signal-desktop/ts/logging/shared.ts
2021-07-30 09:43:16 -07:00

108 lines
2.9 KiB
TypeScript

// Copyright 2021 Signal Messenger, LLC
// SPDX-License-Identifier: AGPL-3.0-only
import * as pino from 'pino';
import { isRecord } from '../util/isRecord';
import { redactAll } from '../util/privacy';
import { missingCaseError } from '../util/missingCaseError';
import { reallyJsonStringify } from '../util/reallyJsonStringify';
export type FetchLogIpcData = {
capabilities: Record<string, unknown>;
remoteConfig: Record<string, unknown>;
statistics: Record<string, unknown>;
user: Record<string, unknown>;
// We expect `logEntries` to be `Array<LogEntryType>`, but we don't validate that
// upfront—we only validate it when we go to log each line. This improves the
// performance, because we don't have to iterate over every single log entry twice. It
// also means we can log entries if only some of them are invalid.
logEntries: Array<unknown>;
};
// We don't use Zod here because it'd be slow parsing all of the log entries.
// Unfortunately, Zod is a bit slow even with `z.array(z.unknown())`.
export const isFetchLogIpcData = (data: unknown): data is FetchLogIpcData =>
isRecord(data) &&
isRecord(data.capabilities) &&
isRecord(data.remoteConfig) &&
isRecord(data.statistics) &&
isRecord(data.user) &&
Array.isArray(data.logEntries);
// These match [Pino's recommendations][0].
// [0]: https://getpino.io/#/docs/api?id=loggerlevels-object
export enum LogLevel {
Fatal = 60,
Error = 50,
Warn = 40,
Info = 30,
Debug = 20,
Trace = 10,
}
// These match [Pino's core fields][1].
// [1]: https://getpino.io/#/?id=usage
export type LogEntryType = Readonly<{
level: LogLevel;
msg: string;
time: string;
}>;
// The code below is performance sensitive since it runs for > 100k log entries
// whenever we want to send the debug log. We can't use `zod` because it clones
// the data on successful parse and ruins the performance.
export const isLogEntry = (data: unknown): data is LogEntryType => {
if (!isRecord(data)) {
return false;
}
const { level, msg, time } = data as Partial<LogEntryType>;
if (typeof level !== 'number') {
return false;
}
if (!LogLevel[level]) {
return false;
}
if (typeof msg !== 'string') {
return false;
}
if (typeof time !== 'string') {
return false;
}
return !Number.isNaN(new Date(time).getTime());
};
export function getLogLevelString(value: LogLevel): pino.Level {
switch (value) {
case LogLevel.Fatal:
return 'fatal';
case LogLevel.Error:
return 'error';
case LogLevel.Warn:
return 'warn';
case LogLevel.Info:
return 'info';
case LogLevel.Debug:
return 'debug';
case LogLevel.Trace:
return 'trace';
default:
throw missingCaseError(value);
}
}
export function cleanArgs(args: ReadonlyArray<unknown>): string {
return redactAll(
args
.map(item =>
typeof item === 'string' ? item : reallyJsonStringify(item)
)
.join(' ')
);
}