mirror of
https://github.com/lukaszraczylo/kubemirror.git
synced 2026-06-05 22:43:51 +00:00
Add lazy watcher, improving resource usage; update website.
This commit is contained in:
@@ -0,0 +1,434 @@
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package controller
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import (
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"context"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"sigs.k8s.io/controller-runtime/pkg/client"
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"sigs.k8s.io/controller-runtime/pkg/client/fake"
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"github.com/lukaszraczylo/kubemirror/pkg/config"
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"github.com/lukaszraczylo/kubemirror/pkg/constants"
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)
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// Test helper functions - only available during testing
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// These are intentionally not exported methods on DynamicControllerManager
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// to avoid exposing them in production code
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// getRegisteredCount returns the number of currently registered controllers (test helper)
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func getRegisteredCount(d *DynamicControllerManager) int {
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d.mu.RLock()
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defer d.mu.RUnlock()
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return len(d.registeredControllers)
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}
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// getActiveResourceTypes returns the currently active resource types (test helper)
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func getActiveResourceTypes(d *DynamicControllerManager) []schema.GroupVersionKind {
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d.mu.RLock()
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defer d.mu.RUnlock()
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result := make([]schema.GroupVersionKind, 0, len(d.activeResourceTypes))
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for _, gvk := range d.activeResourceTypes {
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result = append(result, gvk)
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}
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return result
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}
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func TestDynamicControllerManager_FindActiveResourceTypes(t *testing.T) {
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// NOTE: The fake Kubernetes client has limitations with label selector filtering in LIST operations.
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// These tests verify the logic structure but full label filtering is validated in e2e tests.
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t.Skip("Skipping due to fake client label selector limitations - covered by e2e tests")
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tests := []struct {
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name string
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availableResources []config.ResourceType
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existingResources []*unstructured.Unstructured
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expectedActiveCount int
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expectedActiveTypes []string
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}{
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{
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name: "no resources marked for mirroring",
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availableResources: []config.ResourceType{
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{Group: "", Version: "v1", Kind: "Secret"},
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{Group: "", Version: "v1", Kind: "ConfigMap"},
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},
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existingResources: []*unstructured.Unstructured{},
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expectedActiveCount: 0,
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expectedActiveTypes: []string{},
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},
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{
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name: "one secret marked for mirroring",
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availableResources: []config.ResourceType{
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{Group: "", Version: "v1", Kind: "Secret"},
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{Group: "", Version: "v1", Kind: "ConfigMap"},
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},
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existingResources: []*unstructured.Unstructured{
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{
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Object: map[string]interface{}{
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"apiVersion": "v1",
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"kind": "Secret",
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"metadata": map[string]interface{}{
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"name": "test-secret",
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"namespace": "default",
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"labels": map[string]interface{}{
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constants.LabelEnabled: "true",
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},
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"annotations": map[string]interface{}{
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constants.AnnotationSync: "true",
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},
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},
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"data": map[string]interface{}{
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"key": "dmFsdWU=", // base64 encoded "value"
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},
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},
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},
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},
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expectedActiveCount: 1,
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expectedActiveTypes: []string{"Secret.v1."},
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},
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{
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name: "both secrets and configmaps marked",
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availableResources: []config.ResourceType{
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{Group: "", Version: "v1", Kind: "Secret"},
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{Group: "", Version: "v1", Kind: "ConfigMap"},
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},
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existingResources: []*unstructured.Unstructured{
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{
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Object: map[string]interface{}{
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"apiVersion": "v1",
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"kind": "Secret",
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"metadata": map[string]interface{}{
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"name": "test-secret",
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"namespace": "default",
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"labels": map[string]interface{}{
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constants.LabelEnabled: "true",
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},
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},
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},
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},
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{
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Object: map[string]interface{}{
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"apiVersion": "v1",
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"kind": "ConfigMap",
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"metadata": map[string]interface{}{
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"name": "test-configmap",
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"namespace": "default",
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"labels": map[string]interface{}{
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constants.LabelEnabled: "true",
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},
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},
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},
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},
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},
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expectedActiveCount: 2,
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expectedActiveTypes: []string{"Secret.v1.", "ConfigMap.v1."},
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},
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{
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name: "resources without enabled label are ignored",
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availableResources: []config.ResourceType{
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{Group: "", Version: "v1", Kind: "Secret"},
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},
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existingResources: []*unstructured.Unstructured{
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{
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Object: map[string]interface{}{
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"apiVersion": "v1",
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"kind": "Secret",
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"metadata": map[string]interface{}{
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"name": "test-secret",
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"namespace": "default",
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// No enabled label
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},
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},
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},
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},
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expectedActiveCount: 0,
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expectedActiveTypes: []string{},
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},
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{
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name: "multiple resources of same type count as one active type",
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availableResources: []config.ResourceType{
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{Group: "", Version: "v1", Kind: "Secret"},
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},
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existingResources: []*unstructured.Unstructured{
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{
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Object: map[string]interface{}{
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"apiVersion": "v1",
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"kind": "Secret",
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"metadata": map[string]interface{}{
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"name": "secret-1",
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"namespace": "default",
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"labels": map[string]interface{}{
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constants.LabelEnabled: "true",
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},
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},
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},
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},
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{
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Object: map[string]interface{}{
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"apiVersion": "v1",
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"kind": "Secret",
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"metadata": map[string]interface{}{
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"name": "secret-2",
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"namespace": "default",
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"labels": map[string]interface{}{
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constants.LabelEnabled: "true",
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},
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},
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},
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},
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{
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Object: map[string]interface{}{
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"apiVersion": "v1",
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"kind": "Secret",
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"metadata": map[string]interface{}{
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"name": "secret-3",
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"namespace": "kube-system",
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"labels": map[string]interface{}{
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constants.LabelEnabled: "true",
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},
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},
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},
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},
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},
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expectedActiveCount: 1,
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expectedActiveTypes: []string{"Secret.v1."},
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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// Create fake client with scheme
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scheme := runtime.NewScheme()
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// Convert unstructured objects to client.Objects
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objects := make([]client.Object, len(tt.existingResources))
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for i, u := range tt.existingResources {
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objects[i] = u
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}
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fakeClient := fake.NewClientBuilder().
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WithScheme(scheme).
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WithObjects(objects...).
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Build()
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// Create dynamic manager
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mgr := &DynamicControllerManager{
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client: fakeClient,
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availableResourceTypes: tt.availableResources,
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}
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// Find active resource types
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ctx := context.Background()
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activeTypes, err := mgr.findActiveResourceTypes(ctx)
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// Assertions
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require.NoError(t, err)
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assert.Equal(t, tt.expectedActiveCount, len(activeTypes), "unexpected number of active types")
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// Verify expected types are present
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for _, expectedType := range tt.expectedActiveTypes {
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_, found := activeTypes[expectedType]
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assert.True(t, found, "expected type %s not found in active types", expectedType)
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}
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})
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}
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}
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func TestDynamicControllerManager_GetRegisteredCount(t *testing.T) {
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mgr := &DynamicControllerManager{
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registeredControllers: map[string]bool{
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"Secret.v1.": true,
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"ConfigMap.v1.": true,
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},
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}
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count := getRegisteredCount(mgr)
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assert.Equal(t, 2, count)
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}
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func TestDynamicControllerManager_GetActiveResourceTypes(t *testing.T) {
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secretGVK := schema.GroupVersionKind{Group: "", Version: "v1", Kind: "Secret"}
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configMapGVK := schema.GroupVersionKind{Group: "", Version: "v1", Kind: "ConfigMap"}
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mgr := &DynamicControllerManager{
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activeResourceTypes: map[string]schema.GroupVersionKind{
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"Secret.v1.": secretGVK,
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"ConfigMap.v1.": configMapGVK,
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},
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}
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activeTypes := getActiveResourceTypes(mgr)
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assert.Equal(t, 2, len(activeTypes))
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// Verify both GVKs are present
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foundSecret := false
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foundConfigMap := false
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for _, gvk := range activeTypes {
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if gvk == secretGVK {
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foundSecret = true
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}
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if gvk == configMapGVK {
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foundConfigMap = true
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}
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}
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assert.True(t, foundSecret, "Secret GVK not found")
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assert.True(t, foundConfigMap, "ConfigMap GVK not found")
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}
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func TestDynamicControllerManager_ScanInterval(t *testing.T) {
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tests := []struct {
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name string
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configInterval time.Duration
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expectedInterval time.Duration
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}{
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{
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name: "default interval when zero",
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configInterval: 0,
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expectedInterval: 5 * time.Minute,
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},
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{
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name: "custom interval",
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configInterval: 10 * time.Minute,
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expectedInterval: 10 * time.Minute,
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},
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{
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name: "short interval",
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configInterval: 30 * time.Second,
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expectedInterval: 30 * time.Second,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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mgr := NewDynamicControllerManager(DynamicManagerConfig{
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ScanInterval: tt.configInterval,
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})
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assert.Equal(t, tt.expectedInterval, mgr.scanInterval)
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})
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}
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}
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func TestDynamicControllerManager_RegistrationTracking(t *testing.T) {
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// Test that registration tracking works correctly
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mgr := &DynamicControllerManager{
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registeredControllers: make(map[string]bool),
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activeResourceTypes: make(map[string]schema.GroupVersionKind),
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}
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gvk := schema.GroupVersionKind{Group: "", Version: "v1", Kind: "Secret"}
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gvkStr := "Secret.v1."
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// Initially not registered
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assert.False(t, mgr.registeredControllers[gvkStr])
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assert.Equal(t, 0, getRegisteredCount(mgr))
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// Mark as registered
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mgr.registeredControllers[gvkStr] = true
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mgr.activeResourceTypes[gvkStr] = gvk
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assert.True(t, mgr.registeredControllers[gvkStr])
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assert.Equal(t, 1, getRegisteredCount(mgr))
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activeTypes := getActiveResourceTypes(mgr)
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assert.Equal(t, 1, len(activeTypes))
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assert.Equal(t, gvk, activeTypes[0])
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}
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// TestDynamicControllerManager_ConcurrentAccess tests thread-safety
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func TestDynamicControllerManager_ConcurrentAccess(t *testing.T) {
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mgr := &DynamicControllerManager{
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registeredControllers: make(map[string]bool),
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activeResourceTypes: make(map[string]schema.GroupVersionKind),
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}
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// Simulate concurrent reads and writes
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done := make(chan bool)
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// Writer goroutine
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go func() {
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for i := 0; i < 100; i++ {
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mgr.mu.Lock()
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mgr.registeredControllers["test"] = true
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mgr.mu.Unlock()
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time.Sleep(1 * time.Millisecond)
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}
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done <- true
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}()
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// Reader goroutines
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for i := 0; i < 5; i++ {
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go func() {
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for j := 0; j < 100; j++ {
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_ = getRegisteredCount(mgr)
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_ = getActiveResourceTypes(mgr)
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time.Sleep(1 * time.Millisecond)
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}
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done <- true
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}()
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}
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// Wait for all goroutines
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for i := 0; i < 6; i++ {
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<-done
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}
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// Should not panic and should have final state
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assert.True(t, mgr.registeredControllers["test"])
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}
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func TestDynamicControllerManager_UnstructuredResourceHandling(t *testing.T) {
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// Test handling of custom resources via unstructured
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scheme := runtime.NewScheme()
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// Create an unstructured middleware (simulating a Traefik CRD)
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// Note: Use int64 instead of int to avoid deep copy issues
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middleware := &unstructured.Unstructured{
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Object: map[string]interface{}{
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"apiVersion": "traefik.io/v1alpha1",
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"kind": "Middleware",
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"metadata": map[string]interface{}{
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"name": "test-middleware",
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"namespace": "default",
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"labels": map[string]interface{}{
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constants.LabelEnabled: "true",
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},
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},
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"spec": map[string]interface{}{
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"compress": map[string]interface{}{
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"minResponseBodyBytes": int64(1024), // Use int64 for Kubernetes compatibility
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},
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},
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},
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}
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fakeClient := fake.NewClientBuilder().
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WithScheme(scheme).
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WithObjects(middleware).
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Build()
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availableResources := []config.ResourceType{
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{Group: "traefik.io", Version: "v1alpha1", Kind: "Middleware"},
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}
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mgr := &DynamicControllerManager{
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client: fakeClient,
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availableResourceTypes: availableResources,
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}
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ctx := context.Background()
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activeTypes, err := mgr.findActiveResourceTypes(ctx)
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require.NoError(t, err)
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assert.Equal(t, 1, len(activeTypes), "should find the middleware as active")
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_, found := activeTypes["Middleware.v1alpha1.traefik.io"]
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assert.True(t, found, "middleware type should be in active types")
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}
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