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// Copyright (c) Tailscale Inc & contributors
// SPDX-License-Identifier: BSD-3-Clause
//go:build !plan9
// Package kube contains types and utilities for the Tailscale Kubernetes Operator.
package kube
import (
"fmt"
"tailscale.com/tailcfg"
)
const (
Alpha1Version = "v1alpha1"
DNSRecordsCMName = "dnsrecords"
DNSRecordsCMKey = "records.json"
)
type Records struct {
// Version is the version of this Records configuration. Version is
// written by the operator, i.e when it first populates the Records.
// k8s-nameserver must verify that it knows how to parse a given
// version.
Version string `json:"version"`
// IP4 contains a mapping of DNS names to IPv4 address(es).
IP4 map[string][]string `json:"ip4"`
// IP6 contains a mapping of DNS names to IPv6 address(es).
// This field is optional and will be omitted from JSON if empty.
// It enables dual-stack DNS support in Kubernetes clusters.
// +optional
IP6 map[string][]string `json:"ip6,omitempty"`
}
// TailscaledConfigFileName returns a tailscaled config file name in
// format expected by containerboot for the given CapVer.
func TailscaledConfigFileName(cap tailcfg.CapabilityVersion) string {
return fmt.Sprintf("cap-%v.hujson", cap)
}
// CapVerFromFileName parses the capability version from a tailscaled
// config file name previously generated by TailscaledConfigFileNameForCap.
func CapVerFromFileName(name string) (tailcfg.CapabilityVersion, error) {
if name == "tailscaled" {
return 0, nil
}
var cap tailcfg.CapabilityVersion
_, err := fmt.Sscanf(name, "cap-%d.hujson", &cap)
return cap, err
}
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