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From: Christian Ebner <c.ebner@proxmox.com>
To: pbs-devel@lists.proxmox.com
Date: Wed,  5 Jun 2024 12:53:44 +0200
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Subject: [pbs-devel] [PATCH v9 proxmox-backup 26/58] specs: add backup
 detection mode specification
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Adds the specification for switching the detection mode used to
identify regular files which changed since a reference backup run.

Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
---
changes since version 8:
- no changes

 pbs-client/src/backup_specification.rs | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/pbs-client/src/backup_specification.rs b/pbs-client/src/backup_specification.rs
index 619a3a9da..66bf71965 100644
--- a/pbs-client/src/backup_specification.rs
+++ b/pbs-client/src/backup_specification.rs
@@ -1,4 +1,5 @@
 use anyhow::{bail, Error};
+use serde::{Deserialize, Serialize};
 
 use proxmox_schema::*;
 
@@ -45,3 +46,28 @@ pub fn parse_backup_specification(value: &str) -> Result<BackupSpecification, Er
 
     bail!("unable to parse backup source specification '{}'", value);
 }
+
+#[api]
+#[derive(Default, Deserialize, Serialize)]
+#[serde(rename_all = "lowercase")]
+/// Mode to detect file changes since last backup run
+pub enum BackupDetectionMode {
+    /// Encode backup as self contained pxar archive
+    #[default]
+    Default,
+    /// Split backup mode, re-encode payload data
+    Data,
+    /// Compare metadata, reuse payload chunks if metadata unchanged
+    Metadata,
+}
+
+impl BackupDetectionMode {
+    /// Selected mode is data based file change detection with split meta/payload streams
+    pub fn is_data(&self) -> bool {
+        matches!(self, Self::Data)
+    }
+    /// Selected mode is metadata based file change detection
+    pub fn is_metadata(&self) -> bool {
+        matches!(self, Self::Metadata)
+    }
+}
-- 
2.39.2



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