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Frontend generated node charts with graphite backend
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Michael Rüttgers
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Jan 14, 2016
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,258 @@ | ||
| define(["c3", "d3"], function (c3, d3) { | ||
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| var charts = function (node, config) { | ||
| this.node = node | ||
|
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| this.chartConfig = config | ||
| this.chart = null | ||
|
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| this.zoomConfig = { | ||
| "levels": [ | ||
| {"label": "8h", "from": "8h", "interval": "15min"}, | ||
| {"label": "24h", "from": "26h", "interval": "1h"}, | ||
| {"label": "1m", "from": "1mon", "interval": "1d"}, | ||
| {"label": "1y", "from": "1y", "interval": "1mon"} | ||
| ] | ||
| } | ||
| this.zoomLevel = 0 | ||
|
|
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| this.c3Config = { | ||
| "size": { | ||
| "height": 240 | ||
| }, | ||
| padding: { | ||
| bottom: 30 | ||
| }, | ||
| "legend": { | ||
| "item": { | ||
| "onclick": function (id) { | ||
| this.api.hide() | ||
| this.api.show(id) | ||
| } | ||
| } | ||
| }, | ||
| "data": { | ||
| "keys": { | ||
| "x": "time", | ||
| "value": ["clients", "load", "uptime"] | ||
| }, | ||
| "colors": { | ||
| "clients": "#1566A9", | ||
| "load": "#1566A9", | ||
| "uptime": "#1566A9" | ||
| }, | ||
| "names": { | ||
| "clients": "Clients", | ||
| "load": "Load", | ||
| "uptime": "Uptime" | ||
| }, | ||
| "hide": ["load", "uptime"] | ||
| }, | ||
| "tooltip": { | ||
| "format": { | ||
| "value": this.c3FormatToolTip.bind(this) | ||
| } | ||
| }, | ||
| "axis": { | ||
| "x": { | ||
| "type": "timeseries", | ||
| "tick": { | ||
| "format": this.c3FormatXAxis.bind(this), | ||
| "rotate": -45 | ||
| } | ||
| }, | ||
| "y": { | ||
| "min": 0, | ||
| "padding": { | ||
| "bottom": 0 | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| this.cache = [] | ||
|
|
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| this.init() | ||
| } | ||
|
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| charts.prototype = { | ||
|
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| init: function () { | ||
| // Workaround for endless loop bug | ||
| if (this.c3Config.axis.x.tick && this.c3Config.axis.x.tick.format && typeof this.c3Config.axis.x.tick.format === "function") { | ||
| if (this.c3Config.axis.x.tick.format && !this.c3Config.axis.x.tick._format) | ||
| this.c3Config.axis.x.tick._format = this.c3Config.axis.x.tick.format | ||
| this.c3Config.axis.x.tick.format = function (val) { | ||
| return this.c3Config.axis.x.tick._format(val) | ||
| }.bind(this) | ||
| } | ||
| }, | ||
|
|
||
| render: function () { | ||
| var div = document.createElement("div") | ||
| div.classList.add("chart") | ||
| var h4 = document.createElement("h4") | ||
| h4.textContent = this.chartConfig.name | ||
| div.appendChild(h4) | ||
|
|
||
|
|
||
| // Render chart | ||
| this.load(function (data) { | ||
| div.appendChild(this.renderChart(data)) | ||
|
|
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| // Render zoom controls | ||
| if (this.zoomConfig.levels.length > 0) | ||
| div.appendChild(this.renderZoomControls()) | ||
|
|
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| }.bind(this)) | ||
|
|
||
| return div | ||
| }, | ||
|
|
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| renderChart: function (data) { | ||
| this.c3Config.data.json = data | ||
| this.chart = c3.generate(this.c3Config) | ||
| return this.chart.element | ||
| }, | ||
|
|
||
| updateChart: function (data) { | ||
| this.c3Config.data.json = data | ||
| this.chart.load(this.c3Config.data) | ||
| }, | ||
|
|
||
| renderZoomControls: function () { | ||
| // Draw zoom controls | ||
| var zoomDiv = document.createElement("div") | ||
| zoomDiv.classList.add("zoom-buttons") | ||
|
|
||
| var zoomButtons = [] | ||
| this.zoomConfig.levels.forEach(function (v, level) { | ||
| var btn = document.createElement("button") | ||
| btn.classList.add("zoom-button") | ||
| btn.setAttribute("data-zoom-level", level) | ||
|
|
||
| if (level === this.zoomLevel) | ||
| btn.classList.add("active") | ||
|
|
||
| btn.onclick = function () { | ||
| if (level !== this.zoomLevel) { | ||
| zoomButtons.forEach(function (v, k) { | ||
| if (level !== k) | ||
| v.classList.remove("active") | ||
| else | ||
| v.classList.add("active") | ||
| }) | ||
| this.setZoomLevel(level) | ||
| } | ||
| }.bind(this) | ||
| btn.textContent = v.label | ||
| zoomButtons[level] = btn | ||
| zoomDiv.appendChild(btn) | ||
| }.bind(this)) | ||
| return zoomDiv | ||
| }, | ||
|
|
||
| setZoomLevel: function (level) { | ||
| if (level !== this.zoomLevel) { | ||
| this.zoomLevel = level | ||
| this.load(this.updateChart.bind(this)) | ||
| } | ||
| }, | ||
|
|
||
| load: function (callback) { | ||
| if (this.cache[this.zoomLevel]) | ||
| callback(this.cache[this.zoomLevel]) | ||
| else { | ||
| var url = this.chartConfig.data.url + | ||
| "?" + | ||
| this.chartConfig.data.parameters.join("&") | ||
|
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| var zoomConfig = this.zoomConfig.levels[this.zoomLevel] | ||
|
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| var id = this.node.nodeinfo.node_id | ||
|
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| if (this.chartConfig.quirks | ||
| && Array.isArray(this.chartConfig.quirks) | ||
| && this.chartConfig.quirks.indexOf("id_to_mac") >= 0) { | ||
|
|
||
| // Quirk for legacy graphite data of Freifunk Aachen (data is stored by the node's mac address) | ||
| var regex = /^([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})$/i | ||
| var match = regex.exec(id) | ||
| if (match) | ||
| id = match[1] + ":" + match[2] + ":" + match[3] + ":" + match[4] + ":" + match[5] + ":" + match[6] | ||
| } | ||
|
|
||
| // Using split as workaround for replacing all occurrences (to avoid regexps) | ||
| url = url.split("###NODE_ID###").join(id) | ||
| url = url.split("###ZOOM_FROM###").join(zoomConfig.from) | ||
| url = url.split("###ZOOM_INTERVAL###").join(zoomConfig.interval) | ||
|
|
||
| // In case we will have multiple urls in the future | ||
| Promise.all([url].map(getJSON)).then(function (data) { | ||
| this.cache[this.zoomLevel] = this.parse(data) | ||
| callback(this.cache[this.zoomLevel]) | ||
| }.bind(this)) | ||
| } | ||
| }, | ||
|
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||
| parse: function (results) { | ||
| var data = [] | ||
| results.forEach(function (d) { | ||
| if (d[0] && d[0].target && d[0].datapoints) | ||
| d[0].datapoints.forEach(function (dp, dpk) { | ||
| var tmp = {"time": new Date(dp[1] * 1000)} | ||
| for (var i = 0; i < d.length; i++) { | ||
| var target = d[i].target | ||
| var v = (d[i].datapoints[dpk] ? d[i].datapoints[dpk][0] : 0) | ||
| tmp[target] = this.formatValue(target, v) | ||
| } | ||
| data.push(tmp) | ||
| }.bind(this)) | ||
| }.bind(this)) | ||
| return data | ||
| }, | ||
|
|
||
| c3FormatToolTip: function (d, ratio, id) { | ||
| switch (id) { | ||
| case "uptime": | ||
| return d.toFixed(1) + " Tage" | ||
| default: | ||
| return d | ||
| } | ||
| }, | ||
|
|
||
| c3FormatXAxis: function (d) { | ||
| var pad = function (number, pad) { | ||
| var N = Math.pow(10, pad) | ||
| return number < N ? ("" + (N + number)).slice(1) : "" + number | ||
| } | ||
| switch (this.zoomLevel) { | ||
| case 0: // 8h | ||
| case 1: // 24h | ||
| return pad(d.getHours(), 2) + ":" + pad(d.getMinutes(), 2) | ||
| case 2: // 1m | ||
| return pad(d.getDate(), 2) + "." + pad(d.getMonth() + 1, 2) | ||
| case 3: // 1y | ||
| return ["Jan", "Feb", "Mrz", "Apr", "Mai", "Jun", "Jul", "Aug", "Sep", "Okt", "Nov", "Dez"][d.getMonth()] | ||
| default: | ||
| break | ||
| } | ||
| }, | ||
|
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| formatValue: function (id, value) { | ||
| switch (id) { | ||
| case "load": | ||
| return (d3.format(".2r")(value)) | ||
| case "clients": | ||
| return (Math.ceil(value)) | ||
| case "uptime": | ||
| return (value / 86400) | ||
| } | ||
| return value | ||
| } | ||
|
|
||
| } | ||
|
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||
|
|
||
| return charts | ||
| }) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| .infobox .chart { | ||
| position: relative; | ||
| & > .c3 { | ||
| margin-right: 20px; | ||
| } | ||
|
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| .zoom-buttons { | ||
| position: absolute; | ||
| top: 0px; | ||
| right: 20px; | ||
|
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| button { | ||
| font-size: 10pt; | ||
| width: 3em; | ||
| height: 3em; | ||
| border-radius: 1.5em; | ||
| margin-left: 6px; | ||
| } | ||
| } | ||
| } |
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