Merge pull request #847 from lanzafame/feat/accept-human-sizes

accept humanized size values to cli flags

cli/params.go

@@ -1,6 +1,7 @@
 package cli
 
 import (
+	"github.com/docker/go-units"
 	"github.com/filecoin-project/lotus/build"
 	"golang.org/x/xerrors"
 	"gopkg.in/urfave/cli.v2"
@@ -10,13 +11,18 @@ var fetchParamCmd = &cli.Command{
 	Name:  "fetch-params",
 	Usage: "Fetch proving parameters",
 	Flags: []cli.Flag{
-		&cli.Uint64Flag{
+		&cli.StringFlag{
 			Name:  "proving-params",
-			Usage: "download params used creating proofs for given size",
+			Usage: "download params used creating proofs for given size, i.e. 32GiB",
 		},
 	},
 	Action: func(cctx *cli.Context) error {
-		err := build.GetParams(cctx.Uint64("proving-params"))
+		sectorSizeInt, err := units.FromHumanSize(cctx.String("proving-params"))
+		if err != nil {
+			return err
+		}
+		sectorSize := uint64(sectorSizeInt)
+		err = build.GetParams(sectorSize)
 		if err != nil {
 			return xerrors.Errorf("fetching proof parameters: %w", err)
 		}