modules/luci-mod-status/htdocs/luci-static/resources/view/status/bandwidth.js

   1 'use strict';
   2 'require ui';
   3 'require rpc';
   4 'require network';
   5
   6 var callLuciRealtimeStats = rpc.declare({
   7         object: 'luci',
   8         method: 'getRealtimeStats',
   9         params: [ 'mode', 'device' ],
  10         expect: { result: [] }
  11 });
  12
  13 var graphPolls = [],
  14     pollInterval = 3;
  15
  16 Math.log2 = Math.log2 || function(x) { return Math.log(x) * Math.LOG2E; };
  17
  18 function rate(n, br) {
  19         n = (n || 0).toFixed(2);
  20         return [ '%1024.2mbit/s'.format(n * 8), br ? E('br') : ' ', '(%1024.2mB/s)'.format(n) ]
  21 }
  22
  23 return L.view.extend({
  24         load: function() {
  25                 return Promise.all([
  26                         this.loadSVG(L.resource('bandwidth.svg')),
  27                         network.getDevices()
  28                 ]);
  29         },
  30
  31         updateGraph: function(ifname, svg, lines, cb) {
  32                 var G = svg.firstElementChild;
  33
  34                 var view = document.querySelector('#view');
  35
  36                 var width  = view.offsetWidth - 2;
  37                 var height = 300 - 2;
  38                 var step   = 5;
  39
  40                 var data_wanted = Math.floor(width / step);
  41
  42                 var data_values = [],
  43                     line_elements = [];
  44
  45                 for (var i = 0; i < lines.length; i++)
  46                         if (lines[i] != null)
  47                                 data_values.push([]);
  48
  49                 var info = {
  50                         line_current: [],
  51                         line_average: [],
  52                         line_peak:    []
  53                 };
  54
  55                 /* prefill datasets */
  56                 for (var i = 0; i < data_values.length; i++)
  57                         for (var j = 0; j < data_wanted; j++)
  58                                         data_values[i][j] = 0;
  59
  60                 /* plot horizontal time interval lines */
  61                 for (var i = width % (step * 60); i < width; i += step * 60) {
  62                         var line = document.createElementNS('http://www.w3.org/2000/svg', 'line');
  63                                 line.setAttribute('x1', i);
  64                                 line.setAttribute('y1', 0);
  65                                 line.setAttribute('x2', i);
  66                                 line.setAttribute('y2', '100%');
  67                                 line.setAttribute('style', 'stroke:black;stroke-width:0.1');
  68
  69                         var text = document.createElementNS('http://www.w3.org/2000/svg', 'text');
  70                                 text.setAttribute('x', i + 5);
  71                                 text.setAttribute('y', 15);
  72                                 text.setAttribute('style', 'fill:#eee; font-size:9pt; font-family:sans-serif; text-shadow:1px 1px 1px #000');
  73                                 text.appendChild(document.createTextNode(Math.round((width - i) / step / 60) + 'm'));
  74
  75                         G.appendChild(line);
  76                         G.appendChild(text);
  77                 }
  78
  79                 info.interval = pollInterval;
  80                 info.timeframe = data_wanted / 60;
  81
  82                 graphPolls.push({
  83                         ifname: ifname,
  84                         svg:    svg,
  85                         lines:  lines,
  86                         cb:     cb,
  87                         info:   info,
  88                         width:  width,
  89                         height: height,
  90                         step:   step,
  91                         values: data_values,
  92                         timestamp: 0,
  93                         fill: 1
  94                 });
  95         },
  96
  97         pollData: function() {
  98                 L.Poll.add(L.bind(function() {
  99                         var tasks = [];
 100
 101                         for (var i = 0; i < graphPolls.length; i++) {
 102                                 var ctx = graphPolls[i];
 103                                 tasks.push(L.resolveDefault(callLuciRealtimeStats('interface', ctx.ifname), []));
 104                         }
 105
 106                         return Promise.all(tasks).then(L.bind(function(datasets) {
 107                                 for (var gi = 0; gi < graphPolls.length; gi++) {
 108                                         var ctx = graphPolls[gi],
 109                                             data = datasets[gi],
 110                                             values = ctx.values,
 111                                             lines = ctx.lines,
 112                                             info = ctx.info;
 113
 114                                         var data_scale = 0;
 115                                         var data_wanted = Math.floor(ctx.width / ctx.step);
 116                                         var last_timestamp = NaN;
 117
 118                                         for (var i = 0, di = 0; di < lines.length; di++) {
 119                                                 if (lines[di] == null)
 120                                                         continue;
 121
 122                                                 var multiply = (lines[di].multiply != null) ? lines[di].multiply : 1,
 123                                                     offset = (lines[di].offset != null) ? lines[di].offset : 0;
 124
 125                                                 for (var j = ctx.timestamp ? 0 : 1; j < data.length; j++) {
 126                                                         /* skip overlapping entries */
 127                                                         if (data[j][0] <= ctx.timestamp)
 128                                                                 continue;
 129
 130                                                         if (i == 0) {
 131                                                                 ctx.fill++;
 132                                                                 last_timestamp = data[j][0];
 133                                                         }
 134
 135                                                         if (lines[di].counter) {
 136                                                                 /* normalize difference against time interval */
 137                                                                 if (j > 0) {
 138                                                                         var time_delta = data[j][0] - data[j - 1][0];
 139                                                                         if (time_delta) {
 140                                                                                 info.line_current[i] = (data[j][di + 1] * multiply - data[j - 1][di + 1] * multiply) / time_delta;
 141                                                                                 info.line_current[i] -= Math.min(info.line_current[i], offset);
 142                                                                                 values[i].push(info.line_current[i]);
 143                                                                         }
 144                                                                 }
 145                                                         }
 146                                                         else {
 147                                                                 info.line_current[i] = data[j][di + 1] * multiply;
 148                                                                 info.line_current[i] -= Math.min(info.line_current[i], offset);
 149                                                                 values[i].push(info.line_current[i]);
 150                                                         }
 151                                                 }
 152
 153                                                 i++;
 154                                         }
 155
 156                                         /* cut off outdated entries */
 157                                         ctx.fill = Math.min(ctx.fill, data_wanted);
 158
 159                                         for (var i = 0; i < values.length; i++) {
 160                                                 var len = values[i].length;
 161                                                 values[i] = values[i].slice(len - data_wanted, len);
 162
 163                                                 /* find peaks, averages */
 164                                                 info.line_peak[i] = NaN;
 165                                                 info.line_average[i] = 0;
 166
 167                                                 for (var j = 0; j < values[i].length; j++) {
 168                                                         info.line_peak[i] = isNaN(info.line_peak[i]) ? values[i][j] : Math.max(info.line_peak[i], values[i][j]);
 169                                                         info.line_average[i] += values[i][j];
 170                                                 }
 171
 172                                                 info.line_average[i] = info.line_average[i] / ctx.fill;
 173                                         }
 174
 175                                         info.peak = Math.max.apply(Math, info.line_peak);
 176
 177                                         /* remember current timestamp, calculate horizontal scale */
 178                                         if (!isNaN(last_timestamp))
 179                                                 ctx.timestamp = last_timestamp;
 180
 181                                         var size = Math.floor(Math.log2(info.peak)),
 182                                             div = Math.pow(2, size - (size % 10)),
 183                                             mult = info.peak / div,
 184                                             mult = (mult < 5) ? 2 : ((mult < 50) ? 10 : ((mult < 500) ? 100 : 1000));
 185
 186                                         info.peak = info.peak + (mult * div) - (info.peak % (mult * div));
 187
 188                                         data_scale = ctx.height / info.peak;
 189
 190                                         /* plot data */
 191                                         for (var i = 0, di = 0; di < lines.length; di++) {
 192                                                 if (lines[di] == null)
 193                                                         continue;
 194
 195                                                 var el = ctx.svg.firstElementChild.getElementById(lines[di].line),
 196                                                     pt = '0,' + ctx.height,
 197                                                     y = 0;
 198
 199                                                 if (!el)
 200                                                         continue;
 201
 202                                                 for (var j = 0; j < values[i].length; j++) {
 203                                                         var x = j * ctx.step;
 204
 205                                                         y = ctx.height - Math.floor(values[i][j] * data_scale);
 206                                                         //y -= Math.floor(y % (1 / data_scale));
 207
 208                                                         pt += ' ' + x + ',' + y;
 209                                                 }
 210
 211                                                 pt += ' ' + ctx.width + ',' + y + ' ' + ctx.width + ',' + ctx.height;
 212
 213                                                 el.setAttribute('points', pt);
 214
 215                                                 i++;
 216                                         }
 217
 218                                         info.label_25 = 0.25 * info.peak;
 219                                         info.label_50 = 0.50 * info.peak;
 220                                         info.label_75 = 0.75 * info.peak;
 221
 222                                         if (typeof(ctx.cb) == 'function')
 223                                                 ctx.cb(ctx.svg, info);
 224                                 }
 225                         }, this));
 226                 }, this), pollInterval);
 227         },
 228
 229         loadSVG: function(src) {
 230                 return L.Request.get(src).then(function(response) {
 231                         if (!response.ok)
 232                                 throw new Error(response.statusText);
 233
 234                         return E('div', {
 235                                 'style': 'width:100%;height:300px;border:1px solid #000;background:#fff'
 236                         }, response.text());
 237                 });
 238         },
 239
 240         render: function(data) {
 241                 var svg = data[0],
 242                     devs = data[1];
 243
 244                 var v = E('div', {}, E('div'));
 245
 246                 for (var i = 0; i < devs.length; i++) {
 247                         var ifname = devs[i].getName();
 248
 249                         if (!ifname)
 250                                 continue;
 251
 252                         var csvg = svg.cloneNode(true);
 253
 254                         v.firstElementChild.appendChild(E('div', { 'data-tab': ifname, 'data-tab-title': ifname }, [
 255                                 csvg,
 256                                 E('div', { 'class': 'right' }, E('small', { 'id': 'scale' }, '-')),
 257                                 E('br'),
 258
 259                                 E('div', { 'class': 'table', 'style': 'width:100%;table-layout:fixed' }, [
 260                                         E('div', { 'class': 'tr' }, [
 261                                                 E('div', { 'class': 'td right top' }, E('strong', { 'style': 'border-bottom:2px solid blue' }, [ _('Inbound:') ])),
 262                                                 E('div', { 'class': 'td', 'id': 'rx_bw_cur' }, rate(0, true)),
 263
 264                                                 E('div', { 'class': 'td right top' }, E('strong', {}, [ _('Average:') ])),
 265                                                 E('div', { 'class': 'td', 'id': 'rx_bw_avg' }, rate(0, true)),
 266
 267                                                 E('div', { 'class': 'td right top' }, E('strong', {}, [ _('Peak:') ])),
 268                                                 E('div', { 'class': 'td', 'id': 'rx_bw_peak' }, rate(0, true))
 269                                         ]),
 270                                         E('div', { 'class': 'tr' }, [
 271                                                 E('div', { 'class': 'td right top' }, E('strong', { 'style': 'border-bottom:2px solid green' }, [ _('Outbound:') ])),
 272                                                 E('div', { 'class': 'td', 'id': 'tx_bw_cur' }, rate(0, true)),
 273
 274                                                 E('div', { 'class': 'td right top' }, E('strong', {}, [ _('Average:') ])),
 275                                                 E('div', { 'class': 'td', 'id': 'tx_bw_avg' }, rate(0, true)),
 276
 277                                                 E('div', { 'class': 'td right top' }, E('strong', {}, [ _('Peak:') ])),
 278                                                 E('div', { 'class': 'td', 'id': 'tx_bw_peak' }, rate(0, true))
 279                                         ])
 280                                 ])
 281                         ]));
 282
 283                         this.updateGraph(ifname, csvg, [ { line: 'rx', counter: true }, null, { line: 'tx', counter: true } ], function(svg, info) {
 284                                 var G = svg.firstElementChild, tab = svg.parentNode;
 285
 286                                 G.getElementById('label_25').firstChild.data = rate(info.label_25).join('');
 287                                 G.getElementById('label_50').firstChild.data = rate(info.label_50).join('');
 288                                 G.getElementById('label_75').firstChild.data = rate(info.label_75).join('');
 289
 290                                 tab.querySelector('#scale').firstChild.data = _('(%d minute window, %d second interval)').format(info.timeframe, info.interval);
 291
 292                                 L.dom.content(tab.querySelector('#rx_bw_cur'), rate(info.line_current[0], true));
 293                                 L.dom.content(tab.querySelector('#rx_bw_avg'), rate(info.line_average[0], true));
 294                                 L.dom.content(tab.querySelector('#rx_bw_peak'), rate(info.line_peak[0], true));
 295
 296                                 L.dom.content(tab.querySelector('#tx_bw_cur'), rate(info.line_current[1], true));
 297                                 L.dom.content(tab.querySelector('#tx_bw_avg'), rate(info.line_average[1], true));
 298                                 L.dom.content(tab.querySelector('#tx_bw_peak'), rate(info.line_peak[1], true));
 299                         });
 300                 }
 301
 302                 ui.tabs.initTabGroup(v.firstElementChild.childNodes);
 303
 304                 this.pollData();
 305
 306                 return v;
 307         },
 308
 309         handleSaveApply: null,
 310         handleSave: null,
 311         handleReset: null
 312 });