public void Publish(IntegrationEvent @event)
{
var eventName = @event.GetType().Name.Replace(INTEGRATION_EVENT_SUFFIX, "");
var jsonMessage = JsonConvert.SerializeObject(@event);
var body = Encoding.UTF8.GetBytes(jsonMessage);
var message = new Message
{
MessageId = Guid.NewGuid().ToString(),
Body = body,
Label = eventName,
};
var topicClient = _serviceBusPersisterConnection.CreateModel();
topicClient.SendAsync(message)
.GetAwaiter()
.GetResult();
}
public void Publish(IntegrationEvent @event)
{
if (!_persistentConnection.IsConnected)
{
_persistentConnection.TryConnect();
}
var policy = RetryPolicy.Handle <BrokerUnreachableException>()
.Or <SocketException>()
.WaitAndRetry(_retryCount, retryAttempt => TimeSpan.FromSeconds(Math.Pow(2, retryAttempt)), (ex, time) =>
{
_logger.LogWarning(ex, "Could not publish event: {EventId} after {Timeout}s ({ExceptionMessage})", @event.Id, $"{time.TotalSeconds:n1}", ex.Message);
});
var eventName = @event.GetType().Name;
_logger.LogTrace("Creating RabbitMQ channel to publish event: {EventId} ({EventName})", @event.Id, eventName);
using (var channel = _persistentConnection.CreateModel())
{
_logger.LogTrace("Declaring RabbitMQ exchange to publish event: {EventId}", @event.Id);
channel.ExchangeDeclare(exchange: BROKER_NAME, type: "direct");
var message = JsonConvert.SerializeObject(@event);
var body = Encoding.UTF8.GetBytes(message);
policy.Execute(() =>
{
var properties = channel.CreateBasicProperties();
properties.DeliveryMode = 2; // persistent
_logger.LogTrace("Publishing event to RabbitMQ: {EventId}", @event.Id);
channel.BasicPublish(
exchange: BROKER_NAME,
routingKey: eventName,
mandatory: true,
basicProperties: properties,
body: body);
});
}
}
// Must return TRUE to indicate that the call was successfully processed
public async Task <bool> Process(IntegrationEvent integrationEvent)
{
// We know we're only called when Calls are saved, so the ObjectID will be the Call ID
int callID = integrationEvent.Object.ObjectID;
var manifest = await api.GetCallQuestionnaireManifest(callID);
var answers = await api.GetCallAnswers(callID);
var call = await api.GetCall(callID);
var target = await api.GetTarget(call.ProjectID.Value, call.TargetID.Value);
// Identify the Picture Answers by the fact they will have a non-null Picture property
var pictureAnswers = from a in answers where a.Picture != null select a;
Console.WriteLine("The answers for Call ID {0}, visiting {1} were saved", callID, target.Name);
foreach (var pictureAnswer in pictureAnswers)
{
// Figure out which Question and Item this Picture is for
var question = (from q in manifest.Questions where q.QuestionID == pictureAnswer.QuestionID select q).Single();
var item = (from i in manifest.Items where i.ItemID == pictureAnswer.ItemID select i).SingleOrDefault() ?? new QuestionnaireItem {
Caption = "(No item)"
};
Console.WriteLine("Picture {0} is the answer to {1} for {2}", pictureAnswer.Picture, question.Caption, item.Caption);
// Download the Picture's contents from the server
var bytes = await api.GetPicture(pictureAnswer.Picture.Value);
Console.WriteLine("Downloaded picture ({0}KB)", bytes.Length / 1024);
// Construct a filename
var filename = String.Format("{0}_{1}_{2}_{3}.jpg", target.Name, call.ActualStart.Value.ToShortDateString().Replace("/", "-"), question.Caption, item.Caption);
// Save the Picture locally
System.IO.File.WriteAllBytes(filename, bytes);
}
return(true);
}
protected override void Publish(Type eventType, IntegrationEvent eventDate)
{
if (!_persistentConnection.IsConnected)
{
_persistentConnection.TryConnect();
}
var policy = Policy.Handle <BrokerUnreachableException>()
.Or <SocketException>()
.WaitAndRetry(_retryCount, retryAttempt => TimeSpan.FromSeconds(Math.Pow(2, retryAttempt)), (ex, time) =>
{
_logger.LogWarning(ex, "Could not publish event: {EventId} after {Timeout}s ({ExceptionMessage})", eventDate.Id, $"{time.TotalSeconds:n1}", ex.Message);
});
var eventName = EventNameAttribute.GetNameOrDefault(eventType);
_logger.LogTrace("Creating RabbitMQ channel to publish event: {EventId} ({EventName})", eventDate.Id, eventName);
using (var channel = _persistentConnection.CreateModel())
{
_logger.LogTrace("Declaring RabbitMQ exchange to publish event: {EventId}", eventDate.Id);
var message = JsonConvert.SerializeObject(eventDate);
var body = Encoding.UTF8.GetBytes(message).AsMemory();
var model = channel;
var exchangeName = _eventBusRabbitMqOptions.RabbitMqPublishConfigure.GetExchangeName() ?? EXCHANGE_NAME;
model.ExchangeDeclare(exchange: exchangeName, type: "direct", durable: true);
policy.Execute(() =>
{
var properties = model.CreateBasicProperties();
properties.DeliveryMode = 2; // persistent
_logger.LogTrace("Publishing event to RabbitMQ: {EventId}", eventDate.Id);
model.BasicPublish(
exchange: exchangeName,
routingKey: eventName,
mandatory: true,
basicProperties: properties,
body: body);
});
}
}
/// <summary>
/// used to publish event.
/// this will resilient by default thanks to polly.
/// </summary>
/// <param name="event">
/// Event to publish.
/// </param>
public void Publish(IntegrationEvent @event)
{
if (!_persistentConnection.IsConnected)
{
_persistentConnection.TryConnect();
}
var policy = Policy.Handle <BrokerUnreachableException>()
.Or <SocketException>()
.WaitAndRetry(
_retryCount,
retryAttempt =>
TimeSpan.FromSeconds(Math.Pow(2, retryAttempt)),
(ex, time) => { _logger.LogWarning(ex.ToString()); });
using (var channel = _persistentConnection.CreateModel())
{
var eventName = @event.GetType().Name;
// to guarantee exchange exists.
// type direct means it will directly use bindingkey or routingkey instead of queue name.
channel.ExchangeDeclare(BrokerName,
"direct");
var message = JsonConvert.SerializeObject(@event);
var body = Encoding.UTF8.GetBytes(message);
policy.Execute(() =>
{
// ReSharper disable once AccessToDisposedClosure
var properties = channel.CreateBasicProperties();
properties.DeliveryMode = 2; // persistent
// ReSharper disable once AccessToDisposedClosure
channel.BasicPublish(BrokerName,
eventName,
true,
properties,
body);
});
}
}
public static IApplicationBuilder UseEventBus(this IApplicationBuilder app)
{
using (var serviceScope = app.ApplicationServices
.GetRequiredService <IServiceScopeFactory>()
.CreateScope())
{
var busClient = serviceScope.ServiceProvider.GetService <IBusClient>();
IntegrationEvent.Subscribe(busClient, message =>
{
using (var mediatorServiceScope = app.ApplicationServices
.GetRequiredService <IServiceScopeFactory>()
.CreateScope())
{
return(mediatorServiceScope.ServiceProvider.GetService <IMediator>().Publish(message));
}
});
}
return(app);
}
public void Publish(IntegrationEvent @event)
{
if (!_connection.IsConnected)
{
if (!_connection.Connect())
{
_logger.LogWarning($"Couldn't publish event {@event.Id}. No available connection was found.");
return;
}
}
using (var ch = _connection.CreateModel())
{
DeclareExchange(ch);
var msg = JsonSerializer.SerializeToUtf8Bytes(@event, @event.GetType());
ch.BasicPublish(_exchangeName,
routingKey: _subscriptionManager.GetEventKey(@event.GetType()),
body: msg);
}
}
public async Task SaveEventAsync(IntegrationEvent integrationEvent)
{
Guard.Requires(integrationEvent, nameof(integrationEvent)).IsNotNull();
if (await repository.CheckIfExistsByEventIdAsync(integrationEvent.EventId))
{
throw new Exception($"Internal error - event id: {integrationEvent.EventId} exists in event log");
}
await repository.CreateAsync(
new IntegrationEventLog
{
State = IntegrationEventState.ReadyToPublish,
EventId = integrationEvent.EventId,
EventCreationDate = integrationEvent.EventCreationDate,
EventType = integrationEvent.GetType().FullName,
EventBody = JsonConvert.SerializeObject(integrationEvent)
}
);
}
public async Task MarkAsPublishedAsync(IntegrationEvent @event)
{
if (@event == null)
{
throw new ArgumentNullException(nameof(@event));
}
var eventLog = await EventLogContext.IntegrationEventLogs.SingleOrDefaultAsync(x => x.EventId == @event.Id);
if (eventLog == null)
{
throw new EventLogNotFoundException(@event.Id);
}
eventLog.SetContent(@event); // Set content as published event has PublisherId set on publish.
eventLog.TimesSent++;
eventLog.StateId = (int)EventStateEnum.Published;
EventLogContext.IntegrationEventLogs.Update(eventLog);
await EventLogContext.SaveChangesAsync();
}
// METHODS
#region Publish
public void Publish(IntegrationEvent integrationEvent)
{
string eventName = integrationEvent.GetType().Name.Replace(INTEGRATION_EVENT_SUFFIX, "");
string jsonMessage = JsonConvert.SerializeObject(integrationEvent);
byte[] body = Encoding.UTF8.GetBytes(jsonMessage);
Message message = new Message
{
MessageId = Guid.NewGuid().ToString(),
Body = body,
Label = eventName,
};
_persisterConnection
.CreateModel()
.SendAsync(message)
.GetAwaiter()
.GetResult();
}
public void Post <T>(IntegrationEvent <T> @event) where T : class
{
var message = Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(@event));
var messageType = new ServiceEvent(@event.Service, @event.Event);
var basicProperties = _responseQueueChannelManager.GetChannel().CreateBasicProperties();
basicProperties.ContentType = "application/json";
basicProperties.MessageId = JsonConvert.SerializeObject(messageType);
basicProperties.Headers = new Dictionary <string, object> {
{ "SeenBy", 0 }
};
_responseQueueChannelManager
.GetChannel()
.BasicPublish(exchange: _settings.ExchangeName,
routingKey: _settings.RoutingKey,
basicProperties: basicProperties,
body: message);
}
public async Task PublishAsync(IntegrationEvent integrationEvent)
{
var eventType = integrationEvent.GetType().ToString();
var jsonMessage = JsonConvert.SerializeObject(integrationEvent);
var body = Encoding.UTF8.GetBytes(jsonMessage);
var message = new ServiceBusMessage(body)
{
MessageId = integrationEvent.Id.ToString(),
CorrelationId = integrationEvent.CorrelationId ?? string.Empty,
ApplicationProperties =
{
["event-type"] = eventType
}
};
await _sender.SendMessageAsync(message);
_logger.LogInformation($"Publish Event Successfully. Event ID: {integrationEvent.Id.ToString()}");
}
public Task PublishAsync(IntegrationEvent evt)
{
if (!_persistentConnection.IsConnected)
{
_persistentConnection.TryConnect();
}
var policy = Policy.Handle <BrokerUnreachableException>()
.Or <SocketException>()
.WaitAndRetry(_options.RetryCount, retryAttempt => TimeSpan.FromSeconds(Math.Pow(2, retryAttempt)), (ex, time) =>
{
_logger.LogWarning(ex.ToString());
});
using (var channel = _persistentConnection.CreateModel())
{
var eventName = evt.GetType().Name;
channel.ExchangeDeclare(exchange: _options.BrokerName,
type: "direct",
durable: _options.Durable,
autoDelete: _options.AutoDelete);
var message = JsonConvert.SerializeObject(evt);
var body = Encoding.UTF8.GetBytes(message);
policy.Execute(() =>
{
var properties = channel.CreateBasicProperties();
properties.DeliveryMode = 2; // persistent
channel.BasicPublish(exchange: _options.BrokerName,
routingKey: eventName,
mandatory: true,
basicProperties: properties,
body: body);
});
return(Task.CompletedTask);
}
}
private async Task CreateAndAssignIntegrationEvents(string[] buyerClientIDs, string localBuyerClientID, string token)
{
var checkoutEvent = new IntegrationEvent()
{
ElevatedRoles = new[] { ApiRole.FullAccess },
ID = "HeadStartCheckout",
EventType = IntegrationEventType.OrderCheckout,
Name = "HeadStart Checkout",
CustomImplementationUrl = _settings.EnvironmentSettings.MiddlewareBaseUrl,
HashKey = _settings.OrderCloudSettings.WebhookHashKey,
ConfigData = new
{
ExcludePOProductsFromShipping = false,
ExcludePOProductsFromTax = true,
}
};
await _oc.IntegrationEvents.SaveAsync(checkoutEvent.ID, checkoutEvent, token);
var localCheckoutEvent = new IntegrationEvent()
{
ElevatedRoles = new[] { ApiRole.FullAccess },
ID = "HeadStartCheckoutLOCAL",
EventType = IntegrationEventType.OrderCheckout,
CustomImplementationUrl = "https://marketplaceteam.ngrok.io", // local webhook url
Name = "HeadStart Checkout LOCAL",
HashKey = _settings.OrderCloudSettings.WebhookHashKey,
ConfigData = new
{
ExcludePOProductsFromShipping = false,
ExcludePOProductsFromTax = true,
}
};
await _oc.IntegrationEvents.SaveAsync(localCheckoutEvent.ID, localCheckoutEvent, token);
await _oc.ApiClients.PatchAsync(localBuyerClientID, new PartialApiClient { OrderCheckoutIntegrationEventID = "HeadStartCheckoutLOCAL" }, token);
await Throttler.RunAsync(buyerClientIDs, 500, 20, clientID =>
_oc.ApiClients.PatchAsync(clientID, new PartialApiClient {
OrderCheckoutIntegrationEventID = "HeadStartCheckout"
}, token));
}
public async void InvokeAsync_CorrectSerializedMessageIsProvided_NewConsumerInstanceIsCreatedAndUseed()
{
//prepare
var mockConsumer1 = new Mock <IConsumer <BookingCreated> >();
var mockConsumer2 = new Mock <IConsumer <BookingCreated> >();
int count = 0;
Func <IConsumer <BookingCreated> > consumerFactory = () =>
{
if (count == 0)
{
count = count + 1;
return(mockConsumer1.Object);
}
else
{
return(mockConsumer2.Object);
}
};
ISubscription subscription = new Subscription <BookingCreated>(consumerFactory, null);
IntegrationEvent <BookingCreated> integrationEvent = new IntegrationEvent <BookingCreated>(new BookingCreated {
BookingName = "bookingName"
}, "bookingcreatedeventtype");
string serializedMessage = JsonConvert.SerializeObject(integrationEvent);
//act
await subscription.InvokeAsync(serializedMessage);
await subscription.InvokeAsync(serializedMessage);
//check
var expected = integrationEvent.AsSource().OfLikeness <IntegrationEvent <BookingCreated> >()
.With(a => a.Content)
.EqualsWhen((p, m) => { return(m.Content.BookingName == p.Content.BookingName); }).CreateProxy();
mockConsumer1.Verify(x => x.ConsumeAsync(expected), Times.Once);
mockConsumer2.Verify(x => x.ConsumeAsync(expected), Times.Once);
}
public void Publish(IntegrationEvent @event)
{
if (!_persistentConnection.IsConnected)
{
_persistentConnection.TryConnect();
}
var policy = RetryPolicy.Handle <BrokerUnreachableException>()
.Or <SocketException>()
.WaitAndRetry(_retryCount, retryAttempt => TimeSpan.FromSeconds(Math.Pow(2, retryAttempt)), (ex, time) =>
{
_logger.LogWarning(ex.ToString());
});
using (var channel = _persistentConnection.CreateModel())
{
var eventName = @event.GetType()
.Name;
_logger.LogDebug($"Publishing event {eventName}");
channel.ExchangeDeclare(exchange: BROKER_NAME,
type: "direct");
var message = JsonConvert.SerializeObject(@event);
var body = Encoding.UTF8.GetBytes(message);
policy.Execute(() =>
{
var properties = channel.CreateBasicProperties();
properties.DeliveryMode = 2; // persistent
channel.BasicPublish(exchange: BROKER_NAME,
routingKey: eventName,
mandatory: true,
basicProperties: properties,
body: body);
_logger.LogDebug($"Event {eventName} published. \nMessage: {message}");
});
}
}
public async Task Remove(CharityContext db, IIntegrationEventQueue queue)
{
if (!Id.HasValue)
{
throw new Exception("Please ensure that Id field has been populated before removing.");
}
var charity = await db.Charities.FilterDeletedItems().SingleOrDefaultAsync(x => x.Id == Id);
if (charity == null)
{
throw new ArgumentException($"Donor with ID '{Id}' does not exist.", nameof(Id));
}
charity.IsDeleted = true;
MapFromEntity(charity);
await db.SaveChangesAsync();
var integrationEvent = new IntegrationEvent <CharityEvent>(ServiceNames.CharityService.ToString(), EventNames.RemoveCharity.ToString(), ToCharityEvent());
queue.Post(integrationEvent);
}
public Task SaveEventAsync(IntegrationEvent integrationEvent, IDbContextTransaction transaction)
{
try
{
if (transaction == null)
{
throw new ArgumentNullException(nameof(transaction));
}
var eventLogEntry = new IntegrationEventLogEntry(integrationEvent, transaction.TransactionId);
_integrationEventLogContext.Database.UseTransaction(transaction.GetDbTransaction());
_integrationEventLogContext.IntegrationEventLogs.Add(eventLogEntry);
return(_integrationEventLogContext.SaveChangesAsync());
}
catch (Exception ex)
{
throw;
}
}
public async Task SaveEventAndChangesAsync(IntegrationEvent evt)
{
_logger.LogInformation("----- POSIntegrationEventService - Saving changes and integrationEvent: {IntegrationEventId}", evt.Id);
await ResilientTransaction.New(_posContext, _logger).ExecuteAsync(async() =>
{
// Achieving atomicity between original catalog database operation and the IntegrationEventLog thanks to a local transaction
try
{
if (await _posContext.SaveChangesAsync() <= 0)
{
_logger.LogError("----- POSIntegrationEventService {0}", "Not can saved in Db");
}
}
catch (DbUpdateException e)
{
_logger.LogError("***** Error In SaveChangesAsync Process {0}", e.Message);
}
await _eventLogService.SaveEventAsync(@event: evt, transaction: Guid.NewGuid());
});
}
public async Task HandleAsync(OrderStatusChangedToAwaitingValidationIntegrationEvent @event)
{
var confirmedOrderStockItems = new List <ConfirmedOrderStockItem>();
foreach (var orderStockItem in @event.OrderStockItems)
{
var catalogItem = _catalogContext.CatalogItems.Find(orderStockItem.ProductId);
var hasStock = catalogItem.AvailableStock >= orderStockItem.Units;
var confiredOrderStockItem = new ConfirmedOrderStockItem(catalogItem.Id, hasStock);
confirmedOrderStockItems.Add(confiredOrderStockItem);
}
IntegrationEvent confirmedIntegrationEvent = confirmedOrderStockItems.Any(c => c.HasStock)
? new OrderStockConfirmedIntegrationEvent(@event.OrderId) as IntegrationEvent
: new OrderStockRejectedIntegrationEvent(@event.OrderId, confirmedOrderStockItems) as IntegrationEvent;
await _catalogIntegrationEventService.PublishThroughEventBusAsync(confirmedIntegrationEvent);
await _catalogIntegrationEventService.SaveEventAndCatalogContextChangesAsync(confirmedIntegrationEvent);
}
public async Task Remove(DonorContext db, IIntegrationEventQueue queue)
{
if (!Id.HasValue)
{
throw new Exception("Please ensure that Id field has been populated before removing.");
}
var transactionSource = await db.TransactionSources.FilterDeletedItems().SingleOrDefaultAsync(x => x.Id == Id);
if (transactionSource == null)
{
throw new ArgumentException($"Transaction Source with ID '{Id}' does not exist.", nameof(Id));
}
transactionSource.IsDeleted = true;
MapFromEntity(transactionSource);
await db.SaveChangesAsync();
var integrationEvent = new IntegrationEvent <DonorTransactionSourceEvent>(ServiceNames.DonorService.ToString(), EventNames.RemoveDonorTransactionSource.ToString(), ToDonorTransactionSourceEvent());
queue.Post(integrationEvent);
}
public void Publish(IntegrationEvent @event)
{
var eventName = @event.GetType().Name;
var factory = new ConnectionFactory()
{
HostName = "localhost"
};
using (var connection = factory.CreateConnection())
using (var channel = connection.CreateModel())
{
channel.ExchangeDeclare(exchange: BROKER_NAME,
type: "direct");
string message = JsonConvert.SerializeObject(@event);
var body = Encoding.UTF8.GetBytes(message);
channel.BasicPublish(exchange: BROKER_NAME,
routingKey: eventName,
basicProperties: null,
body: body);
}
}
public async Task PublishThroughEventBusAsync(IntegrationEvent evt)
{
try
{
_logger.LogInformation(
"----- Publishing integration event: {IntegrationEventId_published} from {AppName} - ({@IntegrationEvent})",
evt.Id, evt.ProgramName, evt);
await _eventLogService.MarkEventAsInProgressAsync(evt.Id);
_eventBus.Publish(evt);
await _eventLogService.MarkEventAsPublishedAsync(evt.Id);
}
catch (Exception ex)
{
_logger.LogError(ex,
"ERROR Publishing integration event: {IntegrationEventId} from {AppName} - ({@IntegrationEvent})",
evt.Id, evt.ProgramName, evt);
await _eventLogService.MarkEventAsFailedAsync(evt.Id);
}
}
public async Task Handle(OrderStatusChangedToAwaitingValidationIntegrationEvent @event)
{
//Check item stocks.
List <ConfirmedStockItem> confirmedItems = new List <ConfirmedStockItem>();
foreach (var item in @event.StockItems)
{
var product = await _catalogContext.CatalogItems.FindAsync(item.ProductId);
confirmedItems.Add(
new ConfirmedStockItem
{
ProductId = item.ProductId, HasStock = product.AvailableStock >= item.Units
});
}
//If they are available publish an event accepting the order, if not reject the order
//var resultEvent=confirmedItems.Any(c=>!c.HasStock) ?
// (IntegrationEvent) new OrderStockRejectedIntegrationEvent(@event.OrderId) : new OrderStockConfirmedIntegrationEvent(@event.OrderId);
IntegrationEvent resultEvent = null;
if (confirmedItems.Any(c => !c.HasStock))
{
resultEvent = new OrderStockRejectedIntegrationEvent(@event.OrderId);
}
else
{
resultEvent = new OrderStockConfirmedIntegrationEvent(@event.OrderId);
foreach (var item in @event.StockItems)
{
var product = _catalogContext.CatalogItems.Find(item.ProductId);
product.AvailableStock -= item.Units;
_catalogContext.SaveChanges();
}
}
//TODO: save event to eventLog
//Thread.Sleep(2000);
_eventBus.Publish(resultEvent);
}
private void Subscribe()
{
Task.Run(async() =>
{
var subscription = _client.DB().SubscribeStream(_stream, _cursor + 1);
var retryPolicy = Policy
.Handle <Exception>()
.WaitAndRetryForeverAsync(retryAttempt => TimeSpan.FromSeconds(Math.Pow(2, retryAttempt)));
do
{
await subscription.MoveNext().ConfigureAwait(false);
await retryPolicy.ExecuteAsync(async() =>
{
var eventJson = Encoding.UTF8.GetString(subscription.Current.Value);
var metadataJson = Encoding.UTF8.GetString(subscription.Current.Header);
var metadata = JsonConvert.DeserializeObject <Metadata>(metadataJson);
var integrationEvent = new IntegrationEvent(eventJson, metadata);
await DispatchToSubscribersAsync(integrationEvent);
// update cursor. This only works when the commands are idempotent
// eg. use ISourceId, or an Idempotent Producer
var cursorsMessageInput = new MessageInput
{
ID = Guid.NewGuid().ToString(),
Type = "cursors",
Value = Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(_cursor))
};
await _client.DB().AppendStream(_cursorsStream, cursorsMessageInput);
_cursor = subscription.Current.Position;
});
}while (true);
});
}
protected override void Publish(Type eventType, IntegrationEvent eventDate)
{
var exceptions = new List <Exception>();
var eventName = EventNameAttribute.GetNameOrDefault(eventType);
if (_subsManager.IncludeEventTypeForEventName(eventName))
{
var eventHandleTypes = _subsManager.TryGetEventHandlerTypes(eventName);
foreach (var eventHandleType in eventHandleTypes)
{
try
{
var handlerInstance = _eventHandlerFactory.GetHandler(eventHandleType);
var concreteType = typeof(IIntegrationEventHandler <>).MakeGenericType(eventType);
var method = concreteType.GetMethod("Handle");
if (method != null)
{
((Task)method.Invoke(handlerInstance, new object[] { eventDate })).GetAwaiter().GetResult();
}
}
catch (TargetInvocationException ex)
{
exceptions.Add(ex.InnerException);
}
catch (Exception ex)
{
exceptions.Add(ex);
}
}
}
else
{
_logger.LogWarning("No subscription for local memory event: {eventName}", eventName);
}
if (exceptions.Any())
{
throw new AggregateException(
"More than one error has occurred while triggering the event: " + eventType, exceptions);
}
}
public async Task DeleteEventAndModuloContextChangesAsync(IntegrationEvent evt)
{
var strategy = _moduloContext.Database.CreateExecutionStrategy();
await strategy.ExecuteAsync(async() => {
using (var transaction = _moduloContext.Database.BeginTransaction())
{
try
{
await _moduloContext.SaveChangesAsync();
await _eventLogService.SaveEventAsync(evt, _moduloContext.Database.CurrentTransaction.GetDbTransaction());
transaction.Commit();
}
catch (Exception ex)
{
transaction.Rollback();
var sqlException = ex.InnerException as System.Data.SqlClient.SqlException;
throw new Exception(sqlException.Number + "::" + sqlException.Message);
}
}
});
}
public void Publish(IntegrationEvent @event)
{
if (!_producerConnection.IsConnected)
{
_producerConnection.TryConnect();
}
var eventName = @event.GetType()
.Name;
var body = JsonConvert.SerializeObject(@event);
var policy = RetryPolicy.Handle <KafkaException>()
.WaitAndRetry(5, retryAttempt => TimeSpan.FromSeconds(Math.Pow(2, retryAttempt)), (ex, time) =>
{
_logger.LogWarning(ex.ToString());
});
var conn = _producerConnection.CreateConnect() as Producer <Null, string>;
policy.Execute(() =>
{
conn.ProduceAsync(eventName, null, body).GetAwaiter().GetResult();
});
}
public void Publish(IntegrationEvent @event)
{
if (!_persistentConnection.IsConnected)
{
_persistentConnection.TryConnect();
}
var policy = Policy.Handle <BrokerUnreachableException>()
.Or <SocketException>()
.WaitAndRetry(_retryCount, retryAttempt => TimeSpan.FromSeconds(Math.Pow(2, retryAttempt)),
(ex, time) =>
{
Debug.WriteLine("Could not publish event");
});
var eventName = @event.GetType().Name;
using (var channel = _persistentConnection.CreateModel())
{
channel.ExchangeDeclare(BROKER_NAME, "direct");
var message = JsonConvert.SerializeObject(@event);
var body = Encoding.UTF8.GetBytes(message);
policy.Execute(() =>
{
var properties = channel.CreateBasicProperties();
properties.DeliveryMode = 2;
channel.BasicPublish(
BROKER_NAME,
eventName,
true,
properties,
body);
});
}
}
public async Task SaveAsync(IntegrationEvent @event, string eventState)
{
var requestModel = new SaveEventApiRequestModel
{
EventId = @event.Id,
EventState = eventState,
EventName = @event.EventName,
Content = JsonConvert.SerializeObject(@event),
Username = @event.Username,
OrganisationId = @event.OrganisationId,
Source = @event.Source,
IpAddress = @event.IpAddress
};
var apiRequest = new ApiRequest <SaveEventApiRequestModel>
{
Data = requestModel,
EndpointAddress = $"{this.configuration["EventLoggingUrl"]}{ApiConstants.EventLoggingApiEndpoint}"
};
await this.apiClientService.PostAsync <ApiRequest <SaveEventApiRequestModel>, SaveEventApiRequestModel, BaseResponseModel>(apiRequest);
}