public async Task Consume(ConsumeContext <PaymentCancelled> context)
{
var id = context.CorrelationId.GetValueOrDefault();
var billing = await dbContext.Billings.FindAsync(id);
if (billing is null)
{
return;
}
logger.LogInformation($"'{id}' exists in this context. Deleting because of {nameof(PaymentCancelled)} message.");
dbContext.Billings.Remove(billing);
await dbContext.SaveChangesAsync();
await context.Publish <BillingCancelled>(new { context.CorrelationId });
}
public async Task Consume(ConsumeContext <OrderRegistered> context)
{
var id = context.CorrelationId.GetValueOrDefault();
var address = context.Message.Address;
var quantity = context.Message.Quantity;
var amount = quantity * 2.5f;
logger.LogInformation($"Received {nameof(OrderRegistered)} message with {{ Id = '{id}', Address = '{address}', Quantity = {quantity} }}.");
dbContext.Add(new Billing {
Id = id, Address = address, Quantity = quantity, Amount = amount
});
await dbContext.SaveChangesAsync();
logger.LogInformation($"Billing '{id}' created. Waiting for Payment and Stock services.");
await context.Publish <BillingPrepared>(new { context.CorrelationId });
}
public async Task Consume(ConsumeContext <PaymentCreated> context)
{
var id = context.CorrelationId.GetValueOrDefault();
var quantity = context.Message.Quantity;
var amount = context.Message.Amount;
logger.LogInformation($"Received payment with {{ Id '{id}', Quantity = {quantity}, Amount = {amount}€ }}. Processing...");
await Task.Delay(TimeSpan.FromSeconds(5));
var billing = new Billing {
Id = id
};
dbContext.Add(billing);
await dbContext.SaveChangesAsync();
logger.LogInformation($"Processed.");
await context.Publish <BillingCompleted>(new { context.CorrelationId });
}
public async Task Consume(ConsumeContext <PaymentAccepted> context)
{
var id = context.CorrelationId.GetValueOrDefault();
var billing = await dbContext.Billings.FindAsync(id);
logger.LogInformation($"Received payment with Id '{id}'. Processing...");
if (billing is null)
{
logger.LogInformation($"'{id}' does not exists in this context. Rejecting, will retry in a few.");
throw new BillingNotFoundException();
}
logger.LogInformation($"'{id}' exists in this context.");
billing.Paid = true;
await dbContext.SaveChangesAsync();
logger.LogInformation($"Processed.");
await context.Publish <BillingCompleted>(new { context.CorrelationId });
}