/
kernel_dtk_reconciler.go
69 lines (56 loc) · 2.09 KB
/
kernel_dtk_reconciler.go
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package controllers
import (
"context"
"fmt"
"regexp"
"strings"
"github.com/rh-ecosystem-edge/kernel-module-management/internal/filter"
"github.com/rh-ecosystem-edge/kernel-module-management/internal/syncronizedmap"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/types"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/log"
)
//+kubebuilder:rbac:groups="core",resources=nodes,verbs=get;list;watch
const (
KernelDTKReconcilerName = "KernelDTK"
)
// We expect an osImageVersion of the form 411.86.202210072320-0 for example
var osVersionRegexp = regexp.MustCompile(`\d+\.\d+\.\d+\-\d`)
type KernelDTKReconciler struct {
client client.Client
kernelOsDtkMapping syncronizedmap.KernelOsDtkMapping
}
func NewKernelDTKReconciler(client client.Client, kernelOsDtkMapping syncronizedmap.KernelOsDtkMapping) *KernelDTKReconciler {
return &KernelDTKReconciler{
client: client,
kernelOsDtkMapping: kernelOsDtkMapping,
}
}
func (r *KernelDTKReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
node := v1.Node{}
logger := log.FromContext(ctx)
if err := r.client.Get(ctx, types.NamespacedName{Name: req.Name}, &node); err != nil {
return ctrl.Result{}, fmt.Errorf("could not get node: %v", err)
}
kernelVersion := strings.TrimSuffix(node.Status.NodeInfo.KernelVersion, "+")
osImageVersion := osVersionRegexp.FindString(node.Status.NodeInfo.OSImage)
if osImageVersion == "" {
return ctrl.Result{}, fmt.Errorf("could not get node %s osImageVersion", node.Name)
}
r.kernelOsDtkMapping.SetNodeInfo(kernelVersion, osImageVersion)
logger.Info("registered node info mapping", "kernelVersion", kernelVersion, "osImageVersion", osImageVersion)
return ctrl.Result{}, nil
}
// SetupWithManager sets up the controller with the Manager.
func (r *KernelDTKReconciler) SetupWithManager(mgr ctrl.Manager) error {
return ctrl.
NewControllerManagedBy(mgr).
Named(KernelDTKReconcilerName).
For(&v1.Node{}).
WithEventFilter(
filter.KernelDTKReconcilerPredicate(),
).
Complete(r)
}