/
worker_controller.go
141 lines (120 loc) · 3.36 KB
/
worker_controller.go
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package controllers
import (
"context"
"time"
netconv1alpha1 "github.com/janog-netcon/netcon-problem-management-subsystem/api/v1alpha1"
"github.com/janog-netcon/netcon-problem-management-subsystem/pkg/util"
"go.uber.org/multierr"
coordv1 "k8s.io/api/coordination/v1"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/client-go/tools/record"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/log"
"sigs.k8s.io/controller-runtime/pkg/manager"
)
type WorkerController struct {
client.Client
recorder record.EventRecorder
workerMonitorPeriod time.Duration
}
var _ manager.Runnable = &WorkerController{}
func NewWorkerController(
client client.Client,
workerMonitorPeriod time.Duration,
recorder record.EventRecorder,
) *WorkerController {
return &WorkerController{
Client: client,
workerMonitorPeriod: workerMonitorPeriod,
recorder: recorder,
}
}
//+kubebuilder:rbac:groups=netcon.janog.gr.jp,resources=workers,verbs=get;list;watch
//+kubebuilder:rbac:groups=netcon.janog.gr.jp,resources=workers/status,verbs=get;update;patch
//+kubebuilder:rbac:groups=coordination.k8s.io,resources=leases,verbs=get;list;watch
// Start implements manager.Runnable
func (wc *WorkerController) Start(ctx context.Context) error {
log := log.FromContext(ctx)
ticker := time.NewTicker(wc.workerMonitorPeriod)
for {
select {
case <-ticker.C:
if err := wc.monitorWorkerHealth(ctx); err != nil {
log.Error(err, "failed to monitor some workers")
}
case <-ctx.Done():
return nil
}
ctx.Done()
}
}
func (wc *WorkerController) monitorWorkerHealth(ctx context.Context) error {
workerList := netconv1alpha1.WorkerList{}
if err := wc.List(ctx, &workerList); err != nil {
return err
}
errList := []error{}
for _, worker := range workerList.Items {
lease := coordv1.Lease{}
if err := wc.Get(ctx, types.NamespacedName{
Namespace: "netcon",
Name: worker.Name,
}, &lease); err != nil {
errList = append(errList, err)
continue
}
ready := false
if lease.Spec.RenewTime != nil {
renewTime := *lease.Spec.RenewTime
leaseDurationSeconds := int32(5)
if lease.Spec.LeaseDurationSeconds != nil {
leaseDurationSeconds = *lease.Spec.LeaseDurationSeconds
}
expireTime := renewTime.Add(time.Duration(leaseDurationSeconds) * time.Second)
if expireTime.After(time.Now()) {
ready = true
}
}
current := util.GetWorkerCondition(
&worker,
netconv1alpha1.WorkerConditionReady,
)
if current == metav1.ConditionTrue && !ready {
wc.recorder.Event(
&worker,
corev1.EventTypeNormal,
netconv1alpha1.WorkerEventNotReady,
"Worker went down",
)
util.SetWorkerCondition(
&worker,
netconv1alpha1.WorkerConditionReady,
metav1.ConditionFalse,
"HealthCheckFail",
"failed to check health",
)
} else if current != metav1.ConditionTrue && ready {
wc.recorder.Event(
&worker,
corev1.EventTypeNormal,
netconv1alpha1.WorkerEventReady,
"Worker is ready",
)
util.SetWorkerCondition(
&worker,
netconv1alpha1.WorkerConditionReady,
metav1.ConditionTrue,
"HealthCheck",
"checked health",
)
} else {
continue
}
if err := wc.Status().Update(ctx, &worker); err != nil {
errList = append(errList, err)
}
}
return multierr.Combine(errList...)
}