forked from operator-framework/operator-sdk
/
manager_factory.go
105 lines (90 loc) · 3.25 KB
/
manager_factory.go
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// Copyright 2018 The Operator-SDK Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package release
import (
"fmt"
"strings"
"github.com/martinlindhe/base36"
"github.com/pborman/uuid"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
apitypes "k8s.io/apimachinery/pkg/types"
clientset "k8s.io/client-go/kubernetes"
helmengine "k8s.io/helm/pkg/engine"
"k8s.io/helm/pkg/kube"
"k8s.io/helm/pkg/storage"
"k8s.io/helm/pkg/tiller"
"k8s.io/helm/pkg/tiller/environment"
"github.com/operator-framework/operator-sdk/pkg/helm/engine"
"github.com/operator-framework/operator-sdk/pkg/helm/internal/types"
)
// ManagerFactory creates Managers that are specific to custom resources. It is
// used by the HelmOperatorReconciler during resource reconciliation, and it
// improves decoupling between reconciliation logic and the Helm backend
// components used to manage releases.
type ManagerFactory interface {
NewManager(r *unstructured.Unstructured) Manager
}
type managerFactory struct {
storageBackend *storage.Storage
tillerKubeClient *kube.Client
chartDir string
}
func (f managerFactory) NewManager(r *unstructured.Unstructured) Manager {
return f.newManagerForCR(r)
}
func (f managerFactory) newManagerForCR(r *unstructured.Unstructured) Manager {
return &manager{
storageBackend: f.storageBackend,
tillerKubeClient: f.tillerKubeClient,
chartDir: f.chartDir,
tiller: f.tillerRendererForCR(r),
releaseName: getReleaseName(r),
namespace: r.GetNamespace(),
spec: r.Object["spec"],
status: types.StatusFor(r),
}
}
// tillerRendererForCR creates a ReleaseServer configured with a rendering engine that adds ownerrefs to rendered assets
// based on the CR.
func (f managerFactory) tillerRendererForCR(r *unstructured.Unstructured) *tiller.ReleaseServer {
controllerRef := metav1.NewControllerRef(r, r.GroupVersionKind())
ownerRefs := []metav1.OwnerReference{
*controllerRef,
}
baseEngine := helmengine.New()
e := engine.NewOwnerRefEngine(baseEngine, ownerRefs)
var ey environment.EngineYard = map[string]environment.Engine{
environment.GoTplEngine: e,
}
env := &environment.Environment{
EngineYard: ey,
Releases: f.storageBackend,
KubeClient: f.tillerKubeClient,
}
kubeconfig, _ := f.tillerKubeClient.ToRESTConfig()
cs := clientset.NewForConfigOrDie(kubeconfig)
return tiller.NewReleaseServer(env, cs, false)
}
func getReleaseName(r *unstructured.Unstructured) string {
return fmt.Sprintf("%s-%s", r.GetName(), shortenUID(r.GetUID()))
}
func shortenUID(uid apitypes.UID) string {
u := uuid.Parse(string(uid))
uidBytes, err := u.MarshalBinary()
if err != nil {
return strings.Replace(string(uid), "-", "", -1)
}
return strings.ToLower(base36.EncodeBytes(uidBytes))
}