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upgradeimpl.go
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upgradeimpl.go
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package deployer
import (
"context"
"fmt"
"reflect"
loggingconfig "github.com/rancher/rancher/pkg/controllers/user/logging/config"
"github.com/rancher/rancher/pkg/controllers/user/systemimage"
"github.com/rancher/rancher/pkg/project"
appsv1beta2 "github.com/rancher/types/apis/apps/v1beta2"
"github.com/rancher/types/apis/management.cattle.io/v3"
"github.com/rancher/types/config"
"github.com/pkg/errors"
"github.com/rancher/rancher/pkg/namespace"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
)
var (
serviceName = "logging"
)
type loggingService struct {
clusterName string
projectLister v3.ProjectLister
templateLister v3.CatalogTemplateLister
daemonsets appsv1beta2.DaemonSetInterface
appDeployer *AppDeployer
}
func init() {
systemimage.RegisterSystemService(serviceName, &loggingService{})
}
func (l *loggingService) Init(ctx context.Context, cluster *config.UserContext) {
ad := &AppDeployer{
AppsGetter: cluster.Management.Project,
Namespaces: cluster.Core.Namespaces(metav1.NamespaceAll),
}
l.clusterName = cluster.ClusterName
l.projectLister = cluster.Management.Management.Projects(metav1.NamespaceAll).Controller().Lister()
l.templateLister = cluster.Management.Management.CatalogTemplates(metav1.NamespaceAll).Controller().Lister()
l.daemonsets = cluster.Apps.DaemonSets(metav1.NamespaceAll)
l.appDeployer = ad
}
func (l *loggingService) Version() (string, error) {
return loggingconfig.AppInitVersion, nil
}
func (l *loggingService) Upgrade(currentVersion string) (string, error) {
appName := loggingconfig.AppName
templateID := loggingconfig.RancherLoggingTemplateID()
template, err := l.templateLister.Get(namespace.GlobalNamespace, templateID)
if err != nil {
return "", errors.Wrapf(err, "get template %s failed", templateID)
}
newFullVersion := fmt.Sprintf("%s-%s", templateID, template.Spec.DefaultVersion)
if currentVersion == newFullVersion {
return currentVersion, nil
}
newVersion := template.Spec.DefaultVersion
//clean old version
if err = l.daemonsets.Delete(loggingconfig.FluentdName, &metav1.DeleteOptions{}); !apierrors.IsNotFound(err) {
return "", nil
}
if err = l.daemonsets.Delete(loggingconfig.LogAggregatorName, &metav1.DeleteOptions{}); !apierrors.IsNotFound(err) {
return "", nil
}
//upgrade old app
newCatalogID := loggingconfig.RancherLoggingCatalogID(newVersion)
defaultSystemProjects, err := l.projectLister.List(metav1.NamespaceAll, labels.Set(project.SystemProjectLabel).AsSelector())
if err != nil {
return "", errors.Wrap(err, "list system project failed")
}
if len(defaultSystemProjects) == 0 {
return "", errors.New("get system project failed")
}
systemProject := defaultSystemProjects[0]
if systemProject == nil {
return "", errors.New("get system project failed")
}
app, err := l.appDeployer.AppsGetter.Apps(metav1.NamespaceAll).GetNamespaced(systemProject.Name, appName, metav1.GetOptions{})
if err != nil {
if apierrors.IsNotFound(err) {
return newVersion, nil
}
return "", errors.Wrapf(err, "get app %s:%s failed", systemProject.Name, appName)
}
newApp := app.DeepCopy()
newApp.Spec.ExternalID = newCatalogID
if !reflect.DeepEqual(newApp, app) {
if _, err = l.appDeployer.AppsGetter.Apps(metav1.NamespaceAll).Update(newApp); err != nil {
return "", errors.Wrapf(err, "update app %s:%s failed", app.Namespace, app.Name)
}
}
return newVersion, nil
}