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Use metadata informers instead of dynamic informers in controller manager

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All controllers in controller-manager that deal with objects generically
work with those objects without needing the full object. Update the GC
and quota controller to use PartialObjectMetadata input objects which
is faster and more efficient.
This commit is contained in:
Clayton Coleman 2019-07-10 18:37:24 -04:00
parent 98d87a4f03
commit d631f9b7e9
No known key found for this signature in database
GPG Key ID: 3D16906B4F1C5CB3
9 changed files with 43 additions and 44 deletions
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2
cmd/kube-controller-manager/app/BUILD
View File

@ -121,10 +121,10 @@ go_library(
"//staging/src/k8s.io/client-go/discovery/cached:go_default_library",
"//staging/src/k8s.io/client-go/discovery/cached/memory:go_default_library",
"//staging/src/k8s.io/client-go/dynamic:go_default_library",
"//staging/src/k8s.io/client-go/dynamic/dynamicinformer:go_default_library",
"//staging/src/k8s.io/client-go/informers:go_default_library",
"//staging/src/k8s.io/client-go/kubernetes:go_default_library",
"//staging/src/k8s.io/client-go/metadata:go_default_library",
"//staging/src/k8s.io/client-go/metadata/metadatainformer:go_default_library",
"//staging/src/k8s.io/client-go/rest:go_default_library",
"//staging/src/k8s.io/client-go/restmapper:go_default_library",
"//staging/src/k8s.io/client-go/scale:go_default_library",

42
cmd/kube-controller-manager/app/controllermanager.go
View File

@ -31,7 +31,7 @@ import (
"github.com/spf13/cobra"
"k8s.io/api/core/v1"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/runtime/schema"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/apimachinery/pkg/util/sets"
@ -43,10 +43,10 @@ import (
utilfeature "k8s.io/apiserver/pkg/util/feature"
"k8s.io/apiserver/pkg/util/term"
cacheddiscovery "k8s.io/client-go/discovery/cached"
"k8s.io/client-go/dynamic"
"k8s.io/client-go/dynamic/dynamicinformer"
"k8s.io/client-go/informers"
clientset "k8s.io/client-go/kubernetes"
"k8s.io/client-go/metadata"
"k8s.io/client-go/metadata/metadatainformer"
restclient "k8s.io/client-go/rest"
"k8s.io/client-go/restmapper"
"k8s.io/client-go/tools/leaderelection"
@ -239,7 +239,7 @@ func Run(c *config.CompletedConfig, stopCh <-chan struct{}) error {
}
controllerContext.InformerFactory.Start(controllerContext.Stop)
controllerContext.GenericInformerFactory.Start(controllerContext.Stop)
controllerContext.ObjectOrMetadataInformerFactory.Start(controllerContext.Stop)
close(controllerContext.InformersStarted)
select {}
@ -295,9 +295,11 @@ type ControllerContext struct {
// InformerFactory gives access to informers for the controller.
InformerFactory informers.SharedInformerFactory
// GenericInformerFactory gives access to informers for typed resources
// and dynamic resources.
GenericInformerFactory controller.InformerFactory
// ObjectOrMetadataInformerFactory gives access to informers for typed resources
// and dynamic resources by their metadata. All generic controllers currently use
// object metadata - if a future controller needs access to the full object this
// would become GenericInformerFactory and take a dynamic client.
ObjectOrMetadataInformerFactory controller.InformerFactory
// ComponentConfig provides access to init options for a given controller
ComponentConfig kubectrlmgrconfig.KubeControllerManagerConfiguration
@ -448,8 +450,8 @@ func CreateControllerContext(s *config.CompletedConfig, rootClientBuilder, clien
versionedClient := rootClientBuilder.ClientOrDie("shared-informers")
sharedInformers := informers.NewSharedInformerFactory(versionedClient, ResyncPeriod(s)())
dynamicClient := dynamic.NewForConfigOrDie(rootClientBuilder.ConfigOrDie("dynamic-informers"))
dynamicInformers := dynamicinformer.NewDynamicSharedInformerFactory(dynamicClient, ResyncPeriod(s)())
metadataClient := metadata.NewForConfigOrDie(rootClientBuilder.ConfigOrDie("metadata-informers"))
metadataInformers := metadatainformer.NewSharedInformerFactory(metadataClient, ResyncPeriod(s)())
// If apiserver is not running we should wait for some time and fail only then. This is particularly
// important when we start apiserver and controller manager at the same time.
@ -477,17 +479,17 @@ func CreateControllerContext(s *config.CompletedConfig, rootClientBuilder, clien
}
ctx := ControllerContext{
ClientBuilder: clientBuilder,
InformerFactory: sharedInformers,
GenericInformerFactory: controller.NewInformerFactory(sharedInformers, dynamicInformers),
ComponentConfig: s.ComponentConfig,
RESTMapper: restMapper,
AvailableResources: availableResources,
Cloud: cloud,
LoopMode: loopMode,
Stop: stop,
InformersStarted: make(chan struct{}),
ResyncPeriod: ResyncPeriod(s),
ClientBuilder: clientBuilder,
InformerFactory: sharedInformers,
ObjectOrMetadataInformerFactory: controller.NewInformerFactory(sharedInformers, metadataInformers),
ComponentConfig: s.ComponentConfig,
RESTMapper: restMapper,
AvailableResources: availableResources,
Cloud: cloud,
LoopMode: loopMode,
Stop: stop,
InformersStarted: make(chan struct{}),
ResyncPeriod: ResyncPeriod(s),
}
return ctx, nil
}

5
cmd/kube-controller-manager/app/core.go
View File

@ -33,7 +33,6 @@ import (
"k8s.io/apimachinery/pkg/runtime/schema"
utilfeature "k8s.io/apiserver/pkg/util/feature"
cacheddiscovery "k8s.io/client-go/discovery/cached/memory"
"k8s.io/client-go/dynamic"
clientset "k8s.io/client-go/kubernetes"
"k8s.io/client-go/metadata"
restclient "k8s.io/client-go/rest"
@ -334,7 +333,7 @@ func startResourceQuotaController(ctx ControllerContext) (http.Handler, bool, er
QuotaClient: resourceQuotaControllerClient.CoreV1(),
ResourceQuotaInformer: ctx.InformerFactory.Core().V1().ResourceQuotas(),
ResyncPeriod: controller.StaticResyncPeriodFunc(ctx.ComponentConfig.ResourceQuotaController.ResourceQuotaSyncPeriod.Duration),
InformerFactory: ctx.GenericInformerFactory,
InformerFactory: ctx.ObjectOrMetadataInformerFactory,
ReplenishmentResyncPeriod: ctx.ResyncPeriod,
DiscoveryFunc: discoveryFunc,
IgnoredResourcesFunc: quotaConfiguration.IgnoredResources,
@ -439,7 +438,7 @@ func startGarbageCollectorController(ctx ControllerContext) (http.Handler, bool,
ctx.RESTMapper,
deletableResources,
ignoredResources,
ctx.GenericInformerFactory,
ctx.ObjectOrMetadataInformerFactory,
ctx.InformersStarted,
)
if err != nil {

8
cmd/kube-controller-manager/app/core_test.go
View File

@ -123,10 +123,10 @@ func TestController_DiscoveryError(t *testing.T) {
testClientBuilder := TestClientBuilder{clientset: testClientset}
testInformerFactory := informers.NewSharedInformerFactoryWithOptions(testClientset, time.Duration(1))
ctx := ControllerContext{
ClientBuilder: testClientBuilder,
InformerFactory: testInformerFactory,
GenericInformerFactory: testInformerFactory,
InformersStarted: make(chan struct{}),
ClientBuilder: testClientBuilder,
InformerFactory: testInformerFactory,
ObjectOrMetadataInformerFactory: testInformerFactory,
InformersStarted: make(chan struct{}),
}
for funcName, controllerInit := range controllerInitFuncMap {
_, _, err := controllerInit(ctx)

2
pkg/controller/BUILD
View File

@ -80,11 +80,11 @@ go_library(
"//staging/src/k8s.io/apimachinery/pkg/util/wait:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/watch:go_default_library",
"//staging/src/k8s.io/apiserver/pkg/authentication/serviceaccount:go_default_library",
"//staging/src/k8s.io/client-go/dynamic/dynamicinformer:go_default_library",
"//staging/src/k8s.io/client-go/informers:go_default_library",
"//staging/src/k8s.io/client-go/kubernetes:go_default_library",
"//staging/src/k8s.io/client-go/kubernetes/typed/authentication/v1:go_default_library",
"//staging/src/k8s.io/client-go/kubernetes/typed/core/v1:go_default_library",
"//staging/src/k8s.io/client-go/metadata/metadatainformer:go_default_library",
"//staging/src/k8s.io/client-go/rest:go_default_library",
"//staging/src/k8s.io/client-go/tools/cache:go_default_library",
"//staging/src/k8s.io/client-go/tools/record:go_default_library",

18
pkg/controller/informer_factory.go
View File

@ -18,8 +18,8 @@ package controller
import (
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/client-go/dynamic/dynamicinformer"
"k8s.io/client-go/informers"
"k8s.io/client-go/metadata/metadatainformer"
)
// InformerFactory creates informers for each group version resource.
@ -29,28 +29,28 @@ type InformerFactory interface {
}
type informerFactory struct {
typedInformerFactory informers.SharedInformerFactory
dynamicInformerFactory dynamicinformer.DynamicSharedInformerFactory
typedInformerFactory informers.SharedInformerFactory
metadataInformerFactory metadatainformer.SharedInformerFactory
}
func (i *informerFactory) ForResource(resource schema.GroupVersionResource) (informers.GenericInformer, error) {
informer, err := i.typedInformerFactory.ForResource(resource)
if err != nil {
return i.dynamicInformerFactory.ForResource(resource), nil
return i.metadataInformerFactory.ForResource(resource), nil
}
return informer, nil
}
func (i *informerFactory) Start(stopCh <-chan struct{}) {
i.typedInformerFactory.Start(stopCh)
i.dynamicInformerFactory.Start(stopCh)
i.metadataInformerFactory.Start(stopCh)
}
// NewInformerFactory creates a new InformerFactory which works with both typed
// resources and dynamic resources
func NewInformerFactory(typedInformerFactory informers.SharedInformerFactory, dynamicInformerFactory dynamicinformer.DynamicSharedInformerFactory) InformerFactory {
// resources and metadata-only resources
func NewInformerFactory(typedInformerFactory informers.SharedInformerFactory, metadataInformerFactory metadatainformer.SharedInformerFactory) InformerFactory {
return &informerFactory{
typedInformerFactory: typedInformerFactory,
dynamicInformerFactory: dynamicInformerFactory,
typedInformerFactory: typedInformerFactory,
metadataInformerFactory: metadataInformerFactory,
}
}

2
test/integration/garbagecollector/BUILD
View File

@ -29,10 +29,10 @@ go_test(
"//staging/src/k8s.io/apiserver/pkg/storage/names:go_default_library",
"//staging/src/k8s.io/client-go/discovery/cached/memory:go_default_library",
"//staging/src/k8s.io/client-go/dynamic:go_default_library",
"//staging/src/k8s.io/client-go/dynamic/dynamicinformer:go_default_library",
"//staging/src/k8s.io/client-go/informers:go_default_library",
"//staging/src/k8s.io/client-go/kubernetes:go_default_library",
"//staging/src/k8s.io/client-go/metadata:go_default_library",
"//staging/src/k8s.io/client-go/metadata/metadatainformer:go_default_library",
"//staging/src/k8s.io/client-go/restmapper:go_default_library",
"//staging/src/k8s.io/client-go/tools/cache:go_default_library",
"//test/integration:go_default_library",

6
test/integration/garbagecollector/garbage_collector_test.go
View File

@ -38,10 +38,10 @@ import (
"k8s.io/apiserver/pkg/storage/names"
cacheddiscovery "k8s.io/client-go/discovery/cached/memory"
"k8s.io/client-go/dynamic"
"k8s.io/client-go/dynamic/dynamicinformer"
"k8s.io/client-go/informers"
clientset "k8s.io/client-go/kubernetes"
"k8s.io/client-go/metadata"
"k8s.io/client-go/metadata/metadatainformer"
"k8s.io/client-go/restmapper"
"k8s.io/client-go/tools/cache"
kubeapiservertesting "k8s.io/kubernetes/cmd/kube-apiserver/app/testing"
@ -242,7 +242,7 @@ func setupWithServer(t *testing.T, result *kubeapiservertesting.TestServer, work
t.Fatalf("failed to create dynamicClient: %v", err)
}
sharedInformers := informers.NewSharedInformerFactory(clientSet, 0)
dynamicInformers := dynamicinformer.NewDynamicSharedInformerFactory(dynamicClient, 0)
metadataInformers := metadatainformer.NewSharedInformerFactory(metadataClient, 0)
alwaysStarted := make(chan struct{})
close(alwaysStarted)
gc, err := garbagecollector.NewGarbageCollector(
@ -250,7 +250,7 @@ func setupWithServer(t *testing.T, result *kubeapiservertesting.TestServer, work
restMapper,
deletableResources,
garbagecollector.DefaultIgnoredResources(),
controller.NewInformerFactory(sharedInformers, dynamicInformers),
controller.NewInformerFactory(sharedInformers, metadataInformers),
alwaysStarted,
)
if err != nil {

2
vendor/modules.txt vendored
View File

@ -1315,8 +1315,6 @@ k8s.io/client-go/discovery/cached/disk
k8s.io/client-go/discovery/cached/memory
k8s.io/client-go/discovery/fake
k8s.io/client-go/dynamic
k8s.io/client-go/dynamic/dynamicinformer
k8s.io/client-go/dynamic/dynamiclister
k8s.io/client-go/dynamic/fake
k8s.io/client-go/informers
k8s.io/client-go/informers/admissionregistration