/
s3.go
79 lines (68 loc) · 1.5 KB
/
s3.go
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package storages
import (
"bytes"
"io"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/service/s3"
"gopkg.in/yaml.v3"
v1 "kusionstack.io/kusion/pkg/apis/api.kusion.io/v1"
)
// S3Storage is an implementation of state.Storage which uses s3 as storage.
type S3Storage struct {
s3 *s3.S3
bucket string
// The s3 key to store the state file.
key string
}
func NewS3Storage(s3 *s3.S3, bucket, key string) *S3Storage {
return &S3Storage{
s3: s3,
bucket: bucket,
key: key,
}
}
func (s *S3Storage) Get() (*v1.DeprecatedState, error) {
input := &s3.GetObjectInput{
Bucket: aws.String(s.bucket),
Key: &s.key,
}
output, err := s.s3.GetObject(input)
if err != nil {
awsErr, ok := err.(awserr.Error)
// if no kusion state file, return nil state
if ok && awsErr.Code() == s3.ErrCodeNoSuchKey {
return nil, nil
}
return nil, err
}
defer func() {
_ = output.Body.Close()
}()
content, err := io.ReadAll(output.Body)
if err != nil {
return nil, err
}
if len(content) == 0 {
return nil, nil
}
state := &v1.DeprecatedState{}
err = yaml.Unmarshal(content, state)
if err != nil {
return nil, err
}
return state, nil
}
func (s *S3Storage) Apply(state *v1.DeprecatedState) error {
content, err := yaml.Marshal(state)
if err != nil {
return err
}
input := &s3.PutObjectInput{
Bucket: aws.String(s.bucket),
Key: aws.String(s.key),
Body: bytes.NewReader(content),
}
_, err = s.s3.PutObject(input)
return err
}