mirror of
https://github.com/k3s-io/kubernetes.git
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Migrate clusterroleaggregation controller to apply
This commit is contained in:
parent
8a8c267e58
commit
24f95667bf
@ -22,6 +22,8 @@ import (
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"sort"
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"sort"
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"time"
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"time"
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"k8s.io/apiserver/pkg/features"
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rbacv1ac "k8s.io/client-go/applyconfigurations/rbac/v1"
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"k8s.io/klog/v2"
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"k8s.io/klog/v2"
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rbacv1 "k8s.io/api/rbac/v1"
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rbacv1 "k8s.io/api/rbac/v1"
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@ -31,11 +33,13 @@ import (
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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/apimachinery/pkg/labels"
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utilruntime "k8s.io/apimachinery/pkg/util/runtime"
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utilruntime "k8s.io/apimachinery/pkg/util/runtime"
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"k8s.io/apimachinery/pkg/util/wait"
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"k8s.io/apimachinery/pkg/util/wait"
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utilfeature "k8s.io/apiserver/pkg/util/feature"
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rbacinformers "k8s.io/client-go/informers/rbac/v1"
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rbacinformers "k8s.io/client-go/informers/rbac/v1"
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rbacclient "k8s.io/client-go/kubernetes/typed/rbac/v1"
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rbacclient "k8s.io/client-go/kubernetes/typed/rbac/v1"
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rbaclisters "k8s.io/client-go/listers/rbac/v1"
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rbaclisters "k8s.io/client-go/listers/rbac/v1"
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"k8s.io/client-go/tools/cache"
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"k8s.io/client-go/tools/cache"
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"k8s.io/client-go/util/workqueue"
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"k8s.io/client-go/util/workqueue"
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"k8s.io/kubernetes/pkg/controller"
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"k8s.io/kubernetes/pkg/controller"
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)
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)
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@ -121,17 +125,58 @@ func (c *ClusterRoleAggregationController) syncClusterRole(key string) error {
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return nil
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return nil
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}
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}
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// we need to update
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if utilfeature.DefaultFeatureGate.Enabled(features.ServerSideApply) {
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err = c.applyClusterRoles(sharedClusterRole.Name, newPolicyRules)
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if errors.IsUnsupportedMediaType(err) { // TODO: Remove this fallback at least one release after ServerSideApply GA
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// When Server Side Apply is not enabled, fallback to Update. This is required when running
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// 1.21 since api-server can be 1.20 during the upgrade/downgrade.
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// Since Server Side Apply is enabled by default in Beta, this fallback only kicks in
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// if the feature has been disabled using its feature flag.
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err = c.updateClusterRoles(sharedClusterRole, newPolicyRules)
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}
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} else {
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err = c.updateClusterRoles(sharedClusterRole, newPolicyRules)
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}
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return err
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}
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func (c *ClusterRoleAggregationController) applyClusterRoles(name string, newPolicyRules []rbacv1.PolicyRule) error {
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clusterRoleApply := rbacv1ac.ClusterRole(name).
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WithRules(toApplyPolicyRules(newPolicyRules)...)
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opts := metav1.ApplyOptions{FieldManager: "clusterrole-aggregation-controller", Force: true}
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_, err := c.clusterRoleClient.ClusterRoles().Apply(context.TODO(), clusterRoleApply, opts)
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return err
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}
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func (c *ClusterRoleAggregationController) updateClusterRoles(sharedClusterRole *rbacv1.ClusterRole, newPolicyRules []rbacv1.PolicyRule) error {
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clusterRole := sharedClusterRole.DeepCopy()
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clusterRole := sharedClusterRole.DeepCopy()
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clusterRole.Rules = nil
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clusterRole.Rules = nil
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for _, rule := range newPolicyRules {
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for _, rule := range newPolicyRules {
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clusterRole.Rules = append(clusterRole.Rules, *rule.DeepCopy())
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clusterRole.Rules = append(clusterRole.Rules, *rule.DeepCopy())
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}
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}
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_, err = c.clusterRoleClient.ClusterRoles().Update(context.TODO(), clusterRole, metav1.UpdateOptions{})
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_, err := c.clusterRoleClient.ClusterRoles().Update(context.TODO(), clusterRole, metav1.UpdateOptions{})
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return err
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return err
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}
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}
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func toApplyPolicyRules(rules []rbacv1.PolicyRule) []*rbacv1ac.PolicyRuleApplyConfiguration {
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var result []*rbacv1ac.PolicyRuleApplyConfiguration
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for _, rule := range rules {
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result = append(result, toApplyPolicyRule(rule))
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}
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return result
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}
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func toApplyPolicyRule(rule rbacv1.PolicyRule) *rbacv1ac.PolicyRuleApplyConfiguration {
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result := rbacv1ac.PolicyRule()
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result.Resources = rule.Resources
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result.ResourceNames = rule.ResourceNames
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result.APIGroups = rule.APIGroups
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result.NonResourceURLs = rule.NonResourceURLs
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result.Verbs = rule.Verbs
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return result
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}
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func ruleExists(haystack []rbacv1.PolicyRule, needle rbacv1.PolicyRule) bool {
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func ruleExists(haystack []rbacv1.PolicyRule, needle rbacv1.PolicyRule) bool {
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for _, curr := range haystack {
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for _, curr := range haystack {
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if equality.Semantic.DeepEqual(curr, needle) {
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if equality.Semantic.DeepEqual(curr, needle) {
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@ -21,13 +21,17 @@ import (
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rbacv1 "k8s.io/api/rbac/v1"
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rbacv1 "k8s.io/api/rbac/v1"
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"k8s.io/apimachinery/pkg/api/equality"
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"k8s.io/apimachinery/pkg/api/equality"
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"k8s.io/apimachinery/pkg/api/errors"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/util/diff"
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"k8s.io/apimachinery/pkg/util/diff"
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"k8s.io/apimachinery/pkg/util/yaml"
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rbacv1ac "k8s.io/client-go/applyconfigurations/rbac/v1"
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fakeclient "k8s.io/client-go/kubernetes/fake"
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fakeclient "k8s.io/client-go/kubernetes/fake"
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rbaclisters "k8s.io/client-go/listers/rbac/v1"
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rbaclisters "k8s.io/client-go/listers/rbac/v1"
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clienttesting "k8s.io/client-go/testing"
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clienttesting "k8s.io/client-go/testing"
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"k8s.io/client-go/tools/cache"
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"k8s.io/client-go/tools/cache"
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"k8s.io/kubernetes/pkg/controller"
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"k8s.io/kubernetes/pkg/controller"
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)
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)
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@ -69,11 +73,23 @@ func TestSyncClusterRole(t *testing.T) {
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return ret
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return ret
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}
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}
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combinedApplyRole := func(selectors []map[string]string, rules ...[]rbacv1.PolicyRule) *rbacv1ac.ClusterRoleApplyConfiguration {
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ret := rbacv1ac.ClusterRole("combined")
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var r []*rbacv1ac.PolicyRuleApplyConfiguration
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for _, currRules := range rules {
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r = append(r, toApplyPolicyRules(currRules)...)
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}
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ret.WithRules(r...)
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return ret
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}
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tests := []struct {
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tests := []struct {
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name string
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name string
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startingClusterRoles []*rbacv1.ClusterRole
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startingClusterRoles []*rbacv1.ClusterRole
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clusterRoleToSync string
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clusterRoleToSync string
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expectedClusterRole *rbacv1.ClusterRole
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expectedClusterRole *rbacv1.ClusterRole
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expectedClusterRoleApply *rbacv1ac.ClusterRoleApplyConfiguration
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}{
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}{
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{
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{
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name: "remove dead rules",
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name: "remove dead rules",
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@ -81,8 +97,9 @@ func TestSyncClusterRole(t *testing.T) {
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role("hammer", map[string]string{"foo": "bar"}, hammerRules()),
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role("hammer", map[string]string{"foo": "bar"}, hammerRules()),
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combinedRole([]map[string]string{{"foo": "bar"}}, sawRules()),
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combinedRole([]map[string]string{{"foo": "bar"}}, sawRules()),
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},
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},
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clusterRoleToSync: "combined",
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clusterRoleToSync: "combined",
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expectedClusterRole: combinedRole([]map[string]string{{"foo": "bar"}}, hammerRules()),
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expectedClusterRole: combinedRole([]map[string]string{{"foo": "bar"}}, hammerRules()),
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expectedClusterRoleApply: combinedApplyRole([]map[string]string{{"foo": "bar"}}, hammerRules()),
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},
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},
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{
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{
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name: "strip rules",
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name: "strip rules",
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@ -90,8 +107,9 @@ func TestSyncClusterRole(t *testing.T) {
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role("hammer", map[string]string{"foo": "not-bar"}, hammerRules()),
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role("hammer", map[string]string{"foo": "not-bar"}, hammerRules()),
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combinedRole([]map[string]string{{"foo": "bar"}}, hammerRules()),
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combinedRole([]map[string]string{{"foo": "bar"}}, hammerRules()),
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},
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},
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clusterRoleToSync: "combined",
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clusterRoleToSync: "combined",
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expectedClusterRole: combinedRole([]map[string]string{{"foo": "bar"}}),
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expectedClusterRole: combinedRole([]map[string]string{{"foo": "bar"}}),
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expectedClusterRoleApply: combinedApplyRole([]map[string]string{{"foo": "bar"}}),
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},
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},
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{
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{
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name: "select properly and put in order",
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name: "select properly and put in order",
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@ -101,8 +119,9 @@ func TestSyncClusterRole(t *testing.T) {
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role("saw", map[string]string{"foo": "not-bar"}, sawRules()),
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role("saw", map[string]string{"foo": "not-bar"}, sawRules()),
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combinedRole([]map[string]string{{"foo": "bar"}}),
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combinedRole([]map[string]string{{"foo": "bar"}}),
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},
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},
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clusterRoleToSync: "combined",
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clusterRoleToSync: "combined",
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expectedClusterRole: combinedRole([]map[string]string{{"foo": "bar"}}, chiselRules(), hammerRules()),
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expectedClusterRole: combinedRole([]map[string]string{{"foo": "bar"}}, chiselRules(), hammerRules()),
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expectedClusterRoleApply: combinedApplyRole([]map[string]string{{"foo": "bar"}}, chiselRules(), hammerRules()),
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},
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},
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{
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{
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name: "select properly with multiple selectors",
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name: "select properly with multiple selectors",
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@ -112,8 +131,9 @@ func TestSyncClusterRole(t *testing.T) {
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role("saw", map[string]string{"foo": "not-bar"}, sawRules()),
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role("saw", map[string]string{"foo": "not-bar"}, sawRules()),
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combinedRole([]map[string]string{{"foo": "bar"}, {"foo": "not-bar"}}),
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combinedRole([]map[string]string{{"foo": "bar"}, {"foo": "not-bar"}}),
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},
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},
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clusterRoleToSync: "combined",
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clusterRoleToSync: "combined",
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expectedClusterRole: combinedRole([]map[string]string{{"foo": "bar"}, {"foo": "not-bar"}}, chiselRules(), hammerRules(), sawRules()),
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expectedClusterRole: combinedRole([]map[string]string{{"foo": "bar"}, {"foo": "not-bar"}}, chiselRules(), hammerRules(), sawRules()),
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expectedClusterRoleApply: combinedApplyRole([]map[string]string{{"foo": "bar"}, {"foo": "not-bar"}}, chiselRules(), hammerRules(), sawRules()),
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},
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},
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{
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{
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name: "select properly remove duplicates",
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name: "select properly remove duplicates",
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@ -124,8 +144,9 @@ func TestSyncClusterRole(t *testing.T) {
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role("other-saw", map[string]string{"foo": "not-bar"}, sawRules()),
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role("other-saw", map[string]string{"foo": "not-bar"}, sawRules()),
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combinedRole([]map[string]string{{"foo": "bar"}, {"foo": "not-bar"}}),
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combinedRole([]map[string]string{{"foo": "bar"}, {"foo": "not-bar"}}),
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},
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},
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clusterRoleToSync: "combined",
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clusterRoleToSync: "combined",
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expectedClusterRole: combinedRole([]map[string]string{{"foo": "bar"}, {"foo": "not-bar"}}, chiselRules(), hammerRules(), sawRules()),
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expectedClusterRole: combinedRole([]map[string]string{{"foo": "bar"}, {"foo": "not-bar"}}, chiselRules(), hammerRules(), sawRules()),
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expectedClusterRoleApply: combinedApplyRole([]map[string]string{{"foo": "bar"}, {"foo": "not-bar"}}, chiselRules(), hammerRules(), sawRules()),
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},
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},
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{
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{
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name: "no diff skip",
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name: "no diff skip",
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@ -133,50 +154,82 @@ func TestSyncClusterRole(t *testing.T) {
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role("hammer", map[string]string{"foo": "bar"}, hammerRules()),
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role("hammer", map[string]string{"foo": "bar"}, hammerRules()),
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combinedRole([]map[string]string{{"foo": "bar"}}, hammerRules()),
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combinedRole([]map[string]string{{"foo": "bar"}}, hammerRules()),
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},
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},
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clusterRoleToSync: "combined",
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clusterRoleToSync: "combined",
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expectedClusterRole: nil,
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expectedClusterRoleApply: nil,
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}}
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}}
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for _, test := range tests {
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for _, serverSideApplyEnabled := range []bool{true, false} {
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t.Run(test.name, func(t *testing.T) {
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for _, test := range tests {
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indexer := cache.NewIndexer(controller.KeyFunc, cache.Indexers{})
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t.Run(test.name, func(t *testing.T) {
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objs := []runtime.Object{}
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indexer := cache.NewIndexer(controller.KeyFunc, cache.Indexers{})
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for _, obj := range test.startingClusterRoles {
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objs := []runtime.Object{}
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objs = append(objs, obj)
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for _, obj := range test.startingClusterRoles {
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indexer.Add(obj)
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objs = append(objs, obj)
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}
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indexer.Add(obj)
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fakeClient := fakeclient.NewSimpleClientset(objs...)
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}
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c := ClusterRoleAggregationController{
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fakeClient := fakeclient.NewSimpleClientset(objs...)
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clusterRoleClient: fakeClient.RbacV1(),
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clusterRoleLister: rbaclisters.NewClusterRoleLister(indexer),
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}
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err := c.syncClusterRole(test.clusterRoleToSync)
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if err != nil {
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t.Fatal(err)
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}
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if test.expectedClusterRole == nil {
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// The default reactor doesn't support apply, so we need our own (trivial) reactor
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if len(fakeClient.Actions()) != 0 {
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fakeClient.PrependReactor("patch", "clusterroles", func(action clienttesting.Action) (handled bool, ret runtime.Object, err error) {
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if serverSideApplyEnabled == false {
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// UnsupportedMediaType
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return true, nil, errors.NewGenericServerResponse(415, "get", action.GetResource().GroupResource(), "test", "Apply not supported", 0, true)
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}
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return true, nil, nil // clusterroleaggregator drops returned objects so no point in constructing them
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})
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c := ClusterRoleAggregationController{
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clusterRoleClient: fakeClient.RbacV1(),
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clusterRoleLister: rbaclisters.NewClusterRoleLister(indexer),
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}
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err := c.syncClusterRole(test.clusterRoleToSync)
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if err != nil {
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t.Fatal(err)
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}
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if test.expectedClusterRoleApply == nil {
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if len(fakeClient.Actions()) != 0 {
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t.Fatalf("unexpected actions %#v", fakeClient.Actions())
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}
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return
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}
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expectedActions := 1
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if !serverSideApplyEnabled {
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expectedActions = 2
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}
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if len(fakeClient.Actions()) != expectedActions {
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t.Fatalf("unexpected actions %#v", fakeClient.Actions())
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t.Fatalf("unexpected actions %#v", fakeClient.Actions())
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}
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}
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return
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}
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if len(fakeClient.Actions()) != 1 {
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t.Fatalf("unexpected actions %#v", fakeClient.Actions())
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}
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action := fakeClient.Actions()[0]
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action := fakeClient.Actions()[0]
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if !action.Matches("update", "clusterroles") {
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if !action.Matches("patch", "clusterroles") {
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t.Fatalf("unexpected action %#v", action)
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t.Fatalf("unexpected action %#v", action)
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}
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}
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updateAction, ok := action.(clienttesting.UpdateAction)
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applyAction, ok := action.(clienttesting.PatchAction)
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if !ok {
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if !ok {
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t.Fatalf("unexpected action %#v", action)
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t.Fatalf("unexpected action %#v", action)
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}
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}
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if !equality.Semantic.DeepEqual(updateAction.GetObject().(*rbacv1.ClusterRole), test.expectedClusterRole) {
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ac := &rbacv1ac.ClusterRoleApplyConfiguration{}
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t.Fatalf("%v", diff.ObjectDiff(test.expectedClusterRole, updateAction.GetObject().(*rbacv1.ClusterRole)))
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if err := yaml.Unmarshal(applyAction.GetPatch(), ac); err != nil {
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t.Fatalf("error unmarshalling apply request: %v", err)
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}
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}
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})
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if !equality.Semantic.DeepEqual(ac, test.expectedClusterRoleApply) {
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t.Fatalf("%v", diff.ObjectDiff(test.expectedClusterRoleApply, ac))
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}
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if expectedActions == 2 {
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action := fakeClient.Actions()[1]
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if !action.Matches("update", "clusterroles") {
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t.Fatalf("unexpected action %#v", action)
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}
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updateAction, ok := action.(clienttesting.UpdateAction)
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if !ok {
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t.Fatalf("unexpected action %#v", action)
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}
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if !equality.Semantic.DeepEqual(updateAction.GetObject().(*rbacv1.ClusterRole), test.expectedClusterRole) {
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t.Fatalf("%v", diff.ObjectDiff(test.expectedClusterRole, updateAction.GetObject().(*rbacv1.ClusterRole)))
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}
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}
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})
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}
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}
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}
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}
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}
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