-
Notifications
You must be signed in to change notification settings - Fork 459
/
pod_executor.go
68 lines (57 loc) · 1.61 KB
/
pod_executor.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
// SPDX-FileCopyrightText: 2024 SAP SE or an SAP affiliate company and Gardener contributors
//
// SPDX-License-Identifier: Apache-2.0
package framework
import (
"bytes"
"context"
"fmt"
"io"
"net/http"
"strings"
"k8s.io/client-go/tools/remotecommand"
"github.com/gardener/gardener/pkg/client/kubernetes"
)
// NewPodExecutor returns a podExecutor
func NewPodExecutor(client kubernetes.Interface) PodExecutor {
return &podExecutor{
client: client,
}
}
// PodExecutor is the pod executor interface
type PodExecutor interface {
Execute(ctx context.Context, namespace, name, containerName, command string) (io.Reader, error)
}
type podExecutor struct {
client kubernetes.Interface
}
// Execute executes a command on a pod
func (p *podExecutor) Execute(ctx context.Context, namespace, name, containerName, command string) (io.Reader, error) {
var stdout, stderr bytes.Buffer
request := p.client.Kubernetes().CoreV1().RESTClient().
Post().
Resource("pods").
Name(name).
Namespace(namespace).
SubResource("exec").
Param("container", containerName).
Param("command", "/bin/sh").
Param("stdin", "true").
Param("stdout", "true").
Param("stderr", "true").
Param("tty", "false")
executor, err := remotecommand.NewSPDYExecutor(p.client.RESTConfig(), http.MethodPost, request.URL())
if err != nil {
return nil, fmt.Errorf("failed to initialized the command exector: %v", err)
}
err = executor.StreamWithContext(ctx, remotecommand.StreamOptions{
Stdin: strings.NewReader(command),
Stdout: &stdout,
Stderr: &stderr,
Tty: false,
})
if err != nil {
return &stderr, err
}
return &stdout, nil
}