public void Calibrate()
{
if (_rules.Any(r => r.CanBeCalibrated))
{
var request = QuotaRequest.Calibrate();
_reserveQueue.Add(request);
}
}
private Task <BoolResult> SendPurgeRequest(OperationContext context, string reason)
{
return(context.PerformOperationAsync(
Tracer,
() =>
{
var emptyRequest = QuotaRequest.Purge();
_reserveQueue.Add(emptyRequest);
return emptyRequest.CompletionAsync();
},
traceErrorsOnly: true));
}
private Task <BoolResult> SendPurgeRequest(OperationContext context, string reason)
{
return(context.PerformOperationAsync(
_tracer,
() =>
{
var emptyRequest = QuotaRequest.Purge();
_reserveQueue.Add(emptyRequest);
return emptyRequest.CompletionAsync();
},
extraStartMessage: $"Requesting purge due to '{reason}'."));
}
private Task <BoolResult> SendSyncRequest(OperationContext context, bool purge)
{
if (purge)
{
return(SendPurgeRequest(context, "Sync"));
}
return(context.PerformOperationAsync(
Tracer,
() =>
{
var emptyRequest = QuotaRequest.Synchronize();
_reserveQueue.Add(emptyRequest);
return emptyRequest.CompletionAsync();
}));
}
public async Task <ReserveTransaction> ReserveAsync(long contentSize)
{
Contract.Assert(contentSize >= 0);
ShutdownStartedCancellationToken.ThrowIfCancellationRequested();
var reserveRequest = QuotaRequest.Reserve(contentSize);
// To avoid potential race condition need to increase size first and only after that to add the request into the queue.
IncreaseSize(ref _requestedSize, reserveRequest.ReserveSize);
_reserveQueue.Add(reserveRequest);
BoolResult result = await reserveRequest.CompletionAsync();
if (!result)
{
throw new CacheException($"Failed to reserve space for content size=[{contentSize}], result=[{result}]");
}
return(new ReserveTransaction(reserveRequest, OnReservationCommitted));
}