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113 lines
3.3 KiB
113 lines
3.3 KiB
/*
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Copyright © 2020-2022 The k3d Author(s)
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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package version
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import (
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"strings"
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"github.com/k3d-io/k3d/v5/pkg/types/k3s"
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)
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// Version is the string that contains version
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var Version string
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// HelperVersionOverride decouples the k3d helper image versions from the main version, if needed
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var HelperVersionOverride string
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// K3sVersion should contain the latest version tag of k3s (hardcoded at build time)
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var K3sVersion = "v1.21.7-k3s1"
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type httpClient struct {
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client *http.Client
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baseURL string
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}
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// GetVersion returns the version for cli, it gets it from "git describe --tags" or returns "dev" when doing simple go build
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func GetVersion() string {
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if len(Version) == 0 {
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return "v5-dev"
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}
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return Version
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}
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// GetK3sVersion returns the version string for K3s
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func GetK3sVersion(channel string) (string, error) {
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if channel != "" {
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version, err := newHttpClient(k3s.K3sChannelServerURL).fetchLatestK3sVersion(channel)
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if err != nil {
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return "", fmt.Errorf("error getting K3s version for channel %s: %w", channel, err)
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}
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return version, nil
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}
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return K3sVersion, nil
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}
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// fetchLatestK3sVersion tries to fetch the latest version of k3s from DockerHub
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func (c *httpClient) fetchLatestK3sVersion(channel string) (string, error) {
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request, err := http.NewRequest(http.MethodGet, c.baseURL, nil)
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if err != nil {
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return "", err
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}
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resp, err := c.client.Do(request)
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if err != nil {
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return "", err
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}
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defer func(Body io.ReadCloser) {
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_ = Body.Close()
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}(resp.Body)
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if resp.StatusCode != http.StatusOK {
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return "", fmt.Errorf(fmt.Sprintf("call made to '%s' failed with status code '%d'", c.baseURL, resp.StatusCode))
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}
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out := k3s.ChannelServerResponse{}
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body, err := io.ReadAll(resp.Body)
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if err != nil {
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return "", fmt.Errorf("error reading channelserver response body: %w", err)
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}
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if err = json.Unmarshal(body, &out); err != nil {
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return "", fmt.Errorf("error unmarshalling channelserver response: %w", err)
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}
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for _, c := range out.Channels {
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if c.Name == channel {
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return strings.ReplaceAll(c.Latest, "+", "-"), err
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}
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}
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return "", fmt.Errorf("no latest version found for channel %s (%s)", channel, c.baseURL)
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}
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func newHttpClient(baseURL string) *httpClient {
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return &httpClient{
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client: &http.Client{},
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baseURL: baseURL,
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}
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}
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