Building a Custom Middleware Pipeline

Snippet

Building a Custom Middleware Pipeline

Middleware patterns allow you to chain behaviors around a core logic. This implementation uses delegates and higher-order functions to wrap a handler, a common architectural pattern found in modern web engines but implemented here in pure C#.

snippet.cs

csharp

public delegate void WorkHandler(string context);
 
public class PipelineBuilder
{
    public WorkHandler Build(List<Func<WorkHandler, WorkHandler>> middlewares)
    {
        WorkHandler pipeline = (ctx) => Console.WriteLine("Final Target: " + ctx);
        for (int i = middlewares.Count - 1; i >= 0; i--)
        {
            pipeline = middlewares[i](pipeline);
        }
        return pipeline;
    }
}

Breakdown

public delegate void WorkHandler(string context);

Defines the signature for the functions that will process the context.

pipeline = middlewares[i](pipeline);

Wraps the current pipeline with the next middleware in the list.

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Building a Custom Middleware Pipeline

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