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163 changes: 163 additions & 0 deletions
163
internal/controller/healthcheck/healthcheck_controller.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,163 @@ | ||
| /* | ||
| Copyright 2023 The Kubernetes Authors. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
||
| package healthcheck | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "reflect" | ||
| "time" | ||
|
|
||
| appsv1 "k8s.io/api/apps/v1" | ||
| corev1 "k8s.io/api/core/v1" | ||
| apierrors "k8s.io/apimachinery/pkg/api/errors" | ||
| "k8s.io/apimachinery/pkg/labels" | ||
| operatorv1 "sigs.k8s.io/cluster-api-operator/api/v1alpha2" | ||
| "sigs.k8s.io/cluster-api-operator/internal/controller/genericprovider" | ||
| "sigs.k8s.io/cluster-api-operator/util" | ||
| clusterv1 "sigs.k8s.io/cluster-api/api/v1beta1" | ||
| "sigs.k8s.io/cluster-api/util/conditions" | ||
| "sigs.k8s.io/cluster-api/util/patch" | ||
| ctrl "sigs.k8s.io/controller-runtime" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| "sigs.k8s.io/controller-runtime/pkg/controller" | ||
| "sigs.k8s.io/controller-runtime/pkg/reconcile" | ||
| ) | ||
|
|
||
| type ProviderHealthCheckReconciler struct { | ||
| Provider client.Object | ||
| Client client.Client | ||
| } | ||
|
|
||
| func (r *ProviderHealthCheckReconciler) SetupWithManager(mgr ctrl.Manager, options controller.Options) error { | ||
| return ctrl.NewControllerManagedBy(mgr). | ||
| For(r.Provider). | ||
| WithOptions(options). | ||
| Complete(r) | ||
| } | ||
|
|
||
| func (r *ProviderHealthCheckReconciler) Reconcile(ctx context.Context, req reconcile.Request) (_ reconcile.Result, reterr error) { | ||
| log := ctrl.LoggerFrom(ctx) | ||
|
|
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| log.Info("Checking provider health") | ||
|
|
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| result := ctrl.Result{} | ||
|
|
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| typedProvider, err := r.newGenericProvider() | ||
| if err != nil { | ||
| return result, err | ||
| } | ||
|
|
||
| if err := r.Client.Get(ctx, req.NamespacedName, typedProvider.GetObject()); err != nil { | ||
| if apierrors.IsNotFound(err) { | ||
| // Object not found, return. Created objects are automatically garbage collected. | ||
| // For additional cleanup logic use finalizers. | ||
| return result, nil | ||
| } | ||
| // Error reading the object - requeue the request. | ||
| return result, err | ||
| } | ||
|
|
||
| // Stop earlier if this provider is not installed yet. | ||
| if !conditions.IsTrue(typedProvider, operatorv1.ProviderInstalledCondition) { | ||
| return ctrl.Result{RequeueAfter: 5 * time.Second}, nil | ||
| } | ||
|
|
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| // Get Deployment based on the provider type. | ||
| providerName := util.GenerateProviderName(typedProvider) | ||
| namespace := typedProvider.GetNamespace() | ||
| deployments := &appsv1.DeploymentList{} | ||
|
|
||
| if err := r.Client.List( | ||
| ctx, deployments, | ||
| client.InNamespace(namespace), | ||
| client.MatchingLabelsSelector{Selector: labels.Set{clusterv1.ProviderNameLabel: providerName}.AsSelector()}, | ||
| ); err != nil { | ||
| return result, fmt.Errorf("error fetching deployment for provider %s: %w", providerName, err) | ||
| } | ||
|
|
||
| if len(deployments.Items) > 1 { | ||
| return result, fmt.Errorf("more than one deployments found for provider %s", providerName) | ||
| } | ||
|
|
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| if len(deployments.Items) == 0 { | ||
| return result, fmt.Errorf("no deployments found for provider %s", providerName) | ||
| } | ||
|
|
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| deployment := deployments.Items[0] | ||
|
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| deploymentCondition := getDeploymentCondition(deployment.Status, appsv1.DeploymentAvailable) | ||
|
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| // Compare existing Ready condition with the deployment condition and stop if they already match. | ||
| currentReadyCondition := conditions.Get(typedProvider, clusterv1.ReadyCondition) | ||
| if currentReadyCondition != nil && deploymentCondition != nil && currentReadyCondition.Status == deploymentCondition.Status { | ||
| return result, nil | ||
| } | ||
|
|
||
| // Initialize the patch helper | ||
| patchHelper, err := patch.NewHelper(typedProvider.GetObject(), r.Client) | ||
| if err != nil { | ||
| return result, err | ||
| } | ||
|
|
||
| if deploymentCondition != nil { | ||
| conditions.Set(typedProvider, &clusterv1.Condition{Type: clusterv1.ReadyCondition, Status: deploymentCondition.Status}) | ||
| } else { | ||
| conditions.Set(typedProvider, &clusterv1.Condition{Type: clusterv1.ReadyCondition, Status: corev1.ConditionFalse}) | ||
| } | ||
|
|
||
| // Don't requeue immediately if the deployment is not ready, but rather wait 5 seconds. | ||
| if conditions.IsFalse(typedProvider, clusterv1.ReadyCondition) { | ||
| result = ctrl.Result{RequeueAfter: 5 * time.Second} | ||
| } | ||
|
|
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| options := patch.WithOwnedConditions{Conditions: []clusterv1.ConditionType{clusterv1.ReadyCondition}} | ||
|
|
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| return result, patchHelper.Patch(ctx, typedProvider.GetObject(), options) | ||
| } | ||
|
|
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| func (r *ProviderHealthCheckReconciler) newGenericProvider() (genericprovider.GenericProvider, error) { | ||
| switch r.Provider.(type) { | ||
| case *operatorv1.CoreProvider: | ||
| return &genericprovider.CoreProviderWrapper{CoreProvider: &operatorv1.CoreProvider{}}, nil | ||
| case *operatorv1.BootstrapProvider: | ||
| return &genericprovider.BootstrapProviderWrapper{BootstrapProvider: &operatorv1.BootstrapProvider{}}, nil | ||
| case *operatorv1.ControlPlaneProvider: | ||
| return &genericprovider.ControlPlaneProviderWrapper{ControlPlaneProvider: &operatorv1.ControlPlaneProvider{}}, nil | ||
| case *operatorv1.InfrastructureProvider: | ||
| return &genericprovider.InfrastructureProviderWrapper{InfrastructureProvider: &operatorv1.InfrastructureProvider{}}, nil | ||
| case *operatorv1.AddonProvider: | ||
| return &genericprovider.AddonProviderWrapper{AddonProvider: &operatorv1.AddonProvider{}}, nil | ||
| default: | ||
| providerKind := reflect.Indirect(reflect.ValueOf(r.Provider)).Type().Name() | ||
| failedToCastInterfaceErr := fmt.Errorf("failed to cast interface for type: %s", providerKind) | ||
|
|
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| return nil, failedToCastInterfaceErr | ||
| } | ||
| } | ||
|
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| // getDeploymentCondition returns the deployment condition with the provided type. | ||
| func getDeploymentCondition(status appsv1.DeploymentStatus, condType appsv1.DeploymentConditionType) *appsv1.DeploymentCondition { | ||
| for i := range status.Conditions { | ||
| c := status.Conditions[i] | ||
| if c.Type == condType { | ||
| return &c | ||
| } | ||
| } | ||
|
|
||
| return nil | ||
| } |
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