/
k8s.go
65 lines (54 loc) · 1.75 KB
/
k8s.go
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package utils
import (
"fmt"
apiextensionsclientset "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest"
"k8s.io/client-go/tools/clientcmd"
redisfailoverclientset "github.com/maolin-sen/redis-operator/client/k8s/clientset/versioned"
)
const (
defCliQPS = 100
defCliBurst = 100
)
// LoadKubernetesConfig loads kubernetes configuration based on flags.
func LoadKubernetesConfig(flags *CMDFlags) (*rest.Config, error) {
var cfg *rest.Config
// If devel mode then use configuration flag path.
if flags.Development {
config, err := clientcmd.BuildConfigFromFlags("", flags.KubeConfig)
if err != nil {
return nil, fmt.Errorf("could not load configuration: %s", err)
}
cfg = config
} else {
config, err := rest.InClusterConfig()
if err != nil {
return nil, fmt.Errorf("error loading kubernetes configuration inside cluster, check app is running outside kubernetes cluster or run in development mode: %s", err)
}
cfg = config
}
cfg.QPS = defCliQPS
cfg.Burst = defCliBurst
return cfg, nil
}
// CreateKubernetesClients create the clients to connect to kubernetes
func CreateKubernetesClients(flags *CMDFlags) (kubernetes.Interface, redisfailoverclientset.Interface, apiextensionsclientset.Interface, error) {
config, err := LoadKubernetesConfig(flags)
if err != nil {
return nil, nil, nil, err
}
clientset, err := kubernetes.NewForConfig(config)
if err != nil {
return nil, nil, nil, err
}
customClientset, err := redisfailoverclientset.NewForConfig(config)
if err != nil {
return nil, nil, nil, err
}
aeClientset, err := apiextensionsclientset.NewForConfig(config)
if err != nil {
return nil, nil, nil, err
}
return clientset, customClientset, aeClientset, nil
}