19088: Export collection/project properties as x-amz-meta tags.

[arvados.git] / sdk / go / arvados / fs_deferred.go

diff --git a/sdk/go/arvados/fs_deferred.go b/sdk/go/arvados/fs_deferred.go
index 439eaec7c2a5dbde49f2fd2851551238a22166ec..07cf760034d050814a211b074e1ae3fa51b74c59 100644 (file)
--- a/sdk/go/arvados/fs_deferred.go
+++ b/sdk/go/arvados/fs_deferred.go
@@ -24,6 +24,7 @@ func deferredCollectionFS(fs FileSystem, parent inode, coll Collection) inode {
                        name:    coll.Name,
                        modTime: modTime,
                        mode:    0755 | os.ModeDir,
+                       sys:     &coll,
                },
        }
        return &deferrednode{wrapped: placeholder, create: func() inode {
@@ -32,14 +33,14 @@ func deferredCollectionFS(fs FileSystem, parent inode, coll Collection) inode {
                        log.Printf("BUG: unhandled error: %s", err)
                        return placeholder
                }
-               cfs, err := coll.FileSystem(fs, fs)
+               newfs, err := coll.FileSystem(fs, fs)
                if err != nil {
                        log.Printf("BUG: unhandled error: %s", err)
                        return placeholder
                }
-               root := cfs.rootnode()
-               root.SetParent(parent, coll.Name)
-               return root
+               cfs := newfs.(*collectionFileSystem)
+               cfs.SetParent(parent, coll.Name)
+               return cfs
        }}
 }
 
@@ -87,6 +88,19 @@ func (dn *deferrednode) Child(name string, replace func(inode) (inode, error)) (
        return dn.realinode().Child(name, replace)
 }
 
+// Sync is a no-op if the real inode hasn't even been created yet.
+func (dn *deferrednode) Sync() error {
+       dn.mtx.Lock()
+       defer dn.mtx.Unlock()
+       if !dn.created {
+               return nil
+       } else if syncer, ok := dn.wrapped.(syncer); ok {
+               return syncer.Sync()
+       } else {
+               return ErrInvalidOperation
+       }
+}
+
 func (dn *deferrednode) Truncate(size int64) error       { return dn.realinode().Truncate(size) }
 func (dn *deferrednode) SetParent(p inode, name string)  { dn.realinode().SetParent(p, name) }
 func (dn *deferrednode) IsDir() bool                     { return dn.currentinode().IsDir() }
@@ -99,3 +113,6 @@ func (dn *deferrednode) RLock()                          { dn.realinode().RLock(
 func (dn *deferrednode) RUnlock()                        { dn.realinode().RUnlock() }
 func (dn *deferrednode) FS() FileSystem                  { return dn.currentinode().FS() }
 func (dn *deferrednode) Parent() inode                   { return dn.currentinode().Parent() }
+func (dn *deferrednode) MemorySize() int64               { return dn.currentinode().MemorySize() }
+func (dn *deferrednode) Snapshot() (inode, error)        { return dn.realinode().Snapshot() }
+func (dn *deferrednode) Splice(repl inode) error         { return dn.realinode().Splice(repl) }