LoadArtifactsBgOperation StartLoadArtifacts()
{
var op = new LoadArtifactsBgOperation { Cts = new CancellationTokenSource() };
op.Task = Task.Factory.StartNew(() => {
try
{
return LoadArtifacts(op.Cts.Token);
}
finally
{
op.Cts.Dispose();
op.Cts = null;
}
}, op.Cts.Token);
simplifiedBackgroundOperation.Track(op.Task, "Refreshing...");
return op;
}
LoadArtifactsBgOperation StartOrPickupLoadArtifacts()
{
// pickup progressed background operation
if (_firstArtifactsLoad != null)
{
var op = _firstArtifactsLoad;
_firstArtifactsLoad = null;
if (!op.Task.IsCompleted)
return op;
}
return StartLoadArtifacts();
}
void RallyTool_Load(object sender, EventArgs e)
{
Text = Text + " (ver. " + NewVersionControl.ProductVersion + ")";
if(string.IsNullOrWhiteSpace(Settings.Default.RallyUser))
{
if (new RallySettings().ShowDialog() == DialogResult.OK)
{
// force refresh query
Settings.Default.RallyQuery = null;
EnsureQueryValid();
}
}
// start loading artifacts on every form opening.
// sometitme it will be in bg, sometime in fg
_firstArtifactsLoad = StartLoadArtifacts();
var lastUpdate = DateTimeOffset.MinValue;
var artifacts = LoadCachedArtifacts(ref lastUpdate);
if (artifacts != null)
{
SetArtifactsList(artifacts, lastUpdate);
// and force update list if fingerprints does not match
_firstArtifactsLoad
.Task
.ContinueWith(t => {
var freshArtifacts = t.Result;
if(CalcFingerprint(_filteredIssues.Select(i => i.WorkItem)) != CalcFingerprint(freshArtifacts))
{
SetArtifactsList(freshArtifacts, DateTimeOffset.Now);
}
},
_firstArtifactsLoad.Cts.Token, TaskContinuationOptions.OnlyOnRanToCompletion, TaskScheduler.FromCurrentSynchronizationContext()
)
;
}
else
{
// force open 'wait for refresh' dialog
RefreshArtifactsList();
}
}
