feat: Can now apply any k8s resource type, both namespaced or cluster scoped

harmony/src/domain/topology/k8s.rs

@@ -1,11 +1,11 @@
 use derive_new::new;
-use k8s_openapi::NamespaceResourceScope;
+use k8s_openapi::{ClusterResourceScope, NamespaceResourceScope};
 use kube::{
     Api, Client, Config, Error, Resource,
     api::PostParams,
     config::{KubeConfigOptions, Kubeconfig},
 };
-use log::error;
+use log::{debug, error, trace};
 use serde::de::DeserializeOwned;
 
 #[derive(new)]
@@ -20,52 +20,31 @@ impl K8sClient {
         })
     }
 
-    pub async fn apply_all<
-        K: Resource<Scope = NamespaceResourceScope>
-            + std::fmt::Debug
-            + Sync
-            + DeserializeOwned
-            + Default
-            + serde::Serialize
-            + Clone,
-    >(
-        &self,
-        resource: &Vec<K>,
-    ) -> Result<Vec<K>, kube::Error>
+    pub async fn apply<K>(&self, resource: &K, ns: Option<&str>) -> Result<K, Error>
     where
+        K: Resource + Clone + std::fmt::Debug + DeserializeOwned + serde::Serialize,
+        <K as Resource>::Scope: ApplyStrategy<K>,
         <K as kube::Resource>::DynamicType: Default,
     {
-        let mut result = vec![];
-        for r in resource.iter() {
-            let api: Api<K> = Api::all(self.client.clone());
-            result.push(api.create(&PostParams::default(), &r).await?);
-        }
-        Ok(result)
+        debug!("Applying resource {:?} with ns {:?}", resource.meta().name, ns);
+        trace!("{:#?}", serde_json::to_string(resource));
+
+        let api: Api<K> = <<K as Resource>::Scope as ApplyStrategy<K>>::get_api(&self.client, ns);
+        api.create(&PostParams::default(), &resource).await
     }
 
-    pub async fn apply_namespaced<K>(
-        &self,
-        resource: &Vec<K>,
-        ns: Option<&str>,
-    ) -> Result<Vec<K>, Error>
+    pub async fn apply_many<K>(&self, resource: &Vec<K>, ns: Option<&str>) -> Result<Vec<K>, Error>
     where
-        K: Resource<Scope = NamespaceResourceScope>
-            + Clone
-            + std::fmt::Debug
-            + DeserializeOwned
-            + serde::Serialize
-            + Default,
+        K: Resource + Clone + std::fmt::Debug + DeserializeOwned + serde::Serialize,
+        <K as Resource>::Scope: ApplyStrategy<K>,
         <K as kube::Resource>::DynamicType: Default,
     {
-        let mut resources = Vec::new();
+        let mut result = Vec::new();
         for r in resource.iter() {
-            let api: Api<K> = match ns {
-                Some(ns) => Api::namespaced(self.client.clone(), ns),
-                None => Api::default_namespaced(self.client.clone()),
-            };
-            resources.push(api.create(&PostParams::default(), &r).await?);
+            result.push(self.apply(r, ns).await?);
         }
-        Ok(resources)
+
+        Ok(result)
     }
 
     pub(crate) async fn from_kubeconfig(path: &str) -> Option<K8sClient> {
@@ -86,3 +65,35 @@ impl K8sClient {
         ))
     }
 }
+
+pub trait ApplyStrategy<K: Resource> {
+    fn get_api(client: &Client, ns: Option<&str>) -> Api<K>;
+}
+
+/// Implementation for all resources that are cluster-scoped.
+/// It will always use `Api::all` and ignore the namespace parameter.
+impl<K> ApplyStrategy<K> for ClusterResourceScope
+where
+    K: Resource<Scope = ClusterResourceScope>,
+    <K as kube::Resource>::DynamicType: Default,
+{
+    fn get_api(client: &Client, _ns: Option<&str>) -> Api<K> {
+        Api::all(client.clone())
+    }
+}
+
+/// Implementation for all resources that are namespace-scoped.
+/// It will use `Api::namespaced` if a namespace is provided, otherwise
+/// it falls back to the default namespace configured in your kubeconfig.
+impl<K> ApplyStrategy<K> for NamespaceResourceScope
+where
+    K: Resource<Scope = NamespaceResourceScope>,
+    <K as kube::Resource>::DynamicType: Default,
+{
+    fn get_api(client: &Client, ns: Option<&str>) -> Api<K> {
+        match ns {
+            Some(ns) => Api::namespaced(client.clone(), ns),
+            None => Api::default_namespaced(client.clone()),
+        }
+    }
+}

harmony/src/domain/topology/k8s_anywhere.rs

@@ -6,6 +6,7 @@ use log::{info, warn};
 use tokio::sync::OnceCell;
 
 use crate::{
+    data::Id,
     executors::ExecutorError,
     interpret::{InterpretError, Outcome},
     inventory::Inventory,
@@ -259,27 +260,27 @@ impl TenantManager for K8sAnywhereTopology {
 
     async fn update_tenant_resource_limits(
         &self,
-        tenant_name: &str,
+        tenant_id: &Id,
         new_limits: &ResourceLimits,
     ) -> Result<(), ExecutorError> {
         self.get_k8s_tenant_manager()?
-            .update_tenant_resource_limits(tenant_name, new_limits)
+            .update_tenant_resource_limits(tenant_id, new_limits)
             .await
     }
 
     async fn update_tenant_network_policy(
         &self,
-        tenant_name: &str,
+        tenant_id: &Id,
         new_policy: &TenantNetworkPolicy,
     ) -> Result<(), ExecutorError> {
         self.get_k8s_tenant_manager()?
-            .update_tenant_network_policy(tenant_name, new_policy)
+            .update_tenant_network_policy(tenant_id, new_policy)
             .await
     }
 
-    async fn deprovision_tenant(&self, tenant_name: &str) -> Result<(), ExecutorError> {
+    async fn deprovision_tenant(&self, tenant_id: &Id) -> Result<(), ExecutorError> {
         self.get_k8s_tenant_manager()?
-            .deprovision_tenant(tenant_name)
+            .deprovision_tenant(tenant_id)
             .await
     }
 }

harmony/src/modules/k8s/resource.rs

@@ -1,6 +1,7 @@
 use async_trait::async_trait;
 use k8s_openapi::NamespaceResourceScope;
 use kube::Resource;
+use log::info;
 use serde::{Serialize, de::DeserializeOwned};
 
 use crate::{
@@ -75,11 +76,12 @@ where
         _inventory: &Inventory,
         topology: &T,
     ) -> Result<Outcome, InterpretError> {
+        info!("Applying {} resources", self.score.resource.len());
         topology
             .k8s_client()
             .await
             .expect("Environment should provide enough information to instanciate a client")
-            .apply_namespaced(&self.score.resource, self.score.namespace.as_deref())
+            .apply_many(&self.score.resource, self.score.namespace.as_deref())
             .await?;
 
         Ok(Outcome::success(