public static IServiceCollection AddCustomDbContext(this IServiceCollection services, IConfiguration configuration, OrderingSettings settings)
{
services.AddDbContext <OrderingContext>(options =>
{
if (configuration.GetValue <bool>("DBInMemory"))
{
options.UseInMemoryDatabase("OrdersDB",
(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);
}
public Startup(IConfiguration configuration)
{
_configuration = configuration;
_settings = _configuration.GetSection(Program.AppName).Get <OrderingSettings>();
}
public static IServiceCollection AddCustomMassTransitAzureServiceBus(
this IServiceCollection services,
OrderingSettings settings,
bool isSagaTest)
{
services.AddMassTransit(options =>
{
// Integration Events as Masstransit Consumers.
// options.AddConsumersFromNamespaceContaining<OrderToPayConsumer>();
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(new Uri(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.SubscriptionEndpoint(host, "buscriptionxxx", "topicxxx", config => { config.xxx });
// 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_sales_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.Consumer<OrderToPayConsumer>( );
// e.Consumer(() => provider.GetRequiredService<IConsumer<OrderToPayConsumer>>());
e.StateMachineSaga(provider.GetRequiredService <OrdersSagaStateMachine>(),
provider.GetRequiredService <ISagaRepository <OrderSagaState> >());
});
}));
});
// services.AddSingleton<ISendEndpointProvider>(provider => provider.GetRequiredService<IBusControl>());
// Required to start Bus Service.
services.AddSingleton <Microsoft.Extensions.Hosting.IHostedService, BusHostedService>();
if (isSagaTest)
{
services.AddSingleton <ISagaRepository <OrderSagaState>, InMemorySagaRepository <OrderSagaState> >();
}
else
{
services.AddSingleton <ISagaRepository <OrderSagaState>, MessageSessionSagaRepository <OrderSagaState> >();
}
services.AddSingleton <OrdersSagaStateMachine>();
return(services);
}
