ios - iOS AWS S3 Upload如何重试失败或失败的任务？

Question

我正在利用iOS AWS开发工具包的批处理上传[AWSTask taskForCompletionOfAllTasks:tasks] tasks数组是AWSTask *task = [self.transferManager upload:uploadRequest];对象的数组。上传完成后，我可以枚举数组以检查所有任务是否成功。但是，我似乎无法弄清楚如何重试失败或错误的任务。如果我将失败的任务数组传递给taskForCompletionOfAllTasks，它对那些任务没有任何作用？

iOS AWS docs它没有提及有关重试失败或错误任务的任何内容。是的，有AWSServiceConfiguration.maxRetryCount，但是在超过该数量后无法解决重试错误或失败的任务的问题。而且iOS AWS Examples对此也没有显示任何内容。

- (void)performS3UploadWithRequest:(NSArray *)tasks withRetryCount:(int)retryCount
{

    if (retryCount == 0) {
        alert = [[UIAlertView alloc] initWithTitle:@"Failed to Upload Content"
                                           message:@"It appears we are having issues uploading your card information."
                                          delegate:self cancelButtonTitle:nil
                                 otherButtonTitles:@"Retry Upload", @"Retry Later", @"Cancel Order", nil];
        [alert show];
    } else {
        [[AWSTask taskForCompletionOfAllTasks:tasks] continueWithExecutor:[AWSExecutor mainThreadExecutor] withBlock:^id(AWSTask *task) {
            NSMutableArray *faultedTasks = [NSMutableArray new];
            for (AWSTask *finishedTask in tasks) {
                if (finishedTask.cancelled || finishedTask.faulted) {
                    [faultedTasks addObject:finishedTask];
                }
            }

            if (faultedTasks.count > 0) {
                [self performS3UploadWithRequest:faultedTasks withRetryCount:retryCount-1];
            } else {
                [[NSNotificationCenter defaultCenter] postNotificationName:kWHNotificationUploadDone object:self userInfo:nil];
            }
            return nil;
        }];
    }
}

Answer 1

您需要重新创建任务对象，然后再次重新启动任务。例如再次调用- upload:。