[pbs-devel] [PATCH pxar] encoder: flush after writing last entry

[Dominik Csapak]

some writers may need to be flushed to write out all data

Signed-off-by: Dominik Csapak <d.csapak at proxmox.com>
---
for now, it is not needed because in all code paths we use it
the writers do not need to be flushed, but there is no guarantee
it will stay that way

 src/encoder/mod.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/encoder/mod.rs b/src/encoder/mod.rs
index 1004efa..c114657 100644
--- a/src/encoder/mod.rs
+++ b/src/encoder/mod.rs
@@ -83,6 +83,13 @@ async fn seq_write<T: SeqWrite + ?Sized>(
     Ok(put)
 }
 
+/// awaitable version of 'poll_flush'.
+async fn flush<T: SeqWrite + ?Sized>(
+    output: &mut T,
+) -> io::Result<()> {
+    poll_fn(|cx| unsafe { Pin::new_unchecked(&mut *output).poll_flush(cx) }).await
+}
+
 /// Write the entire contents of a buffer, handling short writes.
 async fn seq_write_all<T: SeqWrite + ?Sized>(
     output: &mut T,
@@ -715,6 +722,8 @@ impl<'a, T: SeqWrite + 'a> EncoderImpl<'a, T> {
         )
         .await?;
 
+        flush(self.output.as_mut()).await?;
+
         // done up here because of the self-borrow and to propagate
         let end_offset = self.position();
 
-- 
2.20.1