Merge pull request #6102 from ipfs/feat/mfs-flush-cid

 Return CID from 'ipfs files flush' 

core/commands/files.go

@@ -347,7 +347,7 @@ var filesCpCmd = &cmds.Command{
 		}
 
 		if flush {
-			err := mfs.FlushPath(req.Context, nd.FilesRoot, dst)
+			_, err := mfs.FlushPath(req.Context, nd.FilesRoot, dst)
 			if err != nil {
 				return fmt.Errorf("cp: cannot flush the created file %s: %s", dst, err)
 			}
@@ -649,7 +649,7 @@ Example:
 
 		err = mfs.Mv(nd.FilesRoot, src, dst)
 		if err == nil && flush {
-			err = mfs.FlushPath(req.Context, nd.FilesRoot, "/")
+			_, err = mfs.FlushPath(req.Context, nd.FilesRoot, "/")
 		}
 		return err
 	},
@@ -856,6 +856,10 @@ Examples:
 	},
 }
 
+type flushRes struct {
+	Cid string
+}
+
 var filesFlushCmd = &cmds.Command{
 	Helptext: cmdkit.HelpText{
 		Tagline: "Flush a given path's data to disk.",
@@ -873,13 +877,24 @@ are run with the '--flush=false'.
 			return err
 		}
 
+		enc, err := cmdenv.GetCidEncoder(req)
+		if err != nil {
+			return err
+		}
+
 		path := "/"
 		if len(req.Arguments) > 0 {
 			path = req.Arguments[0]
 		}
 
-		return mfs.FlushPath(req.Context, nd.FilesRoot, path)
+		n, err := mfs.FlushPath(req.Context, nd.FilesRoot, path)
+		if err != nil {
+			return err
+		}
+
+		return cmds.EmitOnce(res, &flushRes{enc.Encode(n.Cid())})
 	},
+	Type: flushRes{},
 }
 
 var filesChcidCmd = &cmds.Command{
@@ -916,7 +931,7 @@ Change the cid version or hash function of the root node of a given path.
 
 		err = updatePath(nd.FilesRoot, path, prefix)
 		if err == nil && flush {
-			err = mfs.FlushPath(req.Context, nd.FilesRoot, path)
+			_, err = mfs.FlushPath(req.Context, nd.FilesRoot, path)
 		}
 		return err
 	},

go.mod

@@ -49,7 +49,7 @@ require (
 	github.com/ipfs/go-merkledag v0.0.2
 	github.com/ipfs/go-metrics-interface v0.0.1
 	github.com/ipfs/go-metrics-prometheus v0.0.1
-	github.com/ipfs/go-mfs v0.0.3
+	github.com/ipfs/go-mfs v0.0.4
 	github.com/ipfs/go-path v0.0.2
 	github.com/ipfs/go-unixfs v0.0.2
 	github.com/ipfs/go-verifcid v0.0.1

go.sum

@@ -188,6 +188,8 @@ github.com/ipfs/go-metrics-prometheus v0.0.1 h1:5iY3WO20WFSOErZyyYemHsbGm0V+a8YN
 github.com/ipfs/go-metrics-prometheus v0.0.1/go.mod h1:ELLU99AQQNi+zX6GCGm2lAgnzdSH3u5UVlCdqSXnEks=
 github.com/ipfs/go-mfs v0.0.3 h1:gFBlZw9DpZXaxqeto1H9uLkg+qzE8EVbCIVD2yuKUU4=
 github.com/ipfs/go-mfs v0.0.3/go.mod h1:rUT0dKNWkKa1T+MobpBL2zANn7p8Y6unXANC0PV2FLk=
+github.com/ipfs/go-mfs v0.0.4 h1:34qX5A7mQTYTkszSKIAFr+Y7BbvwVjHW9mzHDxSUqTo=
+github.com/ipfs/go-mfs v0.0.4/go.mod h1:rUT0dKNWkKa1T+MobpBL2zANn7p8Y6unXANC0PV2FLk=
 github.com/ipfs/go-path v0.0.1 h1:6UskTq8xYVs3zVnHjXDvoCqw22dKWK1BwD1cy1cuHyc=
 github.com/ipfs/go-path v0.0.1/go.mod h1:ztzG4iSBN2/CJa93rtHAv/I+mpK+BGALeUoJzhclhw0=
 github.com/ipfs/go-path v0.0.2 h1:Nm9g9GCo3XoSASPh2cGEW9eGPt8xh0QzA1VNO69NTMs=

package.json

@@ -531,9 +531,9 @@
     },
     {
       "author": "hsanjuan",
-      "hash": "QmUpYgeayfk3b83aYfNzVXwJJvyYsBrtKJtsnPfyjbgcgb",
+      "hash": "QmX1nx1HZoyRKpp1d5L52kvcfqMbdbV6k4LFFrCEv7wnpH",
       "name": "go-mfs",
-      "version": "0.1.51"
+      "version": "0.1.52"
     },
     {
       "author": "kevina",