[pbs-devel] [PATCH v8 pxar 10/69] encoder: add payload position capability

[Christian Ebner]

Allows to read the current payload offset from the dedicated payload
input stream. This is required to get the current offset for calculation
of forced boundaries in the proxmox-backup-client, when injecting reused
payload chunks into the payload stream.

Signed-off-by: Christian Ebner <c.ebner at proxmox.com>
---
changes since version 7:
- no changes

changes since version 6:
- no changes

 src/encoder/aio.rs  | 5 +++++
 src/encoder/mod.rs  | 4 ++++
 src/encoder/sync.rs | 5 +++++
 3 files changed, 14 insertions(+)

diff --git a/src/encoder/aio.rs b/src/encoder/aio.rs
index 23b2bbf..524c281 100644
--- a/src/encoder/aio.rs
+++ b/src/encoder/aio.rs
@@ -75,6 +75,11 @@ impl<'a, T: SeqWrite + 'a> Encoder<'a, T> {
         })
     }
 
+    /// Get current position for payload stream
+    pub fn payload_position(&self) -> io::Result<PayloadOffset> {
+        self.inner.payload_position()
+    }
+
     // /// Convenience shortcut to add a *regular* file by path including its contents to the archive.
     // pub async fn add_file<P, F>(
     //     &mut self,
diff --git a/src/encoder/mod.rs b/src/encoder/mod.rs
index 31933fc..a3a6e9a 100644
--- a/src/encoder/mod.rs
+++ b/src/encoder/mod.rs
@@ -524,6 +524,10 @@ impl<'a, T: SeqWrite + 'a> EncoderImpl<'a, T> {
         Ok(offset)
     }
 
+    pub fn payload_position(&self) -> io::Result<PayloadOffset> {
+        Ok(PayloadOffset(self.state()?.payload_position()))
+    }
+
     /// Encode a payload reference pointing to given offset in the separate payload output
     ///
     /// Returns a file offset usable with `add_hardlink` or with error if the encoder instance has
diff --git a/src/encoder/sync.rs b/src/encoder/sync.rs
index 62bb5e1..75650e4 100644
--- a/src/encoder/sync.rs
+++ b/src/encoder/sync.rs
@@ -102,6 +102,11 @@ impl<'a, T: SeqWrite + 'a> Encoder<'a, T> {
         ))
     }
 
+    /// Get current payload position for payload stream
+    pub fn payload_position(&self) -> io::Result<PayloadOffset> {
+        self.inner.payload_position()
+    }
+
     /// Encode a payload reference pointing to given offset in the separate payload output
     ///
     /// Returns with error if the encoder instance has no separate payload output or encoding
-- 
2.39.2