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sloproxy
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2.2 kB · 90 lines
Go
at commit e8e39526
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import ( "fmt" "net/http" "strings")
// AuthErrorCode classifies authentication failures.type AuthErrorCode string
const ( AuthErrorCodeNoCredentials AuthErrorCode = "no_credentials" AuthErrorCodeInvalidCredential AuthErrorCode = "invalid_credential" AuthErrorCodeNotHandled AuthErrorCode = "not_handled" AuthErrorCodeInternal AuthErrorCode = "internal_error")
// AuthError carries authentication failure details and HTTP status.type AuthError struct { Code AuthErrorCode Message string StatusCode int Cause error}
func (e *AuthError) Error() string { if e == nil { return "" } message := strings.TrimSpace(e.Message) if message == "" { message = "authentication error" } if e.Cause != nil { return fmt.Sprintf("%s: %v", message, e.Cause) } return message}
func (e *AuthError) Unwrap() error { if e == nil { return nil } return e.Cause}
// HTTPStatusCode returns a safe fallback for missing status codes.func (e *AuthError) HTTPStatusCode() int { if e == nil || e.StatusCode <= 0 { return http.StatusInternalServerError } return e.StatusCode}
func newAuthError(code AuthErrorCode, message string, statusCode int, cause error) *AuthError { return &AuthError{ Code: code, Message: message, StatusCode: statusCode, Cause: cause, }}
func NewNoCredentialsError() *AuthError { return newAuthError(AuthErrorCodeNoCredentials, "Missing API key", http.StatusUnauthorized, nil)}
func NewInvalidCredentialError() *AuthError { return newAuthError(AuthErrorCodeInvalidCredential, "Invalid API key", http.StatusUnauthorized, nil)}
func NewNotHandledError() *AuthError { return newAuthError(AuthErrorCodeNotHandled, "authentication provider did not handle request", 0, nil)}
func NewInternalAuthError(message string, cause error) *AuthError { normalizedMessage := strings.TrimSpace(message) if normalizedMessage == "" { normalizedMessage = "Authentication service error" } return newAuthError(AuthErrorCodeInternal, normalizedMessage, http.StatusInternalServerError, cause)}
func IsAuthErrorCode(authErr *AuthError, code AuthErrorCode) bool { if authErr == nil { return false } return authErr.Code == code}