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ca.go
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ca.go
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package ca
import (
"time"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
coreinformers "k8s.io/client-go/informers/core/v1"
"k8s.io/client-go/kubernetes"
corelisters "k8s.io/client-go/listers/core/v1"
"k8s.io/client-go/tools/cache"
"k8s.io/client-go/tools/record"
"github.com/jetstack-experimental/cert-manager/pkg/apis/certmanager/v1alpha1"
"github.com/jetstack-experimental/cert-manager/pkg/client/clientset"
"github.com/jetstack-experimental/cert-manager/pkg/issuer"
)
// CA is a simple CA implementation backed by the Kubernetes API server.
// A secret resource is used to store a CA public and private key that is then
// used to sign certificates.
type CA struct {
issuer v1alpha1.GenericIssuer
cl kubernetes.Interface
cmclient clientset.Interface
recorder record.EventRecorder
resourceNamespace string
secretsLister corelisters.SecretLister
}
func NewCA(issuer v1alpha1.GenericIssuer,
cl kubernetes.Interface,
cmclient clientset.Interface,
recorder record.EventRecorder,
resourceNamespace string,
secretInformer cache.SharedIndexInformer) (issuer.Interface, error) {
secretsLister := corelisters.NewSecretLister(secretInformer.GetIndexer())
return &CA{
issuer: issuer,
cl: cl,
cmclient: cmclient,
recorder: recorder,
resourceNamespace: resourceNamespace,
secretsLister: secretsLister,
}, nil
}
const (
ControllerName = "ca"
)
func init() {
// TODO: This constructor function below is called to create instances of
// the Issuer from a GenericIssuer and Context. However, we currently
// construct a new SharedInformer for every single item processed. This
// will be the same SharedInformer as other loops use, thanks to the
// SharedInformerFactory, however it seems a bit unnatural to create a
// lister per-request, even if that lister does share the same underlying
// indexer.
issuer.Register(ControllerName, func(issuer v1alpha1.GenericIssuer, ctx *issuer.Context) (issuer.Interface, error) {
// We do this little dance because of the way our SharedInformerFactory is
// written. It'd be great if this weren't necessary.
resourceNamespace := issuer.GetObjectMeta().Namespace
informerNS := ctx.Namespace
if resourceNamespace == "" {
resourceNamespace = ctx.ClusterResourceNamespace
informerNS = ctx.ClusterResourceNamespace
}
return NewCA(
issuer,
ctx.Client,
ctx.CMClient,
ctx.Recorder,
resourceNamespace,
ctx.SharedInformerFactory.InformerFor(
informerNS,
metav1.GroupVersionKind{Version: "v1", Kind: "Secret"},
coreinformers.NewSecretInformer(ctx.Client, resourceNamespace, time.Second*30, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc})),
)
})
}