Project C# Azure Functions V4

Author: Daniel Juarez

Project Overview

This project demonstrates a scalable Azure Functions V4 worker (.NET 9.0 Isolated) implementation, utilizing the Http trigger template to POST tickets to the RESTful Web API. Developed in Visual Studio 2022 Community Edition (v17.12.3), this project shows key features of Azure Functions, including secure authorization level to Function and integration with the external APIs.

Key Features:

• Implements Azure Functions V4 following clean architecture principles.
• Utilizes Dependency Injection using Microsoft.Extensions.DependencyInjection.
• Employs Logging using Microsoft.Extensions.Logging.
• Handles errors using exceptions types.
• Includes OpenAPI extension (Swagger documentation) using Microsoft.Azure.WebJobs.Extensions.OpenApi.
• Supports Unit testing using MS Unit Test and Moq.

Running the Project Locally

Note: Project Web API RESTfulNetCoreWebAPI-TicketList should be running locally before you run this Azure Function. To do so, follow these instructions.

Step 1: Run the Function API Locally

1. Press F5 to start the project. When Functions runtime starts locally, a set of OpenAPI and Swagger endpoints are shown in the output, along with the function endpoint.

2. Open the RenderSwaggerUI endpoint, which should look like: http://localhost:7086/api/swagger/ui. A page will be rendered, based on the OpenAPI definitions.

3. Select POST > Try it out, enter in the JSON request body values indicated (red square), and select Execute.

Step 2: Verify the Response

1. You'll get a response that looks like the following example:

2. You can verify your tickets have been successfully added by looking into the running Web API RESTfulNetCoreWebAPI-TicketList Swagger UI and selecting GET /api/Tickets/getAll > and then Execute.

Deploying to Azure App Service (Function Apps)

Now that you have verified the Azure Function is running, you can begin the deployment process by following the guidelines below:

• Continuously update function app code using Azure Pipelines
  This document walks you through how to build, package, and deploy an Azure Functions project with CI/CD using Azure DevOps.

• Azure Functions deployment slots
  Explains that deployment slots are separate live instances (e.g., “staging”) of your Function App, in addition to the production slot.

Additional Resources

• Continuous deployment for Azure Functions
• Zip deployment for Azure Functions
• Run your functions from a package file in Azure

Thank You.