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client.go
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client.go
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package client
import (
"context"
"fmt"
coreV1 "k8s.io/api/core/v1"
metaV1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes"
"sync"
)
type ConnectorFunc func() (kubernetes.Interface, error)
type Client struct {
Connect ConnectorFunc
lock sync.Mutex
kClient kubernetes.Interface
}
func (c *Client) client() kubernetes.Interface {
c.lock.Lock()
defer c.lock.Unlock()
if c.kClient == nil {
var err error
if c.kClient, err = c.Connect(); err != nil {
panic(fmt.Errorf("failed to connect to cluster: %w", err))
}
}
return c.kClient
}
func (c *Client) GetPodsForLabelSelector(ctx context.Context, namespace string, labelSelector string) ([]coreV1.Pod, error) {
pods, err := c.client().
CoreV1().
Pods(namespace).
List(ctx, metaV1.ListOptions{LabelSelector: labelSelector})
if err != nil {
return nil, err
}
return pods.Items, err
}
func (c *Client) DeletePod(ctx context.Context, namespace, name string) error {
return c.client().CoreV1().Pods(namespace).Delete(ctx, name, metaV1.DeleteOptions{})
}
func (c *Client) Disconnect() {
c.lock.Lock()
defer c.lock.Unlock()
c.kClient = nil
}