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manager.go
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manager.go
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/*
Copyright 2021 KubeCube Authors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package syncmgr
import (
"context"
"fmt"
"net/http"
apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
"k8s.io/apimachinery/pkg/runtime"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
clientgoscheme "k8s.io/client-go/kubernetes/scheme"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/healthz"
"sigs.k8s.io/controller-runtime/pkg/manager"
"github.com/kubecube-io/kubecube/pkg/apis"
"github.com/kubecube-io/kubecube/pkg/clog"
"github.com/kubecube-io/kubecube/pkg/utils/exit"
"github.com/kubecube-io/kubecube/pkg/warden/reporter"
"github.com/kubecube-io/kubecube/pkg/warden/utils"
)
const healthProbeAddr = "0.0.0.0:9777"
var (
log clog.CubeLogger
scheme = runtime.NewScheme()
)
func init() {
utilruntime.Must(clientgoscheme.AddToScheme(scheme))
utilruntime.Must(apis.AddToScheme(scheme))
utilruntime.Must(apiextensionsv1.AddToScheme(scheme))
}
// SyncManager watch and sync resource from cluster master to cluster member
type SyncManager struct {
ctrl.Manager
LocalClient client.Client
PivotClusterKubeConfig string
PivotCubeHost string
}
func (s *SyncManager) Initialize() error {
log = clog.WithName("syncmgr")
cfg, err := utils.GetPivotConfig(s.PivotClusterKubeConfig, s.PivotCubeHost)
if err != nil {
return fmt.Errorf("error building kubeconfig: %s", err.Error())
}
s.Manager, err = manager.New(cfg, ctrl.Options{Scheme: scheme, HealthProbeBindAddress: healthProbeAddr})
if err != nil {
return fmt.Errorf("error new sync mgr: %s", err.Error())
}
s.LocalClient, err = client.New(ctrl.GetConfigOrDie(), client.Options{Scheme: scheme})
if err != nil {
return fmt.Errorf("error new local client: %s", err.Error())
}
for _, r := range syncResources {
err = s.SetupCtrlWithManager(r, newGenericObj)
if err != nil {
return err
}
}
gc := NewGc(cfg, s.LocalClient)
go gc.GcWork()
err = s.Manager.AddReadyzCheck("readyz", healthz.Ping)
if err != nil {
return err
}
reporter.RegisterCheckFunc(s.readyzCheck)
return nil
}
func (s *SyncManager) readyzCheck() bool {
path := fmt.Sprintf("http://%s/readyz", healthProbeAddr)
resp, err := http.Get(path)
if err != nil {
log.Debug("sync manager not ready: %v", err)
return false
}
_ = resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return false
}
log.Info("sync manager ready")
return true
}
func (s *SyncManager) Run(stop <-chan struct{}) {
ctx := exit.SetupCtxWithStop(context.Background(), stop)
err := s.Manager.Start(ctx)
if err != nil {
log.Fatal("start sync manager failed: %s", err)
}
//if !s.Manager.GetCache().WaitForCacheSync(ctx) {
// log.Fatal("wait for cache sync failed")
//}
}