private async Task <long> GetMentions_Backfill()
{
long smallestid = 0;
long largestid = 0;
int backfillQuota = 50;
int backofftimer = 30;
do
{
var mentionsofme = await UserSession.GetMentions(count : _pagingSize, maxId : smallestid);
if (mentionsofme.OK)
{
smallestid = long.MaxValue;
if (mentionsofme.Count < backfillQuota)
{
backfillQuota = mentionsofme.Count;
}
foreach (var tweet in mentionsofme)
{
_mentions.OnNext(tweet);
if (tweet.Id < smallestid)
{
smallestid = tweet.Id;
}
if (tweet.Id > largestid)
{
largestid = tweet.Id;
}
backfillQuota--;
}
await Task.Delay(_multiFetchBackoffTimer);
}
else
{
// The Backoff will trigger 7 times before just giving up
// once at 30s, 60s, 1m, 2m, 4m, 8m and then 16m
// note that the last call into this will be 1m above the 15 "rate limit reset" window
await Task.Delay(TimeSpan.FromSeconds(backofftimer));
if (backofftimer > _maxbackoff)
{
break;
}
backofftimer = backofftimer * 2;
}
} while (backfillQuota > 0);
return(largestid);
}
private async Task <long> GetMentions_Failover(long sinceid)
{
var largestseenid = sinceid;
var mentionsofme = await UserSession.GetMentions(count : _sinceIdPagingSize, sinceId : sinceid);
if (!mentionsofme.OK)
{
return(largestseenid);
}
foreach (var tweet in mentionsofme.Where(tweet => tweet.Id > sinceid))
{
largestseenid = tweet.Id;
_mentions.OnNext(tweet);
}
return(largestseenid);
}