forked from helmfile/vals
/
s3.go
101 lines (79 loc) · 2.04 KB
/
s3.go
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package s3
import (
"fmt"
"io"
"strings"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/s3"
"github.com/aws/aws-sdk-go/service/s3/s3iface"
"gopkg.in/yaml.v3"
"github.com/SMouchlianitis/vals/pkg/api"
"github.com/SMouchlianitis/vals/pkg/awsclicompat"
"github.com/SMouchlianitis/vals/pkg/log"
)
type provider struct {
// Keeping track of s3 services since we need a s3 service per region
s3Client s3iface.S3API
log *log.Logger
// AWS s3 Parameter store global configuration
Region string
Version string
Profile string
RoleARN string
Mode string
}
func New(l *log.Logger, cfg api.StaticConfig) *provider {
p := &provider{
log: l,
}
p.Region = cfg.String("region")
p.Version = cfg.String("version")
if p.Version == "" {
p.Version = cfg.String("version_id")
}
p.Profile = cfg.String("profile")
p.RoleARN = cfg.String("role_arn")
return p
}
// Get gets an AWS s3 Parameter Store value
func (p *provider) GetString(key string) (string, error) {
split := strings.SplitN(key, "/", 2)
bucket, objKey := split[0], split[1]
s3Client := p.getS3Client()
in := s3.GetObjectInput{
Bucket: aws.String(bucket),
Key: aws.String(objKey),
}
if p.Version != "" {
in.VersionId = aws.String(p.Version)
}
out, err := s3Client.GetObject(&in)
if err != nil {
return "", fmt.Errorf("getting s3 object: %w", err)
}
p.log.Debugf("s3: successfully retrieved object for key=%s", key)
all, err := io.ReadAll(out.Body)
if err != nil {
return "", fmt.Errorf("reading s3 object body: %w", err)
}
return string(all), nil
}
func (p *provider) GetStringMap(key string) (map[string]interface{}, error) {
yamlData, err := p.GetString(key)
if err != nil {
return nil, err
}
m := map[string]interface{}{}
if err := yaml.Unmarshal([]byte(yamlData), &m); err != nil {
return nil, err
}
return m, nil
}
func (p *provider) getS3Client() s3iface.S3API {
if p.s3Client != nil {
return p.s3Client
}
sess := awsclicompat.NewSession(p.Region, p.Profile, p.RoleARN)
p.s3Client = s3.New(sess)
return p.s3Client
}