static async Task MainAsync()
{
Console.Title = "Samples.Azure.ServiceBus.Client";
var endpointConfiguration = new EndpointConfiguration("Samples.Azure.ServiceBus.Client");
endpointConfiguration.SendFailedMessagesTo("error");
var transport = endpointConfiguration.UseTransport <AzureServiceBusTransport>();
var connectionString = Environment.GetEnvironmentVariable("AzureServiceBus.ConnectionString");
if (string.IsNullOrWhiteSpace(connectionString))
{
throw new Exception("Could not read the 'AzureServiceBus.ConnectionString' environment variable. Check the sample prerequisites.");
}
transport.ConnectionString(connectionString);
transport.UseForwardingTopology();
endpointConfiguration.UsePersistence <InMemoryPersistence>();
endpointConfiguration.UseSerialization <JsonSerializer>();
endpointConfiguration.EnableInstallers();
var recoverability = endpointConfiguration.Recoverability();
recoverability.DisableLegacyRetriesSatellite();
var endpointInstance = await Endpoint.Start(endpointConfiguration)
.ConfigureAwait(false);
Console.WriteLine("Press 'enter' to send a message");
Console.WriteLine("Press any other key to exit");
while (true)
{
var key = Console.ReadKey();
Console.WriteLine();
if (key.Key != ConsoleKey.Enter)
{
break;
}
#region request-message
var message = new LongProcessingRequest
{
Id = Guid.NewGuid(),
// set to a longer period of time to emulate longer processing
EstimatedProcessingTime = Constants.EstimatedProcessingTime
};
#endregion
await endpointInstance.Send("Samples.Azure.ServiceBus.Server", message)
.ConfigureAwait(false);
Console.WriteLine($"LongProcessingRequest with ID {message.Id} and estimated processing time {message.EstimatedProcessingTime} sent.");
}
await endpointInstance.Stop()
.ConfigureAwait(false);
}
public async Task Handle(LongProcessingRequest message, IMessageHandlerContext context)
{
log.Info($"Received LongProcessingRequest with ID {message.Id}, EstimatedProcessingTime: {message.EstimatedProcessingTime}.");
#region setting-timeout
var timeoutToBeInvokedAt = DateTime.Now + message.EstimatedProcessingTime + TimeSpan.FromSeconds(10);
var timeoutMessage = new ProcessingPossiblyFailed
{
Id = message.Id
};
await RequestTimeout(context, timeoutToBeInvokedAt, timeoutMessage)
.ConfigureAwait(false);
#endregion
log.Info($"Timeout is set to be executed at {timeoutToBeInvokedAt}.");
log.Info("Registering long running request with Processor.");
#region enqueue-request-for-processor
// Saga enqueues the request to process in a storage table. This is the
// logical equivalent of adding a message to a queue. If there would be
// business specific work to perform here, that work should be done by
// sending a message to a handler instead and not handled in the saga.
var request = new RequestRecord(message.Id, Status.Pending, message.EstimatedProcessingTime);
await table.ExecuteAsync(TableOperation.Insert(request))
.ConfigureAwait(false);
var processingReply = new LongProcessingReply
{
Id = message.Id
};
await context.Reply(processingReply)
.ConfigureAwait(false);
#endregion
log.Info($"Acknowledged LongProcessingRequest with ID {message.Id}.");
}
