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google.charts.load('current', {packages: ['corechart']});
google.charts.setOnLoadCallback(drawAllChart);
/**
* Get data from /data/*.json and draw charts from it.
*/
function drawAllChart() {
$.get('file_list?v=' + Date.now(), function(data) {
/** @type {!Array<LineChart>} */
const chart = [];
const options = [];
/** @type {!Array<DataTable>} */
const tableData = [];
/** @type {!Array<Column>} */
const columns = [];
/** @type {!boolean} */
let chartInit = false;
/** @type {!number} */
let targetNum = 0;
/** @type {!Array<string>} */
const filenames = data.trim().split('\n');
// Make sure the length of the deffered object array is always > 1
$.when.apply($, [0].concat(filenames.map(function(filename) {
return $.getJSON("data/" + filename);
}))).then(function(){
/** @type {!Array<Object>} */
let responses = [].slice.call(arguments, 1);
for (let response of responses) {
let data = response[0];
if (!chartInit) {
targetNum = data.buildTargetResults.length;
initChartData(data.buildTargetResults, chart, tableData, options);
chartInit = true;
}
// Add rows for chart (including data)
for (let i = 0; i < targetNum; ++i) {
addRowsFromData(tableData[i], data.buildTargetResults[i].buildEnvResults);
}
}
afterChartData(targetNum, chart, columns, tableData, options);
});
});
}
/**
* Initialize all the chart data (columns, options, divs and chart objects)
* @param {!Array<Object>} buildTargetResults results for all build targets
* @param {!Array<LineChart>} chart all charts
* @param {!Array<DataTable>} tableData data for all charts
* @param {!Array<Object>} options options for all charts
*/
function initChartData (buildTargetResults, chart, tableData, options) {
for (let i = 0; i < buildTargetResults.length; ++i) {
const buildEnvResults = buildTargetResults[i].buildEnvResults;
// add divs to #content
$('<div id="target' + i + '" style="width: 100%; height: 600px"></div>')
.appendTo('#content');
// Options for each chart (including title)
options[i] = {
title: buildTargetResults[i].buildTargetConfig.description,
tooltip: { isHtml: true, trigger: 'both' },
intervals: { style: 'bars' },
chartArea: { width: '70%' }
};
// Create data table & add columns(line options)
tableData[i] = new google.visualization.DataTable();
addColumnsFromBuildEnv(tableData[i], buildEnvResults);
// Create chart objects
chart[i] = new google.visualization.LineChart(
document.getElementById('target' + i));
}
}
/**
* Called after getting and filling chart data, draw all charts
* @param {!number} targetNum number of target configs (charts)
* @param {!Array<LineChart>} chart all charts
* @param {!Array<Column>} columns columns of all charts
* @param {!Array<DataTable>} tableData data for all charts
* @param {!Array<Object>} options options for all charts
*/
function afterChartData (targetNum, chart, columns, tableData, options) {
// final steps to draw charts
for (let i = 0; i < targetNum; ++i) {
chart[i].draw(tableData[i], options[i]);
// event
columns[i] = [];
for (let j = 0; j < tableData[i].getNumberOfColumns(); j++) {
columns[i].push(j);
}
google.visualization.events.addListener(
chart[i], 'select', (function (x) {
return function () {
hideOrShow(chart[x], columns[x], tableData[x], options[x]);
};
})(i));
}
}
/**
* Add columns for each buildEnvResults/line.
* @param {!LineChart} lineChart
* @param {!Array<Object>} buildEnvResults build results
*/
function addColumnsFromBuildEnv (lineChart, buildEnvResults) {
lineChart.addColumn('string', 'version');
for (let buildEnvResult of buildEnvResults) {
lineChart.addColumn(
'number', buildEnvResult.config.description);
lineChart.addColumn({type:'number', role:'interval'});
lineChart.addColumn({type:'number', role:'interval'});
lineChart.addColumn(
{'type': 'string', 'role': 'tooltip', 'p': {'html': true}});
}
}
/**
* Add rows for each code version.
* @param {!LineChart} lineChart
* @param {!Array<Object>} buildEnvResults build results
*/
function addRowsFromData (lineChart, buildEnvResults) {
for (let j = 0; j < buildEnvResults[0].results.length; ++j) {
const row = [buildEnvResults[0].results[j].codeVersion.substr(0, 10)];
for (let buildEnvResult of buildEnvResults) {
const singleBuildResult = buildEnvResult.results[j];
const ave = getAverage(singleBuildResult.results);
const sd = getStandardDeviation(singleBuildResult.results, ave);
row.push(ave);
row.push(ave - sd);
row.push(ave + sd);
row.push(
createCustomHTMLContent(
singleBuildResult.results, singleBuildResult.codeVersion));
}
lineChart.addRow(row);
}
}
/**
* Get average of an array.
* @param {!Array<number>} arr
* @return {!number} the average
*/
function getAverage(arr) {
let ave = arr.reduce(function(a, b) { return a + b; });
ave /= arr.length;
return ave;
}
/**
* Get standard deviation of an array.
* @param {!Array<number>} arr
* @param {!number} ave average of the array
* @return {!number} the standard deviation
*/
function getStandardDeviation(arr, ave) {
let sd = 0;
for (let item of arr) {
const diff = ave - item;
sd += diff * diff;
}
sd = Math.sqrt(sd);
return sd;
}
/**
* Create html content as tooltip.
* @param {!Array<number>} arr array of build results
* @param {!string} codeVersion current code version
* @return {!string} the html content
*/
function createCustomHTMLContent(arr, codeVersion) {
let str = '<div style="padding:10px 10px 10px 10px;">';
for (let i = 0; i < arr.length; ++i) {
str += (i+1) + '-th run: ' + arr[i] + '<br>';
}
str += '<a href="https://github.com/bazelbuild/bazel/commit/' + codeVersion
+ '">commit</a></div>';
return str;
}
/**
* Hide or show one column/line in a chart.
* @param {!LineChart} chart the chart to operate
* @param {!Column} columns columns of current chart
* @param {!DataTable} tableData data for current chart
* @param {!Object} options options for current chart
*/
function hideOrShow(chart, columns, tableData, options) {
const sel = chart.getSelection();
// If selection length is 0, we deselected an element
if (sel.length <= 0 || sel[0].row !== null) {
return;
}
const col = sel[0].column;
if (columns[col] == col) {
// Hide the data series
columns[col] = {
label: tableData.getColumnLabel(col),
type: tableData.getColumnType(col),
calc: function () {
return null;
}
};
} else {
// Show the data series
columns[col] = col;
}
const view = new google.visualization.DataView(tableData);
view.setColumns(columns);
chart.draw(view, options);
}
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