private async Task <int> FillCabinetDrawerAsync(CosmosCabinetDrawer drawer, IEnumerable <DataAvailableNotification> notifications)
{
var count = 0;
var tasks = notifications.Select(async x =>
{
if (await CheckIdempotencyAsync(x).ConfigureAwait(false))
{
return;
}
var cosmosDataAvailable = CosmosDataAvailableMapper.Map(x, drawer.Id);
await _repositoryContainer
.Cabinet
.CreateItemAsync(cosmosDataAvailable)
.ConfigureAwait(false);
Interlocked.Increment(ref count);
});
await Task.WhenAll(tasks).ConfigureAwait(false);
return(count);
}
public async Task SaveAsync(CabinetKey key, IReadOnlyList <DataAvailableNotification> notifications)
{
ArgumentNullException.ThrowIfNull(key, nameof(key));
ArgumentNullException.ThrowIfNull(notifications, nameof(notifications));
var nextDrawer = await FindExistingDrawerWithFreeSpaceAsync(key).ConfigureAwait(false);
var nextDrawerItemCount = nextDrawer != null
? await CountItemsInDrawerAsync(nextDrawer).ConfigureAwait(false)
: 0;
for (var i = 0; i < notifications.Count; i++)
{
var notification = notifications[i];
Debug.Assert(key == new CabinetKey(notification), "All notifications should belong to the provided key.");
if (await CheckIdempotencyAsync(notification).ConfigureAwait(false))
{
continue;
}
if (nextDrawer is null)
{
nextDrawer = CreateEmptyDrawer(notification);
nextDrawerItemCount = 0;
await _repositoryContainer
.Cabinet
.CreateItemAsync(nextDrawer)
.ConfigureAwait(false);
}
if (nextDrawer.Position == nextDrawerItemCount)
{
var catalogEntry = CreateCatalogEntry(notification);
await _repositoryContainer
.Catalog
.CreateItemAsync(catalogEntry)
.ConfigureAwait(false);
}
var cosmosDataAvailable = CosmosDataAvailableMapper.Map(notification, nextDrawer.Id);
await _repositoryContainer
.Cabinet
.CreateItemAsync(cosmosDataAvailable)
.ConfigureAwait(false);
var itemsLeft = notifications.Count - (i + 1);
var spaceLeft = MaximumCabinetDrawerItemCount - (nextDrawerItemCount + 1);
var itemsToFill = notifications
.Skip(i + 1)
.Take(Math.Min(itemsLeft, spaceLeft));
var itemsInserted = await FillCabinetDrawerAsync(nextDrawer, itemsToFill).ConfigureAwait(false);
i += itemsInserted;
nextDrawerItemCount += itemsInserted;
nextDrawerItemCount++;
Debug.Assert(nextDrawerItemCount <= MaximumCabinetDrawerItemCount, "Too many items were inserted into a single drawer.");
if (nextDrawerItemCount == MaximumCabinetDrawerItemCount)
{
nextDrawer = null;
}
}
}