cc9a6db853
Ref: #1379 This takes a naive approach to font-width computation, the most compute-intensive part of rendering badges. 1. Add the widths of the individual characters. - These widths are measured on startup using PDFKit. 2. For each character pair, add a kerning adjustment - The difference between the width of each character pair, and the sum of the characters' separate widths. - These are computed for each character pair on startup using PDFKit. 3. For a string with characters outside the printable ASCII character set, fall back to PDFKit. This branch averaged 0.041 ms in `makeBadge`, compared to 0.144 ms on master, a speedup of 73%. That was on a test of 10,000 consecutive requests (using the `benchmark-performance.sh` script, now checked in). The speedup applies to badges containing exclusively printable ASCII characters. It wouldn't be as dramatic on non-ASCII text. Though, we could add some frequently used non-ASCII characters to the cached set.
74 lines
1.8 KiB
JavaScript
74 lines
1.8 KiB
JavaScript
'use strict';
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// This file should only be required by server.js. To simplify testing, config
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// should be injected into other components needing it.
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const url = require('url');
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const envFlag = require('node-env-flag');
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const defaults = require('./defaults');
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function envArray(envVar, defaultValue, delimiter) {
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delimiter = delimiter || ',';
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if (envVar) {
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return envVar.split(delimiter);
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} else {
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return defaultValue;
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}
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}
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const isSecure = envFlag(process.env.HTTPS, false);
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const port = +process.env.PORT || +process.argv[2] || (isSecure ? 443 : 80);
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const address = process.env.BIND_ADDRESS || process.argv[3] || '::';
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const baseUri = url.format({
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protocol: isSecure ? 'https' : 'http',
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hostname: address,
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port,
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pathname: '/',
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});
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// The base URI provides a suitable value for development. Production should
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// configure this.
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const allowedOrigin = envArray(process.env.ALLOWED_ORIGIN, baseUri.replace(/\/$/, ''), ',');
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const config = {
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bind: {
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port,
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address,
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},
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ssl: {
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isSecure,
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key: process.env.HTTPS_KEY,
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cert: process.env.HTTPS_CRT,
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},
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baseUri,
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redirectUri: process.env.REDIRECT_URI || process.env.INFOSITE,
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cors: {
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allowedOrigin,
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},
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persistence: {
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dir: process.env.PERSISTENCE_DIR || './private',
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},
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services: {
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github: {
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baseUri: process.env.GITHUB_URL || 'https://api.github.com',
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debug: {
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enabled: envFlag(process.env.GITHUB_DEBUG_ENABLED, false),
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intervalSeconds: process.env.GITHUB_DEBUG_INTERVAL_SECONDS || 300,
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},
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},
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},
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font: {
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path: process.env.FONT_PATH || defaults.font.path,
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fallbackPath: process.env.FALLBACK_FONT_PATH,
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},
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profiling: {
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makeBadge: envFlag(process.env.PROFILE_MAKE_BADGE),
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},
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};
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if (config.font.fallbackPath) {
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console.log('FALLBACK_FONT_PATH is deprecated. Please use FONT_PATH.');
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}
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module.exports = config;
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