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From: Christian Ebner <c.ebner@proxmox.com>
To: pbs-devel@lists.proxmox.com
Date: Wed, 28 Feb 2024 15:02:09 +0100
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Subject: [pbs-devel] [RFC proxmox-backup 19/36] api: datastore: refactor
getting local chunk reader
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Move the code to get the local chunk reader to a dedicated function
to make it reusable. The same code is required to get the local chunk
reader for the payload stream for split stream archives.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
---
src/api2/admin/datastore.rs | 37 +++++++++++++++++++++++++------------
1 file changed, 25 insertions(+), 12 deletions(-)
diff --git a/src/api2/admin/datastore.rs b/src/api2/admin/datastore.rs
index a95031e7..843b9ce5 100644
--- a/src/api2/admin/datastore.rs
+++ b/src/api2/admin/datastore.rs
@@ -1653,6 +1653,29 @@ pub const API_METHOD_PXAR_FILE_DOWNLOAD: ApiMethod = ApiMethod::new(
&Permission::Anybody,
);
+fn get_local_pxar_reader(
+ datastore: Arc<DataStore>,
+ manifest: &BackupManifest,
+ backup_dir: &BackupDir,
+ pxar_name: &str,
+) -> Result<(LocalDynamicReadAt<LocalChunkReader>, u64), Error> {
+ let mut path = datastore.base_path();
+ path.push(backup_dir.relative_path());
+ path.push(pxar_name);
+
+ let index = DynamicIndexReader::open(&path)
+ .map_err(|err| format_err!("unable to read dynamic index '{:?}' - {}", &path, err))?;
+
+ let (csum, size) = index.compute_csum();
+ manifest.verify_file(pxar_name, &csum, size)?;
+
+ let chunk_reader = LocalChunkReader::new(datastore, None, CryptMode::None);
+ let reader = BufferedDynamicReader::new(index, chunk_reader);
+ let archive_size = reader.archive_size();
+
+ Ok((LocalDynamicReadAt::new(reader), archive_size))
+}
+
pub fn pxar_file_download(
_parts: Parts,
_req_body: Body,
@@ -1697,20 +1720,10 @@ pub fn pxar_file_download(
}
}
- let mut path = datastore.base_path();
- path.push(backup_dir.relative_path());
- path.push(pxar_name);
+ let (reader, archive_size) =
+ get_local_pxar_reader(datastore.clone(), &manifest, &backup_dir, &pxar_name)?;
- let index = DynamicIndexReader::open(&path)
- .map_err(|err| format_err!("unable to read dynamic index '{:?}' - {}", &path, err))?;
- let (csum, size) = index.compute_csum();
- manifest.verify_file(pxar_name, &csum, size)?;
-
- let chunk_reader = LocalChunkReader::new(datastore, None, CryptMode::None);
- let reader = BufferedDynamicReader::new(index, chunk_reader);
- let archive_size = reader.archive_size();
- let reader = LocalDynamicReadAt::new(reader);
let decoder = Accessor::new(reader, archive_size).await?;
let root = decoder.open_root().await?;
--
2.39.2