[pbs-devel] [PATCH v7 proxmox-backup 32/69] file restore: cover split metadata and payload archives

[Christian Ebner <c.ebner@proxmox.com>]

Attach the payload data archive as input stream to the decoder
and accessor instances for split archives.
Allows to restore contents from split archives via the
`proxmox-file-restore extract` command, by passing the metadata
archive name.

Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
---
changes since version 6:
- s/get_local_pxar_reader/get_remote_pxar_reader
- adapt to PxarVariant pxar interface

 proxmox-file-restore/src/main.rs | 22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/proxmox-file-restore/src/main.rs b/proxmox-file-restore/src/main.rs
index c9a545677..0de2b47e6 100644
--- a/proxmox-file-restore/src/main.rs
+++ b/proxmox-file-restore/src/main.rs
@@ -470,9 +470,25 @@ async fn extract(
 
     match path {
         ExtractPath::Pxar(archive_name, path) => {
-            let (reader, archive_size) =
-                get_remote_pxar_reader(&archive_name, client, &manifest, crypt_config).await?;
-            let decoder = Accessor::new(pxar::PxarVariant::Unified(reader), archive_size).await?;
+            let (reader, archive_size) = get_remote_pxar_reader(
+                &archive_name,
+                client.clone(),
+                &manifest,
+                crypt_config.clone(),
+            )
+            .await?;
+
+            let reader = if let Some(archive_base_name) = archive_name.strip_suffix(".mpxar.didx") {
+                let payload_archive_name = format!("{archive_base_name}.ppxar.didx");
+                let (payload_reader, payload_size) =
+                    get_remote_pxar_reader(&payload_archive_name, client, &manifest, crypt_config)
+                        .await?;
+                pxar::PxarVariant::Split(reader, (payload_reader, payload_size))
+            } else {
+                pxar::PxarVariant::Unified(reader)
+            };
+            let decoder = Accessor::new(reader, archive_size).await?;
+
             extract_to_target(decoder, &path, target, format, zstd).await?;
         }
         ExtractPath::VM(file, path) => {
-- 
2.39.2



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