/
core.go
213 lines (176 loc) · 5.98 KB
/
core.go
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package assets
import (
"context"
"fmt"
embedded "github.com/openshift/microshift/assets"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/serializer"
coreclientv1 "k8s.io/client-go/kubernetes/typed/core/v1"
"k8s.io/client-go/rest"
"k8s.io/client-go/tools/clientcmd"
"k8s.io/klog/v2"
"github.com/openshift/library-go/pkg/operator/resource/resourceapply"
)
var (
coreScheme = runtime.NewScheme()
coreCodecs = serializer.NewCodecFactory(coreScheme)
)
func init() {
if err := corev1.AddToScheme(coreScheme); err != nil {
panic(err)
}
}
func coreClient(kubeconfigPath string) *coreclientv1.CoreV1Client {
restConfig, err := clientcmd.BuildConfigFromFlags("", kubeconfigPath)
if err != nil {
panic(err)
}
return coreclientv1.NewForConfigOrDie(rest.AddUserAgent(restConfig, "core-agent"))
}
func readCore[T any](objBytes []byte, render RenderFunc, params RenderParams) T {
var err error
if render != nil {
objBytes, err = render(objBytes, params)
if err != nil {
panic(err)
}
}
obj, err := runtime.Decode(coreCodecs.UniversalDecoder(corev1.SchemeGroupVersion), objBytes)
if err != nil {
panic(err)
}
return obj.(T)
}
type nsApplier struct {
Client *coreclientv1.CoreV1Client
ns *corev1.Namespace
}
func (ns *nsApplier) Read(objBytes []byte, render RenderFunc, params RenderParams) {
ns.ns = readCore[*corev1.Namespace](objBytes, render, params)
}
func (ns *nsApplier) Handle(ctx context.Context) error {
_, _, err := resourceapply.ApplyNamespace(ctx, ns.Client, assetsEventRecorder, ns.ns)
return err
}
type nsDeleter struct {
Client *coreclientv1.CoreV1Client
ns *corev1.Namespace
}
func (ns *nsDeleter) Read(objBytes []byte, render RenderFunc, params RenderParams) {
ns.ns = readCore[*corev1.Namespace](objBytes, render, params)
}
func (ns *nsDeleter) Handle(ctx context.Context) error {
_, _, err := resourceapply.DeleteNamespace(ctx, ns.Client, assetsEventRecorder, ns.ns)
return err
}
type secretApplier struct {
Client *coreclientv1.CoreV1Client
secret *corev1.Secret
}
func (secret *secretApplier) Read(objBytes []byte, render RenderFunc, params RenderParams) {
secret.secret = readCore[*corev1.Secret](objBytes, render, params)
}
func (secret *secretApplier) Handle(ctx context.Context) error {
_, _, err := resourceapply.ApplySecret(ctx, secret.Client, assetsEventRecorder, secret.secret)
return err
}
type svcApplier struct {
Client *coreclientv1.CoreV1Client
svc *corev1.Service
}
func (svc *svcApplier) Read(objBytes []byte, render RenderFunc, params RenderParams) {
svc.svc = readCore[*corev1.Service](objBytes, render, params)
}
func (svc *svcApplier) Handle(ctx context.Context) error {
_, _, err := resourceapply.ApplyService(ctx, svc.Client, assetsEventRecorder, svc.svc)
return err
}
type saApplier struct {
Client *coreclientv1.CoreV1Client
sa *corev1.ServiceAccount
}
func (sa *saApplier) Read(objBytes []byte, render RenderFunc, params RenderParams) {
sa.sa = readCore[*corev1.ServiceAccount](objBytes, render, params)
}
func (sa *saApplier) Handle(ctx context.Context) error {
_, _, err := resourceapply.ApplyServiceAccount(ctx, sa.Client, assetsEventRecorder, sa.sa)
return err
}
type cmApplier struct {
Client *coreclientv1.CoreV1Client
cm *corev1.ConfigMap
}
func (cm *cmApplier) Read(objBytes []byte, render RenderFunc, params RenderParams) {
cm.cm = readCore[*corev1.ConfigMap](objBytes, render, params)
}
func (cm *cmApplier) Handle(ctx context.Context) error {
_, _, err := resourceapply.ApplyConfigMap(ctx, cm.Client, assetsEventRecorder, cm.cm)
return err
}
func handleCore(ctx context.Context, cores []string, handler resourceHandler, render RenderFunc, params RenderParams) error {
lock.Lock()
defer lock.Unlock()
for _, core := range cores {
klog.Infof("Applying corev1 api %s", core)
objBytes, err := embedded.Asset(core)
if err != nil {
return fmt.Errorf("error getting asset %s: %v", core, err)
}
handler.Read(objBytes, render, params)
if err := handler.Handle(ctx); err != nil {
klog.Warningf("Failed to apply corev1 api %s: %v", core, err)
return err
}
}
return nil
}
func ApplyNamespaces(ctx context.Context, cores []string, kubeconfigPath string) error {
ns := &nsApplier{}
ns.Client = coreClient(kubeconfigPath)
return handleCore(ctx, cores, ns, nil, nil)
}
func DeleteNamespaces(ctx context.Context, cores []string, kubeconfigPath string) error {
ns := &nsDeleter{}
ns.Client = coreClient(kubeconfigPath)
return handleCore(ctx, cores, ns, nil, nil)
}
func ApplyServices(ctx context.Context, cores []string, render RenderFunc, params RenderParams, kubeconfigPath string) error {
svc := &svcApplier{}
svc.Client = coreClient(kubeconfigPath)
return handleCore(ctx, cores, svc, render, params)
}
func ApplyServiceAccounts(ctx context.Context, cores []string, kubeconfigPath string) error {
sa := &saApplier{}
sa.Client = coreClient(kubeconfigPath)
return handleCore(ctx, cores, sa, nil, nil)
}
func ApplyConfigMaps(ctx context.Context, cores []string, render RenderFunc, params RenderParams, kubeconfigPath string) error {
cm := &cmApplier{}
cm.Client = coreClient(kubeconfigPath)
return handleCore(ctx, cores, cm, render, params)
}
func ApplyConfigMapWithData(ctx context.Context, cmPath string, data map[string]string, kubeconfigPath string) error {
cm := &cmApplier{}
cm.Client = coreClient(kubeconfigPath)
cmBytes, err := embedded.Asset(cmPath)
if err != nil {
return err
}
cm.Read(cmBytes, nil, nil)
cm.cm.Data = data
_, _, err = resourceapply.ApplyConfigMap(ctx, cm.Client, assetsEventRecorder, cm.cm)
return err
}
func ApplySecretWithData(ctx context.Context, secretPath string, data map[string][]byte, kubeconfigPath string) error {
secret := &secretApplier{}
secret.Client = coreClient(kubeconfigPath)
secretBytes, err := embedded.Asset(secretPath)
if err != nil {
return err
}
secret.Read(secretBytes, nil, nil)
secret.secret.Data = data
_, _, err = resourceapply.ApplySecret(ctx, secret.Client, assetsEventRecorder, secret.secret)
return err
}