После настройки моего проекта с локальным эмулятором функций Firebase в качестве серверной части и вызова моей функции Firebase onCall из моего эмулятора Android я получаю это очень неинформативное сообщение об ошибке PlatformException(functionsError, Cloud function failed with exception., {code: INTERNAL, details: null, message: INTERNAL}). Полное сообщение об ошибке ниже:
E/flutter (20862): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: PlatformException(functionsError, Cloud function failed with exception., {code: INTERNAL, details: null, message: INTERNAL}) E/flutter (21445): #0 StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:569:7) E/flutter (21445): #1 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:156:18) E/flutter (21445): <asynchronous suspension> E/flutter (21445): #2 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:329:12) E/flutter (21445): #3 MethodChannelCloudFunctions.callCloudFunction (package:cloud_functions_platform_interface/src/method_channel_cloud_functions.dart:43:15) E/flutter (21445): #4 HttpsCallable.call (package:cloud_functions/src/https_callable.dart:33:12) E/flutter (21445): #5 ApiService.loadUserLessonsByLessonIds (package:kim/services/api.dart:28:21) E/flutter (21445): #6 MapScreen.build.<anonymous closure> (package:kim/screens/map.dart:170:34) E/flutter (21445): #7 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:779:19) E/flutter (21445): #8 _InkResponseState.build.<anonymous closure> (package:flutter/src/material/ink_well.dart:862:36) E/flutter (21445): #9 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:182:24) E/flutter (21445): #10 TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:504:11) E/flutter (21445): #11 BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:282:5) E/flutter (21445): #12 BaseTapGestureRecognizer.handlePrimaryPointer (package:flutter/src/gestures/tap.dart:217:7) E/flutter (21445): #13 PrimaryPointerGestureRecognizer.handleEvent (package:flutter/src/gestures/recognizer.dart:475:9) E/flutter (21445): #14 PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:76:12) E/flutter (21445): #15 PointerRouter._dispatchEventToRoutes.<anonymous closure> (package:flutter/src/gestures/pointer_router.dart:122:9) E/flutter (21445): #16 _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:379:8) E/flutter (21445): #17 PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:120:18) E/flutter (21445): #18 PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:106:7) E/flutter (21445): #19 GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:218:19) E/flutter (21445): #20 GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:198:22) E/flutter (21445): #21 GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:156:7) E/flutter (21445): #22 GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:102:7) E/flutter (21445): #23 GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:86:7) E/flutter (21445): #24 _rootRunUnary (dart:async/zone.dart:1196:13) E/flutter (21445): #25 _CustomZone.runUnary (dart:async/zone.dart:1085:19) E/flutter (21445): #26 _CustomZone.runUnaryGuarded (dart:async/zone.dart:987:7) E/flutter (21445): #27 _invoke1 (dart:ui/hooks.dart:275:10) E/flutter (21445): #28 _dispatchPointerDataPacket (dart:ui/hooks.dart:184:5) E/flutter (21445):
Код сервера index.ts:
import * as functions from ‘firebase-functions’ interface LoadUserLessonsData { lessonIds: string[] } export const loadUserLessons = functions.https.onCall((data: LoadUserLessonsData, context) => { const uid = context.auth?.uid const ids = data.lessonIds console.log(uid, ids) })
Окно консоли сервера после запуска firebase emulators:start —only functions:
… + functions[loadUserLessons]: http function initialized (https://localhost:5001/project-name/us-central1/loadUserLessons). … ┌───────────┬────────────────┬─────────────────────────────────┐ │ Emulator │ Host:Port │ View in Emulator UI │ ├───────────┼────────────────┼─────────────────────────────────┤ │ Functions │ localhost:5001 │ https://localhost:4000/functions │ └───────────┴────────────────┴─────────────────────────────────┘
Код клиентского приложения api.dart:
import ‘dart:io’; import ‘package:cloud_functions/cloud_functions.dart’; import ‘package:myapp/services/config.dart’; class ApiService { static final ApiService _apiService = ApiService._internal(); static final _functions = CloudFunctions.instance; ApiService._internal(); factory ApiService() { init(); return _apiService; } static void init() { // 10.0.2.2 is the special IP address to connect to the ‘localhost’ of the host computer from an Android emulator. final origin = Platform.isAndroid ? ‘https://10.0.2.2:5001’ : ‘https://localhost:5001’; _functions.useFunctionsEmulator(origin: origin); } static Future<dynamic> loadUserLessons(List<String> lessonIds) { final HttpsCallable callable = _functions.getHttpsCallable( functionName: ‘loadUserLessons’, ); return callable.call({ ‘lessonIds’: lessonIds, }); } }
Что я могу сделать, чтобы правильно настроить приложение Flutter для подключения к локальному эмулятору?
Следует отметить, что сообщение об ошибке одинаково независимо от того, запущен эмулятор или нет. Эмулятор также не регистрирует никаких событий в журналах консоли. Однако, когда эмулятор запущен, отправка настраиваемого запроса (например, через приложение Android, такое как REST Api Client) в конечную точку функции заставляет эмулятор реагировать.
Это означает, что проблема заключается исключительно в коде Flutter (мой или cloud_functions пакет Flutter). По крайней мере, таков мой вывод.
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