add shell command to list all collections

weed/server/filer_grpc_server.go

@@ -14,7 +14,6 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/operation"
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
-	"github.com/chrislusf/seaweedfs/weed/util"
 )
 
 func (fs *FilerServer) LookupDirectoryEntry(ctx context.Context, req *filer_pb.LookupDirectoryEntryRequest) (*filer_pb.LookupDirectoryEntryResponse, error) {
@@ -239,9 +238,7 @@ func (fs *FilerServer) AssignVolume(ctx context.Context, req *filer_pb.AssignVol
 
 func (fs *FilerServer) DeleteCollection(ctx context.Context, req *filer_pb.DeleteCollectionRequest) (resp *filer_pb.DeleteCollectionResponse, err error) {
 
-	for _, master := range fs.option.Masters {
-		_, err = util.Get(fmt.Sprintf("http://%s/col/delete?collection=%s", master, req.Collection))
-	}
+	err = fs.filer.MasterClient.CollectionDelete(ctx, req.GetCollection())
 
 	return &filer_pb.DeleteCollectionResponse{}, err
 }