public SourceSearchResult(
ILogSourceSearchWorkerInternal worker,
ISearchResultInternal parent,
CancellationToken cancellation,
Progress.IProgressAggregator progress,
Telemetry.ITelemetryCollector telemetryCollector
)
{
this.searchWorker = worker;
this.parent = parent;
this.telemetryCollector = telemetryCollector;
this.messages = new MessagesContainers.ListBasedCollection();
this.progressSink = progress.CreateProgressSink();
this.workerTask = Worker(cancellation, progressSink);
AwaitWorker();
}
MessagesContainers.ListBasedCollection ISourceSearchResultInternal.CreateMessagesSnapshot()
{
var status = ((ISourceSearchResultInternal)this).Status;
if (status != SearchResultStatus.Active)
{
// if search state is terminal,
// a reference to finalized immutable messages collection can be returned.
return(lastMessagesSnapshot = messages);
}
// otherwise make an immutable snapshot
// todo: consider making non-copying snapshot.
// that requires a container that supports 3 operations
// each to be invoked from one of 2 threads.
// operations are: push_back(T), count(), at(int).
// snapshot user thread would call count() to capture size, then at() to iterate.
// search worker would call push_back().
lock (messagesLock)
{
return(lastMessagesSnapshot = new MessagesContainers.ListBasedCollection(messages.Items));
}
}
void IDisposable.Dispose()
{
messages.Clear();
lastMessagesSnapshot = null;
}
public CombinedSourceSearchResult(ILogSource logSource)
{
this.logSource = logSource;
this.messages = new MessagesContainers.ListBasedCollection();
this.sequentialMessagesPositions = new List <long>();
}