internal SearchManager(
ILogSourcesManager sources,
ISynchronizationContext modelSynchronization,
IHeartBeatTimer heartBeat,
ISearchObjectsFactory factory,
IChangeNotification changeNotification
)
{
this.sources = sources;
this.factory = factory;
this.changeNotification = changeNotification;
this.combinedSearchResult = factory.CreateCombinedSearchResult(this);
this.combinedResultUpdateInvoker = new AsyncInvokeHelper(
modelSynchronization, UpdateCombinedResult);
this.combinedResultNeedsLazyUpdateFlag = new LazyUpdateFlag();
sources.OnLogSourceAdded += (s, e) =>
{
results.ForEach(r => r.FireChangeEventIfContainsSourceResults(s as ILogSource));
};
sources.OnLogSourceRemoved += (s, e) =>
{
results.ForEach(r => r.FireChangeEventIfContainsSourceResults(s as ILogSource));
// Search result is fully disposed if it contains messages
// only from disposed log sources.
// Fully disposed results are automatically dropped.
var toBeDropped = results.Where(
r => r.Results.All(sr => sr.Source.IsDisposed)).ToHashSet();
var nrOfFullyDisposedResults = DisposeResults(toBeDropped);
if (nrOfFullyDisposedResults > 0 && SearchResultsChanged != null)
{
SearchResultsChanged(this, EventArgs.Empty);
}
if (nrOfFullyDisposedResults > 0)
{
changeNotification.Post();
combinedResultNeedsLazyUpdateFlag.Invalidate();
}
};
heartBeat.OnTimer += (s, e) =>
{
if (e.IsNormalUpdate && combinedResultNeedsLazyUpdateFlag.Validate())
{
combinedResultUpdateInvoker.Invoke();
}
};
}