How to include Http request method name in client method names generated with NSwag

Question

When I generate a C# client for an API using NSwag, where the API includes endpoints that can be used with multiple Http request types (e.g. POST, GET) the client generates a method for each request with the same base name, plus a number.

E.g. Using this API: https://api.premiumfunding.net.au/assets/scripts/swagger/v1/swagger.json

The schema contains an endpoint /contract that supports GET and POST requests, and an endpoint /contract/{ID} that supports GET, POST and DELETE requests.

The generated client has methods:

• ContractAsync for GET requests without ID
• Contract2Async for POST requests without ID
• Contract3Async for GET requests with ID
• Contract4Async for POST requests with ID
• Contract5Async for DELETE requests with ID

I would like it to generate methods named:

• GetContractAsync for GET requests without ID
• PostContractAsync for POST requests without ID
• GetContractAsync for GET requests with ID (method overload)
• PostContractAsync for POST requests with ID (method overload)
• DeleteContractAsync for DELETE requests with ID

At the moment I am just renaming the methods manually.

Is it possible to configure NSwag to generated these method names?

(Or is there an alternative tool that will give me this result?)

Answer 1

You can implement and provide an own IOperationNameGenerator:

https://github.com/RSuter/NSwag/blob/master/src/NSwag.CodeGeneration/OperationNameGenerators/IOperationNameGenerator.cs

Another option would be to preprocess the spec and change the “operationId”s to the form “controller_operation” (simple console app based on the NSwag.Core package)