Provide new cli options for 'put' command

- --protection-level
  - --block-size

cmd/erasure-demo/erasure.go

@@ -18,7 +18,7 @@ func erasureGetList(config inputConfig) (io.Reader, error) {
 func erasureGet(config inputConfig, objectPath string) (io.Reader, error) {
 	var objectStorage storage.ObjectStorage
 	rootDir := path.Join(config.rootDir, config.storageDriver)
-	objectStorage, err := es.NewStorage(rootDir, 10, 6, 1024*1024)
+	objectStorage, err := es.NewStorage(rootDir, config.k, config.m, config.blockSize)
 	if err != nil {
 		return nil, err
 	}
@@ -36,7 +36,7 @@ func erasurePut(config inputConfig, objectPath string, reader io.Reader) error {
 		return err
 	}
 	var objectStorage storage.ObjectStorage
-	if objectStorage, err = es.NewStorage(rootDir, 10, 6, 1024*1024); err != nil {
+	if objectStorage, err = es.NewStorage(rootDir, config.k, config.m, config.blockSize); err != nil {
 		return err
 	}
 	if err = objectStorage.Put(objectPath, reader); err != nil {

cmd/erasure-demo/main.go

@@ -69,8 +69,8 @@ func main() {
 				},
 				cli.StringFlag{
 					Name:  "driver",
-					Value: "fs",
-					Usage: "fs",
+					Value: "erasure",
+					Usage: "erasure",
 				},
 			},
 		},
@@ -84,10 +84,20 @@ func main() {
 					Value: getMinioDir(),
 					Usage: "",
 				},
+				cli.StringFlag{
+					Name:  "protection-level",
+					Value: "10,6",
+					Usage: "data,parity",
+				},
+				cli.StringFlag{
+					Name:  "block-size",
+					Value: "1M",
+					Usage: "Size of blocks. Examples: 1K, 1M, full",
+				},
 				cli.StringFlag{
 					Name:  "driver",
-					Value: "fs",
-					Usage: "fs",
+					Value: "erasure",
+					Usage: "erasure",
 				},
 			},
 		},