feat: Add function that applies netmask to ip

schemas/cluster.json

@@ -140,12 +140,11 @@
             "array",
             "null"
           ],
+          "default": null,
           "items": {
             "type": "string",
             "format": "ipv4"
-          },
-          "maxItems": 2,
-          "minItems": 2
+          }
         },
         "gateway": {
           "type": [

schemas/node.json

@@ -136,12 +136,11 @@
             "array",
             "null"
           ],
+          "default": null,
           "items": {
             "type": "string",
             "format": "ipv4"
-          },
-          "maxItems": 2,
-          "minItems": 2
+          }
         },
         "gateway": {
           "type": [

src/environment.rs

@@ -1,8 +1,8 @@
 use std::net::Ipv4Addr;
 use std::ops::Deref;
 use std::path::{Path, PathBuf};
-use std::str::FromStr;
 
+use minijinja::value::ViaDeserialize;
 use minijinja::{AutoEscape, Environment, path_loader};
 use walkdir::WalkDir;
 
@@ -16,6 +16,13 @@ pub struct PathEnvironment<'a> {
     path: PathBuf,
 }
 
+fn apply_netmask(
+    ip: ViaDeserialize<Ipv4Addr>,
+    netmask: ViaDeserialize<Ipv4Addr>,
+) -> Result<String, minijinja::Error> {
+    Ok((*ip & *netmask).to_string())
+}
+
 impl<'a> PathEnvironment<'a> {
     pub fn new(path: &Path) -> Self {
         let mut env = Environment::new();
@@ -27,10 +34,7 @@ impl<'a> PathEnvironment<'a> {
         env.set_auto_escape_callback(|_| AutoEscape::None);
 
         // Add filters
-        env.add_filter("to_prefix", |netmask: String| {
-            let netmask = Ipv4Addr::from_str(&netmask).map_err(|err| {
-                minijinja::Error::new(minijinja::ErrorKind::InvalidOperation, err.to_string())
-            })?;
+        env.add_filter("to_prefix", |netmask: ViaDeserialize<Ipv4Addr>| {
             let mask = netmask.to_bits();
             let prefix = mask.leading_ones();
 
@@ -44,6 +48,8 @@ impl<'a> PathEnvironment<'a> {
             }
         });
 
+        env.add_function("apply_netmask", apply_netmask);
+
         // Helper function for getting the path to kubeconfig files
         env.add_filter("kubeconfig", move |names: Vec<String>| {
             names

src/node.rs

@@ -53,7 +53,8 @@ struct Network {
     ip: Ipv4Addr,
     netmask: Ipv4Addr,
     gateway: Ipv4Addr,
-    dns: [Ipv4Addr; 2],
+    #[serde(default)]
+    dns: Option<Vec<Ipv4Addr>>,
     #[optional_rename(OptionalTailscale)]
     #[optional_wrap]
     tailscale: Tailscale,