app_admin_secret.go

/*
Copyright 2020,2021 Avi Zimmerman

This file is part of kvdi.

kvdi is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

kvdi is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with kvdi.  If not, see <https://www.gnu.org/licenses/>.
*/

package app

import (
	"context"

	appv1 "github.com/kvdi/kvdi/apis/app/v1"
	"github.com/kvdi/kvdi/pkg/util/common"
	"github.com/kvdi/kvdi/pkg/util/errors"

	"github.com/go-logr/logr"
	corev1 "k8s.io/api/core/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/types"
	"sigs.k8s.io/controller-runtime/pkg/client"
)

const passwordKey = "password"

func (r *Reconciler) reconcileAdminSecret(reqLogger logr.Logger, cluster *appv1.VDICluster) (password string, err error) {
	nn := types.NamespacedName{Name: cluster.GetAdminSecret(), Namespace: cluster.GetCoreNamespace()}
	found := &corev1.Secret{}
	if err := r.client.Get(context.TODO(), nn, found); err != nil {
		if client.IgnoreNotFound(err) != nil {
			return "", err
		}
		// We are generating a password
		reqLogger.Info("Generating password and creating new admin secret", "Secret.Name", nn.Name, "Secret.Namespace", nn.Namespace)
		passw, err := common.GeneratePassword(16)
		if err != nil {
			return "", err
		}
		secret := &corev1.Secret{
			ObjectMeta: metav1.ObjectMeta{
				Name:            nn.Name,
				Namespace:       nn.Namespace,
				Labels:          cluster.GetComponentLabels("admin-secret"),
				OwnerReferences: cluster.OwnerReferences(),
			},
			Data: map[string][]byte{
				passwordKey: []byte(passw),
			},
		}
		if err := r.client.Create(context.TODO(), secret); err != nil {
			return "", err
		}
		return passw, nil
	}
	existingPassw, ok := found.Data[passwordKey]
	if !ok {
		// delete the secret and requeue, currently migration depends on the admin
		// password - but long-term this is probably not a good idea
		if err := r.client.Delete(context.TODO(), found); err != nil {
			return "", err
		}
		return "", errors.NewRequeueError("Regenerating admin secret", 3)
	}
	return string(existingPassw), nil
}