propagate CUE health-eval errors from GetStatus (#7226)

Signed-off-by: hisingh <hisingh@guidewire.com>
Co-authored-by: hisingh <hisingh@guidewire.com>

pkg/controller/core.oam.dev/v1beta1/application/apply.go

@@ -27,6 +27,7 @@ import (
 	kerrors "k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
 	utilfeature "k8s.io/apiserver/pkg/util/feature"
+	"k8s.io/klog/v2"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 
 	monitorContext "github.com/kubevela/pkg/monitor/context"
@@ -262,12 +263,15 @@ func (h *AppHandler) collectTraitHealthStatus(comp *appfile.Component, tr *appfi
 		return common.ApplicationTraitStatus{}, nil, errors.WithMessagef(err, "app=%s, comp=%s, trait=%s, evaluate status message error", appName, comp.Name, tr.Name)
 	}
 	statusResult, err := tr.EvalStatus(templateContext)
-	if err == nil && statusResult != nil {
+	if err != nil {
+		klog.Warningf("app=%s, comp=%s, trait=%s, evaluate trait status error (best-effort): %v", appName, comp.Name, tr.Name, err)
+	}
+	if statusResult != nil {
 		traitStatus.Healthy = statusResult.Healthy
 		traitStatus.Message = statusResult.Message
 		traitStatus.Details = statusResult.Details
 	}
-	return traitStatus, extractOutputs(templateContext), err
+	return traitStatus, extractOutputs(templateContext), nil
 }
 
 // collectWorkloadHealthStatus collect workload health status
@@ -302,7 +306,7 @@ func (h *AppHandler) collectWorkloadHealthStatus(ctx context.Context, comp *appf
 		}
 		statusResult, err := comp.EvalStatus(templateContext)
 		if err != nil {
-			return false, nil, nil, errors.WithMessagef(err, "app=%s, comp=%s, evaluate workload status message error", appName, comp.Name)
+			klog.Warningf("app=%s, comp=%s, evaluate workload status error (best-effort): %v", appName, comp.Name, err)
 		}
 		if statusResult != nil {
 			status.Healthy = statusResult.Healthy

pkg/cue/definition/health/health.go

@@ -18,6 +18,7 @@ package health
 
 import (
 	"encoding/json"
+	goerrors "errors"
 	"slices"
 	"strings"
 
@@ -104,7 +105,7 @@ func GetStatus(templateContext map[string]interface{}, request *StatusRequest) (
 		Healthy: healthy,
 		Message: message,
 		Details: statusMap,
-	}, nil
+	}, goerrors.Join(mapErr, healthErr, msgErr)
 }
 
 func getStatusMessage(templateContext map[string]interface{}, customStatusTemplate string, parameter interface{}) (string, error) {

pkg/cue/definition/health/health_test.go

@@ -1048,3 +1048,20 @@ required: string | *"default"
 		})
 	}
 }
+
+// TestGetStatus_PropagatesHealthEvalError is the regression test from issue #7141:
+// GetStatus must not silently discard a CUE health-policy evaluation error.
+func TestGetStatus_PropagatesHealthEvalError(t *testing.T) {
+	templateContext := map[string]interface{}{
+		"output": map[string]interface{}{
+			"spec":   map[string]interface{}{"replicas": int64(1)},
+			"status": map[string]interface{}{"readyReplicas": int64(1)},
+		},
+	}
+	brokenPolicy := `isHealth: context.output.spec.replicas + "not-a-number" > 0`
+
+	result, err := GetStatus(templateContext, &StatusRequest{Health: brokenPolicy})
+	assert.Error(t, err, "GetStatus must surface the health policy evaluation error")
+	assert.NotNil(t, result, "GetStatus should still return a best-effort result")
+	assert.False(t, result.Healthy)
+}