Fix Stat() for eos storage provider

changelog/unreleased/stat-eos.md

@@ -0,0 +1,8 @@
+Bugfix: Fix Stat() for EOS storage provider
+
+This change fixes the convertion between the eosclient.FileInfo
+to ResourceInfo, in which the field ArbitraryMetadata was missing.
+Moreover, to be consistent with SetArbitraryMetadata() EOS implementation,
+all the "user." prefix are stripped out from the xattrs. 
+
+https://github.com/cs3org/reva/pull/2074

pkg/eosclient/eosbinary/eosbinary.go

@@ -934,6 +934,7 @@ func (c *Client) parseFileInfo(raw string) (*eosclient.FileInfo, error) {
 	name := line[0:length]
 
 	kv := make(map[string]string)
+	attrs := make(map[string]string)
 	// strip trailing slash
 	kv["file"] = strings.TrimSuffix(name, "/")
 
@@ -948,17 +949,17 @@ func (c *Client) parseFileInfo(raw string) (*eosclient.FileInfo, error) {
 			// handle xattrn and xattrv special cases
 			switch {
 			case partsByEqual[0] == "xattrn":
-				previousXAttr = partsByEqual[1]
+				previousXAttr = strings.Replace(partsByEqual[1], "user.", "", 1)
 			case partsByEqual[0] == "xattrv":
-				kv[previousXAttr] = partsByEqual[1]
+				attrs[previousXAttr] = partsByEqual[1]
 				previousXAttr = ""
 			default:
 				kv[partsByEqual[0]] = partsByEqual[1]
 
 			}
 		}
 	}
-	fi, err := c.mapToFileInfo(kv)
+	fi, err := c.mapToFileInfo(kv, attrs)
 	if err != nil {
 		return nil, err
 	}
@@ -968,7 +969,7 @@ func (c *Client) parseFileInfo(raw string) (*eosclient.FileInfo, error) {
 // mapToFileInfo converts the dictionary to an usable structure.
 // The kv has format:
 // map[sys.forced.space:default files:0 mode:42555 ino:5 sys.forced.blocksize:4k sys.forced.layout:replica uid:0 fid:5 sys.forced.blockchecksum:crc32c sys.recycle:/eos/backup/proc/recycle/ fxid:00000005 pid:1 etag:5:0.000 keylength.file:4 file:/eos treesize:1931593933849913 container:3 gid:0 mtime:1498571294.108614409 ctime:1460121992.294326762 pxid:00000001 sys.forced.checksum:adler sys.forced.nstripes:2]
-func (c *Client) mapToFileInfo(kv map[string]string) (*eosclient.FileInfo, error) {
+func (c *Client) mapToFileInfo(kv, attrs map[string]string) (*eosclient.FileInfo, error) {
 	inode, err := strconv.ParseUint(kv["ino"], 10, 64)
 	if err != nil {
 		return nil, err
@@ -1055,11 +1056,11 @@ func (c *Client) mapToFileInfo(kv map[string]string) (*eosclient.FileInfo, error
 		}
 	}
 
-	sysACL, err := acl.Parse(kv["sys.acl"], acl.ShortTextForm)
+	sysACL, err := acl.Parse(attrs["sys.acl"], acl.ShortTextForm)
 	if err != nil {
 		return nil, err
 	}
-	lwACLStr, ok := kv[lwShareAttrKey]
+	lwACLStr, ok := attrs[lwShareAttrKey]
 	if ok {
 		lwAcls, err := acl.Parse(lwACLStr, acl.ShortTextForm)
 		if err != nil {
@@ -1088,7 +1089,7 @@ func (c *Client) mapToFileInfo(kv map[string]string) (*eosclient.FileInfo, error
 		Instance:   c.opt.URL,
 		SysACL:     sysACL,
 		TreeCount:  treeCount,
-		Attrs:      kv,
+		Attrs:      attrs,
 		XS:         xs,
 	}
 

pkg/storage/utils/eosfs/eosfs.go

@@ -1676,6 +1676,14 @@ func (fs *eosfs) convert(ctx context.Context, eosFileInfo *eosclient.FileInfo) (
 		}
 	}
 
+	// filter 'sys' attrs
+	filteredAttrs := make(map[string]string)
+	for k, v := range eosFileInfo.Attrs {
+		if !strings.HasPrefix(k, "sys") {
+			filteredAttrs[k] = v
+		}
+	}
+
 	info := &provider.ResourceInfo{
 		Id:            &provider.ResourceId{OpaqueId: fmt.Sprintf("%d", eosFileInfo.Inode)},
 		Path:          path,
@@ -1697,6 +1705,9 @@ func (fs *eosfs) convert(ctx context.Context, eosFileInfo *eosclient.FileInfo) (
 				},
 			},
 		},
+		ArbitraryMetadata: &provider.ArbitraryMetadata{
+			Metadata: filteredAttrs,
+		},
 	}
 
 	if eosFileInfo.IsDir {