public Task Handle(VotePlaced message, IMessageHandlerContext context)
{
if (!Data.Started)
{
Data.Candidate = message.Candidate;
Data.Started = true;
}
Data.Count++;
var trackZipCode = new TrackZipCode
{
ZipCode = message.ZipCode
};
return context.Send(trackZipCode);
}
static async Task AsyncMain()
{
var endpointConfiguration = new EndpointConfiguration("Voter");
endpointConfiguration.SendFailedMessagesTo("error");
endpointConfiguration.AuditProcessedMessagesTo("audit");
endpointConfiguration.UseSerialization <JsonSerializer>();
endpointConfiguration.EnableInstallers();
endpointConfiguration.UsePersistence <InMemoryPersistence>();
var recoverability = endpointConfiguration.Recoverability();
recoverability.DisableLegacyRetriesSatellite();
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();
#region ConfigureSenderSideRouting-Voter
var remotePartitions = new[] { "John", "Abby" };
var routing = transport.Routing();
var distribution = routing.RegisterPartitionedDestinationEndpoint(
destinationEndpoint: "CandidateVoteCount",
partitions: remotePartitions);
distribution.AddPartitionMappingForMessageType <CloseElection>(
mapMessageToPartitionKey: message =>
{
return(message.Candidate);
});
#endregion
var endpointInstance = await Endpoint.Start(endpointConfiguration)
.ConfigureAwait(false);
Console.WriteLine("Press Enter to start election");
Console.WriteLine("Press Esc to stop election");
Console.ReadLine();
var random = new Random();
var votedZipCode = Enumerable.Range(1, 10).Select(x => random.Next(0, 99001).ToString("d5")).ToArray();
do
{
while (!Console.KeyAvailable)
{
var choice = random.Next(0, 2);
var candidate = remotePartitions[choice % 2];
var zipcode = votedZipCode[random.Next(0, 10)];
Console.WriteLine($"Voted for {candidate} from zip code {zipcode}");
var votePlaced = new VotePlaced
{
Candidate = candidate,
ZipCode = zipcode
};
await endpointInstance.Publish(votePlaced)
.ConfigureAwait(false);
await Task.Delay(1000)
.ConfigureAwait(false);
}
} while (Console.ReadKey(true).Key != ConsoleKey.Escape);
Console.WriteLine("Closing election");
var closeElection1 = new CloseElection
{
Candidate = remotePartitions[0]
};
await endpointInstance.Send(closeElection1)
.ConfigureAwait(false);
var closeElection2 = new CloseElection
{
Candidate = remotePartitions[1]
};
await endpointInstance.Send(closeElection2)
.ConfigureAwait(false);
await endpointInstance.Stop()
.ConfigureAwait(false);
}
public void Handle(VotePlaced evt)
{
Polls.Find(p => p.Id == evt.Id).Votes[evt.User] = evt.Option;
}
public void Apply(VotePlaced evt)
{
UsersThatVoted.Add(evt.User);
}
