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apiserver.go
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/
apiserver.go
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package aggregatedapiserver
import (
"k8s.io/apimachinery/pkg/version"
"k8s.io/apiserver/pkg/registry/rest"
genericapiserver "k8s.io/apiserver/pkg/server"
"k8s.io/client-go/kubernetes"
"k8s.io/klog/v2"
clusterapis "github.com/karmada-io/karmada/pkg/apis/cluster"
clusterscheme "github.com/karmada-io/karmada/pkg/apis/cluster/scheme"
clusterstorage "github.com/karmada-io/karmada/pkg/registry/cluster/storage"
)
// ExtraConfig holds custom apiserver config
type ExtraConfig struct {
// Add custom config if necessary.
}
// Config defines the config for the apiserver
type Config struct {
GenericConfig *genericapiserver.RecommendedConfig
ExtraConfig ExtraConfig
}
// APIServer contains state for karmada aggregated-apiserver.
type APIServer struct {
GenericAPIServer *genericapiserver.GenericAPIServer
}
type completedConfig struct {
GenericConfig genericapiserver.CompletedConfig
ExtraConfig *ExtraConfig
}
// CompletedConfig embeds a private pointer that cannot be instantiated outside of this package.
type CompletedConfig struct {
*completedConfig
}
// Complete fills in any fields not set that are required to have valid data. It's mutating the receiver.
func (cfg *Config) Complete() CompletedConfig {
c := completedConfig{
cfg.GenericConfig.Complete(),
&cfg.ExtraConfig,
}
c.GenericConfig.Version = &version.Info{
Major: "1",
Minor: "0",
}
return CompletedConfig{&c}
}
func (c completedConfig) New(kubeClient kubernetes.Interface) (*APIServer, error) {
genericServer, err := c.GenericConfig.New("aggregated-apiserver", genericapiserver.NewEmptyDelegate())
if err != nil {
return nil, err
}
server := &APIServer{
GenericAPIServer: genericServer,
}
apiGroupInfo := genericapiserver.NewDefaultAPIGroupInfo(clusterapis.GroupName, clusterscheme.Scheme, clusterscheme.ParameterCodec, clusterscheme.Codecs)
clusterStorage, err := clusterstorage.NewStorage(clusterscheme.Scheme, kubeClient, c.GenericConfig.RESTOptionsGetter)
if err != nil {
klog.Errorf("Unable to create REST storage for a resource due to %v, will die", err)
return nil, err
}
v1alpha1cluster := map[string]rest.Storage{}
v1alpha1cluster["clusters"] = clusterStorage.Cluster
v1alpha1cluster["clusters/status"] = clusterStorage.Status
v1alpha1cluster["clusters/proxy"] = clusterStorage.Proxy
apiGroupInfo.VersionedResourcesStorageMap["v1alpha1"] = v1alpha1cluster
if err = server.GenericAPIServer.InstallAPIGroup(&apiGroupInfo); err != nil {
return nil, err
}
return server, nil
}