSlowDevice(), // destroy charts when they are not visible

    // when enabled the charts will show some help
    // when there's no bootstrap, we can't show it
    show_help: netdataShowHelp && !window.netdataNoBootstrap,
    show_help_delay_show_ms: 500,
    show_help_delay_hide_ms: 0,

    eliminate_zero_dimensions: true, // do not show dimensions with just zeros

    stop_updates_when_focus_is_lost: true, // boolean - shall we stop auto-refreshes when document does not have user focus
    stop_updates_while_resizing: 1000,  // ms - time to stop auto-refreshes while resizing the charts

    double_click_speed: 500,    // ms - time between clicks / taps to detect double click/tap

    smooth_plot: !isSlowDevice(), // enable smooth plot, where possible

    color_fill_opacity_line: 1.0,
    color_fill_opacity_area: 0.2,
    color_fill_opacity_fake_stacked: 1,
    color_fill_opacity_stacked: 0.8,

    pan_and_zoom_factor: 0.25,      // the increment when panning and zooming with the toolbox
    pan_and_zoom_factor_multiplier_control: 2.0,
    pan_and_zoom_factor_multiplier_shift: 3.0,
    pan_and_zoom_factor_multiplier_alt: 4.0,

    abort_ajax_on_scroll: false,            // kill pending ajax page scroll
    async_on_scroll: false,                 // sync/async onscroll handler
    onscroll_worker_duration_threshold: 30, // time in ms, for async scroll handler

    retries_on_data_failures: 3, // how many retries to make if we can't fetch chart data from the server

    setOptionCallback: function () {
    }
  },

  debug: {
    show_boxes: false,
    main_loop: false,
    focus: false,
    visibility: false,
    chart_data_url: false,
    chart_errors: true, // remember to set it to false before merging
    chart_timing: false,
    chart_calls: false,
    libraries: false,
    dygraph: false,
    globalSelectionSync: false,
    globalPanAndZoom: false
  }
};


NETDATA.statistics = {
  refreshes_total: 0,
  refreshes_active: 0,
  refreshes_active_max: 0
};

NETDATA.themes = {
  white: {
    bootstrap_css: "css/bootstrap-3.3.7.css",
    dashboard_css: "css/dashboard.css?v20180210-1",
    background: "#FFFFFF",
    foreground: "#000000",
    grid: "#F0F0F0",
    axis: "#F0F0F0",
    highlight: "#F5F5F5",
    colors: ["#3366CC", "#DC3912", "#109618", "#FF9900", "#990099", "#DD4477",
      "#3B3EAC", "#66AA00", "#0099C6", "#B82E2E", "#AAAA11", "#5574A6",
      "#994499", "#22AA99", "#6633CC", "#E67300", "#316395", "#8B0707",
      "#329262", "#3B3EAC"],
    easypiechart_track: "#f0f0f0",
    easypiechart_scale: "#dfe0e0",
    gauge_pointer: "#C0C0C0",
    gauge_stroke: "#F0F0F0",
    gauge_gradient: false,
    gauge_stop_color: "#FC8D5E",
    gauge_start_color: "#B0E952",
    d3pie: {
      title: "#333333",
      subtitle: "#666666",
      footer: "#888888",
      other: "#aaaaaa",
      mainlabel: "#333333",
      percentage: "#dddddd",
      value: "#aaaa22",
      tooltip_bg: "#000000",
      tooltip_fg: "#efefef",
      segment_stroke: "#ffffff",
      gradient_color: "#000000",
    },
  },
  slate: {
    bootstrap_css: "css/bootstrap-slate-flat-3.3.7.css?v20161229-1",
    dashboard_css: "css/dashboard.slate.css?v20180210-1",
    background: "#272b30",
    foreground: "#C8C8C8",
    grid: "#283236",
    axis: "#283236",
    highlight: "#383838",
    colors: ["#66AA00", "#FE3912", "#3366CC", "#D66300", "#0099C6", "#DDDD00",
      "#5054e6", "#EE9911", "#BB44CC", "#e45757", "#ef0aef", "#CC7700",
      "#22AA99", "#109618", "#905bfd", "#f54882", "#4381bf", "#ff3737",
      "#329262", "#3B3EFF"],
    easypiechart_track: "#373b40",
    easypiechart_scale: "#373b40",
    gauge_pointer: "#474b50",
    gauge_stroke: "#373b40",
    gauge_gradient: false,
    gauge_stop_color: "#FC8D5E",
    gauge_start_color: "#B0E952",
    d3pie: {
      title: "#C8C8C8",
      subtitle: "#283236",
      footer: "#283236",
      other: "#283236",
      mainlabel: "#C8C8C8",
      percentage: "#dddddd",
      value: "#cccc44",
      tooltip_bg: "#272b30",
      tooltip_fg: "#C8C8C8",
      segment_stroke: "#283236",
      gradient_color: "#000000",
    },
  },
}

// Codacy declarations
/* global netdataTheme */

NETDATA.updateTheme = function () {
  if (typeof window.netdataTheme !== 'undefined'
    && typeof NETDATA.themes[netdataTheme] !== 'undefined'
  ) {
    NETDATA.themes.current = NETDATA.themes[window.netdataTheme];
  } else {
    NETDATA.themes.current = NETDATA.themes.white;
  }

  NETDATA.colors = NETDATA.themes.current.colors;
}

NETDATA.updateTheme()

// these are the colors Google Charts are using
// we have them here to attempt emulate their look and feel on the other chart libraries
// http://there4.io/2012/05/02/google-chart-color-list/
//NETDATA.colors        = [ '#3366CC', '#DC3912', '#FF9900', '#109618', '#990099', '#3B3EAC', '#0099C6',
//                      '#DD4477', '#66AA00', '#B82E2E', '#316395', '#994499', '#22AA99', '#AAAA11',
//                      '#6633CC', '#E67300', '#8B0707', '#329262', '#5574A6', '#3B3EAC' ];

// an alternative set
// http://www.mulinblog.com/a-color-palette-optimized-for-data-visualization/
//                         (blue)     (red)      (orange)   (green)    (pink)     (brown)    (purple)   (yellow)   (gray)
//NETDATA.colors        = [ '#5DA5DA', '#F15854', '#FAA43A', '#60BD68', '#F17CB0', '#B2912F', '#B276B2', '#DECF3F', '#4D4D4D' ];
// dygraph

// local storage options

NETDATA.localStorage = {
  default: {},
  current: {},
  callback: {} // only used for resetting back to defaults
};


// todo temporary stuff which was originally in dashboard.js
// but needs to be refactored
NETDATA.name2id = function (s) {
  return s
  .replace(/ /g, '_')
  .replace(/:/g, '_')
  .replace(/\(/g, '_')
  .replace(/\)/g, '_')
  .replace(/\./g, '_')
  .replace(/\//g, '_');
};

NETDATA.globalChartUnderlay = {
  clear: () => {},
  init: () => {},
}

NETDATA.globalPanAndZoom = {
  callback: () => {},
}
NETDATA.unpause = () => {}


// ----------------------------------------------------------------------------------------------------------------
// XSS checks

NETDATA.xss = {
  enabled: (typeof netdataCheckXSS === 'undefined') ? false : netdataCheckXSS,
  enabled_for_data: (typeof netdataCheckXSS === 'undefined') ? false : netdataCheckXSS,

  string: function (s) {
    return s.toString()
    .replace(/</g, '&lt;')
    .replace(/>/g, '&gt;')
    .replace(/"/g, '&quot;')
    .replace(/'/g, '&#39;');
  },

  object: function (name, obj, ignore_regex) {
    if (typeof ignore_regex !== 'undefined' && ignore_regex.test(name)) {
      // console.log('XSS: ignoring "' + name + '"');
      return obj;
    }

    switch (typeof(obj)) {
      case 'string':
        const ret = this.string(obj);
        if (ret !== obj) {
          console.log('XSS protection changed string ' + name + ' from "' + obj + '" to "' + ret + '"');
        }
        return ret;

      case 'object':
        if (obj === null) {
          return obj;
        }

        if (Array.isArray(obj)) {
          // console.log('checking array "' + name + '"');

          let len = obj.length;
          while (len--) {
            obj[len] = this.object(name + '[' + len + ']', obj[len], ignore_regex);
          }
        } else {
          // console.log('checking object "' + name + '"');

          for (var i in obj) {
            if (obj.hasOwnProperty(i) === false) {
              continue;
            }
            if (this.string(i) !== i) {
              console.log('XSS protection removed invalid object member "' + name + '.' + i + '"');
              delete obj[i];
            } else {
              obj[i] = this.object(name + '.' + i, obj[i], ignore_regex);
            }
          }
        }
        return obj;

      default:
        return obj;
    }
  },

  checkOptional: function (name, obj, ignore_regex) {
    if (this.enabled) {
      //console.log('XSS: checking optional "' + name + '"...');
      return this.object(name, obj, ignore_regex);
    }
    return obj;
  },

  checkAlways: function (name, obj, ignore_regex) {
    //console.log('XSS: checking always "' + name + '"...');
    return this.object(name, obj, ignore_regex);
  },

  checkData: function (name, obj, ignore_regex) {
    if (this.enabled_for_data) {
      //console.log('XSS: checking data "' + name + '"...');
      return this.object(name, obj, ignore_regex);
    }
    return obj;
  }
};



const fixHost = (host) => {
  while (host.slice(-1) === '/') {
    host = host.substring(0, host.length - 1);
  }

  return host.replace(/\/v1\/?$/, "");
}

NETDATA.chartRegistry = {
  charts: {},

  globalReset: function () {
    this.charts = {};
  },

  add: function (host, id, data) {
    if (typeof this.charts[host] === 'undefined') {
      this.charts[host] = {};
    }

    //console.log('added ' + host + '/' + id);
    this.charts[host][id] = data;
  },

  get: function (host, id) {
    if (typeof this.charts[host] === 'undefined') {
      return null;
    }

    if (typeof this.charts[host][id] === 'undefined') {
      return null;
    }

    //console.log('cached ' + host + '/' + id);
    return this.charts[host][id];
  },

  downloadAll: function (host, callback) {
    host = fixHost(host);

    let self = this;

    function got_data(h, data, callback) {
      if (data !== null) {
        self.charts[h] = data.charts;
        window.charts = data.charts

        // update the server timezone in our options
        if (typeof data.timezone === 'string') {
          NETDATA.options.server_timezone = data.timezone;
        }
      } else {
        NETDATA.error(406, h + '/api/v1/charts');
      }

      if (typeof callback === 'function') {
        callback(data);
      }
    }

    if (window.netdataSnapshotData !== null) {
      got_data(host, window.netdataSnapshotData.charts, callback);
    } else {
      $.ajax({
        url: host + '/api/v1/charts',
        async: true,
        cache: false,
        xhrFields: {withCredentials: true} // required for the cookie
      })
      .done(function (data) {
        data = NETDATA.xss.checkOptional('/api/v1/charts', data);
        got_data(host, data, callback);
      })
      .fail(function () {
        NETDATA.error(405, host + '/api/v1/charts');

        if (typeof callback === 'function') {
          callback(null);
        }
      });
    }
  }
};


NETDATA.fixHost = function (host) {
  while (host.slice(-1) === '/') {
    host = host.substring(0, host.length - 1);
  }

  return host.replace(/\/v1\/?$/, "");
};


NETDATA.registryHello = function (host, callback) {
  host = NETDATA.fixHost(host);

  // send HELLO to a netdata server:
  // 1. verifies the server is reachable
  // 2. responds with the registry URL, the machine GUID of this netdata server and its hostname
  $.ajax({
    url: host + '/api/v1/registry?action=hello',
    async: true,
    cache: false,
    headers: {
      'Cache-Control': 'no-cache, no-store',
      'Pragma': 'no-cache'
    },
    xhrFields: {withCredentials: true} // required for the cookie
  })
  .done(function (data) {
    data = NETDATA.xss.checkOptional('/api/v1/registry?action=hello', data);

    if (typeof data.status !== 'string' || data.status !== 'ok') {
      // NETDATA.error(408, host + ' response: ' + JSON.stringify(data));
      data = null;
    }

    if (typeof callback === 'function') {
      return callback(data);
    }
  })
  .fail(function () {
    // NETDATA.error(407, host);

    if (typeof callback === 'function') {
      return callback(null);
    }
  });
}

NETDATA.registrySearch = function (machine_guid, getFromRegistry, serverDefault, callback) {
  // SEARCH for the URLs of a machine:
  $.ajax({
    url: getFromRegistry("registryServer") + '/api/v1/registry?action=search&machine='
      + getFromRegistry("machineGuid") + '&name=' + encodeURIComponent(getFromRegistry("hostname"))
      + '&url=' + encodeURIComponent(serverDefault) + '&for=' + machine_guid,
    async: true,
    cache: false,
    headers: {
      'Cache-Control': 'no-cache, no-store',
      'Pragma': 'no-cache'
    },
    xhrFields: {withCredentials: true} // required for the cookie
  })
  .done(function (data) {
    data = NETDATA.xss.checkAlways('/api/v1/registry?action=search', data);

    if (typeof data.status !== 'string' || data.status !== 'ok') {
      // NETDATA.error(417, getFromRegistry("registryServer") + ' responded with: ' + JSON.stringify(data));
      console.warn(getFromRegistry("registryServer") + ' responded with: ' + JSON.stringify(data));
      data = null;
    }

    if (typeof callback === 'function') {
      return callback(data);
    }
  })
  .fail(function () {
    // NETDATA.error(418, getFromRegistry("registryServer"));
    console.warn("registry search call failed", getFromRegistry("registryServer"))

    if (typeof callback === 'function') {
      return callback(null);
    }
  });
}

NETDATA.registryDelete = function (getFromRegistry, serverDefault, delete_url, callback) {
  // send DELETE to a netdata registry:
  $.ajax({
    url: getFromRegistry("registryServer") + '/api/v1/registry?action=delete&machine='
      + getFromRegistry("machineGuid") + '&name=' + encodeURIComponent(getFromRegistry("hostname"))
      + '&url=' + encodeURIComponent(serverDefault) + '&delete_url=' + encodeURIComponent(delete_url),
      // + '&url=' + encodeURIComponent("http://n5.katsuna.com:19999/") + '&delete_url=' + encodeURIComponent(delete_url),
    async: true,
    cache: false,
    headers: {
      'Cache-Control': 'no-cache, no-store',
      'Pragma': 'no-cache'
    },
    xhrFields: {withCredentials: true} // required for the cookie
  })
  .done(function (data) {
    // data = NETDATA.xss.checkAlways('/api/v1/registry?action=delete', data);

    if (typeof data.status !== 'string' || data.status !== 'ok') {
      // NETDATA.error(411, NETDATA.registry.server + ' responded with: ' + JSON.stringify(data));
      console.warn(411, getFromRegistry("registryServer") + ' responded with: ' + JSON.stringify(data));
      data = null;
    }

    if (typeof callback === 'function') {
      return callback(data);
    }
  })
  .fail(function () {
    // NETDATA.error(412, NETDATA.registry.server);
    console.warn(412, getFromRegistry("registryServer"));

    if (typeof callback === 'function') {
      return callback(null);
    }
  });
}


// NETDATA.currentScript = document.currentScript