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kubectl.go
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kubectl.go
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package testing
import (
"context"
"encoding/json"
"fmt"
"os"
"os/exec"
"strings"
"time"
"github.com/actions/actions-runner-controller/testing/runtime"
)
type Kubectl struct {
runtime.Cmdr
}
type KubectlConfig struct {
Env []string
NoValidate bool
Timeout time.Duration
Namespace string
}
func (k KubectlConfig) WithTimeout(o time.Duration) KubectlConfig {
k.Timeout = o
return k
}
func (k *Kubectl) EnsureNS(ctx context.Context, name string, cfg KubectlConfig) error {
if _, err := k.CombinedOutput(k.kubectlCmd(ctx, "get", []string{"ns", name}, cfg)); err != nil {
if _, err := k.CombinedOutput(k.kubectlCmd(ctx, "create", []string{"ns", name}, cfg)); err != nil {
return err
}
}
return nil
}
func (k *Kubectl) GetClusterRoleBinding(ctx context.Context, name string, cfg KubectlConfig) (string, error) {
o, err := k.CombinedOutput(k.kubectlCmd(ctx, "get", []string{"clusterrolebinding", name}, cfg))
if err != nil {
return "", err
}
return o, nil
}
func (k *Kubectl) CreateClusterRoleBindingServiceAccount(ctx context.Context, name string, clusterrole string, sa string, cfg KubectlConfig) error {
_, err := k.CombinedOutput(k.kubectlCmd(ctx, "create", []string{"clusterrolebinding", name, "--clusterrole=" + clusterrole, "--serviceaccount=" + sa}, cfg))
if err != nil {
return err
}
return nil
}
func (k *Kubectl) GetCMLiterals(ctx context.Context, name string, cfg KubectlConfig) (map[string]string, error) {
o, err := k.CombinedOutput(k.kubectlCmd(ctx, "get", []string{"cm", name, "-o=json"}, cfg))
if err != nil {
return nil, err
}
var cm struct {
Data map[string]string `json:"data"`
}
if err := json.Unmarshal([]byte(o), &cm); err != nil {
k.Errorf("Failed unmarshalling this data to JSON:\n%s\n", o)
return nil, fmt.Errorf("unmarshalling json: %w", err)
}
return cm.Data, nil
}
func (k *Kubectl) CreateCMLiterals(ctx context.Context, name string, literals map[string]string, cfg KubectlConfig) error {
args := []string{"cm", name}
for k, v := range literals {
args = append(args, fmt.Sprintf("--from-literal=%s=%s", k, v))
}
if _, err := k.CombinedOutput(k.kubectlCmd(ctx, "create", args, cfg)); err != nil {
return err
}
return nil
}
func (k *Kubectl) DeleteCM(ctx context.Context, name string, cfg KubectlConfig) error {
args := []string{"cm", name}
if _, err := k.CombinedOutput(k.kubectlCmd(ctx, "delete", args, cfg)); err != nil {
return err
}
return nil
}
func (k *Kubectl) Apply(ctx context.Context, path string, cfg KubectlConfig) error {
if _, err := k.CombinedOutput(k.kubectlCmd(ctx, "apply", []string{"-f", path}, cfg)); err != nil {
return err
}
return nil
}
func (k *Kubectl) WaitUntilDeployAvailable(ctx context.Context, name string, cfg KubectlConfig) error {
if _, err := k.CombinedOutput(k.kubectlCmd(ctx, "wait", []string{"deploy/" + name, "--for=condition=available"}, cfg)); err != nil {
return err
}
return nil
}
func (k *Kubectl) FindPods(ctx context.Context, label string, cfg KubectlConfig) ([]string, error) {
args := []string{"po", "-l", label, "-o", `jsonpath={range .items[*]}{.metadata.name}{"\n"}`}
out, err := k.CombinedOutput(k.kubectlCmd(ctx, "get", args, cfg))
if err != nil {
return nil, err
}
var pods []string
for _, l := range strings.Split(out, "\n") {
if l != "" {
pods = append(pods, l)
}
}
return pods, nil
}
func (k *Kubectl) DeletePods(ctx context.Context, names []string, cfg KubectlConfig) error {
args := []string{"po"}
args = append(args, names...)
if _, err := k.CombinedOutput(k.kubectlCmd(ctx, "delete", args, cfg)); err != nil {
return err
}
return nil
}
func (k *Kubectl) kubectlCmd(ctx context.Context, c string, args []string, cfg KubectlConfig) *exec.Cmd {
args = append([]string{c}, args...)
if cfg.NoValidate {
args = append(args, "--validate=false")
}
if cfg.Namespace != "" {
args = append(args, "-n="+cfg.Namespace)
}
if cfg.Timeout > 0 {
args = append(args, fmt.Sprintf("--timeout=%v", cfg.Timeout.String()))
}
cmd := exec.CommandContext(ctx, "kubectl", args...)
cmd.Env = os.Environ()
cmd.Env = append(cmd.Env, cfg.Env...)
return cmd
}