X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/b714ab7401074991afe2fdc239c89107b3af6ca1..75b4699bdfe75c714cc4163e0f726f4987541fa1:/sdk/go/arvados/fs_base.go

diff --git a/sdk/go/arvados/fs_base.go b/sdk/go/arvados/fs_base.go
index f5916f9571..d06aba3695 100644
--- a/sdk/go/arvados/fs_base.go
+++ b/sdk/go/arvados/fs_base.go
@@ -58,6 +58,9 @@ type FileSystem interface {
 	// while locking multiple inodes.
 	locker() sync.Locker
 
+	// throttle for limiting concurrent background writers
+	throttle() *throttle
+
 	// create a new node with nil parent.
 	newNode(name string, perm os.FileMode, modTime time.Time) (node inode, err error)
 
@@ -95,8 +98,10 @@ type FileSystem interface {
 	// for all writes to finish before returning. If shortBlocks
 	// is true, flush everything; otherwise, if there's less than
 	// a full block of buffered data at the end of a stream, leave
-	// it buffered in memory in case more data can be appended.
-	Flush(shortBlocks bool) error
+	// it buffered in memory in case more data can be appended. If
+	// path is "", flush all dirs/streams; otherwise, flush only
+	// the specified dir/stream.
+	Flush(path string, shortBlocks bool) error
 }
 
 type inode interface {
@@ -298,12 +303,17 @@ type fileSystem struct {
 	root inode
 	fsBackend
 	mutex sync.Mutex
+	thr   *throttle
 }
 
 func (fs *fileSystem) rootnode() inode {
 	return fs.root
 }
 
+func (fs *fileSystem) throttle() *throttle {
+	return fs.thr
+}
+
 func (fs *fileSystem) locker() sync.Locker {
 	return &fs.mutex
 }
@@ -570,7 +580,7 @@ func (fs *fileSystem) Sync() error {
 	return ErrInvalidOperation
 }
 
-func (fs *fileSystem) Flush(bool) error {
+func (fs *fileSystem) Flush(string, bool) error {
 	log.Printf("TODO: flush fileSystem")
 	return ErrInvalidOperation
 }