| 1 | import type { Request, Response } from 'express' |
| 2 | import type { Observable } from 'rxjs' |
| 3 | |
| 4 | import type { CommonResponse } from '../interfaces' |
| 5 | import { |
| 6 | ArgumentsHost, |
| 7 | Catch, |
| 8 | ExceptionFilter, |
| 9 | HttpException, |
| 10 | InternalServerErrorException, |
| 11 | Logger, |
| 12 | UnauthorizedException, |
| 13 | } from '@nestjs/common' |
| 14 | import { of } from 'rxjs' |
| 15 | import { AppException } from '../exceptions' |
| 16 | import { getCurrentRequestId, getRequestIdFromHeaders } from '../interceptors/propagation.interceptor' |
| 17 | import { getExceptionPayload } from '../utils' |
| 18 | |
| 19 | export interface GlobalExceptionFilterOptions { |
| 20 | returnBadRequestDetails?: boolean |
| 21 | } |
| 22 | |
| 23 | @Catch() |
| 24 | export class GlobalExceptionFilter<T> implements ExceptionFilter<T> { |
| 25 | protected readonly logger = new Logger(GlobalExceptionFilter.name) |
| 26 | constructor(private options: GlobalExceptionFilterOptions = {}) { } |
| 27 | |
| 28 | catch(exception: T, host: ArgumentsHost): void | Observable<CommonResponse<unknown> | void> { |
| 29 | if ( |
| 30 | exception instanceof InternalServerErrorException |
| 31 | ) { |
| 32 | this.logger.fatal(exception) |
| 33 | } |
| 34 | else if (exception instanceof UnauthorizedException || exception instanceof AppException) { |
| 35 | this.logger.warn(exception) |
| 36 | } |
| 37 | else if (exception instanceof HttpException) { |
| 38 | this.logger.error(exception) |
| 39 | } |
| 40 | else { |
| 41 | this.logger.fatal(exception) |
| 42 | } |
| 43 | |
| 44 | const payload = getExceptionPayload(exception, this.options.returnBadRequestDetails) |
| 45 | |
| 46 | return this.handleError(host, { |
| 47 | ...payload, |
| 48 | timestamp: Date.now(), |
| 49 | }) |
| 50 | } |
| 51 | |
| 52 | handleError(host: ArgumentsHost, payload: CommonResponse<unknown>) { |
| 53 | const type = host.getType() |
| 54 | |
| 55 | if (type === 'rpc') { |
| 56 | return this.handleRpcError(host, payload) |
| 57 | } |
| 58 | return this.handleHttpError(host, payload) |
| 59 | } |
| 60 | |
| 61 | private handleRpcError( |
| 62 | host: ArgumentsHost, |
| 63 | payload: CommonResponse<unknown>, |
| 64 | ) { |
| 65 | const requestId = getCurrentRequestId() |
| 66 | return of({ |
| 67 | ...payload, |
| 68 | ...(requestId ? { requestId } : {}), |
| 69 | }) |
| 70 | } |
| 71 | |
| 72 | private handleHttpError( |
| 73 | host: ArgumentsHost, |
| 74 | payload: CommonResponse<unknown>, |
| 75 | ) { |
| 76 | const ctx = host.switchToHttp() |
| 77 | const request = ctx.getRequest<Request>() |
| 78 | const response = ctx.getResponse<Response>() |
| 79 | const requestId = getRequestIdFromHeaders(request.headers) |
| 80 | |
| 81 | response.status(200).json({ |
| 82 | ...payload, |
| 83 | ...(requestId ? { requestId } : {}), |
| 84 | }) |
| 85 | } |
| 86 | } |
| 87 |