private static async Task <QueryContext> CreateAsyncCore(IDbConnectionFactory connectionFactory, QueryLoggingContext loggingContext, CancellationToken cancellationToken)
{
if (SemaphoreLookup.TryGetValue(connectionFactory, out var semaphore))
{
await semaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
try
{
loggingContext.Start();
return(new QueryContext(semaphore, loggingContext));
}
finally
{
semaphore.Release();
}
}
else
{
loggingContext.Start();
return(new QueryContext(loggingContext));
}
}
private QueryContext(AsyncSemaphore semaphore, QueryLoggingContext loggingContext)
{
_semaphore = semaphore ?? throw new ArgumentNullException(nameof(semaphore));
_loggingContext = loggingContext ?? throw new ArgumentNullException(nameof(loggingContext));
}
public static Task <QueryContext> CreateAsync(IDbConnectionFactory connectionFactory, QueryLoggingContext loggingContext, CancellationToken cancellationToken = default)
{
if (connectionFactory == null)
{
throw new ArgumentNullException(nameof(connectionFactory));
}
if (loggingContext == null)
{
throw new ArgumentNullException(nameof(loggingContext));
}
return(CreateAsyncCore(connectionFactory, loggingContext, cancellationToken));
}
private QueryContext(QueryLoggingContext loggingContext)
{
_loggingContext = loggingContext ?? throw new ArgumentNullException(nameof(loggingContext));
}