Uses OpenAPI client and server code generator oapi-codegen The generator supports both Chi and Echo but just Echo is used in this sample.
For mac oapi-codegen is available also via my Homebrew tap:
brew install tanelmae/brew/oapi-codegen
Generate server, types and spec from OpenAPI yaml:
./codegen.sh
Generated code lives under pkg/gen
Under internal/servce there is implementation for the generated ServerInterface interface and that is where the "business logic" is defined.
Glue to tie the genegrated code and business logic is in main.go. This is not just to be able to write bolierplate code. It allows setting up any Echo middleware, adding support for extra content types (see the example) or other needed customization.
go run main.go
Get with query parameter:
curl http://localhost:8080/hello?name=Bill
Get with parameter in path:
curl http://localhost:8080/hello/tim
Post request:
curl --request POST --header "Content-Type: application/json" --data '{"name":"Yoda"}' http://localhost:8080/upload
Invalid request
curl http://localhost:8080/hello?ss=ee
Upload image
curl --request POST --header 'Content-Type: image/jpeg' --data-binary @img/moon.jpg http://localhost:8080/image
curl --request POST --header 'Content-Type: image/png' --data-binary @img/space.png http://localhost:8080/image