public void CanStartMessageBroker()
{
var queueFactory = Substitute.For<IQueueFactory>();
var messageBrokerConfig = new MessageBrokerConfig { RemoteQueueName = "MyRemoteQueueName", ServiceName = "TestBroker" };
var entityConnectionConfig = new EntityConnectionConfig(new DatabaseConnectionConfig("(localdb)\\MSSQLLocalDB", "ABJA_Ripples"));
var logger = NullLogger.Instance;
var repositoryContextFactory = new RepositoryContextFactory(logger, entityConnectionConfig);
var queueHandlerFactory = new QueueHandlerFactory(logger, queueFactory);
var processInformation = new ProcessInformation();
using (var messageBroker = new MessageBroker(logger, messageBrokerConfig, repositoryContextFactory, queueHandlerFactory, queueFactory, processInformation))
{
var cancellationToken = new CancellationToken();
messageBroker.Start(cancellationToken);
messageBroker.Handler(new MessageBusServiceHandshakeMessage
{
ServiceName = "MyServiceName",
ServerName = "MyTestServer",
ReplyQueue = "MyQueue",
SendDateTime = DateTimeOffset.Now,
SubscribeHandlers = new List<SubscribeHandler> { new SubscribeHandler { Name = "MySubscriber", QueueName = "MyQueue", Durable = true, MessageType = "string", Topic = "MyTopic" } }
});
}
}
public static void AddMessageBrokerConfigProvider(
this IServiceCollection services,
MessageBrokerConfig brokerConfig,
ImmutableDictionary <string, Topic> topics
)
{
var messageBrokerConfigProvider = new MessageBrokerConfigProvider(brokerConfig, topics);
services.AddSingleton <IMessageBrokerConfigProvider>(messageBrokerConfigProvider);
}
/// <summary>
/// Build Message Broker
/// </summary>
/// <returns>The Message Bus</returns>
public IMessageBroker Build()
{
var messageBrokerConfig = new MessageBrokerConfig
{
ServiceName = _serviceName,
RemoteQueueName = _remoteQueueName
};
var queueFactory = new QueueFactory(_logger);
var queueHandlerFactory = new QueueHandlerFactory(_logger, queueFactory);
return(new MessageBroker(_logger, messageBrokerConfig, _repositoryContextFactory, queueHandlerFactory, queueFactory, _processInformation));
}
public static void CreateTopicsOnMessageBroker(
this IServiceCollection services,
MessageBrokerConfig brokerConfig,
ImmutableDictionary <string, Topic> topics
)
{
var adminClientConfig = new AdminClientConfig
{
BootstrapServers = brokerConfig.Servers,
};
using var adminClient = new AdminClientBuilder(adminClientConfig).Build();
var topicsToCreate =
topics.Values.SelectMany(topic =>
{
return(new[]
{
new TopicSpecification
{
Name = topic.Name
},
new TopicSpecification
{
Name = topic.DeadLetterQueueName
}
});
});
var existingTopics = adminClient.GetMetadata(TimeSpan.FromSeconds(30.0)).Topics;
var finalTopicsToCreate =
topicsToCreate.Where(topic =>
!existingTopics.Any(existingTopic => existingTopic.Topic.Contains(topic.Name))
).ToImmutableArray();
if (finalTopicsToCreate.Length > 0)
{
adminClient.CreateTopicsAsync(finalTopicsToCreate).Wait();
}
}
public Startup(IConfiguration configuration)
{
Configuration = configuration;
_messageBrokerConfig = ExtractMessageBrokerConfig(configuration);
_topics = ExtractTopics(configuration);
}
public MessageBrokerConfigProvider(MessageBrokerConfig config, IImmutableDictionary <string, Topic> topics)
{
_config = config;
_topics = topics;
}
