1 files changed, 290 insertions, 0 deletions
diff --git a/modules/luci-mod-status/htdocs/luci-static/resources/view/status/load.js b/modules/luci-mod-status/htdocs/luci-static/resources/view/status/load.js
new file mode 100644
index 000000000..a1ed43478
--- /dev/null
+++ b/modules/luci-mod-status/htdocs/luci-static/resources/view/status/load.js
@@ -0,0 +1,290 @@
+'use strict';
+'require rpc';
+
+var callLuciRealtimeStats = rpc.declare({
+	object: 'luci',
+	method: 'getRealtimeStats',
+	params: [ 'mode', 'device' ],
+	expect: { result: [] }
+});
+
+var graphPolls = [],
+    pollInterval = 3;
+
+Math.log2 = Math.log2 || function(x) { return Math.log(x) * Math.LOG2E; };
+
+return L.view.extend({
+	load: function() {
+		return Promise.all([
+			this.loadSVG(L.resource('load.svg'))
+		]);
+	},
+
+	updateGraph: function(svg, lines, cb) {
+		var G = svg.firstElementChild;
+
+		var view = document.querySelector('#view');
+
+		var width  = view.offsetWidth - 2;
+		var height = 300 - 2;
+		var step   = 5;
+
+		var data_wanted = Math.floor(width / step);
+
+		var data_values = [],
+		    line_elements = [];
+
+		for (var i = 0; i < lines.length; i++)
+			if (lines[i] != null)
+				data_values.push([]);
+
+		var info = {
+			line_current: [],
+			line_average: [],
+			line_peak:    []
+		};
+
+		/* prefill datasets */
+		for (var i = 0; i < data_values.length; i++)
+			for (var j = 0; j < data_wanted; j++)
+					data_values[i][j] = 0;
+
+		/* plot horizontal time interval lines */
+		for (var i = width % (step * 60); i < width; i += step * 60) {
+			var line = document.createElementNS('http://www.w3.org/2000/svg', 'line');
+				line.setAttribute('x1', i);
+				line.setAttribute('y1', 0);
+				line.setAttribute('x2', i);
+				line.setAttribute('y2', '100%');
+				line.setAttribute('style', 'stroke:black;stroke-width:0.1');
+
+			var text = document.createElementNS('http://www.w3.org/2000/svg', 'text');
+				text.setAttribute('x', i + 5);
+				text.setAttribute('y', 15);
+				text.setAttribute('style', 'fill:#eee; font-size:9pt; font-family:sans-serif; text-shadow:1px 1px 1px #000');
+				text.appendChild(document.createTextNode(Math.round((width - i) / step / 60) + 'm'));
+
+			G.appendChild(line);
+			G.appendChild(text);
+		}
+
+		info.interval = pollInterval;
+		info.timeframe = data_wanted / 60;
+
+		graphPolls.push({
+			svg:    svg,
+			lines:  lines,
+			cb:     cb,
+			info:   info,
+			width:  width,
+			height: height,
+			step:   step,
+			values: data_values,
+			timestamp: 0,
+			fill: 1
+		});
+	},
+
+	pollData: function() {
+		L.Poll.add(L.bind(function() {
+			var tasks = [];
+
+			for (var i = 0; i < graphPolls.length; i++) {
+				var ctx = graphPolls[i];
+				tasks.push(L.resolveDefault(callLuciRealtimeStats('load'), []));
+			}
+
+			return Promise.all(tasks).then(L.bind(function(datasets) {
+				for (var gi = 0; gi < graphPolls.length; gi++) {
+					var ctx = graphPolls[gi],
+					    data = datasets[gi],
+					    values = ctx.values,
+					    lines = ctx.lines,
+					    info = ctx.info;
+
+					var data_scale = 0;
+					var data_wanted = Math.floor(ctx.width / ctx.step);
+					var last_timestamp = NaN;
+
+					for (var i = 0, di = 0; di < lines.length; di++) {
+						if (lines[di] == null)
+							continue;
+
+						var multiply = (lines[di].multiply != null) ? lines[di].multiply : 1,
+						    offset = (lines[di].offset != null) ? lines[di].offset : 0;
+
+						for (var j = ctx.timestamp ? 0 : 1; j < data.length; j++) {
+							/* skip overlapping entries */
+							if (data[j][0] <= ctx.timestamp)
+								continue;
+
+							if (i == 0) {
+								ctx.fill++;
+								last_timestamp = data[j][0];
+							}
+
+							info.line_current[i] = data[j][di + 1] * multiply;
+							info.line_current[i] -= Math.min(info.line_current[i], offset);
+							values[i].push(info.line_current[i]);
+						}
+
+						i++;
+					}
+
+					/* cut off outdated entries */
+					ctx.fill = Math.min(ctx.fill, data_wanted);
+
+					for (var i = 0; i < values.length; i++) {
+						var len = values[i].length;
+						values[i] = values[i].slice(len - data_wanted, len);
+
+						/* find peaks, averages */
+						info.line_peak[i] = NaN;
+						info.line_average[i] = 0;
+
+						for (var j = 0; j < values[i].length; j++) {
+							info.line_peak[i] = isNaN(info.line_peak[i]) ? values[i][j] : Math.max(info.line_peak[i], values[i][j]);
+							info.line_average[i] += values[i][j];
+						}
+
+						info.line_average[i] = info.line_average[i] / ctx.fill;
+					}
+
+					info.peak = Math.max.apply(Math, info.line_peak);
+
+					/* remember current timestamp, calculate horizontal scale */
+					if (!isNaN(last_timestamp))
+						ctx.timestamp = last_timestamp;
+
+					var size = Math.floor(Math.log2(info.peak)),
+					    div = Math.pow(2, size - (size % 10)),
+					    mult = info.peak / div,
+					    mult = (mult < 5) ? 2 : ((mult < 50) ? 10 : ((mult < 500) ? 100 : 1000));
+
+					info.peak = info.peak + (mult * div) - (info.peak % (mult * div));
+
+					data_scale = ctx.height / info.peak;
+
+					/* plot data */
+					for (var i = 0, di = 0; di < lines.length; di++) {
+						if (lines[di] == null)
+							continue;
+
+						var el = ctx.svg.firstElementChild.getElementById(lines[di].line),
+						    pt = '0,' + ctx.height,
+						    y = 0;
+
+						if (!el)
+							continue;
+
+						for (var j = 0; j < values[i].length; j++) {
+							var x = j * ctx.step;
+
+							y = ctx.height - Math.floor(values[i][j] * data_scale);
+							//y -= Math.floor(y % (1 / data_scale));
+
+							pt += ' ' + x + ',' + y;
+						}
+
+						pt += ' ' + ctx.width + ',' + y + ' ' + ctx.width + ',' + ctx.height;
+
+						el.setAttribute('points', pt);
+
+						i++;
+					}
+
+					info.label_25 = 0.25 * info.peak;
+					info.label_50 = 0.50 * info.peak;
+					info.label_75 = 0.75 * info.peak;
+
+					if (typeof(ctx.cb) == 'function')
+						ctx.cb(ctx.svg, info);
+				}
+			}, this));
+		}, this), pollInterval);
+	},
+
+	loadSVG: function(src) {
+		return L.Request.get(src).then(function(response) {
+			if (!response.ok)
+				throw new Error(response.statusText);
+
+			return E('div', {
+				'style': 'width:100%;height:300px;border:1px solid #000;background:#fff'
+			}, response.text());
+		});
+	},
+
+	render: function(data) {
+		var svg = data[0];
+
+		var v = E([], [
+			svg,
+			E('div', { 'class': 'right' }, E('small', { 'id': 'scale' }, '-')),
+			E('br'),
+
+			E('div', { 'class': 'table', 'style': 'width:100%;table-layout:fixed' }, [
+				E('div', { 'class': 'tr' }, [
+					E('div', { 'class': 'td right top' }, E('strong', { 'style': 'border-bottom:2px solid #f00' }, [ _('1 Minute Load:') ])),
+					E('div', { 'class': 'td', 'id': 'lb_load01_cur' }, [ '0.00' ]),
+
+					E('div', { 'class': 'td right top' }, E('strong', {}, [ _('Average:') ])),
+					E('div', { 'class': 'td', 'id': 'lb_load01_avg' }, [ '0.00' ]),
+
+					E('div', { 'class': 'td right top' }, E('strong', {}, [ _('Peak:') ])),
+					E('div', { 'class': 'td', 'id': 'lb_load01_peak' }, [ '0.00' ])
+				]),
+				E('div', { 'class': 'tr' }, [
+					E('div', { 'class': 'td right top' }, E('strong', { 'style': 'border-bottom:2px solid #f60' }, [ _('5 Minute Load:') ])),
+					E('div', { 'class': 'td', 'id': 'lb_load05_cur' }, [ '0.00' ]),
+
+					E('div', { 'class': 'td right top' }, E('strong', {}, [ _('Average:') ])),
+					E('div', { 'class': 'td', 'id': 'lb_load05_avg' }, [ '0.00' ]),
+
+					E('div', { 'class': 'td right top' }, E('strong', {}, [ _('Peak:') ])),
+					E('div', { 'class': 'td', 'id': 'lb_load05_peak' }, [ '0.00' ])
+				]),
+				E('div', { 'class': 'tr' }, [
+					E('div', { 'class': 'td right top' }, E('strong', { 'style': 'border-bottom:2px solid #fa0' }, [ _('15 Minute Load:') ])),
+					E('div', { 'class': 'td', 'id': 'lb_load15_cur' }, [ '0.00' ]),
+
+					E('div', { 'class': 'td right top' }, E('strong', {}, [ _('Average:') ])),
+					E('div', { 'class': 'td', 'id': 'lb_load15_avg' }, [ '0.00' ]),
+
+					E('div', { 'class': 'td right top' }, E('strong', {}, [ _('Peak:') ])),
+					E('div', { 'class': 'td', 'id': 'lb_load15_peak' }, [ '0.00' ])
+				])
+			])
+		]);
+
+		this.updateGraph(svg, [ { line: 'load01' }, { line: 'load05' }, { line: 'load15' } ], function(svg, info) {
+			var G = svg.firstElementChild, tab = svg.parentNode;
+
+			G.getElementById('label_25').firstChild.data = '%.2f'.format(info.label_25 / 100);
+			G.getElementById('label_50').firstChild.data = '%.2f'.format(info.label_50 / 100);
+			G.getElementById('label_75').firstChild.data = '%.2f'.format(info.label_75 / 100);
+
+			tab.querySelector('#scale').firstChild.data = _('(%d minute window, %d second interval)').format(info.timeframe, info.interval);
+
+			tab.querySelector('#lb_load01_cur').firstChild.data = '%.2f'.format(info.line_current[0] / 100);
+			tab.querySelector('#lb_load01_avg').firstChild.data = '%.2f'.format(info.line_average[0] / 100);
+			tab.querySelector('#lb_load01_peak').firstChild.data = '%.2f'.format(info.line_peak[0] / 100);
+
+			tab.querySelector('#lb_load05_cur').firstChild.data = '%.2f'.format(info.line_current[1] / 100);
+			tab.querySelector('#lb_load05_avg').firstChild.data = '%.2f'.format(info.line_average[1] / 100);
+			tab.querySelector('#lb_load05_peak').firstChild.data = '%.2f'.format(info.line_peak[1] / 100);
+
+			tab.querySelector('#lb_load15_cur').firstChild.data = '%.2f'.format(info.line_current[2] / 100);
+			tab.querySelector('#lb_load15_avg').firstChild.data = '%.2f'.format(info.line_average[2] / 100);
+			tab.querySelector('#lb_load15_peak').firstChild.data = '%.2f'.format(info.line_peak[2] / 100);
+		});
+
+		this.pollData();
+
+		return v;
+	},
+
+	handleSaveApply: null,
+	handleSave: null,
+	handleReset: null
+});