mirror of https://github.com/flutter/samples.git
Fix crashlytics in game_template (#1998)
Filip Hracek
1 year ago
committed by
GitHub
parent
b0f2a6a86d
commit
612cf191d0
@ -1,103 +0,0 @@
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// Copyright 2022, the Flutter project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'dart:async';
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import 'dart:isolate';
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import 'package:firebase_crashlytics/firebase_crashlytics.dart';
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import 'package:flutter/foundation.dart';
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import 'package:flutter/widgets.dart';
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import 'package:logging/logging.dart';
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/// Runs [mainFunction] in a guarded [Zone].
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///
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/// If a non-null [FirebaseCrashlytics] instance is provided through
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/// [crashlytics], then all errors will be reported through it.
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///
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/// These errors will also include latest logs from anywhere in the app
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/// that use `package:logging`.
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Future<void> guardWithCrashlytics(
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void Function() mainFunction, {
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required FirebaseCrashlytics? crashlytics,
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}) async {
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// Running the initialization code and [mainFunction] inside a guarded
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// zone, so that all errors (even those occurring in callbacks) are
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// caught and can be sent to Crashlytics.
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await runZonedGuarded<Future<void>>(() async {
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if (kDebugMode) {
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// Log more when in debug mode.
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Logger.root.level = Level.FINE;
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}
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// Subscribe to log messages.
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Logger.root.onRecord.listen((record) {
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final message = '${record.level.name}: ${record.time}: '
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'${record.loggerName}: '
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'${record.message}';
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debugPrint(message);
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// Add the message to the rotating Crashlytics log.
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crashlytics?.log(message);
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if (record.level >= Level.SEVERE) {
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crashlytics?.recordError(message, filterStackTrace(StackTrace.current),
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fatal: true);
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}
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});
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// Pass all uncaught errors from the framework to Crashlytics.
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if (crashlytics != null) {
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WidgetsFlutterBinding.ensureInitialized();
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FlutterError.onError = crashlytics.recordFlutterFatalError;
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}
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if (!kIsWeb) {
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// To catch errors outside of the Flutter context, we attach an error
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// listener to the current isolate.
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Isolate.current.addErrorListener(RawReceivePort((dynamic pair) async {
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final errorAndStacktrace = pair as List<dynamic>;
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await crashlytics?.recordError(
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errorAndStacktrace.first, errorAndStacktrace.last as StackTrace?,
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fatal: true);
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}).sendPort);
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}
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// Run the actual code.
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mainFunction();
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}, (error, stack) {
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// This sees all errors that occur in the runZonedGuarded zone.
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debugPrint('ERROR: $error\n\n'
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'STACK:$stack');
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crashlytics?.recordError(error, stack, fatal: true);
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});
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}
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/// Takes a [stackTrace] and creates a new one, but without the lines that
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/// have to do with this file and logging. This way, Crashlytics won't group
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/// all messages that come from this file into one big heap just because
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/// the head of the StackTrace is identical.
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///
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/// See this:
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/// https://stackoverflow.com/questions/47654410/how-to-effectively-group-non-fatal-exceptions-in-crashlytics-fabrics.
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@visibleForTesting
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StackTrace filterStackTrace(StackTrace stackTrace) {
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try {
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final lines = stackTrace.toString().split('\n');
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final buf = StringBuffer();
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for (final line in lines) {
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if (line.contains('crashlytics.dart') ||
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line.contains('_BroadcastStreamController.java') ||
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line.contains('logger.dart')) {
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continue;
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}
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buf.writeln(line);
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}
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return StackTrace.fromString(buf.toString());
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} catch (e) {
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debugPrint('Problem while filtering stack trace: $e');
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}
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// If there was an error while filtering,
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// return the original, unfiltered stack track.
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return stackTrace;
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}
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@ -1,39 +0,0 @@
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// Copyright 2022, the Flutter project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'package:game_template/src/crashlytics/crashlytics.dart';
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import 'package:test/test.dart';
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void main() {
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group('filterStackTrace', () {
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test('keeps current stacktrace intact', () {
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final original = StackTrace.current;
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final filtered = filterStackTrace(original).toString().trim();
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expect(filtered, equals(original.toString().trim()));
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});
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test('parses an empty stacktrace', () {
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const original = StackTrace.empty;
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final filtered = filterStackTrace(original).toString().trim();
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expect(filtered, equals(original.toString().trim()));
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});
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test('removes the head of an example stacktrace', () {
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final original = StackTrace.fromString(
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''' at guardWithCrashlytics.<fn>.<fn>(crashlytics.dart:32)
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at _BroadcastStreamController.add(_BroadcastStreamController.java)
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at Logger._publish(logger.dart:276)
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at Logger.log(logger.dart:200)
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at Logger.severe(logger.dart:258)
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at GamesServicesController.initialize(games_services.dart:23)''');
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final filtered = filterStackTrace(original).toString().trim();
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expect(filtered, isNot(original.toString().trim()));
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expect(filtered, isNot(contains('at guardWithCrashlytics')));
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expect(filtered, contains('at GamesServicesController'));
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});
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});
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}
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