public void returns_expected_message_format()
{
var e = new DomainEventEnvelope
{
AggregateId = "A1",
EventId = Guid.Empty,
CorrelationId = "987F693E-EF45-4518-8AFB-105B209887B1",
Type = "foo-type",
Data = "{\"Foo\":\"bar\"}"
};
var result = MessagingHelper.CreateMessageFrom(e);
var expected = @"
{
""version"": ""1"",
""eventName"": ""foo-type"",
""x-correlationId"": ""987F693E-EF45-4518-8AFB-105B209887B1"",
""x-sender"": ""CapabilityService.WebApi, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null"",
""payload"": {""foo"":""bar""}
}";
Assert.Equal(
expected: expected.Replace(" ", "").Replace("\n", "").Replace("\r", ""),
actual: result.Replace(" ", "").Replace("\n", "").Replace("\r", "")
);
}
private async Task DoWork(CancellationToken stoppingToken)
{
using (var scope = _serviceProvider.CreateScope())
{
var dbContext = scope.ServiceProvider.GetRequiredService <CapabilityServiceDbContext>();
var domainEventsToPublish = await dbContext
.DomainEvents
.Where(x => x.Sent == null)
.ToListAsync(stoppingToken);
if (domainEventsToPublish.Any() == false)
{
return;
}
Log.Information($"Domain events to publish: {domainEventsToPublish.Count}");
var publisherFactory = scope.ServiceProvider.GetRequiredService <KafkaPublisherFactory>();
var eventRegistry = scope.ServiceProvider.GetRequiredService <IDomainEventRegistry>();
Log.Information("Connecting to kafka...");
using (var producer = publisherFactory.Create())
{
Log.Information("Connected!");
foreach (var evt in domainEventsToPublish)
{
var topicName = eventRegistry.GetTopicFor(evt.Type);
var message = MessagingHelper.CreateMessageFrom(evt);
try
{
var result = await producer.ProduceAsync(
topic : topicName,
message : new Message <string, string>
{
Key = evt.AggregateId,
Value = message
}
);
evt.Sent = result.Timestamp.UtcDateTime;
await dbContext.SaveChangesAsync();
Log.Information($"Domain event \"{evt.Type}>{evt.EventId}\" has been published!");
}
catch (Exception)
{
throw new Exception($"Could not publish domain event \"{evt.Type}>{evt.EventId}\"!!!");
}
}
}
}
}
public void returns_expected_message_format()
{
var e = new DomainEventEnvelope
{
AggregateId = "A1",
EventId = Guid.Empty,
Type = "foo-type",
Data = "{\"Foo\":\"bar\"}"
};
var result = MessagingHelper.CreateMessageFrom(e);
var expected = @"
{
""messageId"": ""00000000-0000-0000-0000-000000000000"",
""type"": ""foo-type"",
""data"": {""foo"":""bar""}
}";
Assert.Equal(
expected: expected.Replace(" ", "").Replace("\n", "").Replace("\r", ""),
actual: result.Replace(" ", "").Replace("\n", "").Replace("\r", "")
);
}
