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ee9e2a2eb6
Evidence has shown that use of primordials have sometimes an impact of performance. This commit reverts the changes who are most likely to be responsible for performance regression in the HTTP response path. PR-URL: https://github.com/nodejs/node/pull/38248 Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Michaël Zasso <targos@protonmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com>
118 lines
3.2 KiB
JavaScript
118 lines
3.2 KiB
JavaScript
'use strict';
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const {
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FunctionPrototypeBind,
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ObjectCreate,
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ObjectDefineProperty,
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RegExp,
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RegExpPrototypeTest,
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SafeArrayIterator,
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StringPrototypeToLowerCase,
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StringPrototypeToUpperCase,
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} = primordials;
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const { inspect, format, formatWithOptions } = require('internal/util/inspect');
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// `debugs` is deliberately initialized to undefined so any call to
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// debuglog() before initializeDebugEnv() is called will throw.
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let debugImpls;
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let debugEnvRegex = /^$/;
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let testEnabled;
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// `debugEnv` is initial value of process.env.NODE_DEBUG
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function initializeDebugEnv(debugEnv) {
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debugImpls = ObjectCreate(null);
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if (debugEnv) {
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debugEnv = debugEnv.replace(/[|\\{}()[\]^$+?.]/g, '\\$&')
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.replace(/\*/g, '.*')
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.replace(/,/g, '$|^')
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.toUpperCase();
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debugEnvRegex = new RegExp(`^${debugEnv}$`, 'i');
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}
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testEnabled = FunctionPrototypeBind(RegExpPrototypeTest, null, debugEnvRegex);
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}
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// Emits warning when user sets
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// NODE_DEBUG=http or NODE_DEBUG=http2.
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function emitWarningIfNeeded(set) {
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if ('HTTP' === set || 'HTTP2' === set) {
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process.emitWarning('Setting the NODE_DEBUG environment variable ' +
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'to \'' + StringPrototypeToLowerCase(set) + '\' can expose sensitive ' +
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'data (such as passwords, tokens and authentication headers) ' +
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'in the resulting log.');
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}
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}
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const noop = () => {};
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function debuglogImpl(enabled, set) {
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if (debugImpls[set] === undefined) {
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if (enabled) {
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const pid = process.pid;
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emitWarningIfNeeded(set);
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debugImpls[set] = function debug(...args) {
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const colors = process.stderr.hasColors && process.stderr.hasColors();
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const msg = formatWithOptions({ colors }, ...args);
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const coloredPID = inspect(pid, { colors });
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process.stderr.write(format('%s %s: %s\n', set, coloredPID, msg));
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};
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} else {
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debugImpls[set] = noop;
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}
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}
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return debugImpls[set];
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}
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// debuglogImpl depends on process.pid and process.env.NODE_DEBUG,
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// so it needs to be called lazily in top scopes of internal modules
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// that may be loaded before these run time states are allowed to
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// be accessed.
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function debuglog(set, cb) {
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function init() {
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set = StringPrototypeToUpperCase(set);
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enabled = testEnabled(set);
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}
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let debug = (...args) => {
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init();
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// Only invokes debuglogImpl() when the debug function is
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// called for the first time.
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debug = debuglogImpl(enabled, set);
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if (typeof cb === 'function')
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cb(debug);
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switch (args.length) {
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case 0: return debug();
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case 1: return debug(args[0]);
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case 2: return debug(args[0], args[1]);
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default: return debug(...new SafeArrayIterator(args));
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}
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};
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let enabled;
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let test = () => {
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init();
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test = () => enabled;
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return enabled;
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};
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const logger = (...args) => {
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switch (args.length) {
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case 0: return debug();
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case 1: return debug(args[0]);
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case 2: return debug(args[0], args[1]);
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default: return debug(...new SafeArrayIterator(args));
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}
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};
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ObjectDefineProperty(logger, 'enabled', {
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get() {
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return test();
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},
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configurable: true,
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enumerable: true
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});
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return logger;
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}
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module.exports = {
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debuglog,
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initializeDebugEnv
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};
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