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kubetest2-gke automatically resolves the release channel if it's not …
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,164 @@ | ||
| /* | ||
| Copyright 2021 The Kubernetes Authors. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
||
| package deployer | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "regexp" | ||
| "strings" | ||
|
|
||
| "google.golang.org/api/container/v1" | ||
| "gopkg.in/yaml.v2" | ||
| "k8s.io/apimachinery/pkg/util/sets" | ||
| "sigs.k8s.io/kubetest2/pkg/exec" | ||
| ) | ||
|
|
||
| var ( | ||
| noneReleaseChannel = "None" | ||
| rapidReleaseChannel = "rapid" | ||
| regularReleaseChannel = "regular" | ||
| stableReleaseChannel = "stable" | ||
|
|
||
| validReleaseChannels = sets.NewString(noneReleaseChannel, rapidReleaseChannel, regularReleaseChannel, stableReleaseChannel) | ||
| ) | ||
|
|
||
| func validateVersion(version string) error { | ||
| switch version { | ||
| case "latest", "": | ||
| return nil | ||
| default: | ||
| re, err := regexp.Compile(`(\d)\.(\d)+(\.(\d)*(.*))?`) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if !re.MatchString(version) { | ||
| return fmt.Errorf("unknown version %q", version) | ||
| } | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func validateReleaseChannel(releaseChannel string) error { | ||
| if releaseChannel != "" && !validReleaseChannels.Has(releaseChannel) { | ||
| return fmt.Errorf("%q is not one of the valid release channels %v", releaseChannel, validReleaseChannels) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| // Resolve the current latest version in the given release channel. | ||
| func resolveLatestVersionInChannel(loc, channelName string) (string, error) { | ||
| // Get the server config for the current location. | ||
| cfg, err := getServerConfig(loc) | ||
| if err != nil { | ||
| return "", fmt.Errorf("error getting server config: %w", err) | ||
| } | ||
| for _, channel := range cfg.Channels { | ||
| if strings.EqualFold(channel.Channel, channelName) { | ||
| if len(channel.ValidVersions) == 0 { | ||
| return "", fmt.Errorf("no valid versions for channel %q", channelName) | ||
| } | ||
| return channel.ValidVersions[0], nil | ||
| } | ||
| } | ||
|
|
||
| return "", fmt.Errorf("channel %q does not exist in the server config", channelName) | ||
| } | ||
|
|
||
| // Resolve the valid release channel for the given cluster version. | ||
| func resolveReleaseChannelForClusterVersion(clusterVersion, loc string) (string, error) { | ||
| if clusterVersion == "" || clusterVersion == "latest" { | ||
| // For latest or non cluster version, always use none release channel. | ||
| return noneReleaseChannel, nil | ||
| } | ||
|
|
||
| // Get the server config. | ||
| cfg, err := getServerConfig(loc) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
|
|
||
| // Look through the versions not associated with a channel. | ||
| for _, v := range cfg.ValidMasterVersions { | ||
| if isClusterVersionMatch(clusterVersion, v) { | ||
| // Use None release channel if there is a match in the valid master versions. | ||
| return noneReleaseChannel, nil | ||
| } | ||
| } | ||
|
|
||
| // Look through all the channels. | ||
| for _, channel := range cfg.Channels { | ||
| for _, v := range channel.ValidVersions { | ||
| if isClusterVersionMatch(clusterVersion, v) { | ||
| return toReleaseChannel(channel.Channel) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return noneReleaseChannel, fmt.Errorf("no matched release channel found for cluster version %q", clusterVersion) | ||
| } | ||
|
|
||
| func toReleaseChannel(channelName string) (string, error) { | ||
| switch channelName { | ||
| case "RAPID": | ||
| return rapidReleaseChannel, nil | ||
| case "REGULAR": | ||
| return regularReleaseChannel, nil | ||
| case "STABLE": | ||
| return stableReleaseChannel, nil | ||
| default: | ||
| return "", fmt.Errorf("selected unknown release channel: %s", channelName) | ||
| } | ||
| } | ||
|
|
||
| // isClusterVersionMatch compares a cluster version against a match version. The match version can | ||
| // be used to match against various patch versions. For example, the match version 1.7 will match | ||
| // against versions 1.7.3 and 1.7.10. | ||
| func isClusterVersionMatch(match, version string) bool { | ||
| if match == version { | ||
| return true | ||
| } | ||
|
|
||
| matchParts := strings.Split(match, ".") | ||
| parts := strings.Split(version, ".") | ||
|
|
||
| if len(parts) < len(matchParts) { | ||
| return false | ||
| } | ||
|
|
||
| for i := 0; i < len(matchParts); i++ { | ||
| if matchParts[i] != parts[i] { | ||
| return false | ||
| } | ||
| } | ||
| return true | ||
| } | ||
|
|
||
| func getServerConfig(loc string) (*container.ServerConfig, error) { | ||
| // List the available versions for each release channel. | ||
| out, err := exec.Output(exec.RawCommand((fmt.Sprintf("gcloud container get-server-config --format=yaml %s", loc)))) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| // Parse the YAML into a struct. | ||
| cfg := &container.ServerConfig{} | ||
| if err := yaml.Unmarshal(out, cfg); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return cfg, nil | ||
| } |
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