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Merge pull request #1 from ibuildthecloud/master
Dynamically lookup k3s and Rancher versions from channel servers
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,17 +1,114 @@ | ||
| package versions | ||
|
|
||
| import "github.com/rancher/rancherd/pkg/config" | ||
| import ( | ||
| "fmt" | ||
| "net/http" | ||
| "path" | ||
| "strings" | ||
| "sync" | ||
|
|
||
| func K8sVersion(config *config.Config) string { | ||
| if config.KubernetesVersion == "" { | ||
| return "v1.21.1+k3s1" | ||
| "github.com/rancher/rancherd/pkg/config" | ||
| "gopkg.in/yaml.v3" | ||
| ) | ||
|
|
||
| var ( | ||
| cachedK8sVersion = map[string]string{} | ||
| cachedRancherVersion = map[string]string{} | ||
| cachedLock sync.Mutex | ||
| redirectClient = &http.Client{ | ||
| CheckRedirect: func(req *http.Request, via []*http.Request) error { | ||
| return http.ErrUseLastResponse | ||
| }, | ||
| } | ||
| ) | ||
|
|
||
| func getVersionOrURL(urlFormat, def, version string) (_ string, isURL bool) { | ||
| if version == "" { | ||
| version = def | ||
| } | ||
|
|
||
| if strings.HasPrefix(version, "v") && len(strings.Split(version, ".")) > 2 { | ||
| return version, false | ||
| } | ||
|
|
||
| channelURL := version | ||
| if !strings.HasPrefix(channelURL, "https://") && | ||
| !strings.HasPrefix(channelURL, "http://") { | ||
| if strings.HasSuffix(channelURL, "-head") { | ||
| return channelURL, false | ||
| } | ||
| channelURL = fmt.Sprintf(urlFormat, version) | ||
| } | ||
| return config.KubernetesVersion | ||
|
|
||
| return channelURL, true | ||
| } | ||
|
|
||
| func RancherVersion(config *config.Config) string { | ||
| if config.RancherVersion == "" { | ||
| return "master-head" | ||
| func K8sVersion(config *config.Config) (string, error) { | ||
| cachedLock.Lock() | ||
| defer cachedLock.Unlock() | ||
|
|
||
| cached, ok := cachedK8sVersion[config.KubernetesVersion] | ||
| if ok { | ||
| return cached, nil | ||
| } | ||
|
|
||
| versionOrURL, isURL := getVersionOrURL("https://update.k3s.io/v1-release/channels/%s", "testing", config.KubernetesVersion) | ||
| if !isURL { | ||
| return versionOrURL, nil | ||
| } | ||
|
|
||
| resp, err := redirectClient.Get(versionOrURL) | ||
| if err != nil { | ||
| return "", fmt.Errorf("getting channel version from (%s): %w", versionOrURL, err) | ||
| } | ||
| defer resp.Body.Close() | ||
|
|
||
| url, err := resp.Location() | ||
| if err != nil { | ||
| return "", fmt.Errorf("getting channel version URL from (%s): %w", versionOrURL, err) | ||
| } | ||
| return config.RancherVersion | ||
|
|
||
| versionOrURL = path.Base(url.Path) | ||
| cachedK8sVersion[config.KubernetesVersion] = versionOrURL | ||
| return versionOrURL, nil | ||
| } | ||
|
|
||
| func RancherVersion(config *config.Config) (string, error) { | ||
| cachedLock.Lock() | ||
| defer cachedLock.Unlock() | ||
|
|
||
| cached, ok := cachedRancherVersion[config.RancherVersion] | ||
| if ok { | ||
| return cached, nil | ||
| } | ||
|
|
||
| versionOrURL, isURL := getVersionOrURL("https://releases.rancher.com/server-charts/%s/index.yaml", "master-head", config.RancherVersion) | ||
| if !isURL { | ||
| return versionOrURL, nil | ||
| } | ||
|
|
||
| resp, err := http.Get(versionOrURL) | ||
| if err != nil { | ||
| return "", fmt.Errorf("getting rancher channel version from (%s): %w", versionOrURL, err) | ||
| } | ||
| defer resp.Body.Close() | ||
|
|
||
| index := &chartIndex{} | ||
| if err := yaml.NewDecoder(resp.Body).Decode(index); err != nil { | ||
| return "", fmt.Errorf("unmarshalling rancher channel version from (%s): %w", versionOrURL, err) | ||
| } | ||
|
|
||
| versions := index.Entries["rancher"] | ||
| if len(versions) == 0 { | ||
| return "", fmt.Errorf("failed to find version for rancher chart at (%s)", versionOrURL) | ||
| } | ||
|
|
||
| cachedRancherVersion[config.RancherVersion] = versions[0].Version | ||
| return versions[0].Version, nil | ||
| } | ||
|
|
||
| type chartIndex struct { | ||
| Entries map[string][]struct { | ||
| Version string `yaml:"version"` | ||
| } `yaml:"entries"` | ||
| } |