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

   1 'use strict';
   2 'require rpc';
   3
   4 var callLuciRealtimeStats = rpc.declare({
   5         object: 'luci',
   6         method: 'getRealtimeStats',
   7         params: [ 'mode', 'device' ],
   8         expect: { result: [] }
   9 });
  10
  11 var graphPolls = [],
  12     pollInterval = 3;
  13
  14 Math.log2 = Math.log2 || function(x) { return Math.log(x) * Math.LOG2E; };
  15
  16 return L.view.extend({
  17         load: function() {
  18                 return Promise.all([
  19                         this.loadSVG(L.resource('load.svg'))
  20                 ]);
  21         },
  22
  23         updateGraph: function(svg, lines, cb) {
  24                 var G = svg.firstElementChild;
  25
  26                 var view = document.querySelector('#view');
  27
  28                 var width  = view.offsetWidth - 2;
  29                 var height = 300 - 2;
  30                 var step   = 5;
  31
  32                 var data_wanted = Math.floor(width / step);
  33
  34                 var data_values = [],
  35                     line_elements = [];
  36
  37                 for (var i = 0; i < lines.length; i++)
  38                         if (lines[i] != null)
  39                                 data_values.push([]);
  40
  41                 var info = {
  42                         line_current: [],
  43                         line_average: [],
  44                         line_peak:    []
  45                 };
  46
  47                 /* prefill datasets */
  48                 for (var i = 0; i < data_values.length; i++)
  49                         for (var j = 0; j < data_wanted; j++)
  50                                         data_values[i][j] = 0;
  51
  52                 /* plot horizontal time interval lines */
  53                 for (var i = width % (step * 60); i < width; i += step * 60) {
  54                         var line = document.createElementNS('http://www.w3.org/2000/svg', 'line');
  55                                 line.setAttribute('x1', i);
  56                                 line.setAttribute('y1', 0);
  57                                 line.setAttribute('x2', i);
  58                                 line.setAttribute('y2', '100%');
  59                                 line.setAttribute('style', 'stroke:black;stroke-width:0.1');
  60
  61                         var text = document.createElementNS('http://www.w3.org/2000/svg', 'text');
  62                                 text.setAttribute('x', i + 5);
  63                                 text.setAttribute('y', 15);
  64                                 text.setAttribute('style', 'fill:#eee; font-size:9pt; font-family:sans-serif; text-shadow:1px 1px 1px #000');
  65                                 text.appendChild(document.createTextNode(Math.round((width - i) / step / 60) + 'm'));
  66
  67                         G.appendChild(line);
  68                         G.appendChild(text);
  69                 }
  70
  71                 info.interval = pollInterval;
  72                 info.timeframe = data_wanted / 60;
  73
  74                 graphPolls.push({
  75                         svg:    svg,
  76                         lines:  lines,
  77                         cb:     cb,
  78                         info:   info,
  79                         width:  width,
  80                         height: height,
  81                         step:   step,
  82                         values: data_values,
  83                         timestamp: 0,
  84                         fill: 1
  85                 });
  86         },
  87
  88         pollData: function() {
  89                 L.Poll.add(L.bind(function() {
  90                         var tasks = [];
  91
  92                         for (var i = 0; i < graphPolls.length; i++) {
  93                                 var ctx = graphPolls[i];
  94                                 tasks.push(L.resolveDefault(callLuciRealtimeStats('load'), []));
  95                         }
  96
  97                         return Promise.all(tasks).then(L.bind(function(datasets) {
  98                                 for (var gi = 0; gi < graphPolls.length; gi++) {
  99                                         var ctx = graphPolls[gi],
 100                                             data = datasets[gi],
 101                                             values = ctx.values,
 102                                             lines = ctx.lines,
 103                                             info = ctx.info;
 104
 105                                         var data_scale = 0;
 106                                         var data_wanted = Math.floor(ctx.width / ctx.step);
 107                                         var last_timestamp = NaN;
 108
 109                                         for (var i = 0, di = 0; di < lines.length; di++) {
 110                                                 if (lines[di] == null)
 111                                                         continue;
 112
 113                                                 var multiply = (lines[di].multiply != null) ? lines[di].multiply : 1,
 114                                                     offset = (lines[di].offset != null) ? lines[di].offset : 0;
 115
 116                                                 for (var j = ctx.timestamp ? 0 : 1; j < data.length; j++) {
 117                                                         /* skip overlapping entries */
 118                                                         if (data[j][0] <= ctx.timestamp)
 119                                                                 continue;
 120
 121                                                         if (i == 0) {
 122                                                                 ctx.fill++;
 123                                                                 last_timestamp = data[j][0];
 124                                                         }
 125
 126                                                         info.line_current[i] = data[j][di + 1] * multiply;
 127                                                         info.line_current[i] -= Math.min(info.line_current[i], offset);
 128                                                         values[i].push(info.line_current[i]);
 129                                                 }
 130
 131                                                 i++;
 132                                         }
 133
 134                                         /* cut off outdated entries */
 135                                         ctx.fill = Math.min(ctx.fill, data_wanted);
 136
 137                                         for (var i = 0; i < values.length; i++) {
 138                                                 var len = values[i].length;
 139                                                 values[i] = values[i].slice(len - data_wanted, len);
 140
 141                                                 /* find peaks, averages */
 142                                                 info.line_peak[i] = NaN;
 143                                                 info.line_average[i] = 0;
 144
 145                                                 for (var j = 0; j < values[i].length; j++) {
 146                                                         info.line_peak[i] = isNaN(info.line_peak[i]) ? values[i][j] : Math.max(info.line_peak[i], values[i][j]);
 147                                                         info.line_average[i] += values[i][j];
 148                                                 }
 149
 150                                                 info.line_average[i] = info.line_average[i] / ctx.fill;
 151                                         }
 152
 153                                         info.peak = Math.max.apply(Math, info.line_peak);
 154
 155                                         /* remember current timestamp, calculate horizontal scale */
 156                                         if (!isNaN(last_timestamp))
 157                                                 ctx.timestamp = last_timestamp;
 158
 159                                         var size = Math.floor(Math.log2(info.peak)),
 160                                             div = Math.pow(2, size - (size % 10)),
 161                                             mult = info.peak / div,
 162                                             mult = (mult < 5) ? 2 : ((mult < 50) ? 10 : ((mult < 500) ? 100 : 1000));
 163
 164                                         info.peak = info.peak + (mult * div) - (info.peak % (mult * div));
 165
 166                                         data_scale = ctx.height / info.peak;
 167
 168                                         /* plot data */
 169                                         for (var i = 0, di = 0; di < lines.length; di++) {
 170                                                 if (lines[di] == null)
 171                                                         continue;
 172
 173                                                 var el = ctx.svg.firstElementChild.getElementById(lines[di].line),
 174                                                     pt = '0,' + ctx.height,
 175                                                     y = 0;
 176
 177                                                 if (!el)
 178                                                         continue;
 179
 180                                                 for (var j = 0; j < values[i].length; j++) {
 181                                                         var x = j * ctx.step;
 182
 183                                                         y = ctx.height - Math.floor(values[i][j] * data_scale);
 184                                                         //y -= Math.floor(y % (1 / data_scale));
 185
 186                                                         pt += ' ' + x + ',' + y;
 187                                                 }
 188
 189                                                 pt += ' ' + ctx.width + ',' + y + ' ' + ctx.width + ',' + ctx.height;
 190
 191                                                 el.setAttribute('points', pt);
 192
 193                                                 i++;
 194                                         }
 195
 196                                         info.label_25 = 0.25 * info.peak;
 197                                         info.label_50 = 0.50 * info.peak;
 198                                         info.label_75 = 0.75 * info.peak;
 199
 200                                         if (typeof(ctx.cb) == 'function')
 201                                                 ctx.cb(ctx.svg, info);
 202                                 }
 203                         }, this));
 204                 }, this), pollInterval);
 205         },
 206
 207         loadSVG: function(src) {
 208                 return L.Request.get(src).then(function(response) {
 209                         if (!response.ok)
 210                                 throw new Error(response.statusText);
 211
 212                         return E('div', {
 213                                 'style': 'width:100%;height:300px;border:1px solid #000;background:#fff'
 214                         }, E(response.text()));
 215                 });
 216         },
 217
 218         render: function(data) {
 219                 var svg = data[0];
 220
 221                 var v = E([], [
 222                         svg,
 223                         E('div', { 'class': 'right' }, E('small', { 'id': 'scale' }, '-')),
 224                         E('br'),
 225
 226                         E('div', { 'class': 'table', 'style': 'width:100%;table-layout:fixed' }, [
 227                                 E('div', { 'class': 'tr' }, [
 228                                         E('div', { 'class': 'td right top' }, E('strong', { 'style': 'border-bottom:2px solid #f00' }, [ _('1 Minute Load:') ])),
 229                                         E('div', { 'class': 'td', 'id': 'lb_load01_cur' }, [ '0.00' ]),
 230
 231                                         E('div', { 'class': 'td right top' }, E('strong', {}, [ _('Average:') ])),
 232                                         E('div', { 'class': 'td', 'id': 'lb_load01_avg' }, [ '0.00' ]),
 233
 234                                         E('div', { 'class': 'td right top' }, E('strong', {}, [ _('Peak:') ])),
 235                                         E('div', { 'class': 'td', 'id': 'lb_load01_peak' }, [ '0.00' ])
 236                                 ]),
 237                                 E('div', { 'class': 'tr' }, [
 238                                         E('div', { 'class': 'td right top' }, E('strong', { 'style': 'border-bottom:2px solid #f60' }, [ _('5 Minute Load:') ])),
 239                                         E('div', { 'class': 'td', 'id': 'lb_load05_cur' }, [ '0.00' ]),
 240
 241                                         E('div', { 'class': 'td right top' }, E('strong', {}, [ _('Average:') ])),
 242                                         E('div', { 'class': 'td', 'id': 'lb_load05_avg' }, [ '0.00' ]),
 243
 244                                         E('div', { 'class': 'td right top' }, E('strong', {}, [ _('Peak:') ])),
 245                                         E('div', { 'class': 'td', 'id': 'lb_load05_peak' }, [ '0.00' ])
 246                                 ]),
 247                                 E('div', { 'class': 'tr' }, [
 248                                         E('div', { 'class': 'td right top' }, E('strong', { 'style': 'border-bottom:2px solid #fa0' }, [ _('15 Minute Load:') ])),
 249                                         E('div', { 'class': 'td', 'id': 'lb_load15_cur' }, [ '0.00' ]),
 250
 251                                         E('div', { 'class': 'td right top' }, E('strong', {}, [ _('Average:') ])),
 252                                         E('div', { 'class': 'td', 'id': 'lb_load15_avg' }, [ '0.00' ]),
 253
 254                                         E('div', { 'class': 'td right top' }, E('strong', {}, [ _('Peak:') ])),
 255                                         E('div', { 'class': 'td', 'id': 'lb_load15_peak' }, [ '0.00' ])
 256                                 ])
 257                         ])
 258                 ]);
 259
 260                 this.updateGraph(svg, [ { line: 'load01' }, { line: 'load05' }, { line: 'load15' } ], function(svg, info) {
 261                         var G = svg.firstElementChild, tab = svg.parentNode;
 262
 263                         G.getElementById('label_25').firstChild.data = '%.2f'.format(info.label_25 / 100);
 264                         G.getElementById('label_50').firstChild.data = '%.2f'.format(info.label_50 / 100);
 265                         G.getElementById('label_75').firstChild.data = '%.2f'.format(info.label_75 / 100);
 266
 267                         tab.querySelector('#scale').firstChild.data = _('(%d minute window, %d second interval)').format(info.timeframe, info.interval);
 268
 269                         tab.querySelector('#lb_load01_cur').firstChild.data = '%.2f'.format(info.line_current[0] / 100);
 270                         tab.querySelector('#lb_load01_avg').firstChild.data = '%.2f'.format(info.line_average[0] / 100);
 271                         tab.querySelector('#lb_load01_peak').firstChild.data = '%.2f'.format(info.line_peak[0] / 100);
 272
 273                         tab.querySelector('#lb_load05_cur').firstChild.data = '%.2f'.format(info.line_current[1] / 100);
 274                         tab.querySelector('#lb_load05_avg').firstChild.data = '%.2f'.format(info.line_average[1] / 100);
 275                         tab.querySelector('#lb_load05_peak').firstChild.data = '%.2f'.format(info.line_peak[1] / 100);
 276
 277                         tab.querySelector('#lb_load15_cur').firstChild.data = '%.2f'.format(info.line_current[2] / 100);
 278                         tab.querySelector('#lb_load15_avg').firstChild.data = '%.2f'.format(info.line_average[2] / 100);
 279                         tab.querySelector('#lb_load15_peak').firstChild.data = '%.2f'.format(info.line_peak[2] / 100);
 280                 });
 281
 282                 this.pollData();
 283
 284                 return v;
 285         },
 286
 287         handleSaveApply: null,
 288         handleSave: null,
 289         handleReset: null
 290 });