talos/pkg/machinery/resources/network/hostname_spec.go
Andrey Smirnov 753a82188f
refactor: move pkg/resources to machinery
Fixes #4420

No functional changes, just moving packages around.

Signed-off-by: Andrey Smirnov <andrey.smirnov@talos-systems.com>
2021-11-15 19:50:35 +03:00

119 lines
2.9 KiB
Go

// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
package network
import (
"fmt"
"strings"
"github.com/cosi-project/runtime/pkg/resource"
"github.com/cosi-project/runtime/pkg/resource/meta"
)
// HostnameSpecType is type of HostnameSpec resource.
const HostnameSpecType = resource.Type("HostnameSpecs.net.talos.dev")
// HostnameSpec resource holds node hostname.
type HostnameSpec struct {
md resource.Metadata
spec HostnameSpecSpec
}
// HostnameID is the ID of the singleton instance.
const HostnameID resource.ID = "hostname"
// HostnameSpecSpec describes node nostname.
type HostnameSpecSpec struct {
Hostname string `yaml:"hostname"`
Domainname string `yaml:"domainname"`
ConfigLayer ConfigLayer `yaml:"layer"`
}
// Validate the hostname.
func (spec *HostnameSpecSpec) Validate() error {
lenHostname := len(spec.Hostname)
if lenHostname == 0 || lenHostname > 63 {
return fmt.Errorf("invalid hostname %q", spec.Hostname)
}
if len(spec.FQDN()) > 253 {
return fmt.Errorf("fqdn is too long: %d", len(spec.FQDN()))
}
return nil
}
// FQDN returns the fully-qualified domain name.
func (spec *HostnameSpecSpec) FQDN() string {
if spec.Domainname == "" {
return spec.Hostname
}
return spec.Hostname + "." + spec.Domainname
}
// ParseFQDN into parts and validate it.
func (spec *HostnameSpecSpec) ParseFQDN(fqdn string) error {
parts := strings.SplitN(fqdn, ".", 2)
spec.Hostname = parts[0]
if len(parts) > 1 {
spec.Domainname = parts[1]
}
return spec.Validate()
}
// NewHostnameSpec initializes a HostnameSpec resource.
func NewHostnameSpec(namespace resource.Namespace, id resource.ID) *HostnameSpec {
r := &HostnameSpec{
md: resource.NewMetadata(namespace, HostnameSpecType, id, resource.VersionUndefined),
spec: HostnameSpecSpec{},
}
r.md.BumpVersion()
return r
}
// Metadata implements resource.Resource.
func (r *HostnameSpec) Metadata() *resource.Metadata {
return &r.md
}
// Spec implements resource.Resource.
func (r *HostnameSpec) Spec() interface{} {
return r.spec
}
func (r *HostnameSpec) String() string {
return fmt.Sprintf("network.HostnameSpec(%q)", r.md.ID())
}
// DeepCopy implements resource.Resource.
func (r *HostnameSpec) DeepCopy() resource.Resource {
return &HostnameSpec{
md: r.md,
spec: r.spec,
}
}
// ResourceDefinition implements meta.ResourceDefinitionProvider interface.
func (r *HostnameSpec) ResourceDefinition() meta.ResourceDefinitionSpec {
return meta.ResourceDefinitionSpec{
Type: HostnameSpecType,
Aliases: []resource.Type{},
DefaultNamespace: NamespaceName,
PrintColumns: []meta.PrintColumn{},
}
}
// TypedSpec allows to access the Spec with the proper type.
func (r *HostnameSpec) TypedSpec() *HostnameSpecSpec {
return &r.spec
}