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util.go
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util.go
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package k8sfactory
import (
"path/filepath"
appsv1 "k8s.io/api/apps/v1"
batchv1 "k8s.io/api/batch/v1"
corev1 "k8s.io/api/core/v1"
networkingv1 "k8s.io/api/networking/v1"
policyv1 "k8s.io/api/policy/v1"
rbacv1 "k8s.io/api/rbac/v1"
"k8s.io/apimachinery/pkg/runtime"
"go.f110.dev/mono/go/varptr"
)
type Trait func(object any)
func Factory(base any, traits ...Trait) any {
if base == nil {
return nil
}
switch v := base.(type) {
case *corev1.Pod:
p := PodFactory(v, traits...)
return p
case *corev1.Container:
p := ContainerFactory(v, traits...)
return p
case *corev1.ServiceAccount:
p := ServiceAccountFactory(v, traits...)
return p
case *corev1.Service:
p := ServiceFactory(v, traits...)
return p
case *corev1.Secret:
p := SecretFactory(v, traits...)
return p
case *corev1.ConfigMap:
p := ConfigMapFactory(v, traits...)
return p
case *corev1.Event:
p := EventFactory(v, traits...)
return p
case *appsv1.Deployment:
p := DeploymentFactory(v, traits...)
return p
case *batchv1.Job:
p := JobFactory(v, traits...)
return p
case *batchv1.CronJob:
p := CronJobFactory(v, traits...)
return p
case *networkingv1.IngressClass:
p := IngressClassFactory(v, traits...)
return p
case *networkingv1.Ingress:
p := IngressFactory(v, traits...)
return p
case *networkingv1.IngressRule:
p := IngressRuleFactory(v, traits...)
return p
case *networkingv1.HTTPIngressPath:
p := IngressPathFactory(v, traits...)
return p
case *policyv1.PodDisruptionBudget:
p := PodDisruptionBudgetFactory(v, traits...)
return p
case *rbacv1.Role:
p := RoleFactory(v, traits...)
return p
case *rbacv1.RoleBinding:
p := RoleBindingFactory(v, traits...)
return p
default:
return nil
}
}
func OnContainer(name string, t ...Trait) Trait {
var fn Trait
fn = func(object any) {
switch v := object.(type) {
case *corev1.PodSpec:
for i := range v.InitContainers {
con := &v.InitContainers[i]
if con.Name == name {
for _, v := range t {
v(con)
}
break
}
}
for i := range v.Containers {
con := &v.Containers[i]
if con.Name == name {
for _, v := range t {
v(con)
}
break
}
}
case *batchv1.Job:
fn(&v.Spec.Template.Spec)
}
}
return fn
}
type VolumeSource struct {
Mount corev1.VolumeMount
Source corev1.Volume
}
func (s *VolumeSource) PathJoin(elem ...string) string {
return filepath.Join(append([]string{s.Mount.MountPath}, elem...)...)
}
func NewConfigMapVolumeSource(name, path, configMapName string) *VolumeSource {
return &VolumeSource{
Mount: corev1.VolumeMount{
Name: name,
MountPath: path,
},
Source: corev1.Volume{
Name: name,
VolumeSource: corev1.VolumeSource{
ConfigMap: &corev1.ConfigMapVolumeSource{
LocalObjectReference: corev1.LocalObjectReference{
Name: configMapName,
},
},
},
},
}
}
func NewSecretVolumeSource(name, path string, source *corev1.Secret, items ...corev1.KeyToPath) *VolumeSource {
return &VolumeSource{
Mount: corev1.VolumeMount{
Name: name,
MountPath: path,
ReadOnly: true,
},
Source: corev1.Volume{
Name: name,
VolumeSource: corev1.VolumeSource{
Secret: &corev1.SecretVolumeSource{
SecretName: source.Name,
Items: items,
},
},
},
}
}
func NewEmptyDirVolumeSource(name, path string) *VolumeSource {
return &VolumeSource{
Mount: corev1.VolumeMount{
Name: name,
MountPath: path,
},
Source: corev1.Volume{
Name: name,
VolumeSource: corev1.VolumeSource{
EmptyDir: &corev1.EmptyDirVolumeSource{},
},
},
}
}
func NewPersistentVolumeClaimVolumeSource(name, path, pvcName string) *VolumeSource {
return &VolumeSource{
Mount: corev1.VolumeMount{
Name: name,
MountPath: path,
},
Source: corev1.Volume{
Name: name,
VolumeSource: corev1.VolumeSource{
PersistentVolumeClaim: &corev1.PersistentVolumeClaimVolumeSource{
ClaimName: pvcName,
},
},
},
}
}
func NewSecretStoreVolumeSource(name, path string) *VolumeSource {
return &VolumeSource{
Mount: corev1.VolumeMount{
Name: name,
MountPath: path,
ReadOnly: true,
},
Source: corev1.Volume{
Name: name,
VolumeSource: corev1.VolumeSource{
CSI: &corev1.CSIVolumeSource{
Driver: "secrets-store.csi.k8s.io",
ReadOnly: varptr.Ptr(true),
VolumeAttributes: map[string]string{
"secretProviderClass": name,
},
},
},
},
}
}
func setGVK(in runtime.Object, scheme *runtime.Scheme) {
if in.GetObjectKind().GroupVersionKind().Kind == "" {
gvks, unversioned, err := scheme.ObjectKinds(in)
if err == nil && !unversioned && len(gvks) > 0 {
in.GetObjectKind().SetGroupVersionKind(gvks[0])
}
}
}