Add loadBalancerClass field to ListenerClass.spec (#986)

* Add loadBalancerClass field to ListenerClass.spec

See stackabletech/listener-operator#285

* Changelog

* Mention loadBalancerAllocateNodePorts in the changelog

Author: nightkr

crates/stackable-operator/CHANGELOG.md

@@ -4,10 +4,15 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+### Added
+
+- Added `ListenerClass.spec.loadBalancerClass` and `.loadBalancerAllocateNodePorts` fields ([#986]).
+
 ### Removed
 
 - Remove instrumenation from uninteresting funtions ([#1023]).
 
+[#986]: https://github.com/stackabletech/operator-rs/pull/986
 [#1023]: https://github.com/stackabletech/operator-rs/pull/1023
 
 ## [0.93.1] - 2025-05-20

crates/stackable-operator/src/crd/listener/class/mod.rs

@@ -31,6 +31,21 @@ pub mod versioned {
     pub struct ListenerClassSpec {
         pub service_type: core_v1alpha1::ServiceType,
 
+        /// Configures whether a LoadBalancer service should also allocate node ports (like NodePort).
+        ///
+        /// Ignored unless serviceType is LoadBalancer.
+        // TODO: v1alpha2: Move into ServiceType::LoadBalancer
+        #[serde(default = "ListenerClassSpec::default_load_balancer_allocate_node_ports")]
+        pub load_balancer_allocate_node_ports: bool,
+
+        /// Configures a custom Service loadBalancerClass, which can be used to access secondary
+        /// load balancer controllers that are installed in the cluster, or to provision
+        /// custom addresses manually.
+        ///
+        /// Ignored unless serviceType is LoadBalancer.
+        // TODO: v1alpha2: Move into ServiceType::LoadBalancer
+        pub load_balancer_class: Option<String>,
+
         /// Annotations that should be added to the Service object.
         #[serde(default)]
         pub service_annotations: BTreeMap<String, String>,

crates/stackable-operator/src/crd/listener/class/v1alpha1_impl.rs

@@ -12,6 +12,10 @@ impl ListenerClassSpec {
         PreferredAddressType::HostnameConservative
     }
 
+    pub(super) const fn default_load_balancer_allocate_node_ports() -> bool {
+        true
+    }
+
     /// Resolves [`Self::preferred_address_type`]'s "smart" modes depending on the rest of `self`.
     pub fn resolve_preferred_address_type(&self) -> AddressType {
         self.preferred_address_type.resolve(self)