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client.go
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client.go
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package client
import (
"time"
openshiftapps "github.com/openshift/client-go/apps/clientset/versioned"
routev1client "github.com/openshift/client-go/route/clientset/versioned/typed/route/v1"
"github.com/skupperproject/skupper/api/types"
"github.com/skupperproject/skupper/pkg/domain"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/runtime/serializer"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/discovery"
"k8s.io/client-go/dynamic"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/kubernetes/scheme"
_ "k8s.io/client-go/plugin/pkg/client/auth"
restclient "k8s.io/client-go/rest"
"k8s.io/client-go/tools/clientcmd"
"github.com/skupperproject/skupper/pkg/kube"
)
var defaultRetry = wait.Backoff{
Steps: 100,
Duration: 10 * time.Millisecond,
Factor: 1.0,
Jitter: 0.1,
}
// A VAN Client manages orchestration and communications with the network components
type VanClient struct {
Namespace string
KubeClient kubernetes.Interface
RouteClient *routev1client.RouteV1Client
OCAppsClient openshiftapps.Interface
RestConfig *restclient.Config
DynamicClient dynamic.Interface
DiscoveryClient *discovery.DiscoveryClient
LinkHandler domain.LinkHandler
}
func (cli *VanClient) GetNamespace() string {
return cli.Namespace
}
func (cli *VanClient) GetKubeClient() kubernetes.Interface {
return cli.KubeClient
}
func (cli *VanClient) GetDynamicClient() dynamic.Interface {
return cli.DynamicClient
}
func (cli *VanClient) GetDiscoveryClient() *discovery.DiscoveryClient {
return cli.DiscoveryClient
}
func (cli *VanClient) GetVersion(component string, name string) string {
return kube.GetComponentVersion(cli.Namespace, cli.KubeClient, component, name)
}
func NewClient(namespace string, context string, kubeConfigPath string) (*VanClient, error) {
c := &VanClient{}
loadingRules := clientcmd.NewDefaultClientConfigLoadingRules()
if kubeConfigPath != "" {
loadingRules = &clientcmd.ClientConfigLoadingRules{ExplicitPath: kubeConfigPath}
}
kubeconfig := clientcmd.NewNonInteractiveDeferredLoadingClientConfig(
loadingRules,
&clientcmd.ConfigOverrides{
CurrentContext: context,
},
)
restconfig, err := kubeconfig.ClientConfig()
if err != nil {
return c, err
}
restconfig.ContentConfig.GroupVersion = &schema.GroupVersion{Version: "v1"}
restconfig.APIPath = "/api"
restconfig.NegotiatedSerializer = serializer.WithoutConversionCodecFactory{CodecFactory: scheme.Codecs}
c.RestConfig = restconfig
c.KubeClient, err = kubernetes.NewForConfig(restconfig)
if err != nil {
return c, err
}
dc, err := discovery.NewDiscoveryClientForConfig(restconfig)
resources, err := dc.ServerResourcesForGroupVersion("route.openshift.io/v1")
if err == nil && len(resources.APIResources) > 0 {
c.RouteClient, err = routev1client.NewForConfig(restconfig)
if err != nil {
return c, err
}
}
resources, err = dc.ServerResourcesForGroupVersion("apps.openshift.io/v1")
if err == nil && len(resources.APIResources) > 0 {
c.OCAppsClient, err = openshiftapps.NewForConfig(restconfig)
if err != nil {
return c, err
}
}
c.DiscoveryClient = dc
if namespace == "" {
c.Namespace, _, err = kubeconfig.Namespace()
if err != nil {
return c, err
}
} else {
c.Namespace = namespace
}
c.DynamicClient, err = dynamic.NewForConfig(restconfig)
if err != nil {
return c, err
}
return c, nil
}
func (cli *VanClient) GetIngressDefault() string {
if cli.RouteClient == nil {
return types.IngressLoadBalancerString
}
return types.IngressRouteString
}