Wire up sha512 matching inside donut along with md5sum

pkg/donut/heal.go

@@ -1,25 +1,32 @@
 package donut
 
-import (
-	"fmt"
+import "github.com/minio/minio/pkg/iodine"
 
-	"github.com/minio/minio/pkg/iodine"
-)
+type missingDisk struct {
+	nodeNumber  int
+	sliceNumber int
+	bucketName  string
+}
 
 // Heal heal an existing donut
 func (donut API) Heal() error {
-	missingDisks := make(map[int]struct{})
+	var missingDisks []missingDisk
+	nodeNumber := 0
 	for _, node := range donut.nodes {
 		disks, err := node.ListDisks()
 		if err != nil {
 			return iodine.New(err, nil)
 		}
 		for i, disk := range disks {
-			dirs, err := disk.ListDir(donut.config.DonutName)
-			if err != nil {
-				missingDisks[i] = struct{}{}
+			_, err := disk.ListDir(donut.config.DonutName)
+			if err == nil {
+				continue
 			}
-			fmt.Println(dirs)
+			missingDisk := missingDisk{
+				nodeNumber:  nodeNumber,
+				sliceNumber: i,
+			}
+			missingDisks = append(missingDisks, missingDisk)
 		}
 	}
 	return nil