diff options
Diffstat (limited to 'static')
| -rw-r--r-- | static/d3.v3.min.js | 5 | ||||
| -rw-r--r-- | static/jquery-1.7.1.min.js | 4 | ||||
| -rw-r--r-- | static/smoothie.js | 804 | ||||
| -rw-r--r-- | static/status-dnbd3.html | 299 |
4 files changed, 1112 insertions, 0 deletions
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\ No newline at end of file diff --git a/static/smoothie.js b/static/smoothie.js new file mode 100644 index 0000000..27f5151 --- /dev/null +++ b/static/smoothie.js @@ -0,0 +1,804 @@ +// MIT License: +// +// Copyright (c) 2010-2013, Joe Walnes +// 2013-2014, Drew Noakes +// +// Permission is hereby granted, free of charge, to any person obtaining a copy +// of this software and associated documentation files (the "Software"), to deal +// in the Software without restriction, including without limitation the rights +// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +// copies of the Software, and to permit persons to whom the Software is +// furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +// THE SOFTWARE. + +/** + * Smoothie Charts - http://smoothiecharts.org/ + * (c) 2010-2013, Joe Walnes + * 2013-2014, Drew Noakes + * + * v1.0: Main charting library, by Joe Walnes + * v1.1: Auto scaling of axis, by Neil Dunn + * v1.2: fps (frames per second) option, by Mathias Petterson + * v1.3: Fix for divide by zero, by Paul Nikitochkin + * v1.4: Set minimum, top-scale padding, remove timeseries, add optional timer to reset bounds, by Kelley Reynolds + * v1.5: Set default frames per second to 50... smoother. + * .start(), .stop() methods for conserving CPU, by Dmitry Vyal + * options.interpolation = 'bezier' or 'line', by Dmitry Vyal + * options.maxValue to fix scale, by Dmitry Vyal + * v1.6: minValue/maxValue will always get converted to floats, by Przemek Matylla + * v1.7: options.grid.fillStyle may be a transparent color, by Dmitry A. Shashkin + * Smooth rescaling, by Kostas Michalopoulos + * v1.8: Set max length to customize number of live points in the dataset with options.maxDataSetLength, by Krishna Narni + * v1.9: Display timestamps along the bottom, by Nick and Stev-io + * (https://groups.google.com/forum/?fromgroups#!topic/smoothie-charts/-Ywse8FCpKI%5B1-25%5D) + * Refactored by Krishna Narni, to support timestamp formatting function + * v1.10: Switch to requestAnimationFrame, removed the now obsoleted options.fps, by Gergely Imreh + * v1.11: options.grid.sharpLines option added, by @drewnoakes + * Addressed warning seen in Firefox when seriesOption.fillStyle undefined, by @drewnoakes + * v1.12: Support for horizontalLines added, by @drewnoakes + * Support for yRangeFunction callback added, by @drewnoakes + * v1.13: Fixed typo (#32), by @alnikitich + * v1.14: Timer cleared when last TimeSeries removed (#23), by @davidgaleano + * Fixed diagonal line on chart at start/end of data stream, by @drewnoakes + * v1.15: Support for npm package (#18), by @dominictarr + * Fixed broken removeTimeSeries function (#24) by @davidgaleano + * Minor performance and tidying, by @drewnoakes + * v1.16: Bug fix introduced in v1.14 relating to timer creation/clearance (#23), by @drewnoakes + * TimeSeries.append now deals with out-of-order timestamps, and can merge duplicates, by @zacwitte (#12) + * Documentation and some local variable renaming for clarity, by @drewnoakes + * v1.17: Allow control over font size (#10), by @drewnoakes + * Timestamp text won't overlap, by @drewnoakes + * v1.18: Allow control of max/min label precision, by @drewnoakes + * Added 'borderVisible' chart option, by @drewnoakes + * Allow drawing series with fill but no stroke (line), by @drewnoakes + * v1.19: Avoid unnecessary repaints, and fixed flicker in old browsers having multiple charts in document (#40), by @asbai + * v1.20: Add SmoothieChart.getTimeSeriesOptions and SmoothieChart.bringToFront functions, by @drewnoakes + * v1.21: Add 'step' interpolation mode, by @drewnoakes + * v1.22: Add support for different pixel ratios. Also add optional y limit formatters, by @copacetic + * v1.23: Fix bug introduced in v1.22 (#44), by @drewnoakes + * v1.24: Fix bug introduced in v1.23, re-adding parseFloat to y-axis formatter defaults, by @siggy_sf + * v1.25: Fix bug seen when adding a data point to TimeSeries which is older than the current data, by @Nking92 + * Draw time labels on top of series, by @comolosabia + * Add TimeSeries.clear function, by @drewnoakes + * v1.26: Add support for resizing on high device pixel ratio screens, by @copacetic + * v1.27: Fix bug introduced in v1.26 for non whole number devicePixelRatio values, by @zmbush + * v1.28: Add 'minValueScale' option, by @megawac + */ + +;(function(exports) { + + var Util = { + extend: function() { + arguments[0] = arguments[0] || {}; + for (var i = 1; i < arguments.length; i++) + { + for (var key in arguments[i]) + { + if (arguments[i].hasOwnProperty(key)) + { + if (typeof(arguments[i][key]) === 'object') { + if (arguments[i][key] instanceof Array) { + arguments[0][key] = arguments[i][key]; + } else { + arguments[0][key] = Util.extend(arguments[0][key], arguments[i][key]); + } + } else { + arguments[0][key] = arguments[i][key]; + } + } + } + } + return arguments[0]; + } + }; + + /** + * Initialises a new <code>TimeSeries</code> with optional data options. + * + * Options are of the form (defaults shown): + * + * <pre> + * { + * resetBounds: true, // enables/disables automatic scaling of the y-axis + * resetBoundsInterval: 3000 // the period between scaling calculations, in millis + * } + * </pre> + * + * Presentation options for TimeSeries are specified as an argument to <code>SmoothieChart.addTimeSeries</code>. + * + * @constructor + */ + function TimeSeries(options) { + this.options = Util.extend({}, TimeSeries.defaultOptions, options); + this.clear(); + } + + TimeSeries.defaultOptions = { + resetBoundsInterval: 3000, + resetBounds: true + }; + + /** + * Clears all data and state from this TimeSeries object. + */ + TimeSeries.prototype.clear = function() { + this.data = []; + this.maxValue = Number.NaN; // The maximum value ever seen in this TimeSeries. + this.minValue = Number.NaN; // The minimum value ever seen in this TimeSeries. + }; + + /** + * Recalculate the min/max values for this <code>TimeSeries</code> object. + * + * This causes the graph to scale itself in the y-axis. + */ + TimeSeries.prototype.resetBounds = function() { + if (this.data.length) { + // Walk through all data points, finding the min/max value + this.maxValue = this.data[0][1]; + this.minValue = this.data[0][1]; + for (var i = 1; i < this.data.length; i++) { + var value = this.data[i][1]; + if (value > this.maxValue) { + this.maxValue = value; + } + if (value < this.minValue) { + this.minValue = value; + } + } + } else { + // No data exists, so set min/max to NaN + this.maxValue = Number.NaN; + this.minValue = Number.NaN; + } + }; + + /** + * Adds a new data point to the <code>TimeSeries</code>, preserving chronological order. + * + * @param timestamp the position, in time, of this data point + * @param value the value of this data point + * @param sumRepeatedTimeStampValues if <code>timestamp</code> has an exact match in the series, this flag controls + * whether it is replaced, or the values summed (defaults to false.) + */ + TimeSeries.prototype.append = function(timestamp, value, sumRepeatedTimeStampValues) { + // Rewind until we hit an older timestamp + var i = this.data.length - 1; + while (i >= 0 && this.data[i][0] > timestamp) { + i--; + } + + if (i === -1) { + // This new item is the oldest data + this.data.splice(0, 0, [timestamp, value]); + } else if (this.data.length > 0 && this.data[i][0] === timestamp) { + // Update existing values in the array + if (sumRepeatedTimeStampValues) { + // Sum this value into the existing 'bucket' + this.data[i][1] += value; + value = this.data[i][1]; + } else { + // Replace the previous value + this.data[i][1] = value; + } + } else if (i < this.data.length - 1) { + // Splice into the correct position to keep timestamps in order + this.data.splice(i + 1, 0, [timestamp, value]); + } else { + // Add to the end of the array + this.data.push([timestamp, value]); + } + + this.maxValue = isNaN(this.maxValue) ? value : Math.max(this.maxValue, value); + this.minValue = isNaN(this.minValue) ? value : Math.min(this.minValue, value); + }; + + TimeSeries.prototype.dropOldData = function(oldestValidTime, maxDataSetLength) { + // We must always keep one expired data point as we need this to draw the + // line that comes into the chart from the left, but any points prior to that can be removed. + var removeCount = 0; + while (this.data.length - removeCount >= maxDataSetLength && this.data[removeCount + 1][0] < oldestValidTime) { + removeCount++; + } + if (removeCount !== 0) { + this.data.splice(0, removeCount); + } + }; + + /** + * Initialises a new <code>SmoothieChart</code>. + * + * Options are optional, and should be of the form below. Just specify the values you + * need and the rest will be given sensible defaults as shown: + * + * <pre> + * { + * minValue: undefined, // specify to clamp the lower y-axis to a given value + * maxValue: undefined, // specify to clamp the upper y-axis to a given value + * maxValueScale: 1, // allows proportional padding to be added above the chart. for 10% padding, specify 1.1. + * minValueScale: 1, // allows proportional padding to be added below the chart. for 10% padding, specify 1.1. + * yRangeFunction: undefined, // function({min: , max: }) { return {min: , max: }; } + * scaleSmoothing: 0.125, // controls the rate at which y-value zoom animation occurs + * millisPerPixel: 20, // sets the speed at which the chart pans by + * enableDpiScaling: true, // support rendering at different DPI depending on the device + * yMinFormatter: function(min, precision) { // callback function that formats the min y value label + * return parseFloat(min).toFixed(precision); + * }, + * yMaxFormatter: function(max, precision) { // callback function that formats the max y value label + * return parseFloat(max).toFixed(precision); + * }, + * maxDataSetLength: 2, + * interpolation: 'bezier' // one of 'bezier', 'linear', or 'step' + * timestampFormatter: null, // optional function to format time stamps for bottom of chart + * // you may use SmoothieChart.timeFormatter, or your own: function(date) { return ''; } + * scrollBackwards: false, // reverse the scroll direction of the chart + * horizontalLines: [], // [ { value: 0, color: '#ffffff', lineWidth: 1 } ] + * grid: + * { + * fillStyle: '#000000', // the background colour of the chart + * lineWidth: 1, // the pixel width of grid lines + * strokeStyle: '#777777', // colour of grid lines + * millisPerLine: 1000, // distance between vertical grid lines + * sharpLines: false, // controls whether grid lines are 1px sharp, or softened + * verticalSections: 2, // number of vertical sections marked out by horizontal grid lines + * borderVisible: true // whether the grid lines trace the border of the chart or not + * }, + * labels + * { + * disabled: false, // enables/disables labels showing the min/max values + * fillStyle: '#ffffff', // colour for text of labels, + * fontSize: 15, + * fontFamily: 'sans-serif', + * precision: 2 + * } + * } + * </pre> + * + * @constructor + */ + function SmoothieChart(options) { + this.options = Util.extend({}, SmoothieChart.defaultChartOptions, options); + this.seriesSet = []; + this.currentValueRange = 1; + this.currentVisMinValue = 0; + this.lastRenderTimeMillis = 0; + } + + SmoothieChart.defaultChartOptions = { + millisPerPixel: 20, + enableDpiScaling: true, + yMinFormatter: function(min, precision) { + return parseFloat(min).toFixed(precision); + }, + yMaxFormatter: function(max, precision) { + return parseFloat(max).toFixed(precision); + }, + maxValueScale: 1, + minValueScale: 1, + interpolation: 'bezier', + scaleSmoothing: 0.125, + maxDataSetLength: 2, + scrollBackwards: false, + grid: { + fillStyle: '#000000', + strokeStyle: '#777777', + lineWidth: 1, + sharpLines: false, + millisPerLine: 1000, + verticalSections: 2, + borderVisible: true + }, + labels: { + fillStyle: '#ffffff', + disabled: false, + fontSize: 10, + fontFamily: 'monospace', + precision: 2 + }, + horizontalLines: [] + }; + + // Based on http://inspirit.github.com/jsfeat/js/compatibility.js + SmoothieChart.AnimateCompatibility = (function() { + var requestAnimationFrame = function(callback, element) { + var requestAnimationFrame = + window.requestAnimationFrame || + window.webkitRequestAnimationFrame || + window.mozRequestAnimationFrame || + window.oRequestAnimationFrame || + window.msRequestAnimationFrame || + function(callback) { + return window.setTimeout(function() { + callback(new Date().getTime()); + }, 16); + }; + return requestAnimationFrame.call(window, callback, element); + }, + cancelAnimationFrame = function(id) { + var cancelAnimationFrame = + window.cancelAnimationFrame || + function(id) { + clearTimeout(id); + }; + return cancelAnimationFrame.call(window, id); + }; + + return { + requestAnimationFrame: requestAnimationFrame, + cancelAnimationFrame: cancelAnimationFrame + }; + })(); + + SmoothieChart.defaultSeriesPresentationOptions = { + lineWidth: 1, + strokeStyle: '#ffffff' + }; + + /** + * Adds a <code>TimeSeries</code> to this chart, with optional presentation options. + * + * Presentation options should be of the form (defaults shown): + * + * <pre> + * { + * lineWidth: 1, + * strokeStyle: '#ffffff', + * fillStyle: undefined + * } + * </pre> + */ + SmoothieChart.prototype.addTimeSeries = function(timeSeries, options) { + this.seriesSet.push({timeSeries: timeSeries, options: Util.extend({}, SmoothieChart.defaultSeriesPresentationOptions, options)}); + if (timeSeries.options.resetBounds && timeSeries.options.resetBoundsInterval > 0) { + timeSeries.resetBoundsTimerId = setInterval( + function() { + timeSeries.resetBounds(); + }, + timeSeries.options.resetBoundsInterval + ); + } + }; + + /** + * Removes the specified <code>TimeSeries</code> from the chart. + */ + SmoothieChart.prototype.removeTimeSeries = function(timeSeries) { + // Find the correct timeseries to remove, and remove it + var numSeries = this.seriesSet.length; + for (var i = 0; i < numSeries; i++) { + if (this.seriesSet[i].timeSeries === timeSeries) { + this.seriesSet.splice(i, 1); + break; + } + } + // If a timer was operating for that timeseries, remove it + if (timeSeries.resetBoundsTimerId) { + // Stop resetting the bounds, if we were + clearInterval(timeSeries.resetBoundsTimerId); + } + }; + + /** + * Gets render options for the specified <code>TimeSeries</code>. + * + * As you may use a single <code>TimeSeries</code> in multiple charts with different formatting in each usage, + * these settings are stored in the chart. + */ + SmoothieChart.prototype.getTimeSeriesOptions = function(timeSeries) { + // Find the correct timeseries to remove, and remove it + var numSeries = this.seriesSet.length; + for (var i = 0; i < numSeries; i++) { + if (this.seriesSet[i].timeSeries === timeSeries) { + return this.seriesSet[i].options; + } + } + }; + + /** + * Brings the specified <code>TimeSeries</code> to the top of the chart. It will be rendered last. + */ + SmoothieChart.prototype.bringToFront = function(timeSeries) { + // Find the correct timeseries to remove, and remove it + var numSeries = this.seriesSet.length; + for (var i = 0; i < numSeries; i++) { + if (this.seriesSet[i].timeSeries === timeSeries) { + var set = this.seriesSet.splice(i, 1); + this.seriesSet.push(set[0]); + break; + } + } + }; + + /** + * Instructs the <code>SmoothieChart</code> to start rendering to the provided canvas, with specified delay. + * + * @param canvas the target canvas element + * @param delayMillis an amount of time to wait before a data point is shown. This can prevent the end of the series + * from appearing on screen, with new values flashing into view, at the expense of some latency. + */ + SmoothieChart.prototype.streamTo = function(canvas, delayMillis) { + this.canvas = canvas; + this.delay = delayMillis; + this.start(); + }; + + /** + * Make sure the canvas has the optimal resolution for the device's pixel ratio. + */ + SmoothieChart.prototype.resize = function() { + // TODO this function doesn't handle the value of enableDpiScaling changing during execution + if (!this.options.enableDpiScaling || !window || window.devicePixelRatio === 1) + return; + + var dpr = window.devicePixelRatio; + var width = parseInt(this.canvas.getAttribute('width')); + var height = parseInt(this.canvas.getAttribute('height')); + + if (!this.originalWidth || (Math.floor(this.originalWidth * dpr) !== width)) { + this.originalWidth = width; + this.canvas.setAttribute('width', (Math.floor(width * dpr)).toString()); + this.canvas.style.width = width + 'px'; + this.canvas.getContext('2d').scale(dpr, dpr); + } + + if (!this.originalHeight || (Math.floor(this.originalHeight * dpr) !== height)) { + this.originalHeight = height; + this.canvas.setAttribute('height', (Math.floor(height * dpr)).toString()); + this.canvas.style.height = height + 'px'; + this.canvas.getContext('2d').scale(dpr, dpr); + } + }; + + /** + * Starts the animation of this chart. + */ + SmoothieChart.prototype.start = function() { + if (this.frame) { + // We're already running, so just return + return; + } + + // Renders a frame, and queues the next frame for later rendering + var animate = function() { + this.frame = SmoothieChart.AnimateCompatibility.requestAnimationFrame(function() { + this.render(); + animate(); + }.bind(this)); + }.bind(this); + + animate(); + }; + + /** + * Stops the animation of this chart. + */ + SmoothieChart.prototype.stop = function() { + if (this.frame) { + SmoothieChart.AnimateCompatibility.cancelAnimationFrame(this.frame); + delete this.frame; + } + }; + + SmoothieChart.prototype.updateValueRange = function() { + // Calculate the current scale of the chart, from all time series. + var chartOptions = this.options, + chartMaxValue = Number.NaN, + chartMinValue = Number.NaN; + + for (var d = 0; d < this.seriesSet.length; d++) { + // TODO(ndunn): We could calculate / track these values as they stream in. + var timeSeries = this.seriesSet[d].timeSeries; + if (!isNaN(timeSeries.maxValue)) { + chartMaxValue = !isNaN(chartMaxValue) ? Math.max(chartMaxValue, timeSeries.maxValue) : timeSeries.maxValue; + } + + if (!isNaN(timeSeries.minValue)) { + chartMinValue = !isNaN(chartMinValue) ? Math.min(chartMinValue, timeSeries.minValue) : timeSeries.minValue; + } + } + + // Scale the chartMaxValue to add padding at the top if required + if (chartOptions.maxValue != null) { + chartMaxValue = chartOptions.maxValue; + } else { + chartMaxValue *= chartOptions.maxValueScale; + } + + // Set the minimum if we've specified one + if (chartOptions.minValue != null) { + chartMinValue = chartOptions.minValue; + } else { + chartMinValue -= Math.abs(chartMinValue * chartOptions.minValueScale - chartMinValue); + } + + // If a custom range function is set, call it + if (this.options.yRangeFunction) { + var range = this.options.yRangeFunction({min: chartMinValue, max: chartMaxValue}); + chartMinValue = range.min; + chartMaxValue = range.max; + } + + if (!isNaN(chartMaxValue) && !isNaN(chartMinValue)) { + var targetValueRange = chartMaxValue - chartMinValue; + var valueRangeDiff = (targetValueRange - this.currentValueRange); + var minValueDiff = (chartMinValue - this.currentVisMinValue); + this.isAnimatingScale = Math.abs(valueRangeDiff) > 0.1 || Math.abs(minValueDiff) > 0.1; + this.currentValueRange += chartOptions.scaleSmoothing * valueRangeDiff; + this.currentVisMinValue += chartOptions.scaleSmoothing * minValueDiff; + } + + this.valueRange = { min: chartMinValue, max: chartMaxValue }; + }; + + SmoothieChart.prototype.render = function(canvas, time) { + var nowMillis = new Date().getTime(); + + if (!this.isAnimatingScale) { + // We're not animating. We can use the last render time and the scroll speed to work out whether + // we actually need to paint anything yet. If not, we can return immediately. + + // Render at least every 1/6th of a second. The canvas may be resized, which there is + // no reliable way to detect. + var maxIdleMillis = Math.min(1000/6, this.options.millisPerPixel); + + if (nowMillis - this.lastRenderTimeMillis < maxIdleMillis) { + return; + } + } + + this.resize(); + + this.lastRenderTimeMillis = nowMillis; + + canvas = canvas || this.canvas; + time = time || nowMillis - (this.delay || 0); + + // Round time down to pixel granularity, so motion appears smoother. + time -= time % this.options.millisPerPixel; + + var context = canvas.getContext('2d'), + chartOptions = this.options, + dimensions = { top: 0, left: 0, width: canvas.clientWidth, height: canvas.clientHeight }, + // Calculate the threshold time for the oldest data points. + oldestValidTime = time - (dimensions.width * chartOptions.millisPerPixel), + valueToYPixel = function(value) { + var offset = value - this.currentVisMinValue; + return this.currentValueRange === 0 + ? dimensions.height + : dimensions.height - (Math.round((offset / this.currentValueRange) * dimensions.height)); + }.bind(this), + timeToXPixel = function(t) { + if(chartOptions.scrollBackwards) { + return Math.round((time - t) / chartOptions.millisPerPixel); + } + return Math.round(dimensions.width - ((time - t) / chartOptions.millisPerPixel)); + }; + + this.updateValueRange(); + + context.font = chartOptions.labels.fontSize + 'px ' + chartOptions.labels.fontFamily; + + // Save the state of the canvas context, any transformations applied in this method + // will get removed from the stack at the end of this method when .restore() is called. + context.save(); + + // Move the origin. + context.translate(dimensions.left, dimensions.top); + + // Create a clipped rectangle - anything we draw will be constrained to this rectangle. + // This prevents the occasional pixels from curves near the edges overrunning and creating + // screen cheese (that phrase should need no explanation). + context.beginPath(); + context.rect(0, 0, dimensions.width, dimensions.height); + context.clip(); + + // Clear the working area. + context.save(); + context.fillStyle = chartOptions.grid.fillStyle; + context.clearRect(0, 0, dimensions.width, dimensions.height); + context.fillRect(0, 0, dimensions.width, dimensions.height); + context.restore(); + + // Grid lines... + context.save(); + context.lineWidth = chartOptions.grid.lineWidth; + context.strokeStyle = chartOptions.grid.strokeStyle; + // Vertical (time) dividers. + if (chartOptions.grid.millisPerLine > 0) { + context.beginPath(); + for (var t = time - (time % chartOptions.grid.millisPerLine); + t >= oldestValidTime; + t -= chartOptions.grid.millisPerLine) { + var gx = timeToXPixel(t); + if (chartOptions.grid.sharpLines) { + gx -= 0.5; + } + context.moveTo(gx, 0); + context.lineTo(gx, dimensions.height); + } + context.stroke(); + context.closePath(); + } + + // Horizontal (value) dividers. + for (var v = 1; v < chartOptions.grid.verticalSections; v++) { + var gy = Math.round(v * dimensions.height / chartOptions.grid.verticalSections); + if (chartOptions.grid.sharpLines) { + gy -= 0.5; + } + context.beginPath(); + context.moveTo(0, gy); + context.lineTo(dimensions.width, gy); + context.stroke(); + context.closePath(); + } + // Bounding rectangle. + if (chartOptions.grid.borderVisible) { + context.beginPath(); + context.strokeRect(0, 0, dimensions.width, dimensions.height); + context.closePath(); + } + context.restore(); + + // Draw any horizontal lines... + if (chartOptions.horizontalLines && chartOptions.horizontalLines.length) { + for (var hl = 0; hl < chartOptions.horizontalLines.length; hl++) { + var line = chartOptions.horizontalLines[hl], + hly = Math.round(valueToYPixel(line.value)) - 0.5; + context.strokeStyle = line.color || '#ffffff'; + context.lineWidth = line.lineWidth || 1; + context.beginPath(); + context.moveTo(0, hly); + context.lineTo(dimensions.width, hly); + context.stroke(); + context.closePath(); + } + } + + // For each data set... + for (var d = 0; d < this.seriesSet.length; d++) { + context.save(); + var timeSeries = this.seriesSet[d].timeSeries, + dataSet = timeSeries.data, + seriesOptions = this.seriesSet[d].options; + + // Delete old data that's moved off the left of the chart. + timeSeries.dropOldData(oldestValidTime, chartOptions.maxDataSetLength); + + // Set style for this dataSet. + context.lineWidth = seriesOptions.lineWidth; + context.strokeStyle = seriesOptions.strokeStyle; + // Draw the line... + context.beginPath(); + // Retain lastX, lastY for calculating the control points of bezier curves. + var firstX = 0, lastX = 0, lastY = 0; + for (var i = 0; i < dataSet.length && dataSet.length !== 1; i++) { + var x = timeToXPixel(dataSet[i][0]), + y = valueToYPixel(dataSet[i][1]); + + if (i === 0) { + firstX = x; + context.moveTo(x, y); + } else { + switch (chartOptions.interpolation) { + case "linear": + case "line": { + context.lineTo(x,y); + break; + } + case "bezier": + default: { + // Great explanation of Bezier curves: http://en.wikipedia.org/wiki/Bezier_curve#Quadratic_curves + // + // Assuming A was the last point in the line plotted and B is the new point, + // we draw a curve with control points P and Q as below. + // + // A---P + // | + // | + // | + // Q---B + // + // Importantly, A and P are at the same y coordinate, as are B and Q. This is + // so adjacent curves appear to flow as one. + // + context.bezierCurveTo( // startPoint (A) is implicit from last iteration of loop + Math.round((lastX + x) / 2), lastY, // controlPoint1 (P) + Math.round((lastX + x)) / 2, y, // controlPoint2 (Q) + x, y); // endPoint (B) + break; + } + case "step": { + context.lineTo(x,lastY); + context.lineTo(x,y); + break; + } + } + } + + lastX = x; lastY = y; + } + + if (dataSet.length > 1) { + if (seriesOptions.fillStyle) { + // Close up the fill region. + context.lineTo(dimensions.width + seriesOptions.lineWidth + 1, lastY); + context.lineTo(dimensions.width + seriesOptions.lineWidth + 1, dimensions.height + seriesOptions.lineWidth + 1); + context.lineTo(firstX, dimensions.height + seriesOptions.lineWidth); + context.fillStyle = seriesOptions.fillStyle; + context.fill(); + } + + if (seriesOptions.strokeStyle && seriesOptions.strokeStyle !== 'none') { + context.stroke(); + } + context.closePath(); + } + context.restore(); + } + + // Draw the axis values on the chart. + if (!chartOptions.labels.disabled && !isNaN(this.valueRange.min) && !isNaN(this.valueRange.max)) { + var maxValueString = chartOptions.yMaxFormatter(this.valueRange.max, chartOptions.labels.precision), + minValueString = chartOptions.yMinFormatter(this.valueRange.min, chartOptions.labels.precision), + labelPos = chartOptions.scrollBackwards ? 0 : dimensions.width - context.measureText(maxValueString).width - 2; + context.fillStyle = chartOptions.labels.fillStyle; + context.fillText(maxValueString, labelPos, chartOptions.labels.fontSize); + context.fillText(minValueString, labelPos, dimensions.height - 2); + } + + // Display timestamps along x-axis at the bottom of the chart. + if (chartOptions.timestampFormatter && chartOptions.grid.millisPerLine > 0) { + var textUntilX = chartOptions.scrollBackwards + ? context.measureText(minValueString).width + : dimensions.width - context.measureText(minValueString).width + 4; + for (var t = time - (time % chartOptions.grid.millisPerLine); + t >= oldestValidTime; + t -= chartOptions.grid.millisPerLine) { + var gx = timeToXPixel(t); + // Only draw the timestamp if it won't overlap with the previously drawn one. + if ((!chartOptions.scrollBackwards && gx < textUntilX) || (chartOptions.scrollBackwards && gx > textUntilX)) { + // Formats the timestamp based on user specified formatting function + // SmoothieChart.timeFormatter function above is one such formatting option + var tx = new Date(t), + ts = chartOptions.timestampFormatter(tx), + tsWidth = context.measureText(ts).width; + + textUntilX = chartOptions.scrollBackwards + ? gx + tsWidth + 2 + : gx - tsWidth - 2; + + context.fillStyle = chartOptions.labels.fillStyle; + if(chartOptions.scrollBackwards) { + context.fillText(ts, gx, dimensions.height - 2); + } else { + context.fillText(ts, gx - tsWidth, dimensions.height - 2); + } + } + } + } + + context.restore(); // See .save() above. + }; + + // Sample timestamp formatting function + SmoothieChart.timeFormatter = function(date) { + function pad2(number) { return (number < 10 ? '0' : '') + number } + return pad2(date.getHours()) + ':' + pad2(date.getMinutes()) + ':' + pad2(date.getSeconds()); + }; + + exports.TimeSeries = TimeSeries; + exports.SmoothieChart = SmoothieChart; + +})(typeof exports === 'undefined' ? this : exports); + diff --git a/static/status-dnbd3.html b/static/status-dnbd3.html new file mode 100644 index 0000000..5e81657 --- /dev/null +++ b/static/status-dnbd3.html @@ -0,0 +1,299 @@ +<!DOCTYPE html> +<meta charset="utf-8"> +<html> +<head> + <script src="d3.v3.min.js"></script> + <script type="text/javascript" src="jquery-1.7.1.min.js"></script> + <script src="smoothie.js"></script> + <style type="text/css"> + .circle, .link { stroke: #56f; stroke-width: 3px; stroke-opacity: 0.75; } + .nodetext { pointer-events: none; font: 10px sans-serif; } + body { width:100%; height:100%; margin:0; padding:0; overflow: hidden; } + svg, div, canvas { margin:0; padding:0; } + </style> +</head> +<body> +<div id="graph"></div> +<div> <canvas id="traffic" width="100%" height="150"></canvas></div> +</body> +<script type="text/javascript"> + +var smoothie = new SmoothieChart({'millisPerPixel': 300, 'grid': {'millisPerLine': 30000}, timestampFormatter:SmoothieChart.timeFormatter}); +smoothie.streamTo(document.getElementById("traffic"), 2000); + +//var line1 = new TimeSeries(); +//smoothie.addTimeSeries(line1); +var colorList = d3.scale.category20(); + +function myGraph(el) { + + var changed = false; + + // Add and remove elements on the graph object + this.addNode = function (id, radius, color, distance, x, y) { + title = id; + id = 'a' + id.replace(/\./g, "-"); + if (!distance) distance = 5; + distance *= w / 2000; + if (!radius) radius = 5; + var node = findNode(id); + if (!node) { + nodes.push({"id":id, "title": title, "distance":distance, "radius":radius, "active":2, "x":x, "y":y, "color":color}); + changed = true; + } else { + var visNode = vis.select("#" + id); + if (visNode) { + visNode.select("title").text(id); + visNode.select("circle").attr("r", radius); + } + node.distance = distance; + node.radius = radius; + node.active = 2; + node.color = color; + var s = servers[title]; + if (s && visNode) { + visNode.select("circle").style("fill", s.color); + //visNode.select("#" + id).select("circle").style("stroke", color); + } + } + } + + this.decay = function () { + for (var i = nodes.length - 1; i >= 0; --i) { + if ( nodes[i].active <= 0 ) { + for (var j = links.length - 1; j >= 0; --j) { + if ((links[j].source === nodes[i]) || (links[j].target === nodes[i])) links.splice(j,1); + } + nodes.splice(i, 1); + changed = true; + continue; + } + nodes[i].active--; + } + for (var i = links.length - 1; i >= 0; --i) { + if (links[i].active <= 0) { + links.splice(i, 1); + changed = true; + continue; + } + links[i].active--; + } + } + + this.removeNode = function (id) { + var i = 0; + var n = findNode(id); + while (i < links.length) { + if ((links[i]['source'] === n)||(links[i]['target'] == n)) links.splice(i,1); + else i++; + } + var index = findNodeIndex(id); + if(index !== undefined) { + nodes.splice(index, 1); + changed = true; + //update(); + } + } + + this.addLink = function (sourceId, targetId) { + sourceId = 'a' + sourceId.replace(/\./g, "-"); + targetId = 'a' + targetId.replace(/\./g, "-"); + var sourceNode = findNode(sourceId); + var targetNode = findNode(targetId); + + if ((sourceNode !== undefined) && (targetNode !== undefined)) { + var link = findLink(sourceNode, targetNode); + if (!link) { + links.push({"source": sourceNode, "target": targetNode, "active":5}); + //update(); + changed = true; + } else { + link.active = 5; + } + } + } + + var findNode = function (id) { + for (var i=0; i < nodes.length; i++) { + if (nodes[i].id === id) + return nodes[i] + } + } + + var findLink = function (sourceId, targetId) { + for (var i = 0; i < links.length; ++i) { + if ( (links[i].source === sourceId && links[i].target === targetId) + || (links[i].source === targetId && links[i].target === sourceId) ) + return links[i]; + } + } + + var findNodeIndex = function (id) { + for (var i=0; i < nodes.length; i++) { + if (nodes[i].id === id) + return i + }; + } + + var w = 100, h = 100; + + var updateBounds = function() { + w = window.innerWidth; + h = window.innerHeight - 150 - 10; + vis.attr("width", w); + vis.attr("height", h); + force.size([w, h]); + $(el).attr("width", w); + $(el).attr("height", h); + $("#traffic").attr("width", w); + } + + var vis = this.vis = d3.select(el).append("svg:svg") + .attr("width", w) + .attr("height", h); + + var force = d3.layout.force() + .gravity(.02) + .distance(function(bla) { return bla.source.distance * bla.target.distance; }) + .linkStrength(0.5) + .charge(function(bla) { return -bla.distance * 10 * bla.distance; }) + .friction(0.6) + .size([w, h]); + + var nodes = force.nodes(), + links = force.links(); + + this.update = function () { + if (!changed) + return; + update(); + } + + var update = function () { + changed = false; + + var node = vis.selectAll("g.node") + .data(nodes, function(d) { return d.id;}); + + var nodeEnter = node.enter().append("g") + .attr("class", "node") + .attr("id", function(d) { return d.id;}) + .on("mouseover", function(d) { + var s = servers[d.title]; + if (!s) return; + smoothie.seriesSet[s.index].options.lineWidth = 4; + }) + .on("mouseout", function(d) { + var s = servers[d.title]; + if (!s) return; + smoothie.seriesSet[s.index].options.lineWidth = 2; + }); + + nodeEnter.append("circle") + .attr("class", "circle") + .attr("r", function(d) { return d.radius; }) + .style("fill", function(d) { return d.color; }); + + nodeEnter.append("title"); + + nodeEnter.append("text") + .attr("class", "nodetext") + .attr("dx", -32) + .attr("dy", "-1em") + .text(function(d) {return d.title}); + + node.exit().remove(); + + var link = vis.selectAll("line.link") + .data(links, function(d) { return d.source.id + "-" + d.target.id; }); + + link.enter().insert("line") + .attr("class", "link"); + + link.exit().remove(); + + vis.selectAll('g.node').forEach(function(e){$('#graph').find('svg').append(e)}); + + var render = function() { + var fixX = function(x) { + return (x - lx) * scale + 20 + offX; + } + var fixY = function(y) { + return (y - ly) * scale + 20 + offY; + } + var lx = 1000, ly = 1000, ux = -1000, uy = -1000; + for (var i = 0; i < nodes.length; ++i) { + if (nodes[i].x < lx) lx = nodes[i].x; + if (nodes[i].x > ux) ux = nodes[i].x; + if (nodes[i].y < ly) ly = nodes[i].y; + if (nodes[i].y > uy) uy = nodes[i].y; + } + var width = (ux - lx), height = (uy - ly); + var scale; + var offX = 0, offY = 0; + if ( (width / w) > (height / h) ) { + scale = (w - 40) / width; + offY = (h - (height * scale + 20)) / 2; + } else { + scale = (h - 40) / height; + offX = (w - (width * scale + 20)) / 2; + } + link.attr("x1", function(d) { return fixX(d.source.x); }) + .attr("y1", function(d) { return fixY(d.source.y); }) + .attr("x2", function(d) { return fixX(d.target.x); }) + .attr("y2", function(d) { return fixY(d.target.y); }); + + node.attr("transform", function(d) { return "translate(" + fixX(d.x) + "," + fixY(d.y) + ")"; }); + }; + + force.on("tick", render); + + updateBounds(); + force.start(); + } + + update(); + $( window ).resize( update ); +} + +graph = new myGraph("#graph"); + +var servers = {}; +var serverCount = 0; + +setInterval( function() { + $.get('/data.json', function(data) { + var g = data.graph; + var stats = data.servers; + if (g) { + for (var i = 0; i < g.nodes.length; ++i) { + graph.addNode(g.nodes[i].name, g.nodes[i].radius, g.nodes[i].color, g.nodes[i].distance, g.nodes[i].x, g.nodes[i].y); + } + for (var i = 0; i < g.edges.length; ++i) { + graph.addLink(g.edges[i].source, g.edges[i].target); + } + } + if (stats) { + for (var i = 0; i < stats.length; ++i) { + var server = servers[stats[i].address]; + if (!server) { + servers[stats[i].address] = server = { 'lastTime': 0, 'lastSent': 0, 'line': new TimeSeries(), 'index': serverCount++ }; + server.color = colorList(server.index); + smoothie.addTimeSeries(server['line'], {lineWidth:2, strokeStyle: server.color}); + } + if (server['lastTime'] != 0) { + server['line'].append(new Date().getTime(), (stats[i].bytesSent - server['lastSent'])/1000/(data.timestamp - server.lastTime)); + //smoothie.seriesSet[server.index].options.strokeStyle = 'rgba(0,255,0,0.93)'; + } + server['lastTime'] = data.timestamp; + server['lastSent'] = stats[i].bytesSent; + } + } + + }, 'json').always(function() { + graph.decay(); + graph.update(); + }); + }, 2000); + +</script> |