private OnGoingStudy StartStudy(TwitterStudy study)
{
var reportData = new TwitterSpyStudyData(study);
Trace.WriteLine(string.Format("Study {0} started", study.Id));
foreach (var topic in study.Topics)
{
_stream.AddTrack(topic, reportData.ProcessTweet);
}
var onGoingStudy = new OnGoingStudy {
Data = reportData
};
// the object is stored so that the timer isn't garbage collected
var timer = new Timer(o =>
{
var data = (TwitterSpyStudyData)o;
//
// Remove the study from the ongoing list
//
lock (_onGoingStudies)
{
_onGoingStudies.Remove(onGoingStudy);
}
CheckIfStreamNeedsToBeStopped();
//
// Remove topics
//
foreach (var topic in data.Study.Topics)
{
_stream.RemoveTrack(topic);
}
var report = data.GetReport();
//
// send report to the client via queue
//
_reportQueue.AddMessage(new CloudQueueMessage(JsonConvert.SerializeObject(report)));
},
reportData,
study.Duration,
TimeSpan.FromTicks(-1));
onGoingStudy.Timer = timer;
return(onGoingStudy);
}
void HandleTracks(bool add, params string[] tracks)
{
StopTweetStream();
foreach (var track in tracks)
{
if (add)
{
_filteredStream.AddTrack(track);
}
else
{
_filteredStream.RemoveTrack(track);
}
}
}
public void RemoveTrack(string hashtag)
{
if (filteredStream.TracksCount > 0)
{
filteredStream.StopStream();
Dictionary <string, Action <ITweet> > tracks = filteredStream.Tracks;
ReCreateFilteredStream();
tracks.Keys.ForEach(s => filteredStream.AddTrack(s));
}
filteredStream.RemoveTrack(hashtag);
if (filteredStream.TracksCount > 0)
{
filteredStream.StartStreamMatchingAnyConditionAsync();
}
Debug.WriteLine("REMOVED HASHTAG - " + hashtag);
}
