100 lines
2.6 KiB
Go
100 lines
2.6 KiB
Go
package api
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"io/ioutil"
|
|
"os"
|
|
"os/exec"
|
|
"strings"
|
|
)
|
|
|
|
// KubectlApply create resoruces in the provided namespace,
|
|
// if namespace="" then use whatever the kubectl default is
|
|
func KubectlApply(manifests, namespace string) error {
|
|
return kubectlOperation(manifests, "apply", namespace)
|
|
}
|
|
|
|
// KubectlDelete delete resoruces in the provided namespace,
|
|
// if namespace="" then use whatever the kubectl default is
|
|
func KubectlDelete(manifests, namespace string) error {
|
|
return kubectlOperation(manifests, "delete", namespace)
|
|
}
|
|
|
|
func GetKubectlNamespace() string {
|
|
namespace := ""
|
|
cmd := exec.Command("kubectl", "config", "current-context")
|
|
var out, out2 bytes.Buffer
|
|
|
|
cmd.Stdout = &out
|
|
cmd.Stderr = os.Stderr
|
|
err := cmd.Run()
|
|
if err != nil {
|
|
fmt.Printf("kubectl config current-context %q\n", err)
|
|
return namespace
|
|
}
|
|
if out.String() == "" {
|
|
fmt.Println("kubectl config current-context does not return anything")
|
|
return namespace
|
|
}
|
|
|
|
cmd = exec.Command("kubectl", "config", "view", "-o", `jsonpath={.contexts[?(@.name == "`+strings.TrimSpace(out.String())+`")].context.namespace}`)
|
|
cmd.Stdout = &out2
|
|
cmd.Stderr = os.Stderr
|
|
err = cmd.Run()
|
|
if err != nil {
|
|
fmt.Printf("kubectl config view failed with %q\n", err)
|
|
return namespace
|
|
}
|
|
namespace = out2.String()
|
|
return namespace
|
|
}
|
|
|
|
func SetKubectlNamespace(ns string) {
|
|
cmd := exec.Command("kubectl", "config", "set-context", "--namespace="+ns, "--current")
|
|
cmd.Stdout = os.Stdout
|
|
cmd.Stderr = os.Stderr
|
|
err := cmd.Run()
|
|
if err != nil {
|
|
fmt.Printf("kubectl config set-context --namespace failed with %q\n", err)
|
|
}
|
|
}
|
|
|
|
func kubectlOperation(manifests string, oprName string, namespace string) error {
|
|
tempYaml, err := ioutil.TempFile("", "")
|
|
if err != nil {
|
|
fmt.Println("cannot create file ", err)
|
|
return err
|
|
}
|
|
tempYaml.WriteString(manifests)
|
|
|
|
arguments := make([]string, 0)
|
|
arguments = append(arguments, oprName)
|
|
arguments = append(arguments, "-f")
|
|
arguments = append(arguments, tempYaml.Name())
|
|
|
|
if oprName == "apply" {
|
|
arguments = append(arguments, "--validate=false")
|
|
}
|
|
if namespace != "" {
|
|
arguments = append(arguments, "-n")
|
|
arguments = append(arguments, namespace)
|
|
}
|
|
var cmd *exec.Cmd
|
|
if oprName == "apply" {
|
|
cmd = exec.Command("kubectl", arguments...)
|
|
} else {
|
|
cmd = exec.Command("kubectl", arguments...)
|
|
}
|
|
|
|
sterrBuffer := &bytes.Buffer{}
|
|
cmd.Stdout = os.Stdout
|
|
cmd.Stderr = sterrBuffer
|
|
err = cmd.Run()
|
|
if err != nil {
|
|
return fmt.Errorf("kubectl %v failed with: %v, %v, temp k8s yaml file:%v\n", oprName, err, sterrBuffer.String(), tempYaml.Name())
|
|
}
|
|
os.Remove(tempYaml.Name())
|
|
return nil
|
|
}
|