public bool TryReplaceIndexes(string oldIndexName, string replacementIndexName)
{
bool lockTaken = false;
try
{
Monitor.TryEnter(_locker, 16, ref lockTaken);
if (lockTaken == false)
{
return(false);
}
if (_indexes.TryGetByName(replacementIndexName, out Index newIndex) == false)
{
return(true);
}
if (_indexes.TryGetByName(oldIndexName, out Index oldIndex))
{
oldIndexName = oldIndex.Name;
if (oldIndex.Type.IsStatic() && newIndex.Type.IsStatic())
{
var oldIndexDefinition = oldIndex.GetIndexDefinition();
var newIndexDefinition = newIndex.Definition.GetOrCreateIndexDefinitionInternal();
if (newIndex.Definition.LockMode == IndexLockMode.Unlock && newIndexDefinition.LockMode.HasValue == false && oldIndexDefinition.LockMode.HasValue)
{
newIndex.SetLock(oldIndexDefinition.LockMode.Value);
}
if (newIndex.Definition.Priority == IndexPriority.Normal && newIndexDefinition.Priority.HasValue == false && oldIndexDefinition.Priority.HasValue)
{
newIndex.SetPriority(oldIndexDefinition.Priority.Value);
}
}
}
_indexes.ReplaceIndex(oldIndexName, oldIndex, newIndex);
newIndex.Rename(oldIndexName);
newIndex.ResetIsSideBySideAfterReplacement();
if (oldIndex != null)
{
while (_documentDatabase.DatabaseShutdown.IsCancellationRequested == false)
{
try
{
using (oldIndex.DrainRunningQueries())
DeleteIndexInternal(oldIndex);
break;
}
catch (TimeoutException)
{
}
}
}
if (newIndex.Configuration.RunInMemory == false)
{
while (_documentDatabase.DatabaseShutdown.IsCancellationRequested == false)
{
try
{
using (newIndex.DrainRunningQueries())
using (newIndex.StorageOperation())
{
var oldIndexDirectoryName = IndexDefinitionBase.GetIndexNameSafeForFileSystem(oldIndexName);
var replacementIndexDirectoryName = IndexDefinitionBase.GetIndexNameSafeForFileSystem(replacementIndexName);
IOExtensions.MoveDirectory(newIndex.Configuration.StoragePath.Combine(replacementIndexDirectoryName).FullPath,
newIndex.Configuration.StoragePath.Combine(oldIndexDirectoryName).FullPath);
if (newIndex.Configuration.TempPath != null)
{
IOExtensions.MoveDirectory(newIndex.Configuration.TempPath.Combine(replacementIndexDirectoryName).FullPath,
newIndex.Configuration.TempPath.Combine(oldIndexDirectoryName).FullPath);
}
}
break;
}
catch (TimeoutException)
{
}
}
}
_documentDatabase.Changes.RaiseNotifications(
new IndexChange
{
Name = oldIndexName,
Type = IndexChangeTypes.SideBySideReplace
});
return(true);
}
finally
{
if (lockTaken)
{
Monitor.Exit(_locker);
}
}
}
private void OpenIndexesFromRecord(PathSetting path, DatabaseRecord record)
{
if (_logger.IsInfoEnabled)
{
_logger.Info("Starting to load indexes from record");
}
List <Exception> exceptions = null;
if (_documentDatabase.Configuration.Core.ThrowIfAnyIndexCannotBeOpened)
{
exceptions = new List <Exception>();
}
// delete all unrecognized index directories
//foreach (var indexDirectory in new DirectoryInfo(path.FullPath).GetDirectories().Concat(indexesCustomPaths.Values.SelectMany(x => new DirectoryInfo(x).GetDirectories())))
//{
// if (record.Indexes.ContainsKey(indexDirectory.Name) == false)
// {
// IOExtensions.DeleteDirectory(indexDirectory.FullName);
// continue;
// }
// // delete all redundant index instances
// var indexInstances = indexDirectory.GetDirectories();
// if (indexInstances.Length > 2)
// {
// var orderedIndexes = indexInstances.OrderByDescending(x =>
// int.Parse(x.Name.Substring(x.Name.LastIndexOf("\\") +1)));
// foreach (var indexToRemove in orderedIndexes.Skip(2))
// {
// Directory.Delete(indexToRemove.FullName);
// }
// }
//}
foreach (var kvp in record.Indexes)
{
if (_documentDatabase.DatabaseShutdown.IsCancellationRequested)
{
return;
}
var name = kvp.Key;
var definition = kvp.Value;
var safeName = IndexDefinitionBase.GetIndexNameSafeForFileSystem(definition.Name);
var indexPath = path.Combine(safeName).FullPath;
if (Directory.Exists(indexPath))
{
OpenIndex(path, indexPath, exceptions, name);
}
}
foreach (var kvp in record.AutoIndexes)
{
if (_documentDatabase.DatabaseShutdown.IsCancellationRequested)
{
return;
}
var name = kvp.Key;
var definition = kvp.Value;
var safeName = IndexDefinitionBase.GetIndexNameSafeForFileSystem(definition.Name);
var indexPath = path.Combine(safeName).FullPath;
if (Directory.Exists(indexPath))
{
OpenIndex(path, indexPath, exceptions, name);
}
}
if (exceptions != null && exceptions.Count > 0)
{
throw new AggregateException("Could not load some of the indexes", exceptions);
}
}
public abstract IndexDefinitionCompareDifferences Compare(IndexDefinitionBase indexDefinition);