private async Task <long> GetSearchTimeLine_Backfill()
{
int backofftimer = 30;
long smallestid = 0;
long largestid = 0;
int backfillQuota = 50;
do
{
//TODO: need to unhardcode SearchResultType just for backfills
var searchtl = await TwitterSession.SearchFor(searchText : _currentSearchText, searchResponseType : SearchResultType.Recent, count : _pagingSize, maxId : smallestid);
if (searchtl.OK)
{
smallestid = long.MaxValue;
if (searchtl.Tweets.Count() < backfillQuota)
{
backfillQuota = searchtl.Tweets.Count();
}
foreach (var tweet in searchtl.Tweets)
{
if (tweet.Id < smallestid)
{
smallestid = tweet.Id;
}
if (tweet.Id > largestid)
{
largestid = tweet.Id;
}
_searchtimeline.OnNext(tweet);
backfillQuota--;
}
}
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)
{
backofftimer = backofftimer * 2;
}
}
} while (backfillQuota > 0);
return(largestid);
}
private async Task <long> GetSearchTimeLine_Failover(long sinceid)
{
var largestseenid = sinceid;
var searchtl = await TwitterSession.SearchFor(searchText : _currentSearchText, searchResponseType : SearchResultType.Recent, count : _pagingSize, sinceId : sinceid);
if (!searchtl.OK)
{
return(largestseenid);
}
foreach (var tweet in searchtl.Tweets.Where(tweet => tweet.Id > sinceid))
{
if (tweet.Id > sinceid)
{
largestseenid = tweet.Id;
}
_searchtimeline.OnNext(tweet);
}
return(largestseenid);
}