forked from coreos/etcd-operator
/
s3_reader.go
54 lines (45 loc) · 1.45 KB
/
s3_reader.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 reader
import (
"fmt"
"io"
"github.com/coreos/etcd-operator/pkg/backup/util"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/s3"
)
// ensure s3Reader satisfies reader interface.
var _ Reader = &s3Reader{}
// s3Reader provides Reader imlementation for reading a file from S3
type s3Reader struct {
s3 *s3.S3
}
func NewS3Reader(s3 *s3.S3) Reader {
return &s3Reader{s3}
}
// Open opens the file on path where path must be in the format "<s3-bucket-name>/<key>"
func (s3r *s3Reader) Open(path string) (io.ReadCloser, error) {
bucket, key, err := util.ParseBucketAndKey(path)
if err != nil {
return nil, fmt.Errorf("failed to parse s3 bucket and key: %v", err)
}
resp, err := s3r.s3.GetObject(&s3.GetObjectInput{
Bucket: aws.String(bucket),
Key: aws.String(key),
})
if err != nil {
return nil, err
}
return resp.Body, nil
}