forked from coreos/etcd-operator
/
operator.go
90 lines (76 loc) · 2.42 KB
/
operator.go
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// Copyright 2017 The etcd-operator 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 (
"context"
"fmt"
"os"
"sync"
api "github.com/coreos/etcd-operator/pkg/apis/etcd/v1beta2"
"github.com/coreos/etcd-operator/pkg/client"
"github.com/coreos/etcd-operator/pkg/generated/clientset/versioned"
"github.com/coreos/etcd-operator/pkg/util/constants"
"github.com/coreos/etcd-operator/pkg/util/k8sutil"
"github.com/sirupsen/logrus"
apiextensionsclient "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/cache"
"k8s.io/client-go/util/workqueue"
)
type Backup struct {
logger *logrus.Entry
namespace string
// k8s workqueue pattern
indexer cache.Indexer
informer cache.Controller
queue workqueue.RateLimitingInterface
kubecli kubernetes.Interface
backupCRCli versioned.Interface
kubeExtCli apiextensionsclient.Interface
backupRunnerStore sync.Map
createCRD bool
}
type BackupRunner struct {
spec api.BackupSpec
cancelFunc context.CancelFunc
}
// New creates a backup operator.
func New(createCRD bool) *Backup {
return &Backup{
logger: logrus.WithField("pkg", "controller"),
namespace: os.Getenv(constants.EnvOperatorPodNamespace),
kubecli: k8sutil.MustNewKubeClient(),
backupCRCli: client.MustNewInCluster(),
kubeExtCli: k8sutil.MustNewKubeExtClient(),
createCRD: createCRD,
}
}
// Start starts the Backup operator.
func (b *Backup) Start(ctx context.Context) error {
if b.createCRD {
if err := b.initCRD(); err != nil {
return err
}
}
go b.run(ctx)
<-ctx.Done()
return ctx.Err()
}
func (b *Backup) initCRD() error {
err := k8sutil.CreateCRD(b.kubeExtCli, api.EtcdBackupCRDName, api.EtcdBackupResourceKind, api.EtcdBackupResourcePlural, "")
if err != nil {
return fmt.Errorf("failed to create CRD: %v", err)
}
return k8sutil.WaitCRDReady(b.kubeExtCli, api.EtcdBackupCRDName)
}