package s3_backend import ( "fmt" "sync" "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/s3iface" ) var ( s3Sessions = make(map[string]s3iface.S3API) sessionsLock sync.RWMutex ) func getSession(region string) (s3iface.S3API, bool) { sessionsLock.RLock() defer sessionsLock.RUnlock() sess, found := s3Sessions[region] return sess, found } func createSession(awsAccessKeyId, awsSecretAccessKey, region string) (s3iface.S3API, error) { sessionsLock.Lock() defer sessionsLock.Unlock() if t, found := s3Sessions[region]; found { return t, nil } config := &aws.Config{ Region: aws.String(region), } if awsAccessKeyId != "" && awsSecretAccessKey != "" { config.Credentials = credentials.NewStaticCredentials(awsAccessKeyId, awsSecretAccessKey, "") } sess, err := session.NewSession(config) if err != nil { return nil, fmt.Errorf("create aws session in region %s: %v", region, err) } t := s3.New(sess) s3Sessions[region] = t return t, nil } func deleteFromS3(sess s3iface.S3API, sourceBucket string, sourceKey string) (err error) { _, err = sess.DeleteObject(&s3.DeleteObjectInput{ Bucket: aws.String(sourceBucket), Key: aws.String(sourceKey), }) return err }