Azure Queues And Serverless Functions

Next, add a new class called “AzureQueueMessage” to the project and add the below code to it. Do not forget to add your connection string,

using Azure.Storage.Queues;
namespace ConsoleAppAzureQueue {
    public class AzureQueueMessage {
        public static async Task < bool > InsertMessage(string queueName, string message) {
            try {
                QueueClientOptions queueClientOptions = new QueueClientOptions();
                queueClientOptions.MessageEncoding = QueueMessageEncoding.Base64;
                var connectionString = "<Connection string here>";
                var queueClient = new QueueClient(connectionString, queueName, queueClientOptions);
                if (queueClient.Exists()) {
                    await queueClient.SendMessageAsync(message);
                }
            } catch {
                return false;
            }
            return true;
        }
    }
}

Add the below code to the “Program.cs” file,

using ConsoleAppAzureQueue;
await AzureQueueMessage.InsertMessage("mnbtestqueue", "test");
Console.WriteLine("Message added!");

Now, if we run the application, we see a message is added to the Azure queue we just created.

Creating the Serverless function to read the queue

The final part of the article is to create a serverless function that reads the message as soon as it is added into the queue. We follow the below steps. We start by creating a function app,

We can see the newly created function app below,

We now create the function.

Remember to select the Azure Queue Storage trigger.

Update the integration settings as below.

Open the logs as above.

We now run the console application again and a message is added to our queue.

This message is picked up by the function and processed as below,

Summary

In this article, we took a look at Azure queues. How we can populate them using a .NET console application. We finally looked at how we can create a serverless function in Azure to pick the message from this queue and process it. I hope this gives an idea of how these resources can be used in our solutions. Happy coding!