// Inject background service, for receiving message
public void ConfigureServices(IServiceCollection services)
{
var serviceProvider = services.BuildServiceProvider();
var loggerFactorySrv = serviceProvider.GetService <ILoggerFactory>();
services.AddDbContextPool <EventSourcingDbContext>(options => options.UseSqlServer(
_systemLocalConfiguration.EventDbConnection,
//enable connection resilience
connectOptions =>
{
connectOptions.EnableRetryOnFailure();
connectOptions.CommandTimeout(Identifiers.TimeoutInSec);
}) //.UseLoggerFactory(loggerFactorySrv)// to log queries
);
/// Injecting message receiver background service
///
#region worker background services
#region event sourcing worker
services.AddSingleton <IHostedService, RabbitMQSubscriberWorker>(srv =>
{
//get pingServicek
var eventSourcingSrv = new EventSourcingLedger(loggerFactorySrv, srv.GetService <EventSourcingDbContext>());
return(new RabbitMQSubscriberWorker
(serviceProvider, loggerFactorySrv, new RabbitMQConfiguration
{
hostName = _systemLocalConfiguration.MessagesMiddleware,
exchange = _systemLocalConfiguration.MiddlewareExchange,
userName = _systemLocalConfiguration.MessagesMiddlewareUsername,
password = _systemLocalConfiguration.MessagesMiddlewarePassword,
routes = _systemLocalConfiguration.MessageSubscriberRoute?.Split('-') ?? new string[0]
}
, (pingMessageCallback) =>
{
try
{
var message = pingMessageCallback();
if (message != null)
{
var domainModel = Utilities.JsonBinaryDeserialize <DomainModels.Types.DomainModel <object> >(message);
var dbModel = DbModelFactory.Create(domainModel);
if (dbModel != null)
{
eventSourcingSrv.Add(dbModel).Wait();
}
}
Logger.LogInformation($"[x] Event sourcing service receiving a message from exchange: {_systemLocalConfiguration.MiddlewareExchange}, route :{_systemLocalConfiguration.MessageSubscriberRoute}");
}
catch (Exception ex)
{
Logger.LogCritical(ex, "Object de-serialization exception.");
}
}));
});
#endregion
#endregion
}
public Task <int> Add(PingModel pingEventSourcing)
{
return
(_pingEventSourcingLedger
.Add(DbModelFactory.Create(pingEventSourcing)));
}