mirror of
https://github.com/gravitational/teleport.git
synced 2026-11-04 02:21:02 +08:00
Hugo Shaka
54ede1e11c
* Move automaticupgrades packages in `lib/automaticupgrades` * Fix `kube-agent-udpater` Dockerfile
68 lines
2.2 KiB
Go
68 lines
2.2 KiB
Go
/*
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* Teleport
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* Copyright (C) 2023 Gravitational, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package version
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import (
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"context"
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"strings"
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"github.com/gravitational/trace"
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"golang.org/x/mod/semver"
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ctrllog "sigs.k8s.io/controller-runtime/pkg/log"
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)
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// Getter gets the target image version for an external source. It should cache
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// the result to reduce io and avoid potential rate-limits and is safe to call
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// multiple times over a short period.
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// If the version source intentionally returns no version, a NoNewVersionError is
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// returned.
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type Getter interface {
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GetVersion(context.Context) (string, error)
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}
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// ValidVersionChange receives the current version and the candidate next version
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// and evaluates if the version transition is valid.
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func ValidVersionChange(ctx context.Context, current, next string) bool {
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log := ctrllog.FromContext(ctx).V(1)
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// Cannot upgrade to a non-valid version
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if !semver.IsValid(next) {
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log.Error(trace.BadParameter("next version is not following semver"), "version change is invalid", "nextVersion", next)
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return false
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}
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switch semver.Compare(next, current) {
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// No need to upgrade if version is the same
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case 0:
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return false
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default:
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return true
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}
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}
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// EnsureSemver adds the 'v' prefix if needed and ensures the provided version
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// is semver-compliant.
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func EnsureSemver(current string) (string, error) {
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if !strings.HasPrefix(current, "v") {
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current = "v" + current
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}
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if !semver.IsValid(current) {
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return "", trace.BadParameter("tag %s is not following semver", current)
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}
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return current, nil
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}
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