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);
}
private async Task LoadEmployeeData()
{
StartOperation("Getting employee studies");
Studies = new TwitterStudy[0];
try
{
Studies = await _service.GetPendingStudiesAsync(EmployeeId);
}
catch (Exception e)
{
}
StopOperation();
}
public TwitterSpyStudyData(TwitterStudy study)
{
Study = study;
Histogram = new Dictionary <string, int>();
Authors = new HashSet <string>();
}
