mirror of
https://github.com/TECHNOFAB11/zfs-localpv.git
synced 2025-12-12 06:20:11 +01:00
9f5cf445df
provisioning and deprovisioning of the volumes on the node where zfs pool has already been setup. Pool name and the volume parameters has to be given in storage class which will be used to provision the volume. Signed-off-by: Pawan <pawan@mayadata.io>
110 lines
3.3 KiB
Go
110 lines
3.3 KiB
Go
/*
|
|
Copyright 2019 The OpenEBS 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 (
|
|
"sync"
|
|
|
|
"github.com/Sirupsen/logrus"
|
|
"github.com/pkg/errors"
|
|
|
|
"time"
|
|
|
|
clientset "github.com/openebs/zfs-localpv/pkg/generated/clientset/internalclientset"
|
|
informers "github.com/openebs/zfs-localpv/pkg/generated/informer/externalversions"
|
|
kubeinformers "k8s.io/client-go/informers"
|
|
"k8s.io/client-go/kubernetes"
|
|
"k8s.io/client-go/rest"
|
|
"k8s.io/client-go/tools/clientcmd"
|
|
"sigs.k8s.io/controller-runtime/pkg/runtime/signals"
|
|
)
|
|
|
|
var (
|
|
masterURL string
|
|
kubeconfig string
|
|
)
|
|
|
|
// Start starts the zfsvolume controller.
|
|
func Start(controllerMtx *sync.RWMutex) error {
|
|
// set up signals so we handle the first shutdown signal gracefully
|
|
stopCh := signals.SetupSignalHandler()
|
|
|
|
// Get in cluster config
|
|
cfg, err := getClusterConfig(kubeconfig)
|
|
if err != nil {
|
|
return errors.Wrap(err, "error building kubeconfig")
|
|
}
|
|
|
|
// Building Kubernetes Clientset
|
|
kubeClient, err := kubernetes.NewForConfig(cfg)
|
|
if err != nil {
|
|
return errors.Wrap(err, "error building kubernetes clientset")
|
|
}
|
|
|
|
// Building OpenEBS Clientset
|
|
openebsClient, err := clientset.NewForConfig(cfg)
|
|
if err != nil {
|
|
return errors.Wrap(err, "error building openebs clientset")
|
|
}
|
|
|
|
kubeInformerFactory := kubeinformers.NewSharedInformerFactory(kubeClient, time.Second*30)
|
|
zvInformerFactory := informers.NewSharedInformerFactory(openebsClient, time.Second*30)
|
|
// Build() fn of all controllers calls AddToScheme to adds all types of this
|
|
// clientset into the given scheme.
|
|
// If multiple controllers happen to call this AddToScheme same time,
|
|
// it causes panic with error saying concurrent map access.
|
|
// This lock is used to serialize the AddToScheme call of all controllers.
|
|
controllerMtx.Lock()
|
|
|
|
controller, err := NewZVControllerBuilder().
|
|
withKubeClient(kubeClient).
|
|
withOpenEBSClient(openebsClient).
|
|
withZVSynced(zvInformerFactory).
|
|
withZVLister(zvInformerFactory).
|
|
withRecorder(kubeClient).
|
|
withEventHandler(zvInformerFactory).
|
|
withWorkqueueRateLimiting().Build()
|
|
|
|
// blocking call, can't use defer to release the lock
|
|
controllerMtx.Unlock()
|
|
|
|
if err != nil {
|
|
return errors.Wrapf(err, "error building controller instance")
|
|
}
|
|
|
|
go kubeInformerFactory.Start(stopCh)
|
|
go zvInformerFactory.Start(stopCh)
|
|
|
|
// Threadiness defines the number of workers to be launched in Run function
|
|
return controller.Run(2, stopCh)
|
|
}
|
|
|
|
// GetClusterConfig return the config for k8s.
|
|
func getClusterConfig(kubeconfig string) (*rest.Config, error) {
|
|
cfg, err := rest.InClusterConfig()
|
|
if err != nil {
|
|
logrus.Errorf("Failed to get k8s Incluster config. %+v", err)
|
|
if kubeconfig == "" {
|
|
return nil, errors.Wrap(err, "kubeconfig is empty")
|
|
}
|
|
cfg, err = clientcmd.BuildConfigFromFlags(masterURL, kubeconfig)
|
|
if err != nil {
|
|
return nil, errors.Wrap(err, "error building kubeconfig")
|
|
}
|
|
}
|
|
return cfg, err
|
|
}
|