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ops.go
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ops.go
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package utils
import (
log "github.com/sirupsen/logrus"
appsv1 "k8s.io/api/apps/v1"
apiv1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes"
typedv1 "k8s.io/client-go/kubernetes/typed/apps/v1"
"k8s.io/client-go/tools/clientcmd"
)
func CreateDeployment(configPath string, deploymentName string, image string, replicas int32) {
deploymentsClient := getDeploymentClient(configPath)
deployment := getDeployment(deploymentName, image, replicas)
result, err := deploymentsClient.Create(&deployment)
if err != nil {
panic(err)
}
log.Info("Created deployment: ", result.GetObjectMeta().GetName())
}
func UpdateImage(configPath string, deploymentName string, image string) {
deploymentsClient := getDeploymentClient(configPath)
result, err := deploymentsClient.Get(deploymentName, metav1.GetOptions{})
if err != nil {
panic(err)
}
result.Spec.Template.Spec.Containers[0].Image = image
_, updateErr := deploymentsClient.Update(result)
if updateErr != nil {
panic(err)
}
}
func UpdateReplicas(configPath string, deploymentName string, replicas int32) {
deploymentsClient := getDeploymentClient(configPath)
result, err := deploymentsClient.Get(deploymentName, metav1.GetOptions{})
if err != nil {
panic(err)
}
result.Spec.Replicas = int32Ptr(replicas)
_, updateErr := deploymentsClient.Update(result)
if updateErr != nil {
panic(err)
}
}
func DeleteDeployment(configPath string, deploymentName string) {
deploymentsClient := getDeploymentClient(configPath)
deletePolicy := metav1.DeletePropagationForeground
deploymentsClient.Delete(deploymentName, &metav1.DeleteOptions{
PropagationPolicy: &deletePolicy,
})
log.Info("[-] Deployment deleted deleted")
}
func getDeploymentClient(configPath string) typedv1.DeploymentInterface {
config, err := clientcmd.BuildConfigFromFlags("", configPath)
if err != nil {
panic(err)
}
clientset, err := kubernetes.NewForConfig(config)
if err != nil {
panic(err)
}
deploymentsClient := clientset.AppsV1().Deployments(apiv1.NamespaceDefault)
return deploymentsClient
}
func getDeployment(name string, image string, replicas int32) appsv1.Deployment {
deployment := appsv1.Deployment{
ObjectMeta: metav1.ObjectMeta{
Name: name,
},
Spec: appsv1.DeploymentSpec{
Replicas: int32Ptr(replicas),
Selector: &metav1.LabelSelector{
MatchLabels: map[string]string{
"app": "demo",
},
},
Template: apiv1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
"app": "demo",
},
},
Spec: apiv1.PodSpec{
Containers: []apiv1.Container{
{
Name: "web",
Image: image,
Ports: []apiv1.ContainerPort{
{
Name: "http",
Protocol: apiv1.ProtocolTCP,
ContainerPort: 80,
},
},
},
},
},
},
},
}
return deployment
}
func int32Ptr(i int32) *int32 { return &i }