mirror of
https://github.com/grafana/grafana.git
synced 2025-02-16 18:34:52 -06:00
105 lines
2.9 KiB
Go
105 lines
2.9 KiB
Go
//go:build ignore
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// +build ignore
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//go:generate go run gen.go
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package main
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import (
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"fmt"
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"os"
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"path/filepath"
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"cuelang.org/go/cue/cuecontext"
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"cuelang.org/go/cue/load"
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"github.com/grafana/cuetsy"
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gcgen "github.com/grafana/grafana/pkg/codegen"
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)
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const sep = string(filepath.Separator)
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var tsroot, cmroot, groot string
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func init() {
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cwd, err := os.Getwd()
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if err != nil {
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fmt.Fprintf(os.Stderr, "could not get working directory: %s", err)
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os.Exit(1)
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}
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// TODO this binds us to only having coremodels in a single directory. If we need more, compgen is the way
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groot = filepath.Dir(filepath.Dir(filepath.Dir(cwd))) // the working dir is <grafana_dir>/pkg/framework/coremodel. Going up 3 dirs we get the grafana root
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cmroot = filepath.Join(groot, "pkg", "coremodel")
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tsroot = filepath.Join(groot, "packages", "grafana-schema", "src")
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}
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// Generate Go and Typescript implementations for all coremodels, and populate the
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// coremodel static registry.
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func main() {
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if len(os.Args) > 1 {
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fmt.Fprintf(os.Stderr, "coremodel code generator does not currently accept any arguments\n, got %q", os.Args)
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os.Exit(1)
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}
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wd := gcgen.NewWriteDiffer()
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// TODO generating these is here temporarily until we make a more permanent home
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wdsh, err := genSharedSchemas(groot)
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if err != nil {
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fmt.Fprintf(os.Stderr, "TS gen error for shared schemas in %s: %w", filepath.Join(groot, "packages", "grafana-schema", "src", "schema"), err)
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os.Exit(1)
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}
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wd.Merge(wdsh)
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if _, set := os.LookupEnv("CODEGEN_VERIFY"); set {
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err = wd.Verify()
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if err != nil {
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fmt.Fprintf(os.Stderr, "generated code is not up to date:\n%s\nrun `make gen-cue` to regenerate\n\n", err)
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os.Exit(1)
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}
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} else {
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err = wd.Write()
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if err != nil {
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fmt.Fprintf(os.Stderr, "error while writing generated code to disk:\n%s\n", err)
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os.Exit(1)
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}
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}
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}
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func genSharedSchemas(groot string) (gcgen.WriteDiffer, error) {
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abspath := filepath.Join(groot, "packages", "grafana-schema", "src", "schema")
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cfg := &load.Config{
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ModuleRoot: groot,
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Module: "github.com/grafana/grafana",
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Dir: abspath,
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}
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bi := load.Instances(nil, cfg)
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if len(bi) > 1 {
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return nil, fmt.Errorf("loading CUE files in %s resulted in more than one instance", abspath)
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}
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ctx := cuecontext.New()
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v := ctx.BuildInstance(bi[0])
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if v.Err() != nil {
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return nil, fmt.Errorf("errors while building CUE in %s: %s", abspath, v.Err())
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}
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b, err := cuetsy.Generate(v, cuetsy.Config{
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Export: true,
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})
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if err != nil {
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return nil, fmt.Errorf("failed to generate TS: %w", err)
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}
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wd := gcgen.NewWriteDiffer()
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wd[filepath.Join(abspath, "mudball.gen.ts")] = append([]byte(`//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~
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// This file is autogenerated. DO NOT EDIT.
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//
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// To regenerate, run "make gen-cue" from the repository root.
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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`), b...)
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return wd, nil
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}
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