50 lines
1.1 KiB
Dart
50 lines
1.1 KiB
Dart
library _youtube_explode.retry;
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import 'dart:async';
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import 'package:http/http.dart';
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import '../youtube_explode_dart.dart';
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/// Run the [function] each time an exception is thrown until the retryCount
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/// is 0.
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Future<T> retry<T>(
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YoutubeHttpClient? client, FutureOr<T> Function() function) async {
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var retryCount = 5;
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// ignore: literal_only_boolean_expressions
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while (true) {
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try {
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return await function();
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// ignore: avoid_catches_without_on_clauses
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} on Exception catch (e) {
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if (client != null && client.closed) {
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throw HttpClientClosedException();
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}
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retryCount -= getExceptionCost(e);
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if (retryCount <= 0) {
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rethrow;
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}
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await Future.delayed(const Duration(milliseconds: 500));
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}
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}
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}
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/// Get "retry" cost of each YoutubeExplode exception.
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int getExceptionCost(Exception e) {
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if (e is TransientFailureException ||
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e is FormatException ||
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e is SearchItemSectionException ||
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e is ClientException) {
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return 1;
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}
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if (e is RequestLimitExceededException) {
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return 2;
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}
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if (e is FatalFailureException) {
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return 3;
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}
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return 100;
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}
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