Add preferred address type field to ListenerClass (#885)

* Add preferred address type field to ListenerClass

See stackabletech/listener-operator#139

* Changelog

* Update crates/stackable-operator/src/commons/listener.rs

Co-authored-by: Sebastian Bernauer <sebastian.bernauer@stackable.de>

---------

Co-authored-by: Sebastian Bernauer <sebastian.bernauer@stackable.de>

Author: nightkr

crates/stackable-operator/CHANGELOG.md

@@ -7,6 +7,7 @@ All notable changes to this project will be documented in this file.
 ### Added
 
 - Re-export the `YamlSchema` trait and the `stackable-shared` crate as the `shared` module ([#883]).
+- BREAKING: Added `preferredAddressType` field to ListenerClass CRD ([#885]).
 
 ### Changed
 
@@ -17,9 +18,10 @@ All notable changes to this project will be documented in this file.
 
 - BREAKING: The `CustomResourceExt` trait doesn't provide a `generate_yaml_schema` function any
   more. Instead, use the high-level functions to write the schema to a file, write it to stdout or
-  use it as a `String`.
+  use it as a `String` ([#883]).
 
 [#883]: https://github.com/stackabletech/operator-rs/pull/883
+[#885]: https://github.com/stackabletech/operator-rs/pull/885
 
 ## [0.78.0] - 2024-09-30
 

crates/stackable-operator/src/commons/listener.rs

@@ -63,12 +63,23 @@ pub struct ListenerClassSpec {
     /// break Local mode (IONOS so far).
     #[serde(default = "ListenerClassSpec::default_service_external_traffic_policy")]
     pub service_external_traffic_policy: KubernetesTrafficPolicy,
+
+    /// Whether addresses should prefer using the IP address (`IP`) or the hostname (`Hostname`).
+    ///
+    /// The other type will be used if the preferred type is not available.
+    /// By default `Hostname` is used.
+    #[serde(default = "ListenerClassSpec::default_preferred_address_type")]
+    pub preferred_address_type: AddressType,
 }
 
 impl ListenerClassSpec {
     const fn default_service_external_traffic_policy() -> KubernetesTrafficPolicy {
         KubernetesTrafficPolicy::Local
     }
+
+    const fn default_preferred_address_type() -> AddressType {
+        AddressType::Hostname
+    }
 }
 
 /// The method used to access the services.