internal static void HealthCheck()
{
if (IsWorking())
{
SnTrace.Index.Write("IAQ: Health check triggered but ignored.");
return;
}
SnTrace.Index.Write("IAQ: Health check triggered.");
var state = TerminationHistory.GetCurrentState();
var gapsLength = state.Gaps.Length;
if (gapsLength > 0)
{
SnTrace.IndexQueue.Write("IAQ: Health checker is processing {0} gap{1}.", gapsLength, gapsLength > 1 ? "s" : "");
var notLoadedIds = state.Gaps.ToList();
foreach (var indexingActivity in new IndexingActivityLoader(state.Gaps, false))
{
var activity = (IndexingActivityBase)indexingActivity;
WaitIfOverloaded();
ExecuteActivity(activity);
notLoadedIds.Remove(activity.Id);
}
if (notLoadedIds.Count > 0)
{
TerminationHistory.RemoveGaps(notLoadedIds);
SnTrace.IndexQueue.Write("IAQ: Health checker ignores the following activity ids after processing the gaps: {0}", notLoadedIds);
}
}
var lastId = TerminationHistory.GetLastTerminatedId();
var lastDbId = IndexManager.GetLastStoredIndexingActivityId();
if (lastId < lastDbId)
{
SnTrace.IndexQueue.Write("IAQ: Health checker is processing activities from {0} to {1}", (lastId + 1), lastDbId);
foreach (var indexingActivity in new IndexingActivityLoader(lastId + 1, lastDbId, false))
{
var activity = (IndexingActivityBase)indexingActivity;
WaitIfOverloaded();
ExecuteActivity(activity);
}
}
}
public static void Startup(System.IO.TextWriter consoleOut)
{
// initialize from index
var cud = IndexManager.IndexingEngine.ReadActivityStatusFromIndexAsync(CancellationToken.None).GetAwaiter().GetResult();
var gapsLength = cud.Gaps?.Length ?? 0;
var lastDatabaseId = IndexManager.GetLastStoredIndexingActivityId();
using (var op = SnTrace.Index.StartOperation("IAQ: InitializeFromIndex. LastIndexedActivityId: {0}, LastDatabaseId: {1}, TotalUnprocessed: {2}"
, cud.LastActivityId, lastDatabaseId, lastDatabaseId - cud.LastActivityId + gapsLength))
{
Startup(lastDatabaseId, cud.LastActivityId, cud.Gaps, consoleOut);
op.Successful = true;
}
IndexHealthMonitor.Start(consoleOut);
}