-
Notifications
You must be signed in to change notification settings - Fork 3.2k
/
client.go
145 lines (130 loc) · 4.24 KB
/
client.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
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
package k8sapi
import (
"bytes"
"context"
"fmt"
"io"
"syscall"
"time"
corev1 "k8s.io/api/core/v1"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/kubernetes"
restclient "k8s.io/client-go/rest"
"github.com/argoproj/argo-workflows/v3/errors"
errorsutil "github.com/argoproj/argo-workflows/v3/util/errors"
waitutil "github.com/argoproj/argo-workflows/v3/util/wait"
"github.com/argoproj/argo-workflows/v3/workflow/common"
execcommon "github.com/argoproj/argo-workflows/v3/workflow/executor/common"
)
type k8sAPIClient struct {
clientset kubernetes.Interface
config *restclient.Config
podName string
namespace string
}
var _ execcommon.KubernetesClientInterface = &k8sAPIClient{}
func newK8sAPIClient(clientset kubernetes.Interface, config *restclient.Config, podName, namespace string) *k8sAPIClient {
return &k8sAPIClient{
clientset: clientset,
config: config,
podName: podName,
namespace: namespace,
}
}
func (c *k8sAPIClient) CreateArchive(ctx context.Context, containerName, sourcePath string) (*bytes.Buffer, error) {
command := []string{"tar", "cf", "-", sourcePath}
exec, err := common.ExecPodContainer(c.config, c.namespace, c.podName, containerName, true, false, command...)
if err != nil {
return nil, err
}
stdOut, _, err := common.GetExecutorOutput(exec)
if err != nil {
return nil, err
}
return stdOut, nil
}
func (c *k8sAPIClient) getLogsAsStream(ctx context.Context, containerName string) (io.ReadCloser, error) {
return c.clientset.CoreV1().Pods(c.namespace).
GetLogs(c.podName, &corev1.PodLogOptions{Container: containerName, SinceTime: &metav1.Time{}}).Stream(ctx)
}
var backoffOver30s = wait.Backoff{
Duration: 1 * time.Second,
Steps: 7,
Factor: 2,
}
func (c *k8sAPIClient) getPod(ctx context.Context) (*corev1.Pod, error) {
var pod *corev1.Pod
err := waitutil.Backoff(backoffOver30s, func() (bool, error) {
var err error
pod, err = c.clientset.CoreV1().Pods(c.namespace).Get(ctx, c.podName, metav1.GetOptions{})
return !errorsutil.IsTransientErr(err), err
})
return pod, err
}
func (c *k8sAPIClient) GetContainerStatus(ctx context.Context, containerName string) (*corev1.Pod, *corev1.ContainerStatus, error) {
pod, containerStatuses, err := c.GetContainerStatuses(ctx)
if err != nil {
return nil, nil, err
}
for _, s := range containerStatuses {
if s.Name != containerName {
continue
}
return pod, &s, nil
}
return nil, nil, errors.New(errors.CodeNotFound, fmt.Sprintf("container %q is not found in the pod %s", containerName, c.podName))
}
func (c *k8sAPIClient) GetContainerStatuses(ctx context.Context) (*corev1.Pod, []corev1.ContainerStatus, error) {
pod, err := c.getPod(ctx)
if err != nil {
return nil, nil, err
}
return pod, pod.Status.ContainerStatuses, nil
}
func (c *k8sAPIClient) KillContainer(pod *corev1.Pod, container *corev1.ContainerStatus, sig syscall.Signal) error {
command := []string{"/bin/sh", "-c", fmt.Sprintf("kill -%d 1", sig)}
exec, err := common.ExecPodContainer(c.config, c.namespace, c.podName, container.Name, false, true, command...)
if err != nil {
return err
}
_, _, err = common.GetExecutorOutput(exec)
return err
}
func (c *k8sAPIClient) killGracefully(ctx context.Context, containerNames []string, terminationGracePeriodDuration time.Duration) error {
return execcommon.KillGracefully(ctx, c, containerNames, terminationGracePeriodDuration)
}
func (c *k8sAPIClient) until(ctx context.Context, f func(pod *corev1.Pod) bool) error {
podInterface := c.clientset.CoreV1().Pods(c.namespace)
for {
done, err := func() (bool, error) {
w, err := podInterface.Watch(ctx, metav1.ListOptions{FieldSelector: "metadata.name=" + c.podName})
if err != nil {
return true, fmt.Errorf("failed to establish pod watch: %w", err)
}
defer w.Stop()
for {
select {
case <-ctx.Done():
return true, ctx.Err()
case event, open := <-w.ResultChan():
if !open {
return false, fmt.Errorf("channel not open")
}
pod, ok := event.Object.(*corev1.Pod)
if !ok {
return true, apierrors.FromObject(event.Object)
}
done := f(pod)
if done {
return true, nil
}
}
}
}()
if done {
return err
}
}
}