open-consul/acl/errors.go

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package acl
import (
"errors"
"strings"
)
// These error constants define the standard ACL error types. The values
// must not be changed since the error values are sent via RPC calls
// from older clients and may not have the correct type.
const (
errNotFound = "ACL not found"
errRootDenied = "Cannot resolve root ACL"
errDisabled = "ACL support disabled"
errPermissionDenied = "Permission denied"
)
var (
// ErrNotFound indicates there is no matching ACL.
ErrNotFound = errors.New(errNotFound)
// ErrRootDenied is returned when attempting to resolve a root ACL.
ErrRootDenied = errors.New(errRootDenied)
// ErrDisabled is returned when ACL changes are not permitted since
// they are disabled.
ErrDisabled = errors.New(errDisabled)
// ErrPermissionDenied is returned when an ACL based rejection
// happens.
ErrPermissionDenied = PermissionDeniedError{}
)
// IsErrNotFound checks if the given error message is comparable to
// ErrNotFound.
func IsErrNotFound(err error) bool {
return err != nil && strings.Contains(err.Error(), errNotFound)
}
// IsErrRootDenied checks if the given error message is comparable to
// ErrRootDenied.
func IsErrRootDenied(err error) bool {
return err != nil && strings.Contains(err.Error(), errRootDenied)
}
// IsErrDisabled checks if the given error message is comparable to
// ErrDisabled.
func IsErrDisabled(err error) bool {
return err != nil && strings.Contains(err.Error(), errDisabled)
}
// IsErrPermissionDenied checks if the given error message is comparable
// to ErrPermissionDenied.
func IsErrPermissionDenied(err error) bool {
return err != nil && strings.Contains(err.Error(), errPermissionDenied)
}
type PermissionDeniedError struct {
Cause string
}
func (e PermissionDeniedError) Error() string {
if e.Cause != "" {
return errPermissionDenied + ": " + e.Cause
}
return errPermissionDenied
}