Initial commit

Signed-off-by: Andy Goldstein <andy.goldstein@gmail.com>

pkg/controller/backup_sync_controller.go

@@ -0,0 +1,77 @@
+/*
+Copyright 2017 Heptio Inc.
+
+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"
+	"time"
+
+	"github.com/golang/glog"
+
+	"k8s.io/apimachinery/pkg/api/errors"
+	"k8s.io/apimachinery/pkg/util/wait"
+
+	"github.com/heptio/ark/pkg/cloudprovider"
+	arkv1client "github.com/heptio/ark/pkg/generated/clientset/typed/ark/v1"
+)
+
+type backupSyncController struct {
+	client        arkv1client.BackupsGetter
+	backupService cloudprovider.BackupService
+	bucket        string
+	syncPeriod    time.Duration
+}
+
+func NewBackupSyncController(client arkv1client.BackupsGetter, backupService cloudprovider.BackupService, bucket string, syncPeriod time.Duration) Interface {
+	if syncPeriod < time.Minute {
+		glog.Infof("Backup sync period %v is too short. Setting to 1 minute", syncPeriod)
+		syncPeriod = time.Minute
+	}
+	return &backupSyncController{
+		client:        client,
+		backupService: backupService,
+		bucket:        bucket,
+		syncPeriod:    syncPeriod,
+	}
+}
+
+// Run is a blocking function that continually runs the object storage -> Ark API
+// sync process according to the controller's syncPeriod. It will return when it
+// receives on the ctx.Done() channel.
+func (c *backupSyncController) Run(ctx context.Context, workers int) error {
+	glog.Info("Running backup sync controller")
+	wait.Until(c.run, c.syncPeriod, ctx.Done())
+	return nil
+}
+
+func (c *backupSyncController) run() {
+	glog.Info("Syncing backups from object storage")
+	backups, err := c.backupService.GetAllBackups(c.bucket)
+	if err != nil {
+		glog.Errorf("error listing backups: %v", err)
+		return
+	}
+	glog.Infof("Found %d backups", len(backups))
+
+	for _, cloudBackup := range backups {
+		glog.Infof("Syncing backup %s/%s", cloudBackup.Namespace, cloudBackup.Name)
+		cloudBackup.ResourceVersion = ""
+		if _, err := c.client.Backups(cloudBackup.Namespace).Create(cloudBackup); err != nil && !errors.IsAlreadyExists(err) {
+			glog.Errorf("error syncing backup %s/%s from object storage: %v", cloudBackup.Namespace, cloudBackup.Name, err)
+		}
+	}
+}