public Startup(IConfiguration configuration)
{
_configuration = configuration;
_settings = _configuration.GetSection(Program.AppName).Get <BillingSettings>();
}
public static IServiceCollection AddCustomMassTransitAzureServiceBus(
this IServiceCollection services,
BillingSettings settings,
bool isSagaTest)
{
services.AddMassTransit(options =>
{
options.AddConsumersFromNamespaceContaining <OrderReadyToBillIntegrationEventHandler>();
options.AddBus(provider => Bus.Factory.CreateUsingAzureServiceBus(cfg =>
{
// cfg.EnablePartitioning = true; // Message Broker is enabled !
cfg.RequiresSession = !isSagaTest;
cfg.UseJsonSerializer();
// var host = cfg.Host(settings.EventBusConnectionString, hostConfig =>
var host = cfg.Host(settings.EventBusUrl, hostConfig =>
{
// hostConfig.ExchangeType = ExchangeType.Topic;
// hostConfig.TransportType = Microsoft.Azure.ServiceBus.TransportType.AmqpWebSockets;
// hostConfig.RetryLimit = 3;
hostConfig.OperationTimeout = TimeSpan.FromMinutes(1);
hostConfig.SharedAccessSignature(x =>
{
x.KeyName = settings.EventBusKeyName;
x.SharedAccessKey = settings.EventBusSharedAccessKey;
// https://github.com/Azure/azure-service-bus-dotnet/issues/399
// without this line MassTransit sets the Token TTL to 0.00 instead of null
x.TokenTimeToLive = TimeSpan.FromDays(1);
});
});
//cfg.Send<OrderBilledSuccessfully>(x =>
//{
// x.UseSessionIdFormatter(context =>
// {
// var sessionId = context.CorrelationId.ToString();
// context.SetReplyToSessionId(sessionId);
// return sessionId;
// });
//});
//cfg.Send<IEvent>(x =>
//// cfg.Send<OrderReadyToBillMessage>(x =>
//{
// x.UseSessionIdFormatter(context =>
// {
// var sessionId = context.CorrelationId.ToString();
// context.SetReplyToSessionId(sessionId);
// return sessionId;
// });
//});
cfg.ReceiveEndpoint(host, "saga_billing_queue", e =>
{
//e.UseCircuitBreaker(cb =>
//{
// cb.TrackingPeriod = TimeSpan.FromMinutes(1);
// cb.TripThreshold = 15;
// cb.ActiveThreshold = 10;
// cb.ResetInterval = TimeSpan.FromMinutes(5);
//});
e.UseMessageRetry(r =>
{
r.Interval(4, TimeSpan.FromSeconds(30));
});
// All messages that should be published, are collected in a buffer, which is called “outbox”
//e.UseInMemoryOutbox();
//e.SubscribeMessageTopics = true;
//e.RemoveSubscriptions = true;
// e.EnablePartitioning = true; // Message Broker is enabled !
e.MessageWaitTimeout = TimeSpan.FromMinutes(5);
e.RequiresSession = !isSagaTest;
e.StateMachineSaga(provider.GetRequiredService <BillingSagaStateMachine>(),
provider.GetRequiredService <ISagaRepository <BillingSagaState> >());
});
}));
});
// services.AddSingleton<ISendEndpointProvider>(provider => provider.GetRequiredService<IBusControl>());
// Required to start Bus Service.
services.AddSingleton <Microsoft.Extensions.Hosting.IHostedService, BusHostedService>();
if (isSagaTest)
{
services.AddSingleton <ISagaRepository <BillingSagaState>, InMemorySagaRepository <BillingSagaState> >();
}
else
{
services.AddSingleton <ISagaRepository <BillingSagaState>, MessageSessionSagaRepository <BillingSagaState> >();
}
services.AddSingleton <BillingSagaStateMachine>();
return(services);
}
public static IServiceCollection AddCustomDbContext(this IServiceCollection services, IConfiguration configuration, BillingSettings settings)
{
services.AddDbContext <BillingContext>(options =>
{
if (configuration.GetValue <bool>("DBInMemory"))
{
options.UseInMemoryDatabase("BillingDB",
(ops) =>
{
});
}
else
{
options.UseSqlServer(settings.OrdersDBConnectionString,
sqlServerOptionsAction: sqlOptions =>
{
sqlOptions.MigrationsAssembly(typeof(Startup).GetTypeInfo().Assembly.GetName().Name);
//Configuring Connection Resiliency: https://docs.microsoft.com/en-us/ef/core/miscellaneous/connection-resiliency
sqlOptions.EnableRetryOnFailure(maxRetryCount: 10, maxRetryDelay: TimeSpan.FromSeconds(30), errorNumbersToAdd: null);
});
// Changing default behavior when client evaluation occurs to throw.
// Default in EF Core would be to log a warning when client evaluation is performed.
options.ConfigureWarnings(warnings => warnings.Throw(RelationalEventId.QueryClientEvaluationWarning));
//Check Client vs. Server evaluation: https://docs.microsoft.com/en-us/ef/core/querying/client-eval
}
});
return(services);
}
