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error.go
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error.go
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// Package krberror provides error type and functions for gokrb5.
package krberror
import (
"fmt"
"strings"
)
// Error type descriptions.
const (
separator = " < "
EncodingError = "Encoding_Error"
NetworkingError = "Networking_Error"
DecryptingError = "Decrypting_Error"
EncryptingError = "Encrypting_Error"
ChksumError = "Checksum_Error"
KRBMsgError = "KRBMessage_Handling_Error"
ConfigError = "Configuration_Error"
KDCError = "KDC_Error"
)
// Krberror is an error type for gokrb5
type Krberror struct {
RootCause string
EText []string
}
// Error function to implement the error interface.
func (e Krberror) Error() string {
return fmt.Sprintf("[Root cause: %s] ", e.RootCause) + strings.Join(e.EText, separator)
}
// Add another error statement to the error.
func (e *Krberror) Add(et string, s string) {
e.EText = append([]string{fmt.Sprintf("%s: %s", et, s)}, e.EText...)
}
// New creates a new instance of Krberror.
func New(et, s string) Krberror {
return Krberror{
RootCause: et,
EText: []string{s},
}
}
// Errorf appends to or creates a new Krberror.
func Errorf(err error, et, format string, a ...interface{}) Krberror {
if e, ok := err.(Krberror); ok {
e.Add(et, fmt.Sprintf(format, a...))
return e
}
return NewErrorf(et, format+": %s", append(a, err)...)
}
// NewErrorf creates a new Krberror from a formatted string.
func NewErrorf(et, format string, a ...interface{}) Krberror {
var s string
if len(a) > 0 {
s = fmt.Sprintf("%s: %s", et, fmt.Sprintf(format, a...))
} else {
s = fmt.Sprintf("%s: %s", et, format)
}
return Krberror{
RootCause: et,
EText: []string{s},
}
}