/
poolutil.go
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/
poolutil.go
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/**
* Copyright contributors to the ibm-storage-odf-operator project
*
* 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 util
import (
"context"
"encoding/json"
"fmt"
"github.com/IBM/ibm-storage-odf-operator/api/v1alpha1"
"github.com/go-logr/logr"
"io"
corev1 "k8s.io/api/core/v1"
storagev1 "k8s.io/api/storage/v1"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"os"
"path/filepath"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/event"
"sigs.k8s.io/controller-runtime/pkg/predicate"
"strings"
)
const (
PoolConfigmapName = "ibm-flashsystem-pools"
PoolsKey = "pools"
FSCConfigmapMountPath = "/config"
TopologySecretDataKey = "config"
TopologyStorageClassByMgmtId = "by_management_id"
PVMgmtAddrKey = "array_address"
CsiIBMBlockDriver = "block.csi.ibm.com"
CsiIBMBlockScPool = "pool"
PersistentVolumeClaimKind = "PersistentVolumeClaim"
DefaultSecretNameKey = "csi.storage.k8s.io/secret-name" // #nosec G101 - false positive
DefaultSecretNamespaceKey = "csi.storage.k8s.io/secret-namespace" // #nosec G101 - false positive
ProvisionerSecretNameKey = "csi.storage.k8s.io/provisioner-secret-name" // #nosec G101 - false positive
ProvisionerSecretNamespaceKey = "csi.storage.k8s.io/provisioner-secret-namespace" // #nosec G101 - false positive
SecretManagementAddressKey = "management_address" // #nosec G101 - false positive
)
type FSCMatchNotFoundError struct{}
func (m *FSCMatchNotFoundError) Error() string {
return "no matching FlashSystemCluster found"
}
type UniqueFSCMatchError struct{}
func (m *UniqueFSCMatchError) Error() string {
return "cannot find unique FlashSystemCluster"
}
type FlashSystemClusterMapContent struct {
ScPoolMap map[string]string `json:"storageclass"`
Secret string `json:"secret"`
}
type FSCConfigMapData struct {
FlashSystemClusterMap map[string]FlashSystemClusterMapContent
}
var IgnoreUpdateAndGenericPredicate = predicate.Funcs{
CreateFunc: func(e event.CreateEvent) bool {
return true
},
DeleteFunc: func(e event.DeleteEvent) bool {
return true
},
UpdateFunc: func(e event.UpdateEvent) bool {
return false
},
GenericFunc: func(e event.GenericEvent) bool {
return false
},
}
var SecretMgmtAddrPredicate = predicate.Funcs{
CreateFunc: func(e event.CreateEvent) bool {
secret, ok := e.Object.(*corev1.Secret)
if !ok {
return false
}
_, isTopology := secret.Data[TopologySecretDataKey]
if isTopology {
return isTopologySecretHasMgmtAddr(secret)
}
_, exist := secret.Data[SecretManagementAddressKey]
return exist
},
DeleteFunc: func(e event.DeleteEvent) bool {
secret, ok := e.Object.(*corev1.Secret)
if !ok {
return false
}
_, isTopology := secret.Data[TopologySecretDataKey]
if isTopology {
return isTopologySecretHasMgmtAddr(secret)
}
_, exist := secret.Data[SecretManagementAddressKey]
return exist
},
UpdateFunc: func(e event.UpdateEvent) bool {
oldSecret, ok := e.ObjectOld.(*corev1.Secret)
newSecret := e.ObjectNew.(*corev1.Secret)
if !ok {
return false
}
_, isTopology := oldSecret.Data[TopologySecretDataKey]
if isTopology {
return isTopologySecretUpdated(oldSecret, newSecret)
}
oldMgmtAddr, exist1 := oldSecret.Data[SecretManagementAddressKey]
newMgmtAddr, exist2 := newSecret.Data[SecretManagementAddressKey]
return exist1 && exist2 && (string(oldMgmtAddr) != string(newMgmtAddr))
},
GenericFunc: func(e event.GenericEvent) bool {
return false
},
}
func isTopologySecretHasMgmtAddr(secret *corev1.Secret) bool {
secretMgmtDataByMgmtId := make(map[string]map[string]string)
err := json.Unmarshal(secret.Data[TopologySecretDataKey], &secretMgmtDataByMgmtId)
if err != nil {
return false
}
for _, mgmtData := range secretMgmtDataByMgmtId {
if _, ok := mgmtData[SecretManagementAddressKey]; !ok {
return false
}
}
return true
}
func isTopologySecretUpdated(oldSecret *corev1.Secret, newSecret *corev1.Secret) bool {
oldSecretMgmtDataByMgmtId := make(map[string]map[string]string)
err := json.Unmarshal(oldSecret.Data[TopologySecretDataKey], &oldSecretMgmtDataByMgmtId)
if err != nil {
return false
}
newSecretMgmtDataByMgmtId := make(map[string]map[string]string)
err = json.Unmarshal(newSecret.Data[TopologySecretDataKey], &newSecretMgmtDataByMgmtId)
if err != nil {
return false
}
for mgmtId := range oldSecretMgmtDataByMgmtId {
if _, exist := newSecretMgmtDataByMgmtId[mgmtId]; !exist {
return true
}
oldSecretMgmtAddr := oldSecretMgmtDataByMgmtId[mgmtId][SecretManagementAddressKey]
newSecretMgmtAddr := newSecretMgmtDataByMgmtId[mgmtId][SecretManagementAddressKey]
if oldSecretMgmtAddr != newSecretMgmtAddr {
return true
}
}
return false
}
var RunDeletePredicate = predicate.Funcs{
CreateFunc: func(e event.CreateEvent) bool {
return false
},
DeleteFunc: func(e event.DeleteEvent) bool {
return true
},
UpdateFunc: func(e event.UpdateEvent) bool {
return false
},
GenericFunc: func(e event.GenericEvent) bool {
return false
},
}
func ReadPoolConfigMapFile() (map[string]FlashSystemClusterMapContent, error) {
var flashSystemClustersMap = make(map[string]FlashSystemClusterMapContent)
var flashSystemClusterContent FlashSystemClusterMapContent
fscPath := FSCConfigmapMountPath + "/"
files, err := os.ReadDir(fscPath)
if err != nil {
return nil, err
}
for _, file := range files {
if !file.IsDir() && !strings.HasPrefix(file.Name(), ".") {
flashSystemClusterContent, err = getFileContent(filepath.Join(fscPath, file.Name()))
if err != nil {
return flashSystemClustersMap, err
} else {
flashSystemClustersMap[file.Name()] = flashSystemClusterContent
}
}
}
return flashSystemClustersMap, nil
}
func getFileContent(filePath string) (FlashSystemClusterMapContent, error) {
var fscContent FlashSystemClusterMapContent
fileReader, err := os.Open(filePath)
if err != nil {
return fscContent, err
}
fileContent, _ := io.ReadAll(fileReader)
err = json.Unmarshal(fileContent, &fscContent)
return fscContent, err
}
func GetCreateConfigmap(client client.Client, log logr.Logger, ns string, createIfMissing bool) (*corev1.ConfigMap, error) {
configMap := &corev1.ConfigMap{}
err := client.Get(
context.Background(),
types.NamespacedName{Namespace: ns, Name: PoolConfigmapName},
configMap)
if err != nil {
if errors.IsNotFound(err) && createIfMissing {
configMap = initScPoolConfigMap(ns)
configMap.Data = make(map[string]string)
log.Info("creating pools ConfigMap", "ConfigMap", PoolConfigmapName)
err = client.Create(context.Background(), configMap)
if err != nil {
log.Error(err, "failed to create pools ConfigMap", "ConfigMap", PoolConfigmapName)
return nil, err
}
} else {
log.Error(err, "failed to get pools ConfigMap", "ConfigMap", PoolConfigmapName)
return nil, err
}
}
return configMap, err
}
func initScPoolConfigMap(ns string) *corev1.ConfigMap {
selectLabels := GetLabels()
scPoolConfigMap := &corev1.ConfigMap{
ObjectMeta: metav1.ObjectMeta{
Name: PoolConfigmapName,
Namespace: ns,
Labels: selectLabels,
},
}
return scPoolConfigMap
}
func MapClustersByMgmtAddress(client client.Client, logger logr.Logger) (map[string]v1alpha1.FlashSystemCluster, error) {
clusters := &v1alpha1.FlashSystemClusterList{}
if err := client.List(context.Background(), clusters); err != nil {
logger.Error(nil, "failed to list FlashSystemClusters")
return nil, err
}
clustersMapByMgmtAddr := make(map[string]v1alpha1.FlashSystemCluster)
for _, cluster := range clusters.Items {
clusterSecret := &corev1.Secret{}
err := client.Get(context.Background(),
types.NamespacedName{
Namespace: cluster.Spec.Secret.Namespace,
Name: cluster.Spec.Secret.Name},
clusterSecret)
if err != nil {
logger.Error(nil, "failed to get FlashSystemCluster secret")
return nil, err
}
clusterSecretManagementAddress := clusterSecret.Data[SecretManagementAddressKey]
clustersMapByMgmtAddr[string(clusterSecretManagementAddress)] = cluster
}
return clustersMapByMgmtAddr, nil
}
func GetStorageClassSecretNamespacedName(sc *storagev1.StorageClass) (string, string, error) {
secretName, secretNamespace := sc.Parameters[DefaultSecretNameKey], sc.Parameters[DefaultSecretNamespaceKey]
if secretName == "" || secretNamespace == "" {
secretName, secretNamespace = sc.Parameters[ProvisionerSecretNameKey], sc.Parameters[ProvisionerSecretNamespaceKey]
if secretName == "" || secretNamespace == "" {
return "", "", fmt.Errorf("failed to find secret name or namespace in StorageClass")
}
}
return secretName, secretNamespace, nil
}
func GetStorageClassSecret(client client.Client, sc *storagev1.StorageClass) (corev1.Secret, error) {
secret := &corev1.Secret{}
secretName, secretNamespace, err := GetStorageClassSecretNamespacedName(sc)
if err != nil {
return *secret, err
}
err = client.Get(context.Background(),
types.NamespacedName{Namespace: secretNamespace, Name: secretName},
secret)
return *secret, err
}