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deployment.go
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deployment.go
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package deployment
import (
"fmt"
"net/http"
"sort"
"k8s.io/api/apps/v1beta1"
"k8s.io/apimachinery/pkg/api/errors"
metaV1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/client-go/kubernetes"
"github.com/Qihoo360/wayne/src/backend/client"
erroresult "github.com/Qihoo360/wayne/src/backend/models/response/errors"
"github.com/Qihoo360/wayne/src/backend/resources/common"
"github.com/Qihoo360/wayne/src/backend/resources/event"
"github.com/Qihoo360/wayne/src/backend/resources/pod"
"github.com/Qihoo360/wayne/src/backend/util/maps"
)
type Deployment struct {
ObjectMeta common.ObjectMeta `json:"objectMeta"`
Pods common.PodInfo `json:"pods"`
Containers []string `json:"containers"`
}
func GetDeploymentList(indexer *client.CacheFactory, namespace string) ([]*v1beta1.Deployment, error) {
deployments, err := indexer.DeploymentLister().Deployments(namespace).List(labels.Everything())
if err != nil {
return nil, err
}
sort.Slice(deployments, func(i, j int) bool {
return deployments[i].Name > deployments[j].Name
})
return deployments, nil
}
func GetDeploymentResource(cli *kubernetes.Clientset, deployment *v1beta1.Deployment) (*common.ResourceList, error) {
old, err := cli.AppsV1beta1().Deployments(deployment.Namespace).Get(deployment.Name, metaV1.GetOptions{})
if err != nil {
if errors.IsNotFound(err) {
return common.DeploymentResourceList(deployment), nil
}
return nil, err
}
oldResourceList := common.DeploymentResourceList(old)
newResourceList := common.DeploymentResourceList(deployment)
return &common.ResourceList{
Cpu: newResourceList.Cpu - oldResourceList.Cpu,
Memory: newResourceList.Memory - oldResourceList.Memory,
}, nil
}
func CreateOrUpdateDeployment(cli *kubernetes.Clientset, deployment *v1beta1.Deployment) (*v1beta1.Deployment, error) {
old, err := cli.AppsV1beta1().Deployments(deployment.Namespace).Get(deployment.Name, metaV1.GetOptions{})
if err != nil {
if errors.IsNotFound(err) {
return cli.AppsV1beta1().Deployments(deployment.Namespace).Create(deployment)
}
return nil, err
}
err = checkDeploymentLabelSelector(deployment, old)
if err != nil {
return nil, err
}
old.Labels = deployment.Labels
old.Annotations = deployment.Annotations
old.Spec = deployment.Spec
return cli.AppsV1beta1().Deployments(deployment.Namespace).Update(old)
}
func UpdateDeployment(cli *kubernetes.Clientset, deployment *v1beta1.Deployment) (*v1beta1.Deployment, error) {
old, err := cli.AppsV1beta1().Deployments(deployment.Namespace).Get(deployment.Name, metaV1.GetOptions{})
if err != nil {
return nil, err
}
err = checkDeploymentLabelSelector(deployment, old)
if err != nil {
return nil, err
}
return cli.AppsV1beta1().Deployments(deployment.Namespace).Update(deployment)
}
// check Deployment .Spec.Selector.MatchLabels, prevent orphan ReplicaSet
// old deployment .Spec.Selector.MatchLabels labels should contain all new deployment .Spec.Selector.MatchLabels labels
// e.g. old Deployment .Spec.Selector.MatchLabels is app = infra-wayne,wayne-app = infra
// new Deployment .Spec.Selector.MatchLabels valid labels is
// app = infra-wayne or wayne-app = infra or app = infra-wayne,wayne-app = infra
func checkDeploymentLabelSelector(new *v1beta1.Deployment, old *v1beta1.Deployment) error {
for key, value := range new.Spec.Selector.MatchLabels {
oldValue, ok := old.Spec.Selector.MatchLabels[key]
if !ok || oldValue != value {
return &erroresult.ErrorResult{
Code: http.StatusBadRequest,
Msg: fmt.Sprintf("New's Deployment MatchLabels(%s) not match old MatchLabels(%s), do not allow deploy to prevent the orphan ReplicaSet. ",
maps.LabelsToString(new.Spec.Selector.MatchLabels), maps.LabelsToString(old.Spec.Selector.MatchLabels)),
}
}
}
return nil
}
func GetDeployment(cli *kubernetes.Clientset, name, namespace string) (*v1beta1.Deployment, error) {
return cli.AppsV1beta1().Deployments(namespace).Get(name, metaV1.GetOptions{})
}
func GetDeploymentDetail(cli *kubernetes.Clientset, indexer *client.CacheFactory, name, namespace string) (*Deployment, error) {
deployment, err := cli.AppsV1beta1().Deployments(namespace).Get(name, metaV1.GetOptions{})
if err != nil {
return nil, err
}
return toDeployment(deployment, indexer)
}
func toDeployment(deployment *v1beta1.Deployment, indexer *client.CacheFactory) (*Deployment, error) {
result := &Deployment{
ObjectMeta: common.NewObjectMeta(deployment.ObjectMeta),
}
podInfo := common.PodInfo{}
podInfo.Current = deployment.Status.AvailableReplicas
podInfo.Desired = *deployment.Spec.Replicas
var err error
pods, err := pod.ListKubePod(indexer, deployment.Namespace, deployment.Spec.Template.Labels)
if err != nil {
return nil, err
}
podInfo.Warnings, err = event.GetPodsWarningEvents(indexer, pods)
if err != nil {
return nil, err
}
result.Pods = podInfo
containers := make([]string, 0)
for _, container := range deployment.Spec.Template.Spec.Containers {
containers = append(containers, container.Image)
}
result.Containers = containers
return result, nil
}
func DeleteDeployment(cli *kubernetes.Clientset, name, namespace string) error {
deletionPropagation := metaV1.DeletePropagationBackground
return cli.ExtensionsV1beta1().
Deployments(namespace).
Delete(name, &metaV1.DeleteOptions{PropagationPolicy: &deletionPropagation})
}