/
s3.go
143 lines (123 loc) · 3.46 KB
/
s3.go
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package s3
import (
"bytes"
"io"
"time"
"github.com/aws/aws-sdk-go/aws"
"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/timemore/foundation/errors"
mediastore "github.com/timemore/foundation/media/store"
"gopkg.in/yaml.v3"
)
type Config struct {
Region string `env:"REGION,required" yaml:"region" json:"region"`
BucketName string `env:"BUCKET_NAME,required" yaml:"bucket_name" json:"bucket_name"`
AccessKeyID string `env:"ACCESS_KEY_ID" yaml:"access_key_id" json:"access_key_id"`
SecretAccessKey string `env:"SECRET_ACCESS_KEY" yaml:"secret_access_key" json:"secret_access_key"`
}
const ServiceName = "s3"
func init() {
mediastore.RegisterModule(
ServiceName,
mediastore.Module{
NewService: NewService,
ServiceConfigSkeleton: func() mediastore.ServiceConfig {
cfg := ConfigSkeleton()
return &cfg
},
})
}
func ConfigSkeleton() Config { return Config{} }
func NewService(config mediastore.ServiceConfig) (mediastore.Service, error) {
if config == nil {
return nil, errors.ArgMsg("config", "missing")
}
conf, ok := config.(*Config)
if !ok {
b, _ := yaml.Marshal(config)
var cfg Config
err := yaml.Unmarshal(b, &cfg)
if err != nil {
return nil, errors.ArgMsg("config", "type invalid")
}
conf = &cfg
}
if conf == nil || conf.Region == "" || conf.BucketName == "" {
return nil, errors.ArgMsg("config", "fields invalid")
}
var creds *credentials.Credentials
if conf.AccessKeyID != "" {
creds = credentials.NewStaticCredentials(
conf.AccessKeyID,
conf.SecretAccessKey,
"",
)
}
sess, err := session.NewSession(&aws.Config{
Region: aws.String(conf.Region),
Credentials: creds,
})
if err != nil {
return nil, errors.Wrap("AWS Session", err)
}
const uploadPartSize = 10 * 1024 * 1024 // 10MiB
return &Service{
bucketName: conf.BucketName,
uploader: s3manager.NewUploader(sess, func(u *s3manager.Uploader) {
u.PartSize = uploadPartSize
}),
downloader: s3manager.NewDownloader(sess),
svc: s3.New(sess),
}, nil
}
type Service struct {
bucketName string
uploader *s3manager.Uploader
svc *s3.S3
downloader *s3manager.Downloader
}
func (s *Service) PutObject(targetKey string, contentSource io.Reader) (uploadInfo *mediastore.UploadInfo, err error) {
result, err := s.uploader.Upload(&s3manager.UploadInput{
Body: contentSource,
Bucket: aws.String(s.bucketName),
Key: aws.String(targetKey),
})
if err != nil {
return nil, errors.Wrap("upload", err)
}
return &mediastore.UploadInfo{
Bucket: *aws.String(s.bucketName),
Key: *aws.String(targetKey),
UploadID: result.UploadID,
Location: result.Location,
}, nil
}
func (s *Service) GetPublicObject(sourceKey string) (targetURL string, err error) {
req, _ := s.svc.GetObjectRequest(&s3.GetObjectInput{
Bucket: aws.String(s.bucketName),
Key: aws.String(sourceKey),
})
targetURL, err = req.Presign(15 * time.Minute)
if err != nil {
return "", err
}
return targetURL, nil
}
func (s *Service) GetObject(sourceKey string) (stream *bytes.Buffer, err error) {
buff := &aws.WriteAtBuffer{}
_, err = s.downloader.Download(buff,
&s3.GetObjectInput{
Bucket: aws.String(s.bucketName),
Key: aws.String(sourceKey),
})
if err != nil {
return nil, err
}
buf := new(bytes.Buffer)
buf.Read(buff.Bytes())
return buf, nil
}
var _ mediastore.Service = &Service{}