private bool IntegrateIntoLiveDatabase(IServerLeafSubGrid sourceSubGrid,
IServerLeafSubGrid targetSubGrid,
ISubGridSegmentIterator segmentIterator,
Action <int, int> subGridChangeNotifier)
{
// Note the fact that this sub grid will be changed and become dirty as a result
// of the cell pass integration
targetSubGrid.SetDirty();
targetSubGrid.Integrate(sourceSubGrid, segmentIterator, false);
subGridChangeNotifier?.Invoke(targetSubGrid.OriginX, targetSubGrid.OriginY);
// Save the integrated state of the sub grid segments to allow Ignite to store & socialize the update
// within the cluster.
// Failure to save a piece of data aborts the entire integration
var result = false;
if (_target.SaveLeafSubGrid(targetSubGrid, _storageProxySubGrids, _storageProxySubGridSegments, InvalidatedSpatialStreams))
{
// Successfully saving the sub grid directory information is the point at which this sub grid may be recognized to exist
// in the site model. Note this by including it within the SiteModel existence map
_siteModel.ExistenceMap.SetCell(targetSubGrid.OriginX >> SubGridTreeConsts.SubGridIndexBitsPerLevel,
targetSubGrid.OriginY >> SubGridTreeConsts.SubGridIndexBitsPerLevel,
true);
result = true;
}
else
{
_log.LogError($"Sub grid leaf save failed for {targetSubGrid}, existence map not modified.");
}
// Finally, mark the source sub grid as not being dirty. We need to do this to allow
// the sub grid to permit its destruction as all changes have been merged into the target.
if (result)
{
sourceSubGrid.AllChangesMigrated();
}
return(result);
}