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kube-arangodb/pkg/deployment/reconcile/action_pvc_resize.go
2023-09-15 13:46:38 +02:00

157 lines
4.5 KiB
Go

//
// DISCLAIMER
//
// Copyright 2016-2023 ArangoDB GmbH, Cologne, Germany
//
// 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.
//
// Copyright holder is ArangoDB GmbH, Cologne, Germany
//
package reconcile
import (
"context"
"fmt"
"github.com/spf13/cobra"
core "k8s.io/api/core/v1"
meta "k8s.io/apimachinery/pkg/apis/meta/v1"
api "github.com/arangodb/kube-arangodb/pkg/apis/deployment/v1"
"github.com/arangodb/kube-arangodb/pkg/util/errors"
"github.com/arangodb/kube-arangodb/pkg/util/globals"
"github.com/arangodb/kube-arangodb/pkg/util/k8sutil"
)
type ActionPVCResizeConfig struct {
Concurrency int
}
func (a *ActionPVCResizeConfig) Init(cmd *cobra.Command, section string) error {
f := cmd.Flags()
f.IntVar(&a.Concurrency, fmt.Sprintf("%s.concurrency", section), 32, "Define limit of concurrent PVC Resizes on the cluster")
return nil
}
// newRotateMemberAction creates a new Action that implements the given
// planned RotateMember action.
func newPVCResizeAction(action api.Action, actionCtx ActionContext) Action {
a := &actionPVCResize{}
a.actionImpl = newActionImplDefRef(action, actionCtx)
return a
}
// actionRotateMember implements an RotateMember.
type actionPVCResize struct {
// actionImpl implement timeout and member id functions
actionImpl
}
// Start performs the start of the action.
// Returns true if the action is completely finished, false in case
// the start time needs to be recorded and a ready condition needs to be checked.
func (a *actionPVCResize) Start(ctx context.Context) (bool, error) {
group := a.action.Group
groupSpec := a.actionCtx.GetSpec().GetServerGroupSpec(group)
m, ok := a.actionCtx.GetMemberStatusByID(a.action.MemberID)
if !ok {
a.log.Error("No such member")
return true, nil
}
cache, ok := a.actionCtx.ACS().ClusterCache(m.ClusterID)
if !ok {
return true, errors.Newf("Cluster is not ready")
}
if m.PersistentVolumeClaim.GetName() == "" {
// Nothing to do, PVC is empty
return true, nil
}
pvc, ok := cache.PersistentVolumeClaim().V1().GetSimple(m.PersistentVolumeClaim.GetName())
if !ok {
return true, nil
}
am := cache.ArangoMember().V1().GetSimpleOptional(m.ArangoMemberName(a.actionCtx.GetName(), group))
var res core.ResourceList
if am.Spec.Overrides.HasVolumeClaimTemplate(&groupSpec) {
res = am.Spec.Overrides.GetVolumeClaimTemplate(&groupSpec).Spec.Resources.Requests
} else {
res = am.Spec.Overrides.GetResources(&groupSpec).Requests
}
if requestedSize, ok := res[core.ResourceStorage]; ok {
if volumeSize, ok := pvc.Spec.Resources.Requests[core.ResourceStorage]; ok {
cmp := volumeSize.Cmp(requestedSize)
if cmp < 0 {
pvc.Spec.Resources.Requests[core.ResourceStorage] = requestedSize
nctx, c := globals.GetGlobals().Timeouts().Kubernetes().WithTimeout(ctx)
defer c()
if _, err := cache.Client().Kubernetes().CoreV1().PersistentVolumeClaims(cache.Namespace()).Update(nctx, pvc, meta.UpdateOptions{}); err != nil {
return false, err
}
return false, nil
}
}
}
return true, nil
}
// CheckProgress checks the progress of the action.
// Returns: ready, abort, error.
func (a *actionPVCResize) CheckProgress(ctx context.Context) (bool, bool, error) {
// Check that pod is removed
m, found := a.actionCtx.GetMemberStatusByID(a.action.MemberID)
if !found {
a.log.Error("No such member")
return true, false, nil
}
cache, ok := a.actionCtx.ACS().ClusterCache(m.ClusterID)
if !ok {
a.log.Warn("Cluster is not ready")
return false, false, nil
}
pvc, ok := cache.PersistentVolumeClaim().V1().GetSimple(m.PersistentVolumeClaim.GetName())
if !ok {
return true, false, nil
}
// If we are pending for FS to be resized - we need to proceed with mounting of PVC
if k8sutil.IsPersistentVolumeClaimFileSystemResizePending(pvc) {
return true, false, nil
}
if requestedSize, ok := pvc.Spec.Resources.Requests[core.ResourceStorage]; ok {
if volumeSize, ok := pvc.Status.Capacity[core.ResourceStorage]; ok {
cmp := volumeSize.Cmp(requestedSize)
if cmp >= 0 {
return true, false, nil
}
}
}
return false, false, nil
}