harmony/src/domain/topology/k8s/helper.rs

@@ -10,8 +10,10 @@ use k8s_openapi::api::core::v1::{
 };
 use k8s_openapi::api::rbac::v1::{ClusterRoleBinding, RoleRef, Subject};
 use k8s_openapi::apimachinery::pkg::apis::meta::v1::ObjectMeta;
+use kube::api::DynamicObject;
 use kube::error::DiscoveryError;
 use log::{debug, error, info, warn};
+use serde::de::DeserializeOwned;
 
 #[derive(Debug)]
 pub struct PrivilegedPodConfig {
@@ -279,6 +281,16 @@ pub fn prompt_drain_timeout_action(
     }
 }
 
+/// JSON round-trip: DynamicObject → K
+///
+/// Safe because the DynamicObject was produced by the apiserver from a
+/// payload that was originally serialized from K, so the schema is identical.
+pub(crate) fn dyn_to_typed<K: DeserializeOwned>(obj: DynamicObject) -> Result<K, kube::Error> {
+    serde_json::to_value(obj)
+        .and_then(serde_json::from_value)
+        .map_err(kube::Error::SerdeError)
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;

harmony/src/domain/topology/k8s/mod.rs

@@ -832,7 +832,6 @@ impl K8sClient {
     pub async fn apply<K>(&self, resource: &K, namespace: 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,
     {
         debug!(
@@ -845,9 +844,34 @@ impl K8sClient {
             serde_json::to_value(resource).unwrap_or(serde_json::Value::Null)
         );
 
-        let api: Api<K> =
+        // ── 1. Extract GVK from compile-time type info ──────────────────────────
-            <<K as Resource>::Scope as ApplyStrategy<K>>::get_api(&self.client, namespace);
+        let dyntype = K::DynamicType::default();
-        // api.create(&PostParams::default(), &resource).await
+        let gvk = GroupVersionKind {
+            group: K::group(&dyntype).to_string(),
+            version: K::version(&dyntype).to_string(),
+            kind: K::kind(&dyntype).to_string(),
+        };
+
+        // ── 2. Resolve scope at runtime via discovery ────────────────────────────
+        let discovery = self.discovery().await?;
+        let (ar, caps) = discovery.resolve_gvk(&gvk).ok_or_else(|| {
+            Error::Discovery(DiscoveryError::MissingResource(format!(
+                "Cannot resolve GVK: {:?}",
+                gvk
+            )))
+        })?;
+
+        let effective_namespace = if caps.scope == Scope::Cluster {
+            None
+        } else {
+            // Prefer the caller-supplied namespace, fall back to the resource's own
+            namespace.or_else(|| resource.meta().namespace.as_deref())
+        };
+
+        // ── 3. Determine the effective namespace based on the discovered scope ───
+        let api: Api<DynamicObject> =
+            get_dynamic_api(ar, caps, self.client.clone(), effective_namespace, false);
+
         let patch_params = PatchParams::apply("harmony");
         let name = resource
             .meta()
@@ -883,7 +907,7 @@ impl K8sClient {
                     if current_yaml == new_yaml {
                         println!("No changes detected.");
                         // Return the current resource state as there are no changes.
-                        return Ok(current);
+                        return helper::dyn_to_typed(current);
                     }
 
                     println!("Changes detected:");
@@ -930,13 +954,19 @@ impl K8sClient {
                 .patch(name, &patch_params, &Patch::Apply(resource))
                 .await
             {
-                Ok(obj) => Ok(obj),
+                Ok(obj) => helper::dyn_to_typed(obj),
                 Err(Error::Api(ErrorResponse { code: 404, .. })) => {
                     // Resource doesn't exist, server-side apply should create it
                     // This can happen with some API servers, so we explicitly create
                     debug!("Resource '{}' not found, creating via POST", name);
-                    api.create(&PostParams::default(), resource)
+                    let dyn_resource: DynamicObject = serde_json::from_value(
+                        serde_json::to_value(resource).map_err(Error::SerdeError)?,
+                    )
+                    .map_err(Error::SerdeError)?;
+
+                    api.create(&PostParams::default(), &dyn_resource)
                         .await
+                        .and_then(helper::dyn_to_typed)
                         .map_err(|e| {
                             error!("Failed to create resource '{}': {}", name, e);
                             e
@@ -1907,7 +1937,7 @@ impl K8sClient {
         );
 
         // ── 3. Evict & wait loop ──────────────────────────────────────
-        let start = tokio::time::Instant::now();
+        let mut start = tokio::time::Instant::now();
         let poll_interval = Duration::from_secs(5);
         let mut pending = evictable;
 
@@ -1990,7 +2020,7 @@ impl K8sClient {
                     }
                     helper::DrainTimeoutAction::Retry => {
                         // Reset the start time to retry for another full timeout period
-                        let start = tokio::time::Instant::now();
+                        start = tokio::time::Instant::now();
                         continue;
                     }
                     helper::DrainTimeoutAction::Abort => {