/
open.go
58 lines (54 loc) · 1.73 KB
/
open.go
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package secretmanager
import (
"bytes"
"context"
"encoding/base64"
"fmt"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/secretsmanager"
"github.com/viant/afs/storage"
"io/ioutil"
"strings"
"io"
)
//Open returns a reader closer for supplied resources
func (s *storager) Open(ctx context.Context, resourceID string, options ...storage.Option) (io.ReadCloser, error) {
resource, err := newResource(resourceID)
if err != nil {
return nil, err
}
client := s.secretManager(resource.Region)
output, err := s.getSecret(ctx, client, resource)
if err != nil {
return nil, err
}
var reader io.Reader
var secretString string
if output.SecretString != nil {
secretString = *output.SecretString
reader = strings.NewReader(secretString)
}
if len(output.SecretBinary) > 0 {
decodedBinarySecretBytes := make([]byte, base64.StdEncoding.DecodedLen(len(output.SecretBinary)))
size, err := base64.StdEncoding.Decode(decodedBinarySecretBytes, output.SecretBinary)
if err != nil {
return nil, fmt.Errorf("failed to base64 decode: %w", err)
}
if len(secretString) > 0 {
binarySecret := string(decodedBinarySecretBytes[:size])
if len(secretString) > 0 && secretString != binarySecret {
return nil, fmt.Errorf("both binary and string secrets are set, but are different")
}
} else {
reader = bytes.NewReader(decodedBinarySecretBytes[:size])
}
}
return ioutil.NopCloser(reader), nil
}
func (s *storager) getSecret(ctx context.Context, client *secretsmanager.SecretsManager, resource *Resource) (*secretsmanager.GetSecretValueOutput, error) {
return client.GetSecretValueWithContext(ctx,
&secretsmanager.GetSecretValueInput{
SecretId: &resource.Secret,
VersionStage: aws.String("AWSCURRENT"),
})
}