/
finalizer.go
193 lines (174 loc) · 6.86 KB
/
finalizer.go
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package k8sutils
import (
"context"
"strconv"
redisv1beta2 "github.com/cafe24-dhkim05/redis-operator/api/v1beta2"
"github.com/go-logr/logr"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
)
const (
RedisFinalizer string = "redisFinalizer"
RedisClusterFinalizer string = "redisClusterFinalizer"
RedisReplicationFinalizer string = "redisReplicationFinalizer"
RedisSentinelFinalizer string = "redisSentinelFinalizer"
)
// finalizeLogger will generate logging interface
func finalizerLogger(namespace string, name string) logr.Logger {
reqLogger := log.WithValues("Request.Service.Namespace", namespace, "Request.Finalizer.Name", name)
return reqLogger
}
// HandleRedisFinalizer finalize resource if instance is marked to be deleted
func HandleRedisFinalizer(cr *redisv1beta2.Redis, cl client.Client) error {
logger := finalizerLogger(cr.Namespace, RedisFinalizer)
if cr.GetDeletionTimestamp() != nil {
if controllerutil.ContainsFinalizer(cr, RedisFinalizer) {
if err := finalizeRedisPVC(cr); err != nil {
return err
}
controllerutil.RemoveFinalizer(cr, RedisFinalizer)
if err := cl.Update(context.TODO(), cr); err != nil {
logger.Error(err, "Could not remove finalizer "+RedisFinalizer)
return err
}
}
}
return nil
}
// HandleRedisClusterFinalizer finalize resource if instance is marked to be deleted
func HandleRedisClusterFinalizer(cr *redisv1beta2.RedisCluster, cl client.Client) error {
logger := finalizerLogger(cr.Namespace, RedisClusterFinalizer)
if cr.GetDeletionTimestamp() != nil {
if controllerutil.ContainsFinalizer(cr, RedisClusterFinalizer) {
if err := finalizeRedisClusterPVC(cr); err != nil {
return err
}
controllerutil.RemoveFinalizer(cr, RedisClusterFinalizer)
if err := cl.Update(context.TODO(), cr); err != nil {
logger.Error(err, "Could not remove finalizer "+RedisClusterFinalizer)
return err
}
}
}
return nil
}
// Handle RedisReplicationFinalizer finalize resource if instance is marked to be deleted
func HandleRedisReplicationFinalizer(cr *redisv1beta2.RedisReplication, cl client.Client) error {
logger := finalizerLogger(cr.Namespace, RedisReplicationFinalizer)
if cr.GetDeletionTimestamp() != nil {
if controllerutil.ContainsFinalizer(cr, RedisReplicationFinalizer) {
if err := finalizeRedisReplicationPVC(cr); err != nil {
return err
}
controllerutil.RemoveFinalizer(cr, RedisReplicationFinalizer)
if err := cl.Update(context.TODO(), cr); err != nil {
logger.Error(err, "Could not remove finalizer "+RedisReplicationFinalizer)
return err
}
}
}
return nil
}
// HandleRedisSentinelFinalizer finalize resource if instance is marked to be deleted
func HandleRedisSentinelFinalizer(cr *redisv1beta2.RedisSentinel, cl client.Client) error {
logger := finalizerLogger(cr.Namespace, RedisSentinelFinalizer)
if cr.GetDeletionTimestamp() != nil {
if controllerutil.ContainsFinalizer(cr, RedisSentinelFinalizer) {
if err := finalizeRedisSentinelPVC(cr); err != nil {
return err
}
controllerutil.RemoveFinalizer(cr, RedisSentinelFinalizer)
if err := cl.Update(context.TODO(), cr); err != nil {
logger.Error(err, "Could not remove finalizer "+RedisSentinelFinalizer)
return err
}
}
}
return nil
}
// AddRedisFinalizer add finalizer for graceful deletion
func AddRedisFinalizer(cr *redisv1beta2.Redis, cl client.Client) error {
if !controllerutil.ContainsFinalizer(cr, RedisFinalizer) {
controllerutil.AddFinalizer(cr, RedisFinalizer)
return cl.Update(context.TODO(), cr)
}
return nil
}
// AddRedisClusterFinalizer add finalizer for graceful deletion
func AddRedisClusterFinalizer(cr *redisv1beta2.RedisCluster, cl client.Client) error {
if !controllerutil.ContainsFinalizer(cr, RedisClusterFinalizer) {
controllerutil.AddFinalizer(cr, RedisClusterFinalizer)
return cl.Update(context.TODO(), cr)
}
return nil
}
// AddRedisReplicationFinalizer add finalizer for graceful deletion
func AddRedisReplicationFinalizer(cr *redisv1beta2.RedisReplication, cl client.Client) error {
if !controllerutil.ContainsFinalizer(cr, RedisReplicationFinalizer) {
controllerutil.AddFinalizer(cr, RedisReplicationFinalizer)
return cl.Update(context.TODO(), cr)
}
return nil
}
// AddRedisSentinelFinalizer add finalizer for graceful deletion
func AddRedisSentinelFinalizer(cr *redisv1beta2.RedisSentinel, cl client.Client) error {
if !controllerutil.ContainsFinalizer(cr, RedisSentinelFinalizer) {
controllerutil.AddFinalizer(cr, RedisSentinelFinalizer)
return cl.Update(context.TODO(), cr)
}
return nil
}
// finalizeRedisPVC delete PVC
func finalizeRedisPVC(cr *redisv1beta2.Redis) error {
logger := finalizerLogger(cr.Namespace, RedisFinalizer)
PVCName := cr.Name + "-" + cr.Name + "-0"
err := generateK8sClient().CoreV1().PersistentVolumeClaims(cr.Namespace).Delete(context.TODO(), PVCName, metav1.DeleteOptions{})
if err != nil && !errors.IsNotFound(err) {
logger.Error(err, "Could not delete Persistent Volume Claim "+PVCName)
return err
}
return nil
}
// finalizeRedisClusterPVC delete PVCs
func finalizeRedisClusterPVC(cr *redisv1beta2.RedisCluster) error {
logger := finalizerLogger(cr.Namespace, RedisClusterFinalizer)
for _, role := range []string{"leader", "follower"} {
for i := 0; i < int(cr.Spec.GetReplicaCounts(role)); i++ {
PVCName := cr.Name + "-" + cr.Name + "-" + role + "-" + strconv.Itoa(i)
err := generateK8sClient().CoreV1().PersistentVolumeClaims(cr.Namespace).Delete(context.TODO(), PVCName, metav1.DeleteOptions{})
if err != nil && !errors.IsNotFound(err) {
logger.Error(err, "Could not delete Persistent Volume Claim "+PVCName)
return err
}
}
if cr.Spec.Storage.NodeConfVolume {
for i := 0; i < int(cr.Spec.GetReplicaCounts(role)); i++ {
PVCName := "node-conf" + cr.Name + "-" + role + "-" + strconv.Itoa(i)
err := generateK8sClient().CoreV1().PersistentVolumeClaims(cr.Namespace).Delete(context.TODO(), PVCName, metav1.DeleteOptions{})
if err != nil && !errors.IsNotFound(err) {
logger.Error(err, "Could not delete Persistent Volume Claim "+PVCName)
return err
}
}
}
}
return nil
}
// finalizeRedisReplicationPVC delete PVCs
func finalizeRedisReplicationPVC(cr *redisv1beta2.RedisReplication) error {
logger := finalizerLogger(cr.Namespace, RedisReplicationFinalizer)
for i := 0; i < int(cr.Spec.GetReplicationCounts("replication")); i++ {
PVCName := cr.Name + "-" + cr.Name + "-" + strconv.Itoa(i)
err := generateK8sClient().CoreV1().PersistentVolumeClaims(cr.Namespace).Delete(context.TODO(), PVCName, metav1.DeleteOptions{})
if err != nil && !errors.IsNotFound(err) {
logger.Error(err, "Could not delete Persistent Volume Claim "+PVCName)
return err
}
}
return nil
}
func finalizeRedisSentinelPVC(cr *redisv1beta2.RedisSentinel) error {
return nil
}