[pbs-devel] [PATCH proxmox-backup 1/2] api types: version: add helper for min version checks

[Christian Ebner]

Add a helper method to the ApiVersion type to reduce possible errors
when comparing api versions for feature compatibility checks.

Signed-off-by: Christian Ebner <c.ebner at proxmox.com>
---
 pbs-api-types/src/version.rs | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/pbs-api-types/src/version.rs b/pbs-api-types/src/version.rs
index 80f87e372..5f8efb663 100644
--- a/pbs-api-types/src/version.rs
+++ b/pbs-api-types/src/version.rs
@@ -1,4 +1,5 @@
 //! Defines the types for the api version info endpoint
+use std::cmp::Ordering;
 use std::convert::TryFrom;
 
 use anyhow::{format_err, Context};
@@ -68,3 +69,35 @@ impl TryFrom<ApiVersionInfo> for ApiVersion {
         })
     }
 }
+
+impl ApiVersion {
+    pub fn new(
+        major: ApiVersionMajor,
+        minor: ApiVersionMinor,
+        release: ApiVersionRelease,
+        repoid: String,
+    ) -> Self {
+        Self {
+            major,
+            minor,
+            release,
+            repoid,
+        }
+    }
+
+    pub fn is_min_required(&self, version: ApiVersion) -> bool {
+        match (
+            version.major.cmp(&self.major),
+            version.minor.cmp(&self.minor),
+            version.release.cmp(&self.release),
+        ) {
+            (Ordering::Less, _, _) => true,
+            (Ordering::Greater, _, _) => false,
+            (Ordering::Equal, Ordering::Less, _) => true,
+            (Ordering::Equal, Ordering::Greater, _) => false,
+            (Ordering::Equal, Ordering::Equal, Ordering::Less) => true,
+            (Ordering::Equal, Ordering::Equal, Ordering::Equal) => true,
+            (Ordering::Equal, Ordering::Equal, Ordering::Greater) => false,
+        }
+    }
+}
-- 
2.39.5