public void Index_Exists()
{
using (var luceneDir = new RandomIdRAMDirectory())
using (var indexer = new TestIndex(luceneDir, new StandardAnalyzer(Version.LUCENE_30)))
{
indexer.EnsureIndex(true);
Assert.IsTrue(indexer.IndexExists());
}
}
public void Can_Overwrite_Index_During_Indexing_Operation()
{
const int ThreadCount = 1000;
using (var d = new RandomIdRAMDirectory())
using (var writer = new IndexWriter(d, new CultureInvariantStandardAnalyzer(Version.LUCENE_30), IndexWriter.MaxFieldLength.LIMITED))
using (var customIndexer = new TestIndex(writer))
using (var customSearcher = (LuceneSearcher)customIndexer.GetSearcher())
{
var waitHandle = new ManualResetEvent(false);
var opCompleteCount = 0;
void OperationComplete(object sender, IndexOperationEventArgs e)
{
Interlocked.Increment(ref opCompleteCount);
Console.WriteLine($"OperationComplete: {opCompleteCount}");
if (opCompleteCount == ThreadCount)
{
//signal that we are done
waitHandle.Set();
}
}
//add the handler for optimized since we know it will be optimized last based on the commit count
customIndexer.IndexOperationComplete += OperationComplete;
//remove the normal indexing error handler
customIndexer.IndexingError -= IndexInitializer.IndexingError;
//run in async mode
customIndexer.RunAsync = true;
//get a node from the data repo
var node = _contentService.GetPublishedContentByXPath("//*[string-length(@id)>0 and number(@id)>0]")
.Root
.Elements()
.First();
//get the id for th node we're re-indexing.
var id = (int)node.Attribute("id");
//spawn a bunch of threads to perform some reading
var tasks = new List <Task>();
//reindex the same node a bunch of times - then while this is running we'll overwrite below
for (var i = 0; i < ThreadCount; i++)
{
var indexer = customIndexer;
tasks.Add(Task.Factory.StartNew(() =>
{
//get next id and put it to the back of the list
int docId = i;
var cloned = new XElement(node);
Debug.WriteLine("Indexing {0}", docId);
indexer.IndexItem(cloned.ConvertToValueSet(IndexTypes.Content));
}, TaskCreationOptions.LongRunning));
}
Thread.Sleep(100);
//overwrite!
customIndexer.EnsureIndex(true);
try
{
Task.WaitAll(tasks.ToArray());
}
catch (AggregateException e)
{
var sb = new StringBuilder();
sb.Append(e.Message + ": ");
foreach (var v in e.InnerExceptions)
{
sb.Append(v.Message + "; ");
}
Assert.Fail(sb.ToString());
}
//reset the async mode and remove event handler
customIndexer.IndexingError += IndexInitializer.IndexingError;
customIndexer.RunAsync = false;
//wait until we are done
waitHandle.WaitOne(TimeSpan.FromMinutes(2));
writer.WaitForMerges();
//ensure no data since it's a new index
var results = customSearcher.CreateQuery().Field("nodeName", (IExamineValue) new ExamineValue(Examineness.Explicit, "Home")).Execute();
//the total times that OperationComplete event should be fired is 1000
Assert.AreEqual(1000, opCompleteCount);
//should be less than the total inserted because we overwrote it in the middle of processing
Debug.WriteLine("TOTAL RESULTS: " + results.TotalItemCount);
Assert.Less(results.Count(), 1000);
}
}
