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Merge pull request kubernetes-sigs#4793 from nojnhuh/v2-mutators
ASOAPI: add resource mutator framework
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,167 @@ | ||
| /* | ||
| Copyright 2024 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 mutators | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "strings" | ||
|
|
||
| asocontainerservicev1 "github.com/Azure/azure-service-operator/v2/api/containerservice/v1api20231001" | ||
| "k8s.io/apimachinery/pkg/apis/meta/v1/unstructured" | ||
| infrav1exp "sigs.k8s.io/cluster-api-provider-azure/exp/api/v1alpha1" | ||
| "sigs.k8s.io/cluster-api-provider-azure/util/tele" | ||
| clusterv1 "sigs.k8s.io/cluster-api/api/v1beta1" | ||
| "sigs.k8s.io/controller-runtime/pkg/reconcile" | ||
| ) | ||
|
|
||
| var ( | ||
| // ErrNoManagedClusterDefined describes an AzureASOManagedControlPlane without a ManagedCluster. | ||
| ErrNoManagedClusterDefined = fmt.Errorf("no %s ManagedCluster defined in AzureASOManagedControlPlane spec.resources", asocontainerservicev1.GroupVersion.Group) | ||
| ) | ||
|
|
||
| // SetManagedClusterDefaults propagates values defined by Cluster API to an ASO ManagedCluster. | ||
| func SetManagedClusterDefaults(asoManagedControlPlane *infrav1exp.AzureASOManagedControlPlane, cluster *clusterv1.Cluster) ResourcesMutator { | ||
| return func(ctx context.Context, us []*unstructured.Unstructured) error { | ||
| ctx, _, done := tele.StartSpanWithLogger(ctx, "mutators.SetManagedClusterDefaults") | ||
| defer done() | ||
|
|
||
| var managedCluster *unstructured.Unstructured | ||
| var managedClusterPath string | ||
| for i, u := range us { | ||
| if u.GroupVersionKind().Group == asocontainerservicev1.GroupVersion.Group && | ||
| u.GroupVersionKind().Kind == "ManagedCluster" { | ||
| managedCluster = u | ||
| managedClusterPath = fmt.Sprintf("spec.resources[%d]", i) | ||
| break | ||
| } | ||
| } | ||
| if managedCluster == nil { | ||
| return reconcile.TerminalError(ErrNoManagedClusterDefined) | ||
| } | ||
|
|
||
| if err := setManagedClusterKubernetesVersion(ctx, asoManagedControlPlane, managedClusterPath, managedCluster); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if err := setManagedClusterServiceCIDR(ctx, cluster, managedClusterPath, managedCluster); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if err := setManagedClusterPodCIDR(ctx, cluster, managedClusterPath, managedCluster); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
| } | ||
|
|
||
| func setManagedClusterKubernetesVersion(ctx context.Context, asoManagedControlPlane *infrav1exp.AzureASOManagedControlPlane, managedClusterPath string, managedCluster *unstructured.Unstructured) error { | ||
| _, log, done := tele.StartSpanWithLogger(ctx, "mutators.setManagedClusterKubernetesVersion") | ||
| defer done() | ||
|
|
||
| capzK8sVersion := strings.TrimPrefix(asoManagedControlPlane.Spec.Version, "v") | ||
| if capzK8sVersion == "" { | ||
| // When the CAPI contract field isn't set, any value for version in the embedded ASO resource may be specified. | ||
| return nil | ||
| } | ||
|
|
||
| k8sVersionPath := []string{"spec", "kubernetesVersion"} | ||
| userK8sVersion, k8sVersionFound, err := unstructured.NestedString(managedCluster.UnstructuredContent(), k8sVersionPath...) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| setK8sVersion := mutation{ | ||
| location: managedClusterPath + "." + strings.Join(k8sVersionPath, "."), | ||
| val: capzK8sVersion, | ||
| reason: "because spec.version is set to " + asoManagedControlPlane.Spec.Version, | ||
| } | ||
| if k8sVersionFound && userK8sVersion != capzK8sVersion { | ||
| return Incompatible{ | ||
| mutation: setK8sVersion, | ||
| userVal: userK8sVersion, | ||
| } | ||
| } | ||
| logMutation(log, setK8sVersion) | ||
| return unstructured.SetNestedField(managedCluster.UnstructuredContent(), capzK8sVersion, k8sVersionPath...) | ||
| } | ||
|
|
||
| func setManagedClusterServiceCIDR(ctx context.Context, cluster *clusterv1.Cluster, managedClusterPath string, managedCluster *unstructured.Unstructured) error { | ||
| _, log, done := tele.StartSpanWithLogger(ctx, "mutators.setManagedClusterServiceCIDR") | ||
| defer done() | ||
|
|
||
| if cluster.Spec.ClusterNetwork == nil || | ||
| cluster.Spec.ClusterNetwork.Services == nil || | ||
| len(cluster.Spec.ClusterNetwork.Services.CIDRBlocks) == 0 { | ||
| return nil | ||
| } | ||
|
|
||
| capiCIDR := cluster.Spec.ClusterNetwork.Services.CIDRBlocks[0] | ||
|
|
||
| // ManagedCluster.v1api20210501.containerservice.azure.com does not contain the plural serviceCidrs field. | ||
| svcCIDRPath := []string{"spec", "networkProfile", "serviceCidr"} | ||
| userSvcCIDR, found, err := unstructured.NestedString(managedCluster.UnstructuredContent(), svcCIDRPath...) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| setSvcCIDR := mutation{ | ||
| location: managedClusterPath + "." + strings.Join(svcCIDRPath, "."), | ||
| val: capiCIDR, | ||
| reason: fmt.Sprintf("because spec.clusterNetwork.services.cidrBlocks[0] in Cluster %s/%s is set to %s", cluster.Namespace, cluster.Name, capiCIDR), | ||
| } | ||
| if found && userSvcCIDR != capiCIDR { | ||
| return Incompatible{ | ||
| mutation: setSvcCIDR, | ||
| userVal: userSvcCIDR, | ||
| } | ||
| } | ||
| logMutation(log, setSvcCIDR) | ||
| return unstructured.SetNestedField(managedCluster.UnstructuredContent(), capiCIDR, svcCIDRPath...) | ||
| } | ||
|
|
||
| func setManagedClusterPodCIDR(ctx context.Context, cluster *clusterv1.Cluster, managedClusterPath string, managedCluster *unstructured.Unstructured) error { | ||
| _, log, done := tele.StartSpanWithLogger(ctx, "mutators.setManagedClusterPodCIDR") | ||
| defer done() | ||
|
|
||
| if cluster.Spec.ClusterNetwork == nil || | ||
| cluster.Spec.ClusterNetwork.Pods == nil || | ||
| len(cluster.Spec.ClusterNetwork.Pods.CIDRBlocks) == 0 { | ||
| return nil | ||
| } | ||
|
|
||
| capiCIDR := cluster.Spec.ClusterNetwork.Pods.CIDRBlocks[0] | ||
|
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| // ManagedCluster.v1api20210501.containerservice.azure.com does not contain the plural podCidrs field. | ||
| podCIDRPath := []string{"spec", "networkProfile", "podCidr"} | ||
| userPodCIDR, found, err := unstructured.NestedString(managedCluster.UnstructuredContent(), podCIDRPath...) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| setPodCIDR := mutation{ | ||
| location: managedClusterPath + "." + strings.Join(podCIDRPath, "."), | ||
| val: capiCIDR, | ||
| reason: fmt.Sprintf("because spec.clusterNetwork.pods.cidrBlocks[0] in Cluster %s/%s is set to %s", cluster.Namespace, cluster.Name, capiCIDR), | ||
| } | ||
| if found && userPodCIDR != capiCIDR { | ||
| return Incompatible{ | ||
| mutation: setPodCIDR, | ||
| userVal: userPodCIDR, | ||
| } | ||
| } | ||
| logMutation(log, setPodCIDR) | ||
| return unstructured.SetNestedField(managedCluster.UnstructuredContent(), capiCIDR, podCIDRPath...) | ||
| } |
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