package main import ( "fmt" "io" "os" "path" "sort" "strconv" "strings" "github.com/BurntSushi/toml" "github.com/containous/traefik/v2/pkg/config/env" "github.com/containous/traefik/v2/pkg/config/flag" "github.com/containous/traefik/v2/pkg/config/generator" "github.com/containous/traefik/v2/pkg/config/parser" "github.com/containous/traefik/v2/pkg/config/static" "github.com/containous/traefik/v2/pkg/log" ) func main() { genStaticConfDoc("./docs/content/reference/static-configuration/env-ref.md", "", env.Encode) genStaticConfDoc("./docs/content/reference/static-configuration/cli-ref.md", "--", flag.Encode) genKVDynConfDoc("./docs/content/reference/dynamic-configuration/kv-ref.md") } func genStaticConfDoc(outputFile, prefix string, encodeFn func(interface{}) ([]parser.Flat, error)) { logger := log.WithoutContext().WithField("file", outputFile) element := &static.Configuration{} generator.Generate(element) flats, err := encodeFn(element) if err != nil { logger.Fatal(err) } err = os.RemoveAll(outputFile) if err != nil { logger.Fatal(err) } file, err := os.OpenFile(outputFile, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0o666) if err != nil { logger.Fatal(err) } defer file.Close() w := errWriter{w: file} w.writeln(``) w.writeln() for i, flat := range flats { w.writeln("`" + prefix + strings.ReplaceAll(flat.Name, "[0]", "[n]") + "`: ") if flat.Default == "" { w.writeln(flat.Description) } else { w.writeln(flat.Description + " (Default: ```" + flat.Default + "```)") } if i < len(flats)-1 { w.writeln() } } if w.err != nil { logger.Fatal(err) } } type errWriter struct { w io.Writer err error } func (ew *errWriter) writeln(a ...interface{}) { if ew.err != nil { return } _, ew.err = fmt.Fprintln(ew.w, a...) } func genKVDynConfDoc(outputFile string) { dynConfPath := "./docs/content/reference/dynamic-configuration/file.toml" conf := map[string]interface{}{} _, err := toml.DecodeFile(dynConfPath, &conf) if err != nil { log.Fatal(err) } file, err := os.Create(outputFile) if err != nil { log.Fatal(err) } store := storeWriter{data: map[string]string{}} c := client{store: store} err = c.load("traefik", conf) if err != nil { log.Fatal(err) } var keys []string for k := range store.data { keys = append(keys, k) } sort.Strings(keys) for _, k := range keys { _, _ = fmt.Fprintf(file, "| `%s` | `%s` |\n", k, store.data[k]) } } type storeWriter struct { data map[string]string } func (f storeWriter) Put(key string, value []byte, options []string) error { f.data[key] = string(value) return nil } type client struct { store storeWriter } func (c client) load(parentKey string, conf map[string]interface{}) error { for k, v := range conf { switch entry := v.(type) { case map[string]interface{}: key := path.Join(parentKey, k) if len(entry) == 0 { err := c.store.Put(key, nil, nil) if err != nil { return err } } else { err := c.load(key, entry) if err != nil { return err } } case []map[string]interface{}: for i, o := range entry { key := path.Join(parentKey, k, strconv.Itoa(i)) if err := c.load(key, o); err != nil { return err } } case []interface{}: for i, o := range entry { key := path.Join(parentKey, k, strconv.Itoa(i)) err := c.store.Put(key, []byte(fmt.Sprintf("%v", o)), nil) if err != nil { return err } } default: key := path.Join(parentKey, k) err := c.store.Put(key, []byte(fmt.Sprintf("%v", v)), nil) if err != nil { return err } } } return nil }