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clients.go
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clients.go
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/*
* Copyright 2021 Red Hat, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package clients
import (
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/kubernetes/scheme"
"k8s.io/klog/v2"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/client/config"
nrtv1alpha1 "github.com/k8stopologyawareschedwg/noderesourcetopology-api/pkg/apis/topology/v1alpha1"
numaresourcesoperatorv1alpha1 "github.com/openshift-kni/numaresources-operator/api/numaresourcesoperator/v1alpha1"
mcov1 "github.com/openshift/machine-config-operator/pkg/apis/machineconfiguration.openshift.io/v1"
apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
)
var (
// Client defines the API client to run CRUD operations, that will be used for testing
Client client.Client
// K8sClient defines k8s client to run subresource operations, for example you should use it to get pod logs
K8sClient *kubernetes.Clientset
// ClientsEnabled tells if the client from the package can be used
ClientsEnabled bool
)
func init() {
// Setup Scheme for all resources
if err := mcov1.AddToScheme(scheme.Scheme); err != nil {
klog.Exit(err.Error())
}
if err := numaresourcesoperatorv1alpha1.AddToScheme(scheme.Scheme); err != nil {
klog.Exit(err.Error())
}
if err := apiextensionsv1.AddToScheme(scheme.Scheme); err != nil {
klog.Exit(err.Error())
}
if err := nrtv1alpha1.AddToScheme(scheme.Scheme); err != nil {
klog.Exit(err.Error())
}
var err error
Client, err = New()
if err != nil {
klog.Info("Failed to initialize client, check the KUBECONFIG env variable", err.Error())
ClientsEnabled = false
return
}
K8sClient, err = NewK8s()
if err != nil {
klog.Info("Failed to initialize k8s client, check the KUBECONFIG env variable", err.Error())
ClientsEnabled = false
return
}
ClientsEnabled = true
}
// New returns a controller-runtime client.
func New() (client.Client, error) {
cfg, err := config.GetConfig()
if err != nil {
return nil, err
}
c, err := client.New(cfg, client.Options{})
return c, err
}
// NewK8s returns a kubernetes clientset
func NewK8s() (*kubernetes.Clientset, error) {
cfg, err := config.GetConfig()
if err != nil {
return nil, err
}
clientset, err := kubernetes.NewForConfig(cfg)
if err != nil {
klog.Exit(err.Error())
}
return clientset, nil
}