public void ConstructorReturnsMessageTopicAttribute()
{
const string topic = "sample-topic";
var sut = new MessageTopicAttribute(topic);
Assert.Equal(topic, sut.Topic);
}
/// <summary>
/// For receiving messages.
/// </summary>
public static IServiceCollection AddServiceBusQueueSubscriber <TMessageType>(
this IServiceCollection collectionBuilder,
string serviceName)
where TMessageType : class, IMessageContract
{
var attribute = MessageTopicAttribute.GetRequiredForType <TMessageType>();
collectionBuilder.TryAddMessageSerializer <TMessageType>();
collectionBuilder.AssertMessageHandler <TMessageType>();
collectionBuilder.AddSingleton <IMessageConsumer <TMessageType> >(svc => new MessageSubscriber <TMessageType>(serviceName, attribute.Topic, ChannelType.PointToPoint, svc));
return(collectionBuilder);
}
/// <summary>
/// For sending messages.
/// </summary>
public static async Task <IServiceCollection> AddServiceBusQueueBrokerAsync <TMessageType>(
this IServiceCollection collectionBuilder,
IConfiguration configuration)
where TMessageType : class, IMessageContract
{
var attribute = MessageTopicAttribute.GetRequiredForType <TMessageType>();
var infrastructureUpdater = new InfrastructureUpdater(configuration);
await infrastructureUpdater.CreateQueueAsync(attribute.Topic);
collectionBuilder.TryAddMessageSerializer <TMessageType>();
collectionBuilder.AddSingleton <IMessageProducer <TMessageType> >(svc => new MessageBroker <TMessageType>(attribute.Topic, svc, ChannelType.PointToPoint));
return(collectionBuilder);
}
/// <summary>
/// For receiving messages.
/// </summary>
public static IServiceCollection AddServiceBusTopicSubscriberAsync <TMessageType>(
this IServiceCollection collectionBuilder,
IConfiguration configuration,
string serviceName)
where TMessageType : class, IMessageContract
{
var attribute = MessageTopicAttribute.GetRequiredForType <TMessageType>();
if (configuration.IsCodeFirstServiceBus())
{
var connectionString = configuration.GetServiceBusConnectionString();
collectionBuilder.AddHealthChecks().AddAzureServiceBusTopic(connectionString, attribute.Topic);
}
collectionBuilder.TryAddMessageSerializer <TMessageType>();
collectionBuilder.AssertMessageHandler <TMessageType>();
collectionBuilder.AddSingleton <IMessageConsumer <TMessageType> >(svc => new MessageSubscriber <TMessageType>(serviceName, attribute.Topic, ChannelType.PublishSubscribe, svc));
return(collectionBuilder);
}
public static async Task <Microsoft.AspNetCore.Builder.IApplicationBuilder> CreateOrUpdateTopicSubscriptionAsync <TMessageType>(
this Microsoft.AspNetCore.Builder.IApplicationBuilder app,
string serviceName)
where TMessageType : class, IMessageContract
{
var configuration = app.ApplicationServices.GetService <IConfiguration>();
if (configuration.IsCodeFirstServiceBus())
{
var attribute = MessageTopicAttribute.GetForType <TMessageType>();
if (attribute == null)
{
throw new InternalErrorException($"Missing topic, use {nameof(MessageTopicAttribute)}");
}
var connectionString = configuration.GetServiceBusConnectionString();
var channelName = configuration.GetServiceBusChannelName(ChannelType.PublishSubscribe, attribute.Topic);
var messageHandler = app.ApplicationServices.GetService <IMessageHandler <TMessageType> >();
var infrastructureUpdater = new InfrastructureUpdater(configuration);
await infrastructureUpdater.CreateOrUpdateSubscriptionAsync <TMessageType>(connectionString, channelName, serviceName, attribute.Topic, messageHandler);
}
return(app);
}
