mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-10-18 21:29:50 +00:00
01a0ec2d8c
For core K8s API objects like Pods, Nodes, etc., we can use protobuf encoding which reduces CPU consumption related to (de)serialization, reduces overall latency of the API call, reduces memory footprint, reduces the amount of work performed by the GC and results in quicker propagation of objects to event handlers of shared informers. Signed-off-by: Nikhil-Ladha <nikhilladha1999@gmail.com>
97 lines
2.7 KiB
Go
97 lines
2.7 KiB
Go
/*
|
|
Copyright 2020 The Ceph-CSI 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 controller
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/ceph/ceph-csi/internal/util/log"
|
|
|
|
"k8s.io/apimachinery/pkg/runtime"
|
|
"k8s.io/client-go/rest"
|
|
"k8s.io/client-go/tools/leaderelection/resourcelock"
|
|
clientConfig "sigs.k8s.io/controller-runtime/pkg/client/config"
|
|
"sigs.k8s.io/controller-runtime/pkg/manager"
|
|
"sigs.k8s.io/controller-runtime/pkg/manager/signals"
|
|
metricsserver "sigs.k8s.io/controller-runtime/pkg/metrics/server"
|
|
)
|
|
|
|
// Manager is the interface that will wrap Add function.
|
|
// The New controllers which gets added, as to implement Add function to get
|
|
// started by the manager.
|
|
type Manager interface {
|
|
Add(mgr manager.Manager, cfg Config) error
|
|
}
|
|
|
|
// Config holds the drivername and namespace name.
|
|
type Config struct {
|
|
DriverName string
|
|
Namespace string
|
|
ClusterName string
|
|
InstanceID string
|
|
SetMetadata bool
|
|
}
|
|
|
|
// ControllerList holds the list of managers need to be started.
|
|
var ControllerList []Manager
|
|
|
|
// addToManager calls the registered managers Add method.
|
|
func addToManager(mgr manager.Manager, config Config) error {
|
|
for _, c := range ControllerList {
|
|
err := c.Add(mgr, config)
|
|
if err != nil {
|
|
return fmt.Errorf("failed to add: %w", err)
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// Start will start all the registered managers.
|
|
func Start(config Config) error {
|
|
electionID := config.DriverName + "-" + config.Namespace
|
|
opts := manager.Options{
|
|
LeaderElection: true,
|
|
// disable metrics
|
|
Metrics: metricsserver.Options{BindAddress: "0"},
|
|
LeaderElectionNamespace: config.Namespace,
|
|
LeaderElectionResourceLock: resourcelock.LeasesResourceLock,
|
|
LeaderElectionID: electionID,
|
|
}
|
|
|
|
kubeConfig := clientConfig.GetConfigOrDie()
|
|
coreKubeConfig := rest.CopyConfig(kubeConfig)
|
|
coreKubeConfig.ContentType = runtime.ContentTypeProtobuf
|
|
mgr, err := manager.New(coreKubeConfig, opts)
|
|
if err != nil {
|
|
log.ErrorLogMsg("failed to create manager %s", err)
|
|
|
|
return err
|
|
}
|
|
err = addToManager(mgr, config)
|
|
if err != nil {
|
|
log.ErrorLogMsg("failed to add manager %s", err)
|
|
|
|
return err
|
|
}
|
|
err = mgr.Start(signals.SetupSignalHandler())
|
|
if err != nil {
|
|
log.ErrorLogMsg("failed to start manager %s", err)
|
|
}
|
|
|
|
return err
|
|
}
|