async private Task Using(Func <DbSet <TModel>, Task> func)
{
using (var context = _pool.Rent())
{
await func(context.Set <TModel>());
}
}
async private Task Using(Func <BlogDbContext, Task> func)
{
using (var ctx = _context.Rent())
{
await Task.Run(() => func(ctx));
}
}
private async Task Handler(ShowStart showMessage, string lockToken, CancellationToken ct)
{
if (!showMessage.IsValid())
{
_logger.LogError("Invalid ShowStart message received");
await _client.CompleteAsync(lockToken).ConfigureAwait(false);
return;
}
var show = new Show
{
Place = showMessage.Place,
Presenter = showMessage.Presenter,
Slug = showMessage.Slug,
HighestSlideShown = 0,
Title = showMessage.Title,
Time = showMessage.Time
};
using (var context = _contextPool.Rent())
{
if (!await context.Shows.AnyAsync(
s => s.Place == show.Place && s.Presenter == show.Presenter && s.Slug == show.Slug, ct))
{
context.Shows.Add(show);
await context.SaveChangesAsync(ct).ConfigureAwait(false);
}
}
await _client.CompleteAsync(lockToken).ConfigureAwait(false);
}
private static void PerformanceCacheDbTest(SelectTestDefinition[] testDefinitions, int testCount)
{
var pool = new DbContextPool <OrderContext>(OrderContextOptions.Create(true, null));
Db.OeEntitySetAdapterCollection entitySetAdapters = new OrderDbDataAdapter(false, false, null).EntitySetAdapters;
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
var stopWatch = new Stopwatch();
stopWatch.Start();
for (int i = 0; i < testCount; i++)
{
foreach (SelectTestDefinition testDefinition in testDefinitions)
{
OrderContext dbContext = pool.Rent();
testDefinition.ExecutorDb(entitySetAdapters, dbContext);
pool.Return(dbContext);
}
}
stopWatch.Stop();
Console.WriteLine("Entity Framework " + stopWatch.Elapsed);
}
public virtual async Task CreateAsync(User user, bool orUpdate = false, CancellationToken cancellationToken = default)
{
using var lease = DbContextPool.Rent();
var dbContext = lease.Subject;
var existingUser = (User?)null;
var supportTransactions = !dbContext.Database.IsInMemory();
await using var tx = supportTransactions
? await dbContext.Database.BeginTransactionAsync(cancellationToken)
: (IDbContextTransaction?)null;
var userId = user.Id;
if (orUpdate)
{
existingUser = await dbContext.Users.FindAsync(new [] { (object)userId }, cancellationToken);
if (existingUser != null)
{
dbContext.Users.Update(user);
}
}
if (existingUser == null)
{
dbContext.Users.Add(user);
}
await dbContext.SaveChangesAsync(cancellationToken).ConfigureAwait(false);
await(tx?.CommitAsync(cancellationToken) ?? Task.CompletedTask);
Invalidate(user, existingUser == null);
}
public virtual async Task UpdateAsync(User user, CancellationToken cancellationToken = default)
{
await using var dbContext = DbContextPool.Rent();
dbContext.Users.Update(user);
await dbContext.SaveChangesAsync(cancellationToken).ConfigureAwait(false);
Invalidate(user, false);
}
public virtual async Task <long> CountAsync(CancellationToken cancellationToken = default)
{
await Everything().ConfigureAwait(false);
await using var dbContext = DbContextPool.Rent();
var count = await dbContext.Users.LongCountAsync(cancellationToken).ConfigureAwait(false);
// _log.LogDebug($"Users.Count query: {count}");
return(count);
}
public async Task <string> ToOsuString(DbContextPool <SoraDbContext> ctxPool)
{
var returnString = string.Empty;
if (_bm == null)
{
Logger.Err("Failed to set Beatmap! Beatmap is null!");
return($"{(int) RankedStatus.NeedUpdate}|false\n");
}
var count = 0;
if (_ownScore != null)
{
var ctx = ctxPool.Rent();
try
{
returnString += $"{_ownScore?.ToOsuString(ctx)}\n";
}
finally
{
ctxPool.Return(ctx);
}
}
await foreach (var score in _scores)
{
count++;
var ctx = ctxPool.Rent();
try
{
returnString += $"{score.ToOsuString(ctx)}\n";
}
finally
{
ctxPool.Return(ctx);
}
}
return(ScoreboardHeader(count) + returnString);
}
public virtual async Task <User?> TryGetAsync(long userId, CancellationToken cancellationToken = default)
{
// Debug.WriteLine($"TryGetAsync {userId}");
await Everything().ConfigureAwait(false);
await using var dbContext = DbContextPool.Rent();
var user = await dbContext.Users
.FindAsync(new[] { (object)userId }, cancellationToken)
.ConfigureAwait(false);
return(user);
}
public override IEnumerable <DynamicPropertyInfo> GetStructuralProperties(String tableName)
{
SchemaContext schemaContext = _dbContextPool.Rent();
foreach (DbColumn column in schemaContext.GetColumns(tableName))
{
DatabaseGeneratedOption databaseGenerated;
if (column.IsIdentity.GetValueOrDefault())
{
databaseGenerated = DatabaseGeneratedOption.Identity;
}
else if (column.IsExpression.GetValueOrDefault())
{
databaseGenerated = DatabaseGeneratedOption.Computed;
}
else
{
databaseGenerated = DatabaseGeneratedOption.None;
}
yield return(new DynamicPropertyInfo(column.ColumnName, column.DataType, databaseGenerated));
}
_dbContextPool.Return(schemaContext);
}
public virtual async Task <bool> DeleteAsync(User user, CancellationToken cancellationToken = default)
{
Computed.GetCurrent().Should().BeNull();
await using var dbContext = DbContextPool.Rent();
dbContext.Users.Remove(user);
try {
await dbContext.SaveChangesAsync(cancellationToken).ConfigureAwait(false);
Invalidate(user);
return(true);
}
catch (DbUpdateConcurrencyException) {
return(false);
}
}
protected override async Task <ILookup <int, Tag> > LoadGroupedBatchAsync(
IReadOnlyList <int> keys, CancellationToken cancellationToken)
{
AppDbContext db = _dbPool.Rent();
try
{
List <CardTag> tags = await db.Cards
.Where(card => keys.Contains(card.Id))
.Include(card => card.CardTags)
.SelectMany(card => card.CardTags)
.Include(cardTag => cardTag.Tag)
.ToListAsync();
return(tags.Where(t => t.Tag is {}).ToLookup(t => t.CardId, t => t.Tag !));
}
protected override async Task <ILookup <int, Attendee> > LoadGroupedBatchAsync(
IReadOnlyList <int> keys,
CancellationToken cancellationToken)
{
ApplicationDbContext dbContext = _dbContextPool.Rent();
try
{
List <SessionAttendee> speakers = await dbContext.Sessions
.Where(session => keys.Contains(session.Id))
.Include(session => session.SessionAttendees)
.SelectMany(session => session.SessionAttendees)
.ToListAsync();
return(speakers.Where(t => t.Attendee is { }).ToLookup(t => t.SessionId, t => t.Attendee !));
}
protected override async Task <IReadOnlyDictionary <int, Speaker> > LoadBatchAsync(
IReadOnlyList <int> keys,
CancellationToken cancellationToken)
{
ApplicationDbContext dbContext = _dbContextPool.Rent();
try
{
return(await dbContext.Speakers
.Where(s => keys.Contains(s.Id))
.ToDictionaryAsync(t => t.Id, cancellationToken));
}
finally
{
_dbContextPool.Return(dbContext);
}
}
public override Object CreateDataContext()
{
T dbContext;
if (_dbContextPool == null)
{
dbContext = Db.FastActivator.CreateInstance <T>();
}
else
{
dbContext = _dbContextPool.Rent();
}
dbContext.ChangeTracker.AutoDetectChangesEnabled = false;
dbContext.ChangeTracker.QueryTrackingBehavior = QueryTrackingBehavior.NoTracking;
return(dbContext);
}
protected override async Task <ILookup <int, Session> > LoadGroupedBatchAsync(
IReadOnlyList <int> keys,
CancellationToken cancellationToken)
{
ApplicationDbContext dbContext = _dbContextPool.Rent();
try
{
var sessions = await dbContext.Tracks
.Where(track => keys.Contains(track.Id))
.Include(track => track.Sessions)
.SelectMany(track => track.Sessions)
.ToListAsync();
return(sessions.ToLookup(t => t.TrackId !.Value));
}
finally
{
_dbContextPool.Return(dbContext);
}
}
private async Task Handler(ShowSlide slide, string lockToken, CancellationToken ct)
{
if (!slide.IsValid())
{
_logger.LogError("Invalid ShowSlide message received");
await _queueClient.CompleteAsync(lockToken).ConfigureAwait(false);
}
try
{
using (var context = _contextPool.Rent())
{
await context.UpdateHighestShown(slide.Place, slide.Presenter, slide.Slug, slide.Number);
}
await _queueClient.CompleteAsync(lockToken).ConfigureAwait(false);
_redis.PublishSlideAvailable(slide.Place, slide.Presenter, slide.Slug, slide.Number);
}
catch (Exception ex)
{
_logger.LogError(ex, $"Error updating database: {ex.Message}");
}
}
protected override void ThreadWorker()
{
while (!CancellationToken.IsCancellationRequested)
{
var dbContext = _dbContextPool.Rent();
try
{
var beatmaps = dbContext.BeatmapSet
.Where(x => !x.Disabled)
.AsEnumerable()
.Where(x => x.LastChecked != null)
.Where(
x => (
(
(
x.RankedStatus == BeatmapSetOnlineStatus.None ||
x.RankedStatus == BeatmapSetOnlineStatus.Loved
) &&
(x.LastChecked.Value + TimeSpan.FromDays(90)).Subtract(DateTime.Now).TotalMilliseconds < 0
) ||
(
(
x.RankedStatus == BeatmapSetOnlineStatus.Pending ||
x.RankedStatus == BeatmapSetOnlineStatus.Qualified ||
x.RankedStatus == BeatmapSetOnlineStatus.WIP
) &&
(x.LastChecked.Value + TimeSpan.FromDays(30)).Subtract(DateTime.Now).TotalMilliseconds < 0
) ||
(
(
x.RankedStatus == BeatmapSetOnlineStatus.Graveyard ||
x.RankedStatus == BeatmapSetOnlineStatus.Ranked ||
x.RankedStatus == BeatmapSetOnlineStatus.Approved
) &&
(x.LastChecked.Value + TimeSpan.FromDays(365)).Subtract(DateTime.Now).TotalMilliseconds < 0
)
)
&& !x.Disabled
);
foreach (var beatmap in beatmaps)
{
if (Tasks.Count > 128)
{
Task.WaitAll(Tasks.ToArray(), CancellationToken); // wait for all tasks
Tasks.Clear(); // Remove all previous tasks.
}
_requestLimiter.Limit();
Tasks.Add(Crawl(beatmap.SetId));
}
}
catch (Exception e)
{
Logger.Error(e, "an Unknown error occured during HouseKeeping", LoggingTarget.Database);
SentrySdk.CaptureException(e);
} finally {
_dbContextPool.Return(dbContext);
}
Thread.Sleep(TimeSpan.FromHours(8)); // Update every 8 hours...
}
}