[pve-devel] [PATCH proxmox-ve-rs 1/1] config: ip link struct

[Stefan Hanreich <s.hanreich@proxmox.com>]

Add a bare-bones struct for parsing the output of `ip -details -json
link show`. Currently we only require the name of the interfaces as
well as its altnames for transparently supporting altnames in the
firewall.

Signed-off-by: Stefan Hanreich <s.hanreich@proxmox.com>
---

Notes:
    There is probably a better place than proxmox-ve-config for this. I've
    put it here for now, since we have some network-related stuff in this
    repository already. Mid to short-term it would be better to extract
    all this stuff into either a separate crate or proxmox-sys. For this
    POC its fine.

 proxmox-ve-config/src/host/mod.rs     |  1 +
 proxmox-ve-config/src/host/network.rs | 35 +++++++++++++++++++++++++++
 2 files changed, 36 insertions(+)
 create mode 100644 proxmox-ve-config/src/host/network.rs

diff --git a/proxmox-ve-config/src/host/mod.rs b/proxmox-ve-config/src/host/mod.rs
index b4ab6a6..a9da919 100644
--- a/proxmox-ve-config/src/host/mod.rs
+++ b/proxmox-ve-config/src/host/mod.rs
@@ -1,2 +1,3 @@
+pub mod network;
 pub mod types;
 pub mod utils;
diff --git a/proxmox-ve-config/src/host/network.rs b/proxmox-ve-config/src/host/network.rs
new file mode 100644
index 0000000..09f4fb1
--- /dev/null
+++ b/proxmox-ve-config/src/host/network.rs
@@ -0,0 +1,35 @@
+use std::collections::HashMap;
+
+#[derive(Debug, Clone, serde::Deserialize)]
+pub struct IpLink {
+    ifname: String,
+    #[serde(default)]
+    altnames: Vec<String>,
+}
+
+#[derive(Debug, Clone, serde::Deserialize)]
+pub struct InterfaceMapping {
+    mapping: HashMap<String, String>,
+}
+
+impl std::ops::Deref for InterfaceMapping {
+    type Target = HashMap<String, String>;
+
+    fn deref(&self) -> &Self::Target {
+        &self.mapping
+    }
+}
+
+impl FromIterator<IpLink> for InterfaceMapping {
+    fn from_iter<T: IntoIterator<Item = IpLink>>(iter: T) -> Self {
+        let mut mapping = HashMap::new();
+
+        for iface in iter.into_iter() {
+            for altname in iface.altnames {
+                mapping.insert(altname, iface.ifname.clone());
+            }
+        }
+
+        Self { mapping }
+    }
+}
-- 
2.39.5


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