package errdefs // import "github.com/docker/docker/errdefs" type causer interface { Cause() error } func getImplementer(err error) error { switch e := err.(type) { case ErrNotFound, ErrInvalidParameter, ErrConflict, ErrUnauthorized, ErrUnavailable, ErrForbidden, ErrSystem, ErrNotModified, ErrAlreadyExists, ErrNotImplemented, ErrCancelled, ErrDeadline, ErrDataLoss, ErrUnknown: return err case causer: return getImplementer(e.Cause()) default: return err } } // IsNotFound returns if the passed in error is an ErrNotFound func IsNotFound(err error) bool { _, ok := getImplementer(err).(ErrNotFound) return ok } // IsInvalidParameter returns if the passed in error is an ErrInvalidParameter func IsInvalidParameter(err error) bool { _, ok := getImplementer(err).(ErrInvalidParameter) return ok } // IsConflict returns if the passed in error is an ErrConflict func IsConflict(err error) bool { _, ok := getImplementer(err).(ErrConflict) return ok } // IsUnauthorized returns if the the passed in error is an ErrUnauthorized func IsUnauthorized(err error) bool { _, ok := getImplementer(err).(ErrUnauthorized) return ok } // IsUnavailable returns if the passed in error is an ErrUnavailable func IsUnavailable(err error) bool { _, ok := getImplementer(err).(ErrUnavailable) return ok } // IsForbidden returns if the passed in error is an ErrForbidden func IsForbidden(err error) bool { _, ok := getImplementer(err).(ErrForbidden) return ok } // IsSystem returns if the passed in error is an ErrSystem func IsSystem(err error) bool { _, ok := getImplementer(err).(ErrSystem) return ok } // IsNotModified returns if the passed in error is a NotModified error func IsNotModified(err error) bool { _, ok := getImplementer(err).(ErrNotModified) return ok } // IsAlreadyExists returns if the passed in error is a AlreadyExists error func IsAlreadyExists(err error) bool { _, ok := getImplementer(err).(ErrAlreadyExists) return ok } // IsNotImplemented returns if the passed in error is an ErrNotImplemented func IsNotImplemented(err error) bool { _, ok := getImplementer(err).(ErrNotImplemented) return ok } // IsUnknown returns if the passed in error is an ErrUnknown func IsUnknown(err error) bool { _, ok := getImplementer(err).(ErrUnknown) return ok } // IsCancelled returns if the passed in error is an ErrCancelled func IsCancelled(err error) bool { _, ok := getImplementer(err).(ErrCancelled) return ok } // IsDeadline returns if the passed in error is an ErrDeadline func IsDeadline(err error) bool { _, ok := getImplementer(err).(ErrDeadline) return ok } // IsDataLoss returns if the passed in error is an ErrDataLoss func IsDataLoss(err error) bool { _, ok := getImplementer(err).(ErrDataLoss) return ok }