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error_creator.go
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/
error_creator.go
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//go generate
package main
import (
"flag"
"fmt"
"html/template"
"log"
"os"
"strings"
)
func main() {
errorName := readErrorName()
errorName = validateErrorName(errorName)
data := &Data{
ErrorName: errorName,
}
errorFile := data.createFile("error.go.tmpl")
data.createTemplate("error.go.tmpl", errorFile)
if err := errorFile.Close(); err != nil {
log.Fatal(err)
}
testFile := data.createFile("error_test.go.tmpl")
data.createTemplate("error_test.go.tmpl", testFile)
if err := testFile.Close(); err != nil {
log.Fatal(err)
}
fmt.Print(`
!!!!!
Add status mapping in internal/api/grpc/caos_errors.go
!!!!!`)
}
type Data struct {
ErrorName string
}
func (data *Data) createFile(tmplName string) *os.File {
filename := strings.Replace(tmplName, "error", strings.ToLower(data.ErrorName), 1)
filename = filename[:len(filename)-5]
filePath := fmt.Sprintf("../%s", filename)
file, err := os.Create(filePath)
if err != nil {
log.Fatalf("unable to create file (%s): %v", filePath, err)
}
return file
}
func (data *Data) createTemplate(templateName string, file *os.File) {
tmpl := template.Must(template.New(templateName).ParseFiles(templateName))
if err := tmpl.Execute(file, data); err != nil {
log.Fatal("unable to execute tmpl: ", err)
}
}
func readErrorName() (errorName string) {
flag.StringVar(&errorName, "Name", "", "KeyType of the error (e.g. Internal)")
flag.Parse()
return errorName
}
func validateErrorName(errorName string) string {
if errorName == "" {
log.Fatal("pass argument name")
}
if strings.Contains(errorName, " ") || strings.Contains(errorName, ".") {
log.Fatal("name cannot contain spaces or points")
}
return strings.Title(errorName)
}