|
| 1 | +// Copyright Splunk Inc. |
| 2 | +// SPDX-License-Identifier: Apache-2.0 |
| 3 | + |
| 4 | +package main |
| 5 | + |
| 6 | +import ( |
| 7 | + "encoding/json" |
| 8 | + "flag" |
| 9 | + "fmt" |
| 10 | + "io" |
| 11 | + "log" |
| 12 | + "net/http" |
| 13 | + "os" |
| 14 | + "path/filepath" |
| 15 | + "regexp" |
| 16 | + "sort" |
| 17 | + "strconv" |
| 18 | + "strings" |
| 19 | + "time" |
| 20 | +) |
| 21 | + |
| 22 | +var debug bool |
| 23 | + |
| 24 | +const ( |
| 25 | + EndOfLifeURL string = "https://endoflife.date/api/kubernetes.json" |
| 26 | + KindDockerHubURL string = "https://hub.docker.com/v2/repositories/kindest/node/tags?page_size=1&page=1&ordering=last_updated&name=" |
| 27 | + MiniKubeURL string = "https://raw.githubusercontent.com/kubernetes/minikube/master/pkg/minikube/constants/constants_kubernetes_versions.go" |
| 28 | + KubeKindVersion string = "k8s-kind-version" |
| 29 | + KubeMinikubeVersion string = "k8s-minikube-version" |
| 30 | +) |
| 31 | + |
| 32 | +type KubernetesVersion struct { |
| 33 | + Cycle string `json:"cycle"` |
| 34 | + ReleaseDate string `json:"releaseDate"` |
| 35 | + EOLDate string `json:"eol"` |
| 36 | + Latest string `json:"latest"` |
| 37 | +} |
| 38 | + |
| 39 | +type DockerImage struct { |
| 40 | + Count int `json:"count"` |
| 41 | +} |
| 42 | + |
| 43 | +// getSupportedKubernetesVersions returns the supported Kubernetes versions |
| 44 | +// by checking the EOL date of the collected versions. |
| 45 | +func getSupportedKubernetesVersions(url string) ([]KubernetesVersion, error) { |
| 46 | + body, err := getRequestBody(url) |
| 47 | + if err != nil { |
| 48 | + return nil, fmt.Errorf("failed to get k8s versions: %w", err) |
| 49 | + } |
| 50 | + var kubernetesVersions, supportedKubernetesVersions []KubernetesVersion |
| 51 | + if err = json.Unmarshal(body, &kubernetesVersions); err != nil { |
| 52 | + return nil, fmt.Errorf("failed to unmarshal JSON: %w", err) |
| 53 | + } |
| 54 | + |
| 55 | + now := time.Now() |
| 56 | + for _, kubernetesVersion := range kubernetesVersions { |
| 57 | + eolDate, err := time.Parse(time.DateOnly, kubernetesVersion.EOLDate) |
| 58 | + if err != nil { |
| 59 | + return nil, fmt.Errorf("error parsing date: %w", err) |
| 60 | + } |
| 61 | + if eolDate.After(now) { |
| 62 | + supportedKubernetesVersions = append(supportedKubernetesVersions, kubernetesVersion) |
| 63 | + } else { |
| 64 | + logDebug("Skipping version %s, EOL date %s", kubernetesVersion.Cycle, kubernetesVersion.EOLDate) |
| 65 | + } |
| 66 | + } |
| 67 | + return supportedKubernetesVersions, nil |
| 68 | +} |
| 69 | + |
| 70 | +// getLatestSupportedMinikubeVersions iterates through the K8s supported versions and find the latest minikube after parsing |
| 71 | +// the sorted ValidKubernetesVersions slice from constants_kubernetes_versions.go |
| 72 | +func getLatestSupportedMinikubeVersions(url string, k8sVersions []KubernetesVersion) ([]string, error) { |
| 73 | + body, err := getRequestBody(url) |
| 74 | + if err != nil { |
| 75 | + return nil, fmt.Errorf("failed to get minikube versions: %w", err) |
| 76 | + } |
| 77 | + |
| 78 | + // Extract the slice using a regular expression |
| 79 | + re := regexp.MustCompile(`ValidKubernetesVersions = \[\]string{([^}]*)}`) |
| 80 | + matches := re.FindStringSubmatch(string(body)) |
| 81 | + if len(matches) < 2 { |
| 82 | + return nil, fmt.Errorf("minikube, failed to find the Kubernetes versions slice") |
| 83 | + } |
| 84 | + |
| 85 | + // Parse and cleanup the slice values |
| 86 | + minikubeVersions := strings.Split(strings.NewReplacer("\n", "", `"`, "", "\t", "", " ", "").Replace(matches[1]), ",") |
| 87 | + |
| 88 | + logDebug("Found minikube versions: %s", minikubeVersions) |
| 89 | + |
| 90 | + var latestMinikubeVersions []string |
| 91 | + // the minikube version slice is sorted, break when first cycle match is found |
| 92 | + for _, k8sVersion := range k8sVersions { |
| 93 | + for _, minikubeVersion := range minikubeVersions { |
| 94 | + if strings.Contains(minikubeVersion, k8sVersion.Cycle) { |
| 95 | + latestMinikubeVersions = append(latestMinikubeVersions, minikubeVersion) |
| 96 | + break |
| 97 | + } |
| 98 | + } |
| 99 | + } |
| 100 | + |
| 101 | + return latestMinikubeVersions, nil |
| 102 | +} |
| 103 | + |
| 104 | +// getLatestSupportedKindImages iterates through the K8s supported versions and find the latest kind |
| 105 | +// tag that supports that version |
| 106 | +func getLatestSupportedKindImages(url string, k8sVersions []KubernetesVersion) ([]string, error) { |
| 107 | + var supportedKindVersions []string |
| 108 | + for _, k8sVersion := range k8sVersions { |
| 109 | + tag := k8sVersion.Latest |
| 110 | + for { |
| 111 | + exists, err := imageTagExists(url, tag) |
| 112 | + if err != nil { |
| 113 | + return supportedKindVersions, fmt.Errorf("failed to check image tag existence: %w", err) |
| 114 | + } |
| 115 | + if exists { |
| 116 | + supportedKindVersions = append(supportedKindVersions, "v"+tag) |
| 117 | + break |
| 118 | + } |
| 119 | + tag, err = decrementMinorMinorVersion(tag) |
| 120 | + if err != nil { |
| 121 | + // It's possible that kind still does not have a tag for new versions, break the loop and |
| 122 | + // process other k8s versions |
| 123 | + if strings.Contains(err.Error(), "minor version cannot be decremented below 0") { |
| 124 | + logDebug("No kind image found for k8s version %s", k8sVersion.Cycle) |
| 125 | + break |
| 126 | + } |
| 127 | + return supportedKindVersions, fmt.Errorf("failed to decrement k8sVersion: %w", err) |
| 128 | + } |
| 129 | + } |
| 130 | + } |
| 131 | + return supportedKindVersions, nil |
| 132 | +} |
| 133 | + |
| 134 | +func imageTagExists(url string, tag string) (bool, error) { |
| 135 | + body, err := getRequestBody(url + tag) |
| 136 | + if err != nil { |
| 137 | + return false, fmt.Errorf("failed to get image tag: %w", err) |
| 138 | + } |
| 139 | + |
| 140 | + var kindImage DockerImage |
| 141 | + if err := json.Unmarshal(body, &kindImage); err != nil { |
| 142 | + return false, fmt.Errorf("failed to unmarshal JSON: %w", err) |
| 143 | + } |
| 144 | + |
| 145 | + if kindImage.Count > 0 { |
| 146 | + return true, nil |
| 147 | + } |
| 148 | + return false, nil |
| 149 | +} |
| 150 | + |
| 151 | +func decrementMinorMinorVersion(version string) (string, error) { |
| 152 | + parts := strings.Split(version, ".") |
| 153 | + if len(parts) < 3 { |
| 154 | + return "", fmt.Errorf("version does not have a minor version: %s", version) |
| 155 | + } |
| 156 | + |
| 157 | + minor, err := strconv.Atoi(parts[2]) |
| 158 | + if err != nil { |
| 159 | + return "", fmt.Errorf("invalid minor version: %s", parts[1]) |
| 160 | + } |
| 161 | + |
| 162 | + if minor == 0 { |
| 163 | + return "", fmt.Errorf("minor version cannot be decremented below 0") |
| 164 | + } |
| 165 | + |
| 166 | + parts[2] = strconv.Itoa(minor - 1) |
| 167 | + return strings.Join(parts, "."), nil |
| 168 | +} |
| 169 | + |
| 170 | +func updateMatrixFile(filePath string, kindVersions []string, minikubeVersions []string) error { |
| 171 | + content, err := os.ReadFile(filePath) |
| 172 | + if err != nil { |
| 173 | + return fmt.Errorf("failed to read file: %w", err) |
| 174 | + } |
| 175 | + |
| 176 | + var testMatrix map[string]map[string][]string |
| 177 | + if err = json.Unmarshal(content, &testMatrix); err != nil { |
| 178 | + return fmt.Errorf("failed to unmarshal JSON: %w", err) |
| 179 | + } |
| 180 | + |
| 181 | + for _, value := range testMatrix { |
| 182 | + if len(kindVersions) > 0 && value[KubeKindVersion] != nil { |
| 183 | + value[KubeKindVersion] = kindVersions |
| 184 | + } else if len(minikubeVersions) > 0 && value[KubeMinikubeVersion] != nil { |
| 185 | + value[KubeMinikubeVersion] = minikubeVersions |
| 186 | + } |
| 187 | + } |
| 188 | + // Marshal the updated test matrix back to JSON |
| 189 | + updatedContent, err := json.MarshalIndent(testMatrix, "", " ") |
| 190 | + if err != nil { |
| 191 | + return fmt.Errorf("failed to marshal updated JSON: %w", err) |
| 192 | + } |
| 193 | + |
| 194 | + // Ensure the file ends with a new line to make the pre-commit check happy |
| 195 | + updatedContent = append(updatedContent, '\n') |
| 196 | + |
| 197 | + if err = os.WriteFile(filePath, updatedContent, 0644); err != nil { |
| 198 | + return fmt.Errorf("failed to write updated file: %w", err) |
| 199 | + } |
| 200 | + return nil |
| 201 | +} |
| 202 | + |
| 203 | +func sortVersions(versions []string) { |
| 204 | + sort.Slice(versions, func(i, j int) bool { |
| 205 | + vi := strings.Split(versions[i][1:], ".") // Remove "v" and split by "." |
| 206 | + vj := strings.Split(versions[j][1:], ".") |
| 207 | + |
| 208 | + for k := 0; k < len(vi) && k < len(vj); k++ { |
| 209 | + if vi[k] != vj[k] { |
| 210 | + return vi[k] > vj[k] // Sort in descending order |
| 211 | + } |
| 212 | + } |
| 213 | + return len(vi) > len(vj) |
| 214 | + }) |
| 215 | +} |
| 216 | + |
| 217 | +func getRequestBody(url string) ([]byte, error) { |
| 218 | + resp, err := http.Get(url) |
| 219 | + if err != nil { |
| 220 | + return nil, fmt.Errorf("failed to fetch URL: %w", err) |
| 221 | + } |
| 222 | + defer resp.Body.Close() |
| 223 | + |
| 224 | + if resp.StatusCode != http.StatusOK { |
| 225 | + return nil, fmt.Errorf("unexpected status code: %d", resp.StatusCode) |
| 226 | + } |
| 227 | + |
| 228 | + body, err := io.ReadAll(resp.Body) |
| 229 | + if err != nil { |
| 230 | + return nil, fmt.Errorf("failed to read response body: %w", err) |
| 231 | + } |
| 232 | + return body, nil |
| 233 | +} |
| 234 | + |
| 235 | +func logDebug(format string, v ...interface{}) { |
| 236 | + if debug { |
| 237 | + log.Printf(format, v...) |
| 238 | + } |
| 239 | +} |
| 240 | + |
| 241 | +func main() { |
| 242 | + // setup logging |
| 243 | + flag.BoolVar(&debug, "debug", false, "Enable debug logging") |
| 244 | + flag.Parse() |
| 245 | + log.SetOutput(os.Stdout) |
| 246 | + log.SetFlags(log.LstdFlags | log.Lshortfile) |
| 247 | + |
| 248 | + k8sVersions, err := getSupportedKubernetesVersions(EndOfLifeURL) |
| 249 | + if err != nil || len(k8sVersions) == 0 { |
| 250 | + log.Fatalf("Failed to get k8s versions: %v", err) |
| 251 | + } |
| 252 | + logDebug("Found supported k8s versions %v", k8sVersions) |
| 253 | + |
| 254 | + kindVersions, err := getLatestSupportedKindImages(KindDockerHubURL, k8sVersions) |
| 255 | + if err != nil { |
| 256 | + log.Printf("failed to get all kind versions: %v", err) |
| 257 | + } |
| 258 | + if len(kindVersions) > 0 { |
| 259 | + // needs to be sorted so we don't end up with false positive diff in the json matrix file |
| 260 | + sortVersions(kindVersions) |
| 261 | + logDebug("Found supported kind images: %v", kindVersions) |
| 262 | + } |
| 263 | + |
| 264 | + minikubeVersions, err := getLatestSupportedMinikubeVersions(MiniKubeURL, k8sVersions) |
| 265 | + if err != nil { |
| 266 | + log.Printf("failed to get minikube versions: %v", err) |
| 267 | + } |
| 268 | + if len(minikubeVersions) > 0 { |
| 269 | + logDebug("Found supported minikube versions: %v", minikubeVersions) |
| 270 | + } |
| 271 | + |
| 272 | + if len(kindVersions) == 0 && len(minikubeVersions) == 0 { |
| 273 | + log.Fatalf("No supported versions found. Run with -debug=true for more info.") |
| 274 | + } |
| 275 | + |
| 276 | + path := "ci-matrix.json" |
| 277 | + currentDir, err := os.Getwd() |
| 278 | + if err != nil { |
| 279 | + log.Fatalf("Failed to get current directory: %v ", err) |
| 280 | + } |
| 281 | + path = filepath.Join(currentDir, filepath.Clean(path)) |
| 282 | + err = updateMatrixFile(path, kindVersions, minikubeVersions) |
| 283 | + if err != nil { |
| 284 | + log.Fatalf("Failed to update matrix file: %v", err) |
| 285 | + } |
| 286 | + os.Exit(0) |
| 287 | +} |
0 commit comments