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96 lines
2.6 KiB
96 lines
2.6 KiB
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.genRedactedString = exports.getStringValue = exports.MAX_ARGUMENT_LENGTH = void 0;
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const debug_1 = require("debug");
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const MAX_ARGUMENT_LENGTH = 200;
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exports.MAX_ARGUMENT_LENGTH = MAX_ARGUMENT_LENGTH;
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const NAMESPACE_PREFIX = "ioredis";
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/**
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* helper function that tried to get a string value for
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* arbitrary "debug" arg
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*/
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function getStringValue(v) {
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if (v === null) {
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return;
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}
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switch (typeof v) {
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case "boolean":
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return;
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case "number":
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return;
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case "object":
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if (Buffer.isBuffer(v)) {
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return v.toString("hex");
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}
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if (Array.isArray(v)) {
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return v.join(",");
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}
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try {
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return JSON.stringify(v);
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}
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catch (e) {
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return;
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}
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case "string":
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return v;
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}
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}
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exports.getStringValue = getStringValue;
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/**
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* helper function that redacts a string representation of a "debug" arg
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*/
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function genRedactedString(str, maxLen) {
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const { length } = str;
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return length <= maxLen
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? str
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: str.slice(0, maxLen) + ' ... <REDACTED full-length="' + length + '">';
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}
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exports.genRedactedString = genRedactedString;
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/**
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* a wrapper for the `debug` module, used to generate
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* "debug functions" that trim the values in their output
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*/
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function genDebugFunction(namespace) {
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const fn = (0, debug_1.default)(`${NAMESPACE_PREFIX}:${namespace}`);
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function wrappedDebug(...args) {
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if (!fn.enabled) {
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return; // no-op
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}
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// we skip the first arg because that is the message
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for (let i = 1; i < args.length; i++) {
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const str = getStringValue(args[i]);
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if (typeof str === "string" && str.length > MAX_ARGUMENT_LENGTH) {
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args[i] = genRedactedString(str, MAX_ARGUMENT_LENGTH);
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}
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}
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return fn.apply(null, args);
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}
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Object.defineProperties(wrappedDebug, {
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namespace: {
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get() {
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return fn.namespace;
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},
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},
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enabled: {
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get() {
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return fn.enabled;
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},
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},
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destroy: {
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get() {
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return fn.destroy;
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},
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},
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log: {
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get() {
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return fn.log;
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},
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set(l) {
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fn.log = l;
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},
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},
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});
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return wrappedDebug;
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}
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exports.default = genDebugFunction;
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