forked from thetirefire/badidea
/
options.go
147 lines (119 loc) · 5.08 KB
/
options.go
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package options
import (
v1 "k8s.io/api/core/v1"
utilerrors "k8s.io/apimachinery/pkg/util/errors"
clientset "k8s.io/client-go/kubernetes"
clientgokubescheme "k8s.io/client-go/kubernetes/scheme"
restclient "k8s.io/client-go/rest"
"k8s.io/client-go/tools/record"
cliflag "k8s.io/component-base/cli/flag"
"k8s.io/component-base/logs"
"k8s.io/component-base/metrics"
cmoptions "k8s.io/controller-manager/options"
kubectrlmgrconfigv1alpha1 "k8s.io/kube-controller-manager/config/v1alpha1"
kubectrlmgrconfig "k8s.io/kubernetes/pkg/controller/apis/config"
kubectrlmgrconfigscheme "k8s.io/kubernetes/pkg/controller/apis/config/scheme"
"k8s.io/kubernetes/pkg/controller/garbagecollector"
garbagecollectorconfig "k8s.io/kubernetes/pkg/controller/garbagecollector/config"
// add the kubernetes feature gates
_ "k8s.io/kubernetes/pkg/features"
kubecontrollerconfig "github.com/clyang82/multicluster-global-hub-lite/server/controllers/kubecontroller/config"
)
// KubeControllerManagerOptions is the main context object for the kube-controller manager.
type KubeControllerManagerOptions struct {
Generic *cmoptions.GenericControllerManagerConfigurationOptions
CSRSigningController *CSRSigningControllerOptions
GarbageCollectorController *GarbageCollectorControllerOptions
NamespaceController *NamespaceControllerOptions
Metrics *metrics.Options
Logs *logs.Options
ShowHiddenMetricsForVersion string
}
// NewKubeControllerManagerOptions creates a new KubeControllerManagerOptions with a default config.
func NewKubeControllerManagerOptions() (*KubeControllerManagerOptions, error) {
componentConfig, err := NewDefaultComponentConfig()
if err != nil {
return nil, err
}
s := KubeControllerManagerOptions{
Generic: cmoptions.NewGenericControllerManagerConfigurationOptions(&componentConfig.Generic),
CSRSigningController: &CSRSigningControllerOptions{
&componentConfig.CSRSigningController,
},
GarbageCollectorController: &GarbageCollectorControllerOptions{
&componentConfig.GarbageCollectorController,
},
NamespaceController: &NamespaceControllerOptions{
&componentConfig.NamespaceController,
},
Metrics: metrics.NewOptions(),
Logs: logs.NewOptions(),
}
gcIgnoredResources := make([]garbagecollectorconfig.GroupResource, 0, len(garbagecollector.DefaultIgnoredResources()))
for r := range garbagecollector.DefaultIgnoredResources() {
gcIgnoredResources = append(gcIgnoredResources, garbagecollectorconfig.GroupResource{Group: r.Group, Resource: r.Resource})
}
s.GarbageCollectorController.GCIgnoredResources = gcIgnoredResources
return &s, nil
}
// NewDefaultComponentConfig returns kube-controller manager configuration object.
func NewDefaultComponentConfig() (kubectrlmgrconfig.KubeControllerManagerConfiguration, error) {
versioned := kubectrlmgrconfigv1alpha1.KubeControllerManagerConfiguration{}
kubectrlmgrconfigscheme.Scheme.Default(&versioned)
internal := kubectrlmgrconfig.KubeControllerManagerConfiguration{}
if err := kubectrlmgrconfigscheme.Scheme.Convert(&versioned, &internal, nil); err != nil {
return internal, err
}
return internal, nil
}
// Flags returns flags for a specific APIServer by section name
func (s *KubeControllerManagerOptions) Flags() cliflag.NamedFlagSets {
fss := cliflag.NamedFlagSets{}
s.CSRSigningController.AddFlags(fss.FlagSet("csrsigning controller"))
s.GarbageCollectorController.AddFlags(fss.FlagSet("garbagecollector controller"))
s.NamespaceController.AddFlags(fss.FlagSet("namespace controller"))
return fss
}
// ApplyTo fills up controller manager config with options.
func (s *KubeControllerManagerOptions) ApplyTo(c *kubecontrollerconfig.Config) error {
if err := s.Generic.ApplyTo(&c.ComponentConfig.Generic); err != nil {
return err
}
if err := s.CSRSigningController.ApplyTo(&c.ComponentConfig.CSRSigningController); err != nil {
return err
}
if err := s.GarbageCollectorController.ApplyTo(&c.ComponentConfig.GarbageCollectorController); err != nil {
return err
}
if err := s.NamespaceController.ApplyTo(&c.ComponentConfig.NamespaceController); err != nil {
return err
}
return nil
}
// Validate is used to validate the options and config before launching the controller manager
func (s *KubeControllerManagerOptions) Validate() error {
var errs []error
errs = append(errs, s.CSRSigningController.Validate()...)
errs = append(errs, s.GarbageCollectorController.Validate()...)
errs = append(errs, s.NamespaceController.Validate()...)
return utilerrors.NewAggregate(errs)
}
// Config return a controller manager config objective
func (s KubeControllerManagerOptions) Config(cfg *restclient.Config) (*kubecontrollerconfig.Config, error) {
client, err := clientset.NewForConfig(cfg)
if err != nil {
return nil, err
}
eventBroadcaster := record.NewBroadcaster()
eventRecorder := eventBroadcaster.NewRecorder(clientgokubescheme.Scheme, v1.EventSource{Component: "kube-controller"})
c := &kubecontrollerconfig.Config{
Client: client,
Kubeconfig: cfg,
EventBroadcaster: eventBroadcaster,
EventRecorder: eventRecorder,
}
if err := s.ApplyTo(c); err != nil {
return nil, err
}
return c, nil
}