Skip to main content

Service Bus Topic - Different ways to create and manage it

In the last post, we saw how easily we can integrate Service Bus Topic with WCF. Today topic is simple. There are times when we need to create topics and subscriptions that are valid for one day or two. Not only this, this task can sometimes be done by various persons of applications. Let’s see what our options are.
Of course the most powerful tool is the code. From code we can create topics, subscriptions and configure them in any way we want. When we create a topic we can set the default TTL value of messages that will be send to the topic, but we will not be able to set a property that specify the TTL of the topic (delete after 2 days for example). But, beside this we can set others values like the maximum size of the topic, enable or disable the batch operations and if the message duplication detection is activated. Similar configurations can be made to a subscription using SubscriptionDescription.
TopicDescription topicDescription = new TopicDescription()
{
RequiresDuplicateDetection = true;
}
In this moment we cannot specify from configuration file (or any kind of XML) a new topic or a new subscription or to reconfigure one of them. If we need something like this we can very easily create a small application for this purpose.
The last way to create topics and subscriptions is from Windows Azure portal. This can be created from the portal using only the mouse. All the main properties can be configures from here. We need to go the Service Bus tab. In this tab we will have buttons than give us the ability to create topics and subscriptions. The only limitation is on subscriptions, we cannot create filters and actions for them. Because of this a subscription created from the portal will receive all the messages.

Another way to create them (that I don’t enjoy) is by HTTP requests. Yes, using simple HTTP request we can create and manage Service Bus. The assembly that we use from the code to create a topic is only a wrapper over HTTP requests. Because the topic is quite complex, please find more information about this in the following link: http://msdn.microsoft.com/en-us/library/windowsazure/hh780752.aspx
We saw that we can create and manager topics in various ways. Because all the commands can be executed over HTTP/HTTPS we can create any configuration tool (and also use Service Bus) from any language and platform. This can be great when we want to integrate it in a big and old system that is written in Perl or from COBOL (that use a library like Libcurl).

Comments

Popular posts from this blog

ADO.NET provider with invariant name 'System.Data.SqlClient' could not be loaded

Today blog post will be started with the following error when running DB tests on the CI machine:
threw exception: System.InvalidOperationException: The Entity Framework provider type 'System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer' registered in the application config file for the ADO.NET provider with invariant name 'System.Data.SqlClient' could not be loaded. Make sure that the assembly-qualified name is used and that the assembly is available to the running application. See http://go.microsoft.com/fwlink/?LinkId=260882 for more information. at System.Data.Entity.Infrastructure.DependencyResolution.ProviderServicesFactory.GetInstance(String providerTypeName, String providerInvariantName) This error happened only on the Continuous Integration machine. On the devs machines, everything has fine. The classic problem – on my machine it’s working. The CI has the following configuration:

TeamCity.NET 4.51EF 6.0.2VS2013
It seems that there …

How to check in AngularJS if a service was register or not

There are cases when you need to check in a service or a controller was register in AngularJS.
For example a valid use case is when you have the same implementation running on multiple application. In this case, you may want to intercept the HTTP provider and add a custom step there. This step don’t needs to run on all the application, only in the one where the service exist and register.
A solution for this case would be to have a flag in the configuration that specify this. In the core you would have an IF that would check the value of this flag.
Another solution is to check if a specific service was register in AngularJS or not. If the service was register that you would execute your own logic.
To check if a service was register or not in AngularJS container you need to call the ‘has’ method of ‘inhector’. It will return TRUE if the service was register.
if ($injector.has('httpInterceptorService')) { $httpProvider.interceptors.push('httpInterceptorService&#…

Fundamental Books of a Software Engineer (version 2018)

More then six years ago I wrote a blog post about fundamental books that any software engineer (developer) should read. Now it is an excellent time to update this list with new entries.

There are 5 different categories of books, that represent the recommended path. For example, you start with Coding books, after that, you read books about Programming, Design and so on.
There are some books about C++ that I recommend not because you shall know C++, only because the concepts that you can learn from it.

Coding

Writing solid codeCode completeProgramming Pearls, more programming pearls(recommended)[NEW] Introduction to Algorithms

Programming

Refactoring (M. Fowler)Pragmatic ProgrammerClean code[NEW] Software Engineering: A Practitioner's Approach[NEW] The Mythical Man-Month[NEW] The Art of Computer Programming

Design

Applying UML and Patterns (GRASP patterns)C++ coding standards (Sutter, Alexandrescu)The C++ programming language (Stroustrup, Part IV)Object-oriented programming (Peter Coad)P…