mirror of
https://github.com/ceph/ceph-csi.git
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71 lines
2.4 KiB
Go
71 lines
2.4 KiB
Go
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/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package kubeletconfig
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import (
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"fmt"
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apiv1 "k8s.io/api/core/v1"
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"k8s.io/kubernetes/pkg/kubelet/apis/kubeletconfig"
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"k8s.io/kubernetes/pkg/kubelet/apis/kubeletconfig/validation"
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"k8s.io/kubernetes/pkg/kubelet/kubeletconfig/status"
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utillog "k8s.io/kubernetes/pkg/kubelet/kubeletconfig/util/log"
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)
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// lkgRollback returns a valid last-known-good configuration, and updates the `cc.configOK` condition
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// regarding the `reason` for the rollback, or returns an error if a valid last-known-good could not be produced
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func (cc *Controller) lkgRollback(reason, detail string) (*kubeletconfig.KubeletConfiguration, error) {
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utillog.Errorf(fmt.Sprintf("%s, %s", reason, detail))
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lkgUID := ""
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if lkgSource, err := cc.checkpointStore.LastKnownGood(); err != nil {
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return nil, fmt.Errorf("unable to determine last-known-good config, error: %v", err)
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} else if lkgSource != nil {
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lkgUID = lkgSource.UID()
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}
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// if lkgUID indicates the default should be used, return initConfig or defaultConfig
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if len(lkgUID) == 0 {
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if cc.initConfig != nil {
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cc.configOK.Set(status.LkgInitMessage, reason, apiv1.ConditionFalse)
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return cc.initConfig, nil
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}
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cc.configOK.Set(status.LkgDefaultMessage, reason, apiv1.ConditionFalse)
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return cc.defaultConfig, nil
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}
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// load
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checkpoint, err := cc.checkpointStore.Load(lkgUID)
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if err != nil {
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return nil, fmt.Errorf("%s, error: %v", fmt.Sprintf(status.LkgFailLoadReasonFmt, lkgUID), err)
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}
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// parse
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lkg, err := checkpoint.Parse()
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if err != nil {
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return nil, fmt.Errorf("%s, error: %v", fmt.Sprintf(status.LkgFailParseReasonFmt, lkgUID), err)
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}
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// validate
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if err := validation.ValidateKubeletConfiguration(lkg); err != nil {
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return nil, fmt.Errorf("%s, error: %v", fmt.Sprintf(status.LkgFailValidateReasonFmt, lkgUID), err)
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}
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cc.configOK.Set(fmt.Sprintf(status.LkgRemoteMessageFmt, lkgUID), reason, apiv1.ConditionFalse)
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return lkg, nil
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}
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