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ceph-csi/internal/util/k8s/client.go
Niels de Vos 60c2afbcca util: NewK8sClient() should not panic on non-Kubernetes clusters
When NewK8sClient() detects and error, it used to call FatalLogMsg()
which causes a panic. There are additional features that can be used on
Kubernetes clusters, but these are not a requirement for most
functionalities of the driver.

Instead of causing a panic, returning an error should suffice. This
allows using the driver on non-Kubernetes clusters again.

Fixes: 
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2021-09-02 11:22:14 +00:00

51 lines
1.3 KiB
Go

/*
Copyright 2020 The CephCSI Authors.
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/LICENSE2.0
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 k8s
import (
"fmt"
"os"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest"
"k8s.io/client-go/tools/clientcmd"
)
// NewK8sClient create kubernetes client.
func NewK8sClient() (*kubernetes.Clientset, error) {
var cfg *rest.Config
var err error
cPath := os.Getenv("KUBERNETES_CONFIG_PATH")
if cPath != "" {
cfg, err = clientcmd.BuildConfigFromFlags("", cPath)
if err != nil {
return nil, fmt.Errorf("failed to get cluster config from %q: %w", cPath, err)
}
} else {
cfg, err = rest.InClusterConfig()
if err != nil {
return nil, fmt.Errorf("failed to get cluster config: %w", err)
}
}
client, err := kubernetes.NewForConfig(cfg)
if err != nil {
return nil, fmt.Errorf("failed to create client: %w", err)
}
return client, nil
}