s3 backend support customizing storage class

docker/compose/master-cloud.toml

@@ -28,3 +28,4 @@ sleep_minutes = 17          # sleep minutes between each script execution
 	region = "us-east-2"
 	bucket = "volume_bucket"    # an existing bucket
 	endpoint = "http://server2:8333"
+	storage_class = "STANDARD_IA"

weed/command/scaffold/master.toml

@@ -36,6 +36,7 @@ aws_secret_access_key = ""     # if empty, loads from the shared credentials fil
 region = "us-east-2"
 bucket = "your_bucket_name"    # an existing bucket
 endpoint = ""
+storage_class = "STANDARD_IA"
 
 # create this number of logical volumes if no more writable volumes
 # count_x means how many copies of data.

weed/storage/backend/s3_backend/s3_backend.go

@@ -37,6 +37,7 @@ type S3BackendStorage struct {
 	region                string
 	bucket                string
 	endpoint              string
+	storageClass          string
 	conn                  s3iface.S3API
 }
 
@@ -48,6 +49,10 @@ func newS3BackendStorage(configuration backend.StringProperties, configPrefix st
 	s.region = configuration.GetString(configPrefix + "region")
 	s.bucket = configuration.GetString(configPrefix + "bucket")
 	s.endpoint = configuration.GetString(configPrefix + "endpoint")
+	s.storageClass = configuration.GetString(configPrefix + "storageClass")
+	if s.storageClass == "" {
+		s.storageClass = "STANDARD_IA"
+	}
 
 	s.conn, err = createSession(s.aws_access_key_id, s.aws_secret_access_key, s.region, s.endpoint)
 
@@ -62,6 +67,7 @@ func (s *S3BackendStorage) ToProperties() map[string]string {
 	m["region"] = s.region
 	m["bucket"] = s.bucket
 	m["endpoint"] = s.endpoint
+	m["storage_class"] = s.storageClass
 	return m
 }
 
@@ -85,7 +91,7 @@ func (s *S3BackendStorage) CopyFile(f *os.File, fn func(progressed int64, percen
 
 	glog.V(1).Infof("copying dat file of %s to remote s3.%s as %s", f.Name(), s.id, key)
 
-	size, err = uploadToS3(s.conn, f.Name(), s.bucket, key, fn)
+	size, err = uploadToS3(s.conn, f.Name(), s.bucket, key, s.storageClass, fn)
 
 	return
 }

weed/storage/backend/s3_backend/s3_upload.go

@@ -12,7 +12,7 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/glog"
 )
 
-func uploadToS3(sess s3iface.S3API, filename string, destBucket string, destKey string, fn func(progressed int64, percentage float32) error) (fileSize int64, err error) {
+func uploadToS3(sess s3iface.S3API, filename string, destBucket string, destKey string, storageClass string, fn func(progressed int64, percentage float32) error) (fileSize int64, err error) {
 
 	//open the file
 	f, err := os.Open(filename)
@@ -52,7 +52,7 @@ func uploadToS3(sess s3iface.S3API, filename string, destBucket string, destKey
 		Bucket:       aws.String(destBucket),
 		Key:          aws.String(destKey),
 		Body:         fileReader,
-		StorageClass: aws.String("STANDARD_IA"),
+		StorageClass: aws.String(storageClass),
 	})
 
 	//in case it fails to upload