Скачать или смотреть Handling Conditional Route Configuration in .NET Core API for Controllers

Discover how to manage conditional routing in your `.NET Core API` by selectively disabling controllers while maintaining critical routes.
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Managing Conditional Routing in .NET Core API

In modern web application development, especially with .NET Core, developers often face challenges related to their API's routing. One intriguing scenario is when you need a single application with multiple startup configurations, each with its unique routing logic. This article sheds light on how to effectively manage controllers in your .NET Core API so that you can disable them based on settings defined in your appsettings.json, while still maintaining essential functionalities like health checks.

The Problem

Imagine you are tasked with developing a .NET Core API application that has three distinct hosting options, each requiring different routing mechanisms. You need the ability to selectively disable all controllers except for the health check endpoint based on a configuration setting. This functionality must be implemented in such a way that it avoids any manual adjustments whenever new controllers are added to the project.

The Solution

To achieve this nuanced routing configuration, we can utilize a feature in .NET Core known as Application Parts along with the ConfigureApplicationPartManager() method. Here's how you can implement this solution step-by-step:

Step 1: Understanding Application Parts

Application Parts in ASP.NET Core allow you to dynamically manage the discovery of controllers and their routing. You can choose which controllers to include or exclude from the application.

Step 2: Configure Application Parts in Startup

In your Startup.cs file, you need to set up the ApplicationPartManager to conditionally control the availability of your controllers. Here’s an example implementation:

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Step 3: Create Custom Feature Providers

You will need to implement your custom feature providers to control which controllers are loaded based on your routing logic:

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Step 4: Update appsettings.json

Make sure to include a setting in your appsettings.json file to toggle your controller management:

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Conclusion

By leveraging the power of Application Parts and carefully controlling the routing configuration in your .NET Core API, you can create a flexible environment tailored to various use cases. This approach not only consolidates your routing logic but also simplifies the process of adding new controllers. Now, you can focus on your application's core functionality without the hassle of manual routing modifications every time you create a new controller.

With this method in mind, you'll be well-equipped to manage your .NET Core API effectively and efficiently. Happy coding!