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/*
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Copyright © 2020-2021 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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"fmt"
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"os"
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"strings"
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"github.com/heroku/docker-registry-client/registry"
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l "github.com/rancher/k3d/v5/pkg/logger"
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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 = "v1.21.4-k3s2"
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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 "v4-dev"
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}
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return Version
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}
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// GetHelperImageVersion returns the CLI version or 'latest'
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func GetHelperImageVersion() string {
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if tag := os.Getenv("K3D_HELPER_IMAGE_TAG"); tag != "" {
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l.Log().Infoln("Helper image tag set from env var")
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return tag
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}
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if len(HelperVersionOverride) > 0 {
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return HelperVersionOverride
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}
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if len(Version) == 0 {
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return "latest"
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}
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return strings.TrimPrefix(Version, "v")
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}
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// GetK3sVersion returns the version string for K3s
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func GetK3sVersion(latest bool) string {
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if latest {
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version, err := fetchLatestK3sVersion()
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if err != nil || version == "" {
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l.Log().Warnln("Failed to fetch latest K3s version from DockerHub, falling back to hardcoded version.")
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return K3sVersion
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}
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return version
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}
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return K3sVersion
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}
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// fetchLatestK3sVersion tries to fetch the latest version of k3s from DockerHub
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func fetchLatestK3sVersion() (string, error) {
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// TODO: actually fetch the latest image from the k3s channel server
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url := "https://registry-1.docker.io/"
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username := "" // anonymous
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password := "" // anonymous
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repository := "rancher/k3s"
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hub, err := registry.New(url, username, password)
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if err != nil {
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return "", fmt.Errorf("failed to create new registry instance from URL '%s': %w", url, err)
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}
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tags, err := hub.Tags(repository)
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if err != nil || len(tags) == 0 {
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return "", fmt.Errorf("failed to list tags from repository with URL '%s': %w", url, err)
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}
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l.Log().Debugln("Fetched the following tags for rancher/k3s from DockerHub:")
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l.Log().Debugln(tags)
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return "sampleTag", nil
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}
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