81 lines
2 KiB
TypeScript
81 lines
2 KiB
TypeScript
// Copyright 2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import * as bunyan from 'bunyan';
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import { redactAll } from '../../js/modules/privacy';
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import { missingCaseError } from '../util/missingCaseError';
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import { reallyJsonStringify } from '../util/reallyJsonStringify';
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// These match [Bunyan's recommendations][0].
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// [0]: https://www.npmjs.com/package/bunyan#levels
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export enum LogLevel {
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Fatal = 60,
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Error = 50,
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Warn = 40,
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Info = 30,
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Debug = 20,
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Trace = 10,
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}
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// These match [Bunyan's core fields][1].
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// [1]: https://www.npmjs.com/package/bunyan#core-fields
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export type LogEntryType = {
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level: LogLevel;
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msg: string;
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time: string;
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};
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const logLevels = new Set<LogLevel>([
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LogLevel.Fatal,
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LogLevel.Error,
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LogLevel.Warn,
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LogLevel.Info,
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LogLevel.Debug,
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LogLevel.Trace,
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]);
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function isLogLevel(value: unknown): value is LogLevel {
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return typeof value === 'number' && logLevels.has(value);
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}
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function isValidTime(value: unknown): value is string {
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return typeof value === 'string' && !Number.isNaN(new Date(value).getTime());
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}
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export function isLogEntry(value: unknown): value is LogEntryType {
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if (!value || typeof value !== 'object' || Array.isArray(value)) {
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return false;
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}
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const { level, time, msg } = value as Record<string, unknown>;
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return typeof msg === 'string' && isLogLevel(level) && isValidTime(time);
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}
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export function getLogLevelString(value: LogLevel): bunyan.LogLevelString {
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switch (value) {
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case LogLevel.Fatal:
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return 'fatal';
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case LogLevel.Error:
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return 'error';
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case LogLevel.Warn:
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return 'warn';
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case LogLevel.Info:
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return 'info';
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case LogLevel.Debug:
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return 'debug';
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case LogLevel.Trace:
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return 'trace';
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default:
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throw missingCaseError(value);
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}
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}
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export function cleanArgs(args: ReadonlyArray<unknown>): string {
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return redactAll(
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args
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.map(item =>
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typeof item === 'string' ? item : reallyJsonStringify(item)
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)
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.join(' ')
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);
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}
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