wip: added score to make control planes unschedulable on UPI, started setting up path_resource function for K8sClient

harmony/src/domain/topology/k8s.rs

@@ -27,7 +27,7 @@ use kube::{
 };
 use log::{debug, error, trace, warn};
 use serde::{Serialize, de::DeserializeOwned};
-use serde_json::json;
+use serde_json::{json, Value};
 use similar::TextDiff;
 use tokio::{io::AsyncReadExt, time::sleep};
 use url::Url;
@@ -64,6 +64,10 @@ impl K8sClient {
         })
     }
 
+    pub async fn patch_resource(&self, patch: Value, gvk: &GroupVersionKind) -> Result<(), Error> {
+        
+    }
+
     pub async fn service_account_api(&self, namespace: &str) -> Api<ServiceAccount> {
         let api: Api<ServiceAccount> = Api::namespaced(self.client.clone(), namespace);
         api

harmony/src/infra/network_manager.rs

@@ -17,12 +17,6 @@ use crate::{
     topology::{HostNetworkConfig, NetworkError, NetworkManager, k8s::K8sClient},
 };
 
-/// TODO document properly the non-intuitive behavior or "roll forward only" of nmstate in general
-/// It is documented in nmstate official doc, but worth mentionning here :
-///
-/// - You create a bond, nmstate will apply it
-/// - You delete de bond from nmstate, it will NOT delete it
-/// - To delete it you have to update it with configuration set to null
 pub struct OpenShiftNmStateNetworkManager {
     k8s_client: Arc<K8sClient>,
 }
@@ -37,7 +31,6 @@ impl std::fmt::Debug for OpenShiftNmStateNetworkManager {
 impl NetworkManager for OpenShiftNmStateNetworkManager {
     async fn ensure_network_manager_installed(&self) -> Result<(), NetworkError> {
         debug!("Installing NMState controller...");
-        // TODO use operatorhub maybe?
         self.k8s_client.apply_url(url::Url::parse("https://github.com/nmstate/kubernetes-nmstate/releases/download/v0.84.0/nmstate.io_nmstates.yaml
 ").unwrap(), Some("nmstate"))
             .await?;

harmony/src/modules/okd/control_plane.rs

@@ -0,0 +1,87 @@
+use std::sync::Arc;
+
+use async_trait::async_trait;
+use harmony_types::id::Id;
+use kube::api::GroupVersionKind;
+use serde::Serialize;
+use serde_json::json;
+
+use crate::{
+    data::Version,
+    interpret::{Interpret, InterpretError, InterpretName, InterpretStatus, Outcome},
+    inventory::Inventory,
+    score::Score,
+    topology::{K8sclient, Topology, k8s::K8sClient},
+};
+
+#[derive(Debug, Clone, Serialize)]
+pub struct ControlPlaneConfig {}
+
+impl<T: Topology + K8sclient> Score<T> for ControlPlaneConfig {
+    fn name(&self) -> String {
+        "ControlPlaneConfig".to_string()
+    }
+
+    #[doc(hidden)]
+    fn create_interpret(&self) -> Box<dyn Interpret<T>> {
+        todo!()
+    }
+}
+
+#[derive(Debug, Clone, Serialize)]
+pub struct ControlPlaneConfigInterpret {
+    score: ControlPlaneConfig,
+}
+
+#[async_trait]
+impl<T: Topology + K8sclient> Interpret<T> for ControlPlaneConfigInterpret {
+    async fn execute(
+        &self,
+        inventory: &Inventory,
+        topology: &T,
+    ) -> Result<Outcome, InterpretError> {
+        let client = topology.k8s_client().await.unwrap();
+        self.control_plane_unschedulable(&client).await
+    }
+
+    fn get_name(&self) -> InterpretName {
+        todo!()
+    }
+
+    fn get_version(&self) -> Version {
+        todo!()
+    }
+
+    fn get_status(&self) -> InterpretStatus {
+        todo!()
+    }
+
+    fn get_children(&self) -> Vec<Id> {
+        todo!()
+    }
+}
+
+impl ControlPlaneConfigInterpret {
+    async fn control_plane_unschedulable(
+        &self,
+        client: &Arc<K8sClient>,
+    ) -> Result<Outcome, InterpretError> {
+        let patch = json!({
+            "spec": {
+                "mastersSchedulable": false
+            }
+        });
+
+        let resource = GroupVersionKind {
+            group: "config.openshift.io".to_string(),
+            version: "v1".to_string(),
+            kind: "Scheduler".to_string(),
+        };
+
+        client.patch_resource(patch, &resource).await?;
+
+        Ok(Outcome::success(
+            "control planes are no longer schedulable".to_string(),
+        ))
+    }
+}