feat: Subscription for cnpg-operator fixed default values, tested and added to operatorhub example.

examples/operatorhub_catalog/src/main.rs

@@ -2,19 +2,19 @@ use std::str::FromStr;
 
 use harmony::{
     inventory::Inventory,
-    modules::{k8s::apps::OperatorHubCatalogSourceScore, tenant::TenantScore},
-    topology::{K8sAnywhereTopology, tenant::TenantConfig},
+    modules::{k8s::apps::OperatorHubCatalogSourceScore, postgresql::CloudNativePgOperatorScore},
+    topology::K8sAnywhereTopology,
 };
-use harmony_types::id::Id;
 
 #[tokio::main]
 async fn main() {
     let operatorhub_catalog = OperatorHubCatalogSourceScore::default();
+    let cnpg_operator = CloudNativePgOperatorScore::default();
 
     harmony_cli::run(
         Inventory::autoload(),
         K8sAnywhereTopology::from_env(),
-        vec![Box::new(operatorhub_catalog)],
+        vec![Box::new(operatorhub_catalog), Box::new(cnpg_operator)],
         None,
     )
     .await

harmony/src/modules/postgresql/operator.rs

@@ -7,6 +7,42 @@ use crate::modules::k8s::resource::K8sResourceScore;
 use crate::score::Score;
 use crate::topology::{K8sclient, Topology};
 
+/// Install the CloudNativePg (CNPG) Operator via an OperatorHub `Subscription`.
+///
+/// This Score creates a a `Subscription` Custom Resource in the specified namespace.
+///
+/// The default implementation pulls the `cloudnative-pg` operator from the
+/// `operatorhubio-catalog` source.
+///
+/// # Goals
+/// - Deploy the CNPG Operator to manage PostgreSQL clusters in OpenShift/OKD environments.
+///
+/// # Usage
+/// ```
+/// use harmony::modules::postgresql::CloudNativePgOperatorScore;
+/// let score = CloudNativePgOperatorScore::default();
+/// ```
+///
+/// Or, you can take control of most relevant fiedls this way :
+///
+/// ```
+/// use harmony::modules::postgresql::CloudNativePgOperatorScore;
+///
+/// let score = CloudNativePgOperatorScore {
+///     namespace: "custom-cnpg-namespace".to_string(),
+///     channel: "unstable-i-want-bleedingedge-v498437".to_string(),
+///     install_plan_approval: "Manual".to_string(),
+///     source: "operatorhubio-catalog-but-different".to_string(),
+///     source_namespace: "i-customize-everything-marketplace".to_string(),
+/// };
+/// ```
+///
+/// # Limitations
+/// - **OperatorHub dependency**: Requires OperatorHub catalog sources (e.g., `operatorhubio-catalog` in `openshift-marketplace`).
+/// - **OKD/OpenShift assumption**: Catalog/source names and namespaces are hardcoded for OKD-like setups; adjust for upstream OpenShift.
+/// - **Hardcoded values in Default implementation**: Operator name (`cloudnative-pg`), channel (`stable-v1`), automatic install plan approval.
+/// - **No config options**: Does not support custom `SubscriptionConfig` (env vars, node selectors, tolerations).
+/// - **Single namespace**: Targets one namespace per score instance.
 #[derive(Debug, Clone, Serialize)]
 pub struct CloudNativePgOperatorScore {
     pub namespace: String,
@@ -19,8 +55,8 @@ pub struct CloudNativePgOperatorScore {
 impl Default for CloudNativePgOperatorScore {
     fn default() -> Self {
         Self {
-            namespace: "cnpg-system".to_string(),
-            channel: "stable".to_string(),
+            namespace: "openshift-operators".to_string(),
+            channel: "stable-v1".to_string(),
             install_plan_approval: "Automatic".to_string(),
             source: "operatorhubio-catalog".to_string(),
             source_namespace: "openshift-marketplace".to_string(),