How to use $ref relative to the root?

[debuggerpk]

Thank you for your awesome work.

I am looking to bump up the version to 4.0 for cdevents for sdk-go.

When I pull the new version and run go run ./tools/generator.go, I get the error

generator: Generating SDK files from templates: tools/templates/*.tmpl and schemas: ./pkg/api/spec/schemas into ./pkg/api
generator: Ignoring folder ./pkg/api/spec/schemas
generator: jsonschema file:///path-to-repo/cdevents/sdk-go/pkg/api/spec/schemas/artifactdeleted.json compilation failed: https://cdevents.dev/schema/links/embeddedlinksarray.json returned status code 404
exit status 1

On close inspection, version 4 has addition "$ref": "/schema/links/embeddedlinksarray.json". I guess since $id is defined as "$id": "https://cdevents.dev/0.4.0/schema/artifact-deleted-event" and the schema is not published, we get the 404 error. Please note that we can find the links folder relative to ./pkg/api/spec/schemas. Is the output Ignoring folder a tell tale?.

How to go about circumventing the aforementioned error.

[santhosh-tekuri]

You can use Compiler.LoadURL to handle this situation.

say you have cloned the schemas git repo into /tmp:

$ cd /tmp
$ git clone https://github.com/cdevents/spec.git

now you can compile schema as follows:

prefix := "https://cdevents.dev/0.4.0/schema/"

c := jsonschema.NewCompiler()
c.LoadURL = func(s string) (io.ReadCloser, error) {
    suffix, ok := strings.CutPrefix(s, prefix)
    if !ok {
        return nil, fmt.Errorf("%s not found", s)
    }
   return os.Open("/tmp/"+suffix)
}
sch, err := c.Compile(prefix+"artifact-deleted-event")

[debuggerpk]

Thank you. Let me try.