|
| 1 | +package cmd |
| 2 | + |
| 3 | +import ( |
| 4 | + "context" |
| 5 | + "encoding/json" |
| 6 | + "fmt" |
| 7 | + "log" |
| 8 | + "os" |
| 9 | + "os/exec" |
| 10 | + "path/filepath" |
| 11 | + "strings" |
| 12 | + |
| 13 | + "github.com/Masterminds/semver/v3" |
| 14 | + "github.com/google/go-github/v62/github" |
| 15 | + "github.com/spf13/cobra" |
| 16 | +) |
| 17 | + |
| 18 | +var owner string |
| 19 | +var repo string |
| 20 | +var vendorHashPath string |
| 21 | +var versionsPath string |
| 22 | +var minVersionStr string |
| 23 | +var maxVersionStr string |
| 24 | + |
| 25 | +type Versions struct { |
| 26 | + Releases map[semver.Version]Release `json:"releases"` |
| 27 | + Latest map[Alias]semver.Version `json:"latest"` |
| 28 | +} |
| 29 | + |
| 30 | +type Release struct { |
| 31 | + Hash string `json:"hash"` |
| 32 | + VendorHash string `json:"vendorHash"` |
| 33 | +} |
| 34 | + |
| 35 | +type Alias struct { |
| 36 | + semver.Version |
| 37 | +} |
| 38 | + |
| 39 | +func (a Alias) MarshalText() ([]byte, error) { |
| 40 | + return []byte(fmt.Sprintf("%d.%d", a.Major(), a.Minor())), nil |
| 41 | +} |
| 42 | + |
| 43 | +var updateVersionsCmd = &cobra.Command{ |
| 44 | + Use: "update-versions", |
| 45 | + Short: "Update versions file", |
| 46 | + Long: "Look up the most recent Terraform releases and calculate the needed hashes for new versions", |
| 47 | + Run: func(cmd *cobra.Command, args []string) { |
| 48 | + token := os.Getenv("CLI_GITHUB_TOKEN") |
| 49 | + if token == "" { |
| 50 | + log.Fatal("Environment variable CLI_GITHUB_TOKEN is missing") |
| 51 | + } |
| 52 | + |
| 53 | + versionsPath, err := filepath.Abs(versionsPath) |
| 54 | + if err != nil { |
| 55 | + log.Fatal("File versions.json not found: ", err) |
| 56 | + } |
| 57 | + |
| 58 | + vendorHashPath, err := filepath.Abs(vendorHashPath) |
| 59 | + if err != nil { |
| 60 | + log.Fatal("File vendor-hash.nix not found: ", err) |
| 61 | + } |
| 62 | + |
| 63 | + minVersion, err := semver.NewVersion(minVersionStr) |
| 64 | + if err != nil { |
| 65 | + log.Fatal("Invalid min-version: ", err) |
| 66 | + } |
| 67 | + |
| 68 | + var maxVersion *semver.Version |
| 69 | + if maxVersionStr != "" { |
| 70 | + maxVersion, err = semver.NewVersion(maxVersionStr) |
| 71 | + if err != nil { |
| 72 | + log.Fatal("Invalid max-version: ", err) |
| 73 | + } |
| 74 | + } |
| 75 | + |
| 76 | + err = updateVersions(token, versionsPath, vendorHashPath, minVersion, maxVersion) |
| 77 | + if err != nil { |
| 78 | + log.Fatal("Unable to update versions: ", err) |
| 79 | + } |
| 80 | + }, |
| 81 | +} |
| 82 | + |
| 83 | +func updateVersions(token string, versionsPath string, vendorHashPath string, minVersion *semver.Version, maxVersion *semver.Version) error { |
| 84 | + nixPrefetchPath, err := exec.LookPath("nix-prefetch") |
| 85 | + if err != nil { |
| 86 | + return fmt.Errorf("nix-prefetch not found: %w", err) |
| 87 | + } |
| 88 | + |
| 89 | + versions, err := readVersions(versionsPath) |
| 90 | + if err != nil { |
| 91 | + return err |
| 92 | + } |
| 93 | + |
| 94 | + err = withReleases(token, func(release *github.RepositoryRelease) error { |
| 95 | + tagName := release.GetTagName() |
| 96 | + version, err := semver.NewVersion(strings.TrimLeft(tagName, "v")) |
| 97 | + if err != nil { |
| 98 | + return err |
| 99 | + } |
| 100 | + if version.Compare(minVersion) >= 0 && (maxVersion == nil || version.Compare(maxVersion) <= 0) && version.Prerelease() == "" { |
| 101 | + if _, ok := versions.Releases[*version]; ok { |
| 102 | + log.Printf("Version %s found in file\n", version) |
| 103 | + } else { |
| 104 | + log.Printf("Computing hashes for %s\n", version) |
| 105 | + hash, err := computeHash(nixPrefetchPath, tagName) |
| 106 | + if err != nil { |
| 107 | + return fmt.Errorf("Unable to compute hash: %w", err) |
| 108 | + } |
| 109 | + log.Printf("Computed hash: %s\n", hash) |
| 110 | + vendorHash, err := computeVendorHash(nixPrefetchPath, vendorHashPath, version, hash) |
| 111 | + if err != nil { |
| 112 | + return fmt.Errorf("Unable to compute vendor hash: %w", err) |
| 113 | + } |
| 114 | + log.Printf("Computed vendor hash: %s\n", vendorHash) |
| 115 | + versions.Releases[*version] = Release{Hash: hash, VendorHash: vendorHash} |
| 116 | + } |
| 117 | + } |
| 118 | + return nil |
| 119 | + }) |
| 120 | + if err != nil { |
| 121 | + return err |
| 122 | + } |
| 123 | + |
| 124 | + versions.Latest = make(map[Alias]semver.Version) |
| 125 | + for version := range versions.Releases { |
| 126 | + alias := Alias{*semver.New(version.Major(), version.Minor(), 0, "", "")} |
| 127 | + if latest, ok := versions.Latest[alias]; !ok || version.Compare(&latest) > 0 { |
| 128 | + versions.Latest[alias] = version |
| 129 | + } |
| 130 | + } |
| 131 | + |
| 132 | + content, err := json.MarshalIndent(versions, "", " ") |
| 133 | + if err != nil { |
| 134 | + log.Fatal("Unable to marshall versions: ", err) |
| 135 | + } |
| 136 | + |
| 137 | + err = os.WriteFile(versionsPath, content, 0644) |
| 138 | + if err != nil { |
| 139 | + log.Fatal("Unable to write file: ", err) |
| 140 | + } |
| 141 | + |
| 142 | + return nil |
| 143 | +} |
| 144 | + |
| 145 | +func readVersions(versionsPath string) (*Versions, error) { |
| 146 | + content, err := os.ReadFile(versionsPath) |
| 147 | + if err != nil { |
| 148 | + return nil, err |
| 149 | + } |
| 150 | + var versions *Versions |
| 151 | + err = json.Unmarshal(content, &versions) |
| 152 | + if err != nil { |
| 153 | + return nil, err |
| 154 | + } |
| 155 | + return versions, nil |
| 156 | +} |
| 157 | + |
| 158 | +func withReleases(token string, f func(release *github.RepositoryRelease) error) error { |
| 159 | + client := github.NewClient(nil).WithAuthToken(token) |
| 160 | + opt := &github.ListOptions{Page: 1} |
| 161 | + for { |
| 162 | + releases, resp, err := client.Repositories.ListReleases(context.Background(), owner, repo, opt) |
| 163 | + if err != nil { |
| 164 | + return err |
| 165 | + } |
| 166 | + for _, release := range releases { |
| 167 | + err = f(release) |
| 168 | + if err != nil { |
| 169 | + return err |
| 170 | + } |
| 171 | + } |
| 172 | + if resp.NextPage == 0 { |
| 173 | + break |
| 174 | + } |
| 175 | + opt.Page = resp.NextPage |
| 176 | + } |
| 177 | + return nil |
| 178 | +} |
| 179 | + |
| 180 | +func computeHash(nixPrefetchPath string, tagName string) (string, error) { |
| 181 | + hash, err := runNixPrefetch( |
| 182 | + nixPrefetchPath, |
| 183 | + "fetchFromGitHub", |
| 184 | + "--owner", |
| 185 | + owner, |
| 186 | + "--repo", |
| 187 | + repo, |
| 188 | + "--rev", |
| 189 | + tagName) |
| 190 | + if err != nil { |
| 191 | + return "", err |
| 192 | + } |
| 193 | + return hash, nil |
| 194 | +} |
| 195 | + |
| 196 | +func computeVendorHash(nixPrefetchPath string, vendorHashFile string, version *semver.Version, hash string) (string, error) { |
| 197 | + vendorHash, err := runNixPrefetch( |
| 198 | + nixPrefetchPath, |
| 199 | + "--file", |
| 200 | + vendorHashFile, |
| 201 | + "--argstr", |
| 202 | + "version", |
| 203 | + version.String(), |
| 204 | + "--argstr", |
| 205 | + "hash", |
| 206 | + hash) |
| 207 | + if err != nil { |
| 208 | + return "", err |
| 209 | + } |
| 210 | + return vendorHash, nil |
| 211 | +} |
| 212 | + |
| 213 | +func runNixPrefetch(nixPrefetchPath string, extraArgs ...string) (string, error) { |
| 214 | + args := append([]string{"--option", "extra-experimental-features", "flakes"}, extraArgs...) |
| 215 | + cmd := exec.Command(nixPrefetchPath, args...) |
| 216 | + cmd.Stderr = log.Writer() |
| 217 | + output, err := cmd.Output() |
| 218 | + if err != nil { |
| 219 | + return "", err |
| 220 | + } |
| 221 | + return strings.TrimRight(string(output), "\n"), nil |
| 222 | +} |
| 223 | + |
| 224 | +func init() { |
| 225 | + rootCmd.AddCommand(updateVersionsCmd) |
| 226 | + |
| 227 | + updateVersionsCmd.Flags().StringVarP(&owner, "owner", "", "hashicorp", "The owner name of the repository on GitHub") |
| 228 | + updateVersionsCmd.Flags().StringVarP(&repo, "repo", "", "terraform", "The repository name on GitHub") |
| 229 | + updateVersionsCmd.Flags().StringVarP(&vendorHashPath, "vendor-hash", "", "vendor-hash.nix", "Nix file required to compute vendorHash") |
| 230 | + updateVersionsCmd.Flags().StringVarP(&versionsPath, "versions", "", "versions.json", "The file to be updated") |
| 231 | + updateVersionsCmd.Flags().StringVarP(&minVersionStr, "min-version", "", "1.0.0", "Min release version") |
| 232 | + updateVersionsCmd.Flags().StringVarP(&maxVersionStr, "max-version", "", "", "Max release version") |
| 233 | +} |
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