/
resource.go
178 lines (149 loc) · 4.68 KB
/
resource.go
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package apps
import (
"context"
"fmt"
appv1alpha1 "github.com/giantswarm/apiextensions-application/api/v1alpha1"
corev1alpha1 "github.com/giantswarm/config-controller/api/v1alpha1"
"github.com/giantswarm/k8sclient/v6/pkg/k8sclient"
"github.com/giantswarm/microerror"
"github.com/giantswarm/micrologger"
apierrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/labels"
"sigs.k8s.io/controller-runtime/pkg/client"
releasev1alpha1 "github.com/giantswarm/release-operator/v2/api/v1alpha1"
"github.com/giantswarm/release-operator/v2/pkg/project"
"github.com/giantswarm/release-operator/v2/service/controller/key"
)
const (
Name = "apps"
)
type Config struct {
K8sClient k8sclient.Interface
Logger micrologger.Logger
}
type Resource struct {
k8sClient k8sclient.Interface
logger micrologger.Logger
}
func New(config Config) (*Resource, error) {
if config.K8sClient == nil {
return nil, microerror.Maskf(invalidConfigError, "%T.K8sClient must not be empty", config)
}
if config.Logger == nil {
return nil, microerror.Maskf(invalidConfigError, "%T.Logger must not be empty", config)
}
r := &Resource{
k8sClient: config.K8sClient,
logger: config.Logger,
}
return r, nil
}
func (r *Resource) Name() string {
return Name
}
func (r *Resource) ensureState(ctx context.Context) error {
var releases releasev1alpha1.ReleaseList
{
err := r.k8sClient.CtrlClient().List(
ctx,
&releases,
)
if err != nil {
return microerror.Mask(err)
}
releases = key.ExcludeDeletedRelease(releases)
releases = key.ExcludeUnusedDeprecatedReleases(releases)
}
var components map[string]releasev1alpha1.ReleaseSpecComponent
{
components = key.ExtractComponents(releases)
}
var apps appv1alpha1.AppList
{
err := r.k8sClient.CtrlClient().List(
ctx,
&apps,
&client.ListOptions{
LabelSelector: labels.SelectorFromSet(labels.Set{
key.LabelManagedBy: project.Name(),
}),
},
)
if err != nil {
return microerror.Mask(err)
}
}
var configs corev1alpha1.ConfigList
{
err := r.k8sClient.CtrlClient().List(
ctx,
&configs,
&client.ListOptions{
LabelSelector: labels.SelectorFromSet(labels.Set{
key.LabelManagedBy: project.Name(),
}),
},
)
if err != nil {
return microerror.Mask(err)
}
}
appsToDelete := calculateObsoleteApps(components, apps)
for i, app := range appsToDelete.Items {
r.logger.LogCtx(ctx, "level", "debug", "message", fmt.Sprintf("deleting app %#q in namespace %#q", app.Name, app.Namespace))
err := r.k8sClient.CtrlClient().Delete(
ctx,
&appsToDelete.Items[i],
)
if apierrors.IsNotFound(err) {
// fall through.
} else if err != nil {
return microerror.Mask(err)
}
r.logger.LogCtx(ctx, "level", "debug", "message", fmt.Sprintf("deleted app %#q in namespace %#q", app.Name, app.Namespace))
}
appsToCreate := calculateMissingApps(components, apps)
for i, app := range appsToCreate.Items {
appConfig := key.GetAppConfig(app, configs)
if appConfig.ConfigMapRef.Name == "" && appConfig.SecretRef.Name == "" {
// Skip this app
r.logger.LogCtx(ctx, "level", "debug", "message", fmt.Sprintf("skipping app %#q as its config is not ready", app.Name))
continue
}
appsToCreate.Items[i].Spec.Config.ConfigMap.Name = appConfig.ConfigMapRef.Name
appsToCreate.Items[i].Spec.Config.ConfigMap.Namespace = appConfig.ConfigMapRef.Namespace
appsToCreate.Items[i].Spec.Config.Secret.Name = appConfig.SecretRef.Name
appsToCreate.Items[i].Spec.Config.Secret.Namespace = appConfig.SecretRef.Namespace
r.logger.LogCtx(ctx, "level", "debug", "message", fmt.Sprintf("creating app %#q in namespace %#q", app.Name, app.Namespace))
err := r.k8sClient.CtrlClient().Create(
ctx,
&appsToCreate.Items[i],
)
if apierrors.IsAlreadyExists(err) {
// fall through.
} else if err != nil {
return microerror.Mask(err)
}
r.logger.LogCtx(ctx, "level", "debug", "message", fmt.Sprintf("created app %#q in namespace %#q", app.Name, app.Namespace))
}
return nil
}
func calculateMissingApps(components map[string]releasev1alpha1.ReleaseSpecComponent, apps appv1alpha1.AppList) appv1alpha1.AppList {
var missingApps appv1alpha1.AppList
for _, component := range components {
if !key.ComponentAppCreated(component, apps.Items) {
missingApp := key.ConstructApp(component)
missingApps.Items = append(missingApps.Items, missingApp)
}
}
return missingApps
}
func calculateObsoleteApps(components map[string]releasev1alpha1.ReleaseSpecComponent, apps appv1alpha1.AppList) appv1alpha1.AppList {
var obsoleteApps appv1alpha1.AppList
for _, app := range apps.Items {
if !key.AppReferenced(app, components) {
obsoleteApps.Items = append(obsoleteApps.Items, app)
}
}
return obsoleteApps
}