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servicebroker.go
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servicebroker.go
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package servicebroker
import (
"os"
"time"
"k8s.io/apimachinery/pkg/api/meta"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/discovery"
cacheddiscovery "k8s.io/client-go/discovery/cached"
"k8s.io/client-go/dynamic"
kclientset "k8s.io/client-go/kubernetes"
restclient "k8s.io/client-go/rest"
"k8s.io/client-go/restmapper"
templateclientset "github.com/openshift/client-go/template/clientset/versioned"
v1template "github.com/openshift/client-go/template/clientset/versioned/typed/template/v1"
templateinformer "github.com/openshift/client-go/template/informers/externalversions/template/v1"
templatelister "github.com/openshift/client-go/template/listers/template/v1"
"github.com/openshift/origin/pkg/templateservicebroker/openservicebroker/api"
)
// Broker represents the template service broker. It implements
// openservicebroker/api.Broker.
type Broker struct {
kc kclientset.Interface
templateclient v1template.TemplateV1Interface
lister templatelister.TemplateLister
hasSynced func() bool
templateNamespaces map[string]struct{}
restmapper meta.RESTMapper
dynamicClient dynamic.Interface
// TODO - remove this when https://github.com/kubernetes/kubernetes/issues/54940 is fixed
// a delay between when we create the brokertemplateinstance and the
// templateinstance.
gcCreateDelay time.Duration
}
var _ api.Broker = &Broker{}
// NewBroker - returns a new Broker
func NewBroker(saKubeClientConfig *restclient.Config, informer templateinformer.TemplateInformer, namespaces []string) (*Broker, error) {
templateNamespaces := map[string]struct{}{}
for _, namespace := range namespaces {
templateNamespaces[namespace] = struct{}{}
}
kubeClient, err := kclientset.NewForConfig(saKubeClientConfig)
if err != nil {
return nil, err
}
templateClient, err := templateclientset.NewForConfig(saKubeClientConfig)
if err != nil {
return nil, err
}
dynamicClient, err := dynamic.NewForConfig(saKubeClientConfig)
if err != nil {
return nil, err
}
// TODO use the genericclioptions and use "normal" construction
// The more groups you have, the more discovery requests you need to make.
// given 25 groups (our groups + a few custom resources) with one-ish version each, discovery needs to make 50 requests
// double it just so we don't end up here again for a while. This config is only used for discovery.
discoveryConfig := restclient.CopyConfig(saKubeClientConfig)
discoveryConfig.Burst = 100
discoveryClient, err := discovery.NewDiscoveryClientForConfig(discoveryConfig)
if err != nil {
return nil, err
}
cachedDiscovery := cacheddiscovery.NewMemCacheClient(discoveryClient)
restMapper := restmapper.NewDeferredDiscoveryRESTMapper(cachedDiscovery)
// start keeping the restmapper up to date with reality
restMapper.Reset()
go wait.Until(restMapper.Reset, 30*time.Second, wait.NeverStop)
delay := 5 * time.Second
value := os.Getenv("TEMPLATE_SERVICE_BROKER_GC_DELAY")
if len(value) != 0 {
if v, err := time.ParseDuration(value); err == nil {
delay = v
}
}
b := &Broker{
kc: kubeClient,
templateclient: templateClient.Template(),
lister: informer.Lister(),
hasSynced: informer.Informer().HasSynced,
templateNamespaces: templateNamespaces,
restmapper: restMapper,
dynamicClient: dynamicClient,
gcCreateDelay: delay,
}
return b, nil
}