public override async Task <Empty> OnTopicEvent(CloudEventEnvelope request, ServerCallContext context)
{
if (request.Topic.Equals("Storage.Reduce"))
{
StorageReduceData storageReduceData = StorageReduceData.Parser.ParseJson(request.Data.Value.ToStringUtf8());
Console.WriteLine("ProductID:" + storageReduceData.ProductID);
Console.WriteLine("Amount:" + storageReduceData.Amount);
await HandlerStorageReduce(storageReduceData);
}
return(new Empty());
}
private async Task HandlerStorageReduce(StorageReduceData storageReduceData)
{
Guid productID = Guid.Parse(storageReduceData.ProductID);
Storage storageFromDb = await _storageContext.Storage.FirstOrDefaultAsync(q => q.ProductID.Equals(productID));
if (storageFromDb == null)
{
return;
}
if (storageFromDb.Amount < storageReduceData.Amount)
{
return;
}
storageFromDb.Amount -= storageReduceData.Amount;
Console.WriteLine(storageFromDb.Amount);
await _storageContext.SaveChangesAsync();
}
