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Reduce the amount of db calls during the post scan event

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This commit is contained in:
Bond-009 2019-02-13 22:10:37 +01:00
parent a2dd2ddd55
commit bca569da42
1 changed files with 18 additions and 30 deletions
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48
Emby.Server.Implementations/Channels/ChannelPostScanTask.cs
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@ -35,64 +35,52 @@ namespace Emby.Server.Implementations.Channels
public static string GetUserDistinctValue(User user)
{
var channels = user.Policy.EnabledChannels
.OrderBy(i => i)
.ToList();
.OrderBy(i => i);
return string.Join("|", channels.ToArray());
return string.Join("|", channels);
}
private void CleanDatabase(CancellationToken cancellationToken)
{
var installedChannelIds = ((ChannelManager)_channelManager).GetInstalledChannelIds();
var databaseIds = _libraryManager.GetItemIds(new InternalItemsQuery
var databaseIds = _libraryManager.GetItemList(new InternalItemsQuery
{
IncludeItemTypes = new[] { typeof(Channel).Name }
IncludeItemTypes = new[] { typeof(Channel).Name },
ExcludeItemIds = installedChannelIds.ToArray()
});
var invalidIds = databaseIds
.Except(installedChannelIds)
.ToList();
foreach (var id in invalidIds)
foreach (var channel in databaseIds.Cast<Channel>())
{
cancellationToken.ThrowIfCancellationRequested();
CleanChannel(id, cancellationToken);
CleanChannel(channel, cancellationToken);
}
}
private void CleanChannel(Guid id, CancellationToken cancellationToken)
private void CleanChannel(Channel channel, CancellationToken cancellationToken)
{
_logger.LogInformation("Cleaning channel {0} from database", id);
_logger.LogInformation("Cleaning channel {0} from database", channel.Id);
// Delete all channel items
var allIds = _libraryManager.GetItemIds(new InternalItemsQuery
var items = _libraryManager.GetItemList(new InternalItemsQuery
{
ChannelIds = new[] { id }
ChannelIds = new[] { channel.Id }
});
foreach (var deleteId in allIds)
foreach (var item in items)
{
cancellationToken.ThrowIfCancellationRequested();
DeleteItem(deleteId);
_libraryManager.DeleteItem(item, new DeleteOptions
{
DeleteFileLocation = false
}, false);
}
// Finally, delete the channel itself
DeleteItem(id);
}
private void DeleteItem(Guid id)
{
var item = _libraryManager.GetItemById(id);
if (item == null)
{
return;
}
_libraryManager.DeleteItem(item, new DeleteOptions
_libraryManager.DeleteItem(channel, new DeleteOptions
{
DeleteFileLocation = false