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49 lines
1.0 KiB
49 lines
1.0 KiB
const chart = require('ascii-chart');
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function pointsFromBandwidthData(values, numPoints) {
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// Define vars
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const len = values.length;
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const points = [];
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let i = 0;
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let size;
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// Split values into n points
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if (numPoints < 2) {
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points.push(values);
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} else {
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if (len % numPoints === 0) {
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size = Math.floor(len / numPoints);
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while (i < len) {
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points.push(values.slice(i, i += size));
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}
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}
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while (i < len) {
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size = Math.ceil((len - i) / numPoints--);
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points.push(values.slice(i, i += size));
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}
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}
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// Return points
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return points
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// Calculate average value of each point
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.map(point => Math.round(point.reduce((a, b) => a + b) / point.length))
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// Convert bytes to megabytes
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.map(bytes => Number((bytes / 1000000).toPrecision(3)));
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}
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module.exports = values => {
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if (!values || values.length < 1) {
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return '';
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}
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const points = pointsFromBandwidthData(values, 57);
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return chart(points, {
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width: 120,
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height: 20,
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padding: 0,
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pointChar: '*',
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negativePointChar: '.',
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axisChar: '.'
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});
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};
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