virtual-kubelet controller integration (#130)

* Virtual kubelet controller integration Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com> * Add k3k-kubelet image to the release workflow Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com> * Add k3k-kubelet image to the release workflow Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com> * Fix build/release workflow Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com> * Remove pkg directory in k3k-kubelet Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com> * rename Type to Config Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com> * Move the kubelet and config outside of pkg Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com> * fix comments Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com> * Fix naming throughout the package Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com> * Fix comments Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com> * more fixes to naming Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com> * fixes Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com> * fixes Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com> * fixes Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com> * fixes Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com> --------- Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com>
2026-05-06 01:16:52 +00:00 · 2024-10-21 22:54:08 +03:00
parent bf1fe2a71c
commit d19f0f9ca6
36 changed files with 1252 additions and 837 deletions
--- a/pkg/controller/controller.go
+++ b/pkg/controller/controller.go
@@ -0,0 +1,96 @@
+package controller
+
+import (
+	"context"
+	"crypto/sha256"
+	"encoding/hex"
+	"strings"
+	"time"
+
+	"github.com/rancher/k3k/pkg/apis/k3k.io/v1alpha1"
+	v1 "k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/util/wait"
+	"k8s.io/klog"
+	ctrlruntimeclient "sigs.k8s.io/controller-runtime/pkg/client"
+)
+
+const (
+	namePrefix      = "k3k"
+	k3SImageName    = "rancher/k3s"
+	AdminCommonName = "system:admin"
+)
+
+// Backoff is the cluster creation duration backoff
+var Backoff = wait.Backoff{
+	Steps:    5,
+	Duration: 5 * time.Second,
+	Factor:   2,
+	Jitter:   0.1,
+}
+
+func K3SImage(cluster *v1alpha1.Cluster) string {
+	return k3SImageName + ":" + cluster.Spec.Version
+}
+
+func LogAndReturnErr(errString string, err error) error {
+	klog.Errorf("%s: %v", errString, err)
+	return err
+}
+
+func nodeAddress(node *v1.Node) string {
+	var externalIP string
+	var internalIP string
+
+	for _, ip := range node.Status.Addresses {
+		if ip.Type == "ExternalIP" && ip.Address != "" {
+			externalIP = ip.Address
+			break
+		}
+		if ip.Type == "InternalIP" && ip.Address != "" {
+			internalIP = ip.Address
+		}
+	}
+	if externalIP != "" {
+		return externalIP
+	}
+
+	return internalIP
+}
+
+// return all the nodes external addresses, if not found then return internal addresses
+func Addresses(ctx context.Context, client ctrlruntimeclient.Client) ([]string, error) {
+	var nodeList v1.NodeList
+	if err := client.List(ctx, &nodeList); err != nil {
+		return nil, err
+	}
+
+	addresses := make([]string, len(nodeList.Items))
+	for _, node := range nodeList.Items {
+		addresses = append(addresses, nodeAddress(&node))
+	}
+
+	return addresses, nil
+}
+
+// SafeConcatNameWithPrefix runs the SafeConcatName with extra prefix.
+func SafeConcatNameWithPrefix(name ...string) string {
+	return SafeConcatName(append([]string{namePrefix}, name...)...)
+}
+
+// SafeConcatName concatenates the given strings and ensures the returned name is under 64 characters
+// by cutting the string off at 57 characters and setting the last 6 with an encoded version of the concatenated string.
+func SafeConcatName(name ...string) string {
+	fullPath := strings.Join(name, "-")
+	if len(fullPath) < 64 {
+		return fullPath
+	}
+	digest := sha256.Sum256([]byte(fullPath))
+	// since we cut the string in the middle, the last char may not be compatible with what is expected in k8s
+	// we are checking and if necessary removing the last char
+	c := fullPath[56]
+	if 'a' <= c && c <= 'z' || '0' <= c && c <= '9' {
+		return fullPath[0:57] + "-" + hex.EncodeToString(digest[0:])[0:5]
+	}
+
+	return fullPath[0:56] + "-" + hex.EncodeToString(digest[0:])[0:6]
+}