Files
backend/src/common/logging/logging.module.ts
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feat: log unhandled errors and pretty dev output (WealthLedger/backend#120) (#126)
feat: log unhandled errors and pretty dev output (#120)
2026-10-24 15:06:34 +03:00

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3.0 KiB
TypeScript

import type { Request, Response } from 'express';
import type { Options } from 'pino-http';
import { Global, Module } from '@nestjs/common';
import { ConfigService } from '@nestjs/config';
import { LoggerModule } from 'nestjs-pino';
import { randomUUID } from 'node:crypto';
import { constants as httpStatus } from 'node:http2';
import { Environment } from '../../config/env.validation';
import { StructuredLogger } from './structured-logger.service';
const uuid = /^[0-9a-f]{8}-[0-9a-f]{4}-[1-8][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
function completion(request: Request, response: Response, value: { responseTime: number }) {
const route: unknown = request.route;
const path = typeof route === 'object' && route !== null && 'path' in route &&
typeof route.path === 'string'
? `${request.baseUrl}${route.path}`
: '<unmatched>';
return {
method: request.method,
route: path,
status: response.statusCode,
durationMs: Math.round(value.responseTime),
...(typeof response.locals.publicErrorCode === 'string' ? { code: response.locals.publicErrorCode } : {}),
...(typeof response.locals.invalidFields === 'string' ? { invalidFields: response.locals.invalidFields } : {}),
};
}
export function loggingOptions(config: ConfigService<Environment, true>): Options<Request, Response> {
return {
level: config.getOrThrow('LOG_LEVEL'),
messageKey: 'message',
// ponytail: development-only pretty output; production never loads pino-pretty.
...(process.env['NODE_ENV'] === 'development'
? { transport: { target: 'pino-pretty', options: { colorize: true, singleLine: true, messageKey: 'message' } } }
: {}),
genReqId: (_request, response) => {
const id = randomUUID();
response.setHeader('X-Request-ID', id);
return id;
},
customProps: (request) => {
const incoming = request.header('x-request-id');
return { requestId: request.id, ...(incoming && uuid.test(incoming) ? { clientRequestId: incoming } : {}) };
},
customLogLevel: (_request, response) => {
if (response.statusCode >= httpStatus.HTTP_STATUS_INTERNAL_SERVER_ERROR) return 'error';
if ([httpStatus.HTTP_STATUS_FORBIDDEN, httpStatus.HTTP_STATUS_TOO_MANY_REQUESTS, httpStatus.HTTP_STATUS_UNAUTHORIZED].includes(response.statusCode)) return 'warn';
return 'info';
},
customSuccessMessage: () => 'http.request.completed',
customErrorMessage: () => 'http.request.completed',
customSuccessObject: completion,
customErrorObject: (request, response, _error, value: { responseTime: number }) => completion(request, response, value),
redact: ['req.headers.authorization', 'req.headers.cookie', 'req.body'],
serializers: { req: () => undefined },
};
}
@Global()
@Module({
imports: [LoggerModule.forRootAsync<Request, Response>({
inject: [ConfigService],
useFactory: (config: ConfigService<Environment, true>) => ({ pinoHttp: loggingOptions(config), assignResponse: true }),
})],
providers: [StructuredLogger],
exports: [StructuredLogger],
})
export class LoggingModule {}