/
plugins.go
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/
plugins.go
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/*
Copyright 2022 The KCP 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 admission
import (
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/apiserver/pkg/admission"
"k8s.io/apiserver/pkg/admission/plugin/namespace/lifecycle"
"k8s.io/apiserver/pkg/admission/plugin/resourcequota"
"k8s.io/apiserver/pkg/admission/plugin/validatingadmissionpolicy"
mutatingwebhook "k8s.io/apiserver/pkg/admission/plugin/webhook/mutating"
validatingwebhook "k8s.io/apiserver/pkg/admission/plugin/webhook/validating"
kubeapiserveroptions "k8s.io/kubernetes/pkg/kubeapiserver/options"
certapproval "k8s.io/kubernetes/plugin/pkg/admission/certificates/approval"
"k8s.io/kubernetes/plugin/pkg/admission/certificates/ctbattest"
certsigning "k8s.io/kubernetes/plugin/pkg/admission/certificates/signing"
certsubjectrestriction "k8s.io/kubernetes/plugin/pkg/admission/certificates/subjectrestriction"
"k8s.io/kubernetes/plugin/pkg/admission/defaulttolerationseconds"
"k8s.io/kubernetes/plugin/pkg/admission/limitranger"
"k8s.io/kubernetes/plugin/pkg/admission/network/defaultingressclass"
"k8s.io/kubernetes/plugin/pkg/admission/nodetaint"
podpriority "k8s.io/kubernetes/plugin/pkg/admission/priority"
"k8s.io/kubernetes/plugin/pkg/admission/runtimeclass"
"k8s.io/kubernetes/plugin/pkg/admission/security/podsecurity"
"k8s.io/kubernetes/plugin/pkg/admission/serviceaccount"
"k8s.io/kubernetes/plugin/pkg/admission/storage/persistentvolume/resize"
"k8s.io/kubernetes/plugin/pkg/admission/storage/storageclass/setdefault"
"k8s.io/kubernetes/plugin/pkg/admission/storage/storageobjectinuseprotection"
"github.com/kcp-dev/kcp/pkg/admission/apibinding"
"github.com/kcp-dev/kcp/pkg/admission/apibindingfinalizer"
"github.com/kcp-dev/kcp/pkg/admission/apiexport"
"github.com/kcp-dev/kcp/pkg/admission/apiexportendpointslice"
"github.com/kcp-dev/kcp/pkg/admission/apiresourceschema"
"github.com/kcp-dev/kcp/pkg/admission/crdnooverlappinggvr"
"github.com/kcp-dev/kcp/pkg/admission/kubequota"
"github.com/kcp-dev/kcp/pkg/admission/logicalcluster"
"github.com/kcp-dev/kcp/pkg/admission/logicalclusterfinalizer"
kcpmutatingwebhook "github.com/kcp-dev/kcp/pkg/admission/mutatingwebhook"
workspacenamespacelifecycle "github.com/kcp-dev/kcp/pkg/admission/namespacelifecycle"
"github.com/kcp-dev/kcp/pkg/admission/pathannotation"
"github.com/kcp-dev/kcp/pkg/admission/permissionclaims"
"github.com/kcp-dev/kcp/pkg/admission/reservedcrdannotations"
"github.com/kcp-dev/kcp/pkg/admission/reservedcrdgroups"
"github.com/kcp-dev/kcp/pkg/admission/reservedmetadata"
"github.com/kcp-dev/kcp/pkg/admission/reservednames"
"github.com/kcp-dev/kcp/pkg/admission/shard"
kcpvalidatingadmissionpolicy "github.com/kcp-dev/kcp/pkg/admission/validatingadmissionpolicy"
kcpvalidatingwebhook "github.com/kcp-dev/kcp/pkg/admission/validatingwebhook"
"github.com/kcp-dev/kcp/pkg/admission/workspace"
"github.com/kcp-dev/kcp/pkg/admission/workspacetype"
"github.com/kcp-dev/kcp/pkg/admission/workspacetypeexists"
)
// AllOrderedPlugins is the list of all the plugins in order.
var AllOrderedPlugins = beforeWebhooks(kubeapiserveroptions.AllOrderedPlugins,
workspacenamespacelifecycle.PluginName,
apiresourceschema.PluginName,
workspace.PluginName,
logicalclusterfinalizer.PluginName,
shard.PluginName,
workspacetype.PluginName,
workspacetypeexists.PluginName,
logicalcluster.PluginName,
apiexport.PluginName,
apibinding.PluginName,
apibindingfinalizer.PluginName,
apiexportendpointslice.PluginName,
kcpmutatingwebhook.PluginName,
kcpvalidatingadmissionpolicy.PluginName,
kcpvalidatingwebhook.PluginName,
reservedcrdannotations.PluginName,
reservedcrdgroups.PluginName,
reservednames.PluginName,
crdnooverlappinggvr.PluginName,
reservedmetadata.PluginName,
permissionclaims.PluginName,
pathannotation.PluginName,
kubequota.PluginName,
)
func beforeWebhooks(recommended []string, plugins ...string) []string {
ret := make([]string, 0, len(recommended)+len(plugins))
for _, plugin := range recommended {
if plugin == mutatingwebhook.PluginName {
ret = append(ret, plugins...)
}
ret = append(ret, plugin)
}
return ret
}
// RegisterAllKcpAdmissionPlugins registers all admission plugins.
// The order of registration is irrelevant, see AllOrderedPlugins for execution order.
func RegisterAllKcpAdmissionPlugins(plugins *admission.Plugins) {
workspace.Register(plugins)
logicalclusterfinalizer.Register(plugins)
shard.Register(plugins)
workspacetype.Register(plugins)
workspacetypeexists.Register(plugins)
logicalcluster.Register(plugins)
apiresourceschema.Register(plugins)
apiexport.Register(plugins)
apibinding.Register(plugins)
apibindingfinalizer.Register(plugins)
apiexportendpointslice.Register(plugins)
workspacenamespacelifecycle.Register(plugins)
kcpmutatingwebhook.Register(plugins)
kcpvalidatingadmissionpolicy.Register(plugins)
kcpvalidatingwebhook.Register(plugins)
reservedcrdannotations.Register(plugins)
reservedcrdgroups.Register(plugins)
reservednames.Register(plugins)
crdnooverlappinggvr.Register(plugins)
reservedmetadata.Register(plugins)
permissionclaims.Register(plugins)
pathannotation.Register(plugins)
kubequota.Register(plugins)
}
var defaultOnPluginsInKcp = sets.New[string](
workspacenamespacelifecycle.PluginName, // WorkspaceNamespaceLifecycle
certapproval.PluginName, // CertificateApproval
certsigning.PluginName, // CertificateSigning
certsubjectrestriction.PluginName, // CertificateSubjectRestriction
// KCP
workspace.PluginName,
logicalclusterfinalizer.PluginName,
shard.PluginName,
workspacetype.PluginName,
workspacetypeexists.PluginName,
logicalcluster.PluginName,
apiresourceschema.PluginName,
apiexport.PluginName,
apibinding.PluginName,
apibindingfinalizer.PluginName,
apiexportendpointslice.PluginName,
kcpmutatingwebhook.PluginName,
kcpvalidatingadmissionpolicy.PluginName,
kcpvalidatingwebhook.PluginName,
reservedcrdannotations.PluginName,
reservedcrdgroups.PluginName,
reservednames.PluginName,
permissionclaims.PluginName,
pathannotation.PluginName,
kubequota.PluginName,
)
// defaultOnKubePluginsInKube is a copy of kubeapiserveroptions.defaultOnKubePlugins.
// Always keep this in sync with upstream. It is meant to detect during rebase which
// new plugins got added upstream and to react (enable or disable by default). We
// have a unit test in place to avoid drift.
var defaultOnKubePluginsInKube = sets.New[string](
lifecycle.PluginName, // NamespaceLifecycle
limitranger.PluginName, // LimitRanger
serviceaccount.PluginName, // ServiceAccount
setdefault.PluginName, // DefaultStorageClass
resize.PluginName, // PersistentVolumeClaimResize
defaulttolerationseconds.PluginName, // DefaultTolerationSeconds
mutatingwebhook.PluginName, // MutatingAdmissionWebhook
validatingwebhook.PluginName, // ValidatingAdmissionWebhook
validatingadmissionpolicy.PluginName, // ValidatingAdmissionPolicy
resourcequota.PluginName, // ResourceQuota
storageobjectinuseprotection.PluginName, // StorageObjectInUseProtection
podpriority.PluginName, // PodPriority
nodetaint.PluginName, // TaintNodesByCondition
runtimeclass.PluginName, // RuntimeClass
certapproval.PluginName, // CertificateApproval
certsigning.PluginName, // CertificateSigning
ctbattest.PluginName, // ClusterTrustBundleAttest
certsubjectrestriction.PluginName, // CertificateSubjectRestriction
defaultingressclass.PluginName, // DefaultIngressClass
podsecurity.PluginName, // PodSecurity
validatingadmissionpolicy.PluginName, // ValidatingAdmissionPolicy, only active when feature gate ValidatingAdmissionPolicy is enabled
)
// DefaultOffAdmissionPlugins get admission plugins off by default for kcp.
func DefaultOffAdmissionPlugins() sets.Set[string] {
return sets.New[string](AllOrderedPlugins...).Difference(defaultOnPluginsInKcp)
}