Prevent secrets ending up in logs

secrets.go

package main

import "fmt"

type secret string

func (s secret) String() string {
	return "*****"
}

func (s secret) MarshalJSON() ([]byte, error) {	
    return json.Marshal(s.String())
}

func main() {
	s := secret("secretSauce")
	fmt.Println("Secret: ", s)
	
	
	type TestStruct struct {	
          APIToken secret
        }
	
	oops :=  TestStruct{APIToken: secret("secretSauce")}
        b, _ := json.Marshal(oops)
        fmt.Print(string(b))
}