Bootstrap

The idea is to use openapi code generator for rust to generate openapi specification library. To do so, I started with an openapi specification with

{
    "openapi": "3.1.0",
    "info": {
        "version": "3.1.0",
        "title": "openapi"
    },
    "components": {
        "schemas": {}
    }
}

Build OpenAPI In OpenAPI

1. Download json-schema of OpenAPI v3.1
2. Copy everything from schema.$def into the above OpenAPI json inside components.schemas
3. Insert openapi definition into components.schemas
4. Replace every #/$defs/ with #/componenst/schemas
5. Remove every "$ref": "#/$defs/specification-extensions". We don't need them now.
6. Remove every oneOf. We will add them later in the generated code.

See the result file here.

Generate Code

npx -y @openapitools/openapi-generator-cli generate -i openapi-in-openapi.json -g rust -o /tmp/openapi && mv /tmp/openapi/src/models .

Implement The Remaining Part

Generated code is not complete, and don't generate these structs. We will create them by hand :-) .

path-item-or-reference
parameter-or-reference
request-body-or-reference
response-or-reference
callbacks-or-reference
example-or-reference
link-or-reference
header-or-reference
security-scheme-or-reference