grafana/public/app/plugins/gen.go

// go:build ignore
//go:build ignore
// +build ignore

package main

import (
	"errors"
	"fmt"
	"os"
	"path/filepath"

	"cuelang.org/go/cue/cuecontext"
	"github.com/grafana/grafana/pkg/codegen"
)

// Generate TypeScript for all plugin models.cue
func main() {
	if len(os.Args) > 1 {
		fmt.Fprintf(os.Stderr, "plugin thema code generator does not currently accept any arguments\n, got %q", os.Args)
		os.Exit(1)
	}

	cwd, err := os.Getwd()
	if err != nil {
		fmt.Fprintf(os.Stderr, "could not get working directory: %s", err)
		os.Exit(1)
	}

	var find func(path string) (string, error)
	find = func(path string) (string, error) {
		parent := filepath.Dir(path)
		if parent == path {
			return "", errors.New("grafana root directory could not be found")
		}
		fp := filepath.Join(path, "go.mod")
		if _, err := os.Stat(fp); err == nil {
			return path, nil
		}
		return find(parent)
	}
	groot, err := find(cwd)
	if err != nil {
		fmt.Fprint(os.Stderr, err)
		os.Exit(1)
	}

	wd, err := codegen.CuetsifyPlugins(cuecontext.New(), groot)
	if err != nil {
		fmt.Fprintf(os.Stderr, "error while generating code:\n%s\n", err)
		os.Exit(1)
	}

	if _, set := os.LookupEnv("CODEGEN_VERIFY"); set {
		err = wd.Verify()
		if err != nil {
			fmt.Fprintf(os.Stderr, "generated code is out of sync with inputs:\n%s\nrun `make gen-cue` to regenerate\n\n", err)
			os.Exit(1)
		}
	} else {
		err = wd.Write()
		if err != nil {
			fmt.Fprintf(os.Stderr, "error while writing generated code to disk:\n%s\n", err)
			os.Exit(1)
		}
	}
}