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singleton.go
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/
singleton.go
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/*
* singleton.go
*
* This source file is part of the FoundationDB open source project
*
* Copyright 2023 Apple Inc. and the FoundationDB project 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 fixtures
import (
chaosmesh "github.com/chaos-mesh/chaos-mesh/api/v1alpha1"
appsv1 "k8s.io/api/apps/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/client-go/kubernetes/scheme"
"math/rand"
"os/user"
"time"
fdbv1beta2 "github.com/FoundationDB/fdb-kubernetes-operator/api/v1beta2"
corev1 "k8s.io/api/core/v1"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest"
controllerRuntimeClient "sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/client/config"
)
type singleton struct {
options *FactoryOptions
userName string
certificate *corev1.Secret
config *rest.Config
client *kubernetes.Clientset
controllerRuntimeClient controllerRuntimeClient.Client
fdbVersion fdbv1beta2.Version
namespaces []string
}
func getSingleton(options *FactoryOptions) (*singleton, error) {
err := options.validateFlags()
if err != nil {
return nil, err
}
var userName string
if options.username == "" {
var u *user.User
u, err = user.Current()
if err != nil {
return nil, err
}
userName = u.Username
} else {
userName = options.username
}
rand.Seed(time.Now().UnixNano())
certificate, _ := GenerateCertificate()
if err != nil {
return nil, err
}
kubeConfig, err := config.GetConfigWithContext(options.context)
if err != nil {
return nil, err
}
client, err := kubernetes.NewForConfig(kubeConfig)
if err != nil {
return nil, err
}
fdbVersion, err := fdbv1beta2.ParseFdbVersion(options.fdbVersion)
if err != nil {
return nil, err
}
// Also add Apps v1 and Core v1 to allow to use the controller runtime client
// to modify Pods, Deployments etc.
curScheme := runtime.NewScheme()
err = scheme.AddToScheme(curScheme)
if err != nil {
return nil, err
}
err = appsv1.AddToScheme(curScheme)
if err != nil {
return nil, err
}
err = corev1.AddToScheme(curScheme)
if err != nil {
return nil, err
}
err = fdbv1beta2.AddToScheme(curScheme)
if err != nil {
return nil, err
}
err = chaosmesh.AddToScheme(curScheme)
if err != nil {
return nil, err
}
controllerClient, err := LoadControllerRuntimeFromContext(options.context, curScheme)
if err != nil {
return nil, err
}
return &singleton{
options: options,
userName: userName,
config: kubeConfig,
client: client,
fdbVersion: fdbVersion,
certificate: certificate,
controllerRuntimeClient: controllerClient,
}, nil
}