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// Logging with levels and redaction (DESIGN 2.7). Never logs secretKey, signature, token or audio.
/** Log levels, from quiet to verbose. */
export const LogLevel = Object.freeze({
OFF: 'OFF',
ERROR: 'ERROR',
WARN: 'WARN',
INFO: 'INFO',
DEBUG: 'DEBUG',
});
const RANK = { OFF: 0, ERROR: 1, WARN: 2, INFO: 3, DEBUG: 4 };
/** True when level is one of LogLevel. */
export function isLogLevel(level) {
return typeof level === 'string' && Object.prototype.hasOwnProperty.call(RANK, level);
}
/** Default sink: the platform console. */
export function consoleLogSink(level, tag, message, error) {
const c = typeof console !== 'undefined' ? console : null;
/* c8 ignore next */
if (!c) return;
const line = `[yugu-web-sdk] ${level} ${tag}: ${message}`;
let fn;
if (level === LogLevel.ERROR) fn = c.error;
else if (level === LogLevel.WARN) fn = c.warn;
else if (level === LogLevel.INFO) fn = c.info || c.log;
else fn = c.debug || c.log;
if (error != null) fn.call(c, line, error);
else fn.call(c, line);
}
/** appKey as its first 4 characters plus ***. */
export function maskAppKey(appKey) {
if (appKey == null || appKey === '') return '';
return String(appKey).slice(0, 4) + '***';
}
const SECRET_QUERY = /([?&](?:signature|sig|token|access_token|secretKey)=)[^&#\s"']*/gi;
const APPKEY_QUERY = /([?&]appKey=)([^&#\s"']{0,4})[^&#\s"']*/gi;
const BEARER = /(Bearer\s+)[A-Za-z0-9\-._~+/]+=*/g;
/** Mask credentials inside a URL or any text that may contain one. */
export function redactUrl(text) {
return String(text).replace(SECRET_QUERY, '$1***').replace(APPKEY_QUERY, '$1$2***').replace(BEARER, '$1***');
}
/** Copy of a header map with credentials masked. */
export function redactHeaders(headers) {
const out = {};
for (const [k, v] of Object.entries(headers || {})) {
const lk = k.toLowerCase();
if (lk === 'x-signature' || lk === 'authorization') out[k] = lk === 'authorization' ? 'Bearer ***' : '***';
else if (lk === 'x-app-key') out[k] = maskAppKey(v);
else out[k] = v;
}
return out;
}
/** Internal logger. Sink failures never reach the caller. */
export class Logger {
constructor(level, sink, secrets) {
this.level = level || LogLevel.WARN;
this.sink = typeof sink === 'function' ? sink : consoleLogSink;
this.secrets = (secrets || []).filter((s) => typeof s === 'string' && s.length >= 4);
}
enabled(level) {
return RANK[level] > 0 && RANK[level] <= RANK[this.level];
}
scrub(message) {
let m = redactUrl(message);
for (const s of this.secrets) m = m.split(s).join('***');
return m;
}
log(level, tag, message, error) {
if (!this.enabled(level)) return;
try {
this.sink(level, tag, this.scrub(message), error == null ? null : error);
} catch (_) {
/* a failing sink must not break the SDK */
}
}
error(tag, message, error) {
this.log(LogLevel.ERROR, tag, message, error);
}
warn(tag, message, error) {
this.log(LogLevel.WARN, tag, message, error);
}
info(tag, message, error) {
this.log(LogLevel.INFO, tag, message, error);
}
debug(tag, message, error) {
this.log(LogLevel.DEBUG, tag, message, error);
}
}
/** Calls an optional hook on the metrics EventListener; failures are logged, never thrown. */
export function callHook(target, name, args, logger) {
if (!target) return;
const fn = target[name];
if (typeof fn !== 'function') return;
try {
fn.apply(target, args);
} catch (e) {
if (logger) logger.error('event', `eventListener.${name} threw`, e);
}
}
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