Received message also has Bus property which is reference to Bus instance the message was sent on. Consume method receives message as parameter and received data is hold in Message property. Consumer class should inherit from Consumes.Context and implement Consume method. It will watch for messages of ImportFile. Import data processorįirst create message consumer in ImportDataProcessor project. Now if you run your Scheduled Job it will run successfully, but you will not see any message on Azure Queues because MassTransit requires at least one subscriber to particular message. Using (var bus = AzureBusInitializer.CreateBus(ĪzureBusConfiguration.ImportDataQueueName, x => ) Var container = CreateStorageContainer() We can publish message without wrapping into another class like with Azure Queues (which requires to wrap message within BrokeredMessage). Also it do not require aditional initialization, but connection string is retrieved from Web.config. This Scheduled Job does not listen to any messages, so it doesn't metter what queue name to provide. Bus is created by providing queue name to listen for messages on, additional initialization and connection string. I changed Execute method to use newly created Bus initializer. Previous Scheduled Job can be found here. Return new ServiceBusConnectionStringBuilder(connectionString) Private static ServiceBusConnectionStringBuilder CnBuilder(string connectionString) H.SetKey(CnBuilder(connectionString).SharedAccessKey) H.SetKeyName("RootManageSharedAccessKey") Sbc.UseAzureServiceBus(a => a.ConfigureNamespace( Var queueUri = "azure-sb://" + AzureBusConfiguration.Namespace + "/" + queueName Each Bus instance is created with watching for messages on some queue, with additional initialization if needed and creating connection to Azure Service Bus Queue using connection string. Here I am just wrapping my Bus initialization logic for whole application. Next create MassTransit's Bus initialization class AzureBusInitializer with factory method which creates IServiceBus instance. Public const string ImportArticleQueueName = "importarticlequeue" Public const string ImportDataQueueName = "importqueue" Public const string Namespace = "epinewssite" public static class AzureBusConfiguration Probably in production system you would want to make it configurable (at least namespace name). I called class AzureBusConfiguration and added names of namespace and all queues there. Install-Package MassTransit.AzureServiceBusĪfter installing NuGet package add common configuration to Configuration project. Then install NuGet package for MassTransit with Azure Service Bus into all projects which uses Azure Service Bus - Configuration, ImportArticleProcessor, ImportDataProcessor, NewsSite. This time I decided to share common initialization and configuration between projects and created new project for shared configuration initialization - Configuration. So you have to read it before to understand solution completely. I am using the project from previous article. In my article I used tutorial from David Prothero - MassTransit on Microsoft Azure. In this article I am going to describe how to use MassTransit for my task. Most popular ones are MassTransit and NServiceBus, but there are also other frameworks like Rebus. Luckly there are several frameworks available to help with these issues. It means that you have to handle errors, retry policy and transaction handling on your own. Queues are only transport layer - those are used to pass messages around. While Azure Service Bus Queues did it's work, it has several issues. More than a month ago I wrote an article Azure infrastructure usage for EPiServer data import in which I described how to use Azure Service Bus Queues to create import of EPiServer data. In this article I am going to describe how to use MassTransit's Service Bus framework with Azure Service Bus to improve EPiServer data import. Creating reliable message passing might be hard, but luckly there are several frameworks available. DoSomethingSpecificException is retried using global policy.Azure has Service Bus service available, but while it is called 'Service Bus' it is messaging service as MSMQ or RabitMQ. IConsumerConfigurator consumerConfigurator)ĮndpointConfigurator.UseMessageRetry(r => Protected override void ConfigureConsumer(IReceiveEndpointConfigurator endpointConfigurator, R.Intervals(TimeSpan.FromSeconds(1), TimeSpan.FromSeconds(5), TimeSpan.FromSeconds(10), TimeSpan.FromSeconds(30)) Ĭonsumer definition part: public class DoSomethingConsumerDefinition : I was thinking that something like this should work(bus configuration part): services.AddMassTransit( I would like to create system wide retry policy (retry x times every y seconds) but modify/overwrite it in specific consumer (some exception should be ignored and moved to error queue without retry)
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