/
upgrade.go
50 lines (38 loc) · 1.49 KB
/
upgrade.go
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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
package kubernetes
import (
"fmt"
"github.com/coreos/go-semver/semver"
appsv1 "k8s.io/api/apps/v1"
)
const (
namespace = "kube-system"
checkpointerAnnotation = "checkpointer.alpha.coreos.com/checkpoint"
checkpointedPodAnnotation = "checkpointer.alpha.coreos.com/checkpoint-of"
kubeAPIServer = "kube-apiserver"
kubeControllerManager = "kube-controller-manager"
kubeScheduler = "kube-scheduler"
kubeProxy = "kube-proxy"
)
// UpgradeOptions represents Kubernetes control plane upgrade settings.
type UpgradeOptions struct {
FromVersion string
ToVersion string
ControlPlaneEndpoint string
extraUpdaters []daemonsetUpdater
podCheckpointerExtraUpdaters []daemonsetUpdater
masterNodes []string
}
// Path returns upgrade path in a form "FromMajor.FromMinor->ToMajor.ToMinor" (e.g. "1.20->1.21"),
// or empty string, if one or both versions can't be parsed.
func (options *UpgradeOptions) Path() string {
from, fromErr := semver.NewVersion(options.FromVersion)
to, toErr := semver.NewVersion(options.ToVersion)
if fromErr != nil || toErr != nil {
return ""
}
return fmt.Sprintf("%d.%d->%d.%d", from.Major, from.Minor, to.Major, to.Minor)
}
type daemonsetUpdater func(ds string, daemonset *appsv1.DaemonSet) error