mirror of
https://github.com/gravitational/teleport.git
synced 2026-10-25 18:59:51 +08:00
Hugo Shaka
c20095e9d6
* Convert autoupdate version handling to coreos/go-semver * get the right version in installer endpoint + get rid of x/mod/semver * depguard x/mod/semver * Add nolint rules for existing x/mod/semver usages * Add depguard explanation
74 lines
2.5 KiB
Go
74 lines
2.5 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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"github.com/coreos/go-semver/semver"
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"github.com/gravitational/trace"
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"github.com/gravitational/teleport/api/client/webclient"
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"github.com/gravitational/teleport/lib/automaticupgrades/cache"
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"github.com/gravitational/teleport/lib/automaticupgrades/constants"
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)
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type Finder interface {
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Find() (*webclient.PingResponse, error)
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}
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type proxyVersionClient struct {
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client Finder
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}
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func (b *proxyVersionClient) Get(_ context.Context) (*semver.Version, error) {
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resp, err := b.client.Find()
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if err != nil {
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return nil, trace.Wrap(err)
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}
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// We check if a version is advertised to know if the proxy implements RFD-184 or not.
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if resp.AutoUpdate.AgentVersion == "" {
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return nil, trace.NotImplemented("proxy does not seem to implement RFD-184")
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}
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return EnsureSemver(resp.AutoUpdate.AgentVersion)
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}
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// ProxyVersionGetter gets the target version from the Teleport Proxy Service /find endpoint, as
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// specified in the RFD-184: https://github.com/gravitational/teleport/blob/master/rfd/0184-agent-auto-updates.md
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// The Getter returns trace.NotImplementedErr when running against a proxy that does not seem to
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// expose automatic update instructions over the /find endpoint (proxy too old).
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type ProxyVersionGetter struct {
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cachedGetter func(context.Context) (*semver.Version, error)
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}
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// GetVersion implements Getter
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func (g ProxyVersionGetter) GetVersion(ctx context.Context) (*semver.Version, error) {
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return g.cachedGetter(ctx)
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}
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// NewProxyVersionGetter creates a ProxyVersionGetter from a webclient.
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// The answer is cached for a minute.
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func NewProxyVersionGetter(clt *webclient.ReusableClient) Getter {
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versionClient := &proxyVersionClient{
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client: clt,
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}
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return ProxyVersionGetter{cache.NewTimedMemoize[*semver.Version](versionClient.Get, constants.CacheDuration).Get}
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}
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