srpmproc/pkg/blob/s3/s3.go
2022-11-06 04:53:02 +01:00

117 lines
3.1 KiB
Go

// Copyright (c) 2021 The Srpmproc Authors
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
package s3
import (
"bytes"
"io/ioutil"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/s3"
"github.com/aws/aws-sdk-go/service/s3/s3manager"
"github.com/spf13/viper"
)
type S3 struct {
bucket string
uploader *s3manager.Uploader
}
func New(name string) *S3 {
awsCfg := &aws.Config{}
if accessKey := viper.GetString("s3-access-key"); accessKey != "" {
awsCfg.Credentials = credentials.NewStaticCredentials(accessKey, viper.GetString("s3-secret-key"), "")
}
if endpoint := viper.GetString("s3-endpoint"); endpoint != "" {
awsCfg.Endpoint = aws.String(endpoint)
}
if region := viper.GetString("s3-region"); region != "" {
awsCfg.Region = aws.String(region)
}
if disableSsl := viper.GetBool("s3-disable-ssl"); disableSsl {
awsCfg.DisableSSL = aws.Bool(true)
}
if forcePathStyle := viper.GetBool("s3-force-path-style"); forcePathStyle {
awsCfg.S3ForcePathStyle = aws.Bool(true)
}
sess := session.Must(session.NewSession(awsCfg))
uploader := s3manager.NewUploader(sess)
return &S3{
bucket: name,
uploader: uploader,
}
}
func (s *S3) Write(path string, content []byte) error {
buf := bytes.NewBuffer(content)
_, err := s.uploader.Upload(&s3manager.UploadInput{
Bucket: aws.String(s.bucket),
Key: aws.String(path),
Body: buf,
})
if err != nil {
return err
}
return nil
}
func (s *S3) Read(path string) ([]byte, error) {
obj, err := s.uploader.S3.GetObject(&s3.GetObjectInput{
Bucket: aws.String(s.bucket),
Key: aws.String(path),
})
if err != nil {
s3err, ok := err.(awserr.Error)
if !ok || s3err.Code() != s3.ErrCodeNoSuchKey {
return nil, err
}
return nil, nil
}
body, err := ioutil.ReadAll(obj.Body)
if err != nil {
return nil, err
}
return body, nil
}
func (s *S3) Exists(path string) (bool, error) {
_, err := s.uploader.S3.GetObject(&s3.GetObjectInput{
Bucket: aws.String(s.bucket),
Key: aws.String(path),
})
return err == nil, nil
}