private void StartPurging()
{
var emptyRequest = new Request <QuotaKeeperRequest, string>(QuotaKeeperRequest.Reserve(0));
_reserveQueue.Add(emptyRequest);
_taskTracker.Add(() => emptyRequest.WaitForCompleteAsync());
}
/// <inheritdoc />
public override void Calibrate()
{
if (_rules.Any(r => r.CanBeCalibrated))
{
_reserveQueue.Add(new Request <QuotaKeeperRequest, string>(QuotaKeeperRequest.Calibrate()));
}
}
/// <inheritdoc />
public override async Task <ReserveTransaction> ReserveAsync(long contentSize)
{
var reserveRequest = new Request <QuotaKeeperRequest, string>(QuotaKeeperRequest.Reserve(contentSize));
_reserveQueue.Add(reserveRequest);
string result = await reserveRequest.WaitForCompleteAsync();
if (result != null)
{
throw new CacheException($"Failed to reserve space for content size=[{contentSize}], result=[{result}]");
}
return(new ReserveTransaction(contentSize, Evicted));
}
/// <inheritdoc />
public override async Task SyncAsync(Context context, bool purge)
{
// Ensure there are no pending requests.
var request = new Request <QuotaKeeperRequest, string>(purge ? QuotaKeeperRequest.Reserve(0) :QuotaKeeperRequest.Synchronize());
_reserveQueue.Add(request);
await request.WaitForCompleteAsync();
var purgeTask = _purgeTask;
if (purgeTask != null)
{
// Can ignore the result because purgeTask should never fail.
(await purgeTask).ThrowIfFailure();
}
}