[pve-devel] [PATCH installer v3 05/15] common: setup: simplify network address list serialization

[Christoph Heiss]

Option<Vec<..>> is redundant in combination with #[serde(default)],
as the latter already defaults to an empty Vec<..> if the key does not
exist.

No functional changes.

Signed-off-by: Christoph Heiss <c.heiss at proxmox.com>
---
Changes v2 -> v3:
  * rebased

Changes v1 -> v2:
  * no changes

 proxmox-installer-common/src/options.rs | 47 ++++++++++++-------------
 proxmox-installer-common/src/setup.rs   |  6 ++--
 2 files changed, 25 insertions(+), 28 deletions(-)

diff --git a/proxmox-installer-common/src/options.rs b/proxmox-installer-common/src/options.rs
index 263bcfb..fa91060 100644
--- a/proxmox-installer-common/src/options.rs
+++ b/proxmox-installer-common/src/options.rs
@@ -514,26 +514,24 @@ impl NetworkOptions {
         }
 
         if let Some(routes) = &network.routes {
-            let mut filled = false;
             if let Some(gw) = &routes.gateway4
-                && let Some(iface) = network.interfaces.get(&gw.dev) {
-                    this.ifname.clone_from(&iface.name);
-                    if let Some(addresses) = &iface.addresses
-                        && let Some(addr) = addresses.iter().find(|addr| addr.is_ipv4()) {
-                            this.gateway = gw.gateway;
-                            this.address = addr.clone();
-                            filled = true;
-                        }
+                && let Some(iface) = network.interfaces.get(&gw.dev)
+            {
+                // we got some ipv4 connectivity, so use that
+                this.ifname.clone_from(&iface.name);
+                if let Some(addr) = iface.addresses.iter().find(|addr| addr.is_ipv4()) {
+                    this.gateway = gw.gateway;
+                    this.address = addr.clone();
                 }
-            if !filled
-                && let Some(gw) = &routes.gateway6
-                    && let Some(iface) = network.interfaces.get(&gw.dev)
-                        && let Some(addresses) = &iface.addresses
-                            && let Some(addr) = addresses.iter().find(|addr| addr.is_ipv6()) {
-                                this.ifname.clone_from(&iface.name);
-                                this.gateway = gw.gateway;
-                                this.address = addr.clone();
-                            }
+            } else if let Some(gw) = &routes.gateway6
+                && let Some(iface) = network.interfaces.get(&gw.dev)
+                && let Some(addr) = iface.addresses.iter().find(|addr| addr.is_ipv6())
+            {
+                // no ipv4, but ipv6 connectivity
+                this.ifname.clone_from(&iface.name);
+                this.gateway = gw.gateway;
+                this.address = addr.clone();
+            }
         }
 
         // In case no there are no routes defined at all (e.g. no DHCP lease),
@@ -541,9 +539,10 @@ impl NetworkOptions {
         // NIC should always be present here, as the installation will abort
         // earlier in that case, so use the first one enumerated.
         if this.ifname.is_empty()
-            && let Some(iface) = network.interfaces.values().min_by_key(|v| v.index) {
-                this.ifname.clone_from(&iface.name);
-            }
+            && let Some(iface) = network.interfaces.values().min_by_key(|v| v.index)
+        {
+            this.ifname.clone_from(&iface.name);
+        }
 
         this
     }
@@ -672,9 +671,7 @@ mod tests {
                 state: InterfaceState::Up,
                 driver: "dummy".to_owned(),
                 mac: "01:23:45:67:89:ab".to_owned(),
-                addresses: Some(vec![
-                    CidrAddress::new(Ipv4Addr::new(192, 168, 0, 2), 24).unwrap(),
-                ]),
+                addresses: vec![CidrAddress::new(Ipv4Addr::new(192, 168, 0, 2), 24).unwrap()],
             },
         );
 
@@ -800,7 +797,7 @@ mod tests {
                 state: InterfaceState::Up,
                 driver: "dummy".to_owned(),
                 mac: "01:23:45:67:89:ab".to_owned(),
-                addresses: None,
+                addresses: vec![],
             },
         );
 
diff --git a/proxmox-installer-common/src/setup.rs b/proxmox-installer-common/src/setup.rs
index 4fda39d..4873fff 100644
--- a/proxmox-installer-common/src/setup.rs
+++ b/proxmox-installer-common/src/setup.rs
@@ -321,7 +321,7 @@ where
         .collect())
 }
 
-fn deserialize_cidr_list<'de, D>(deserializer: D) -> Result<Option<Vec<CidrAddress>>, D::Error>
+fn deserialize_cidr_list<'de, D>(deserializer: D) -> Result<Vec<CidrAddress>, D::Error>
 where
     D: Deserializer<'de>,
 {
@@ -347,7 +347,7 @@ where
         );
     }
 
-    Ok(Some(result))
+    Ok(result)
 }
 
 fn serialize_as_display<S, T>(value: &T, serializer: S) -> Result<S::Ok, S::Error>
@@ -478,7 +478,7 @@ pub struct Interface {
 
     #[serde(default)]
     #[serde(deserialize_with = "deserialize_cidr_list")]
-    pub addresses: Option<Vec<CidrAddress>>,
+    pub addresses: Vec<CidrAddress>,
 }
 
 impl Interface {
-- 
2.51.0