forked from coreos/etcd-operator
/
util.go
80 lines (70 loc) · 2.26 KB
/
util.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 controllerutil
import (
"fmt"
"io/ioutil"
"os"
api "github.com/coreos/etcd-operator/pkg/apis/etcd/v1beta2"
"github.com/coreos/etcd-operator/pkg/backup/backend"
"github.com/coreos/etcd-operator/pkg/backup/backupapi"
backupS3 "github.com/coreos/etcd-operator/pkg/backup/s3"
"github.com/coreos/etcd-operator/pkg/cluster/backupstorage"
"k8s.io/client-go/kubernetes"
)
const (
tmpdir = "/tmp"
)
// S3backend contains a s3Backend and all its created resources.
// call Close() to releases those created resources.
type S3backend struct {
backend.Backend
awsDir string
backupDir string
}
// Close releases resources associated with S3backend.
func (s *S3backend) Close() {
os.RemoveAll(s.awsDir)
os.RemoveAll(s.backupDir)
}
// NewS3backend creates a S3backend.
func NewS3backend(kubecli kubernetes.Interface, s3 *api.S3Source, namespace, clusterName string) (*S3backend, error) {
awsDir, err := ioutil.TempDir(tmpdir, "")
if err != nil {
return nil, fmt.Errorf("failed to create aws config/cred dir: (%v)", err)
}
defer func() {
if err != nil {
os.RemoveAll(awsDir)
}
}()
so, err := backupstorage.SetupAWSConfig(kubecli, namespace, s3.AWSSecret, awsDir)
if err != nil {
return nil, fmt.Errorf("failed to setup aws config: (%v)", err)
}
prefix := backupapi.ToS3Prefix(s3.Prefix, namespace, clusterName)
s3cli, err := backupS3.NewFromSessionOpt(s3.S3Bucket, prefix, *so)
if err != nil {
return nil, fmt.Errorf("failed to create aws cli: (%v)", err)
}
backupDir, err := ioutil.TempDir(tmpdir, "")
if err != nil {
return nil, err
}
return &S3backend{
Backend: backend.NewS3Backend(s3cli, backupDir),
awsDir: awsDir,
backupDir: backupDir,
}, nil
}