public async Task SubscribeToIterativeTagAsync(string iterativeTag, string userId, string token, string endpointArn, Platform platform)
{
string tag = iterativeTag;
if (string.IsNullOrEmpty(tag))
{
return;
}
DynamoTag pnTag = await tagTableOperator.GetTagAsync(iterativeTag);
if (pnTag != null && pnTag.TaggingTypeEnum != PNTagType.Iterative)
{
throw new OverrideExistingTagTypeException(pnTag.Tag, pnTag.TaggingTypeEnum.ToString());
}
if (pnTag == null)
{
pnTag = new DynamoTag();
pnTag.Tag = iterativeTag;
pnTag.TaggingTypeEnum = PNTagType.Iterative;
await tagTableOperator.AddTagAsync(pnTag);
}
Func <DateTime?> calculateTTL = (() =>
{
if (Provider.IterativeTagTimeToLive.HasValue)
{
return(DateTime.UtcNow.Add(Provider.IterativeTagTimeToLive.Value));
}
return(null);
});
DynamoIterativeTag entry = new DynamoIterativeTag
{
Tag = tag,
Subscriber = new Subscriber {
UserId = userId, Token = token
},
EndpointArn = endpointArn,
Platform = platform,
ttl = calculateTTL()
};
await iterativeTagTableOperator.AddSubscriberAsync(entry);
// await tagTableService.IncrementNumberOfSubscribers(pnTag.Tag, 1);
}
private async Task RemoveUnsuccessfulEndpoints(IterativeTagResponseTuple resultTuples)
{
// Parallel tasks are not implemented because of AWS-SDK SNS bug in parellel execution cause high memory usage
// List<Task> tasks = new List<Task>();
foreach (var responseTagTuple in resultTuples)
{
PublishToSNSResult result = responseTagTuple.Item1;
DynamoIterativeTag tag = responseTagTuple.Item2;
if (result.ErrorAlias == ErrorReason.SNSEndpointDisabled ||
result.ErrorAlias == ErrorReason.SNSEndpointNotFound)
{
await unRegisterService.UnRegisterSubscriberAsync(tag.Subscriber.UserId, tag.Subscriber.Token);
}
}
}