Fix ListStorageSpaces for ocm

Currently there are no mountpoints for federated shares. We just return
an empty list on the ListStorageSpaces request.

Related: owncloud/ocis#10689

pkg/ocm/storage/received/ocm.go

@@ -29,11 +29,9 @@ import (
 	"net/url"
 	"path/filepath"
 	"regexp"
-	"strings"
 
 	gateway "github.com/cs3org/go-cs3apis/cs3/gateway/v1beta1"
 	userpb "github.com/cs3org/go-cs3apis/cs3/identity/user/v1beta1"
-	userv1beta1 "github.com/cs3org/go-cs3apis/cs3/identity/user/v1beta1"
 	rpc "github.com/cs3org/go-cs3apis/cs3/rpc/v1beta1"
 	ocmpb "github.com/cs3org/go-cs3apis/cs3/sharing/ocm/v1beta1"
 	provider "github.com/cs3org/go-cs3apis/cs3/storage/provider/v1beta1"
@@ -49,7 +47,6 @@ import (
 	"github.com/cs3org/reva/v2/pkg/sharedconf"
 	"github.com/cs3org/reva/v2/pkg/storage"
 	"github.com/cs3org/reva/v2/pkg/storage/fs/registry"
-	"github.com/cs3org/reva/v2/pkg/storagespace"
 	"github.com/cs3org/reva/v2/pkg/utils"
 	"github.com/cs3org/reva/v2/pkg/utils/cfg"
 )
@@ -492,84 +489,8 @@ func (d *driver) Unlock(ctx context.Context, ref *provider.Reference, lock *prov
 }
 
 func (d *driver) ListStorageSpaces(ctx context.Context, filters []*provider.ListStorageSpacesRequest_Filter, _ bool) ([]*provider.StorageSpace, error) {
-	spaceTypes := map[string]struct{}{}
-	var exists = struct{}{}
-	appendTypes := []string{}
-	for _, f := range filters {
-		if f.Type == provider.ListStorageSpacesRequest_Filter_TYPE_SPACE_TYPE {
-			spaceType := f.GetSpaceType()
-			if spaceType == "+mountpoint" {
-				appendTypes = append(appendTypes, strings.TrimPrefix(spaceType, "+"))
-				continue
-			}
-			spaceTypes[spaceType] = exists
-		}
-	}
-
-	lrsRes, err := d.gateway.ListReceivedOCMShares(ctx, &ocmpb.ListReceivedOCMSharesRequest{})
-	if err != nil {
-		return nil, err
-	}
-	// FIXME This might have to be ListOCMShares
-	// these are grants
-
-	lsRes, err := d.gateway.ListOCMShares(ctx, &ocmpb.ListOCMSharesRequest{})
-	if err != nil {
-		return nil, err
-	}
-
-	if len(spaceTypes) == 0 {
-		spaceTypes["mountpoint"] = exists
-	}
-	for _, s := range appendTypes {
-		spaceTypes[s] = exists
-	}
-
-	spaces := []*provider.StorageSpace{}
-	for k := range spaceTypes {
-		if k == "mountpoint" {
-			for _, share := range lrsRes.Shares {
-				root := &provider.ResourceId{
-					StorageId: utils.OCMStorageProviderID,
-					SpaceId:   share.Id.OpaqueId,
-					OpaqueId:  share.Id.OpaqueId,
-				}
-				space := &provider.StorageSpace{
-					Id: &provider.StorageSpaceId{
-						OpaqueId: storagespace.FormatResourceID(root),
-					},
-					SpaceType: "mountpoint",
-					Owner: &userv1beta1.User{
-						Id: share.Grantee.GetUserId(),
-					},
-					Root: root,
-				}
-
-				spaces = append(spaces, space)
-			}
-			for _, share := range lsRes.Shares {
-				root := &provider.ResourceId{
-					StorageId: utils.OCMStorageProviderID,
-					SpaceId:   share.Id.OpaqueId,
-					OpaqueId:  share.Id.OpaqueId,
-				}
-				space := &provider.StorageSpace{
-					Id: &provider.StorageSpaceId{
-						OpaqueId: storagespace.FormatResourceID(root),
-					},
-					SpaceType: "mountpoint",
-					Owner: &userv1beta1.User{
-						Id: share.Grantee.GetUserId(),
-					},
-					Root: root,
-				}
-
-				spaces = append(spaces, space)
-			}
-		}
-	}
-
-	return spaces, nil
+	// ocm doesn't create any mountpoints, so there are not spaces to return here
+	return []*provider.StorageSpace{}, nil
 }
 
 func (d *driver) CreateStorageSpace(ctx context.Context, req *provider.CreateStorageSpaceRequest) (*provider.CreateStorageSpaceResponse, error) {