Refactor: Errors to have one custom type that is to be wrapped

- For this an `internal/types` package is created with a custom error type
- This custom error type can give back the cause and traceback of an error

1 files changed, 5 insertions, 2 deletions

diff --git a/internal/util/util.go b/internal/util/util.go
index 4bdd1b5..8dee61e 100644
--- a/internal/util/util.go
+++ b/internal/util/util.go
@@ -2,8 +2,11 @@ package util
 
 import (
 	"crypto/rand"
+	"fmt"
 	"os"
 	"time"
+
+	"github.com/jwijenbergh/eduvpn-common/internal/types"
 )
 
 // Creates a random byteslice of `size`
@@ -11,7 +14,7 @@ func MakeRandomByteSlice(size int) ([]byte, error) {
 	byteSlice := make([]byte, size)
 	_, err := rand.Read(byteSlice)
 	if err != nil {
-		return nil, err
+		return nil, &types.WrappedErrorMessage{Message: "failed reading random", Err: err}
 	}
 	return byteSlice, nil
 }
@@ -24,7 +27,7 @@ func GenerateTimeSeconds() int64 {
 func EnsureDirectory(directory string) error {
 	mkdirErr := os.MkdirAll(directory, os.ModePerm)
 	if mkdirErr != nil {
-		return mkdirErr
+		return &types.WrappedErrorMessage{Message: fmt.Sprintf("failed to create directory %s", directory), Err: mkdirErr}
 	}
 	return nil
 }