package main import ( "archive/zip" "context" "flag" "fmt" "io" "io/ioutil" "os" "path/filepath" "runtime" "strings" "time" getter "github.com/hashicorp/go-getter" "github.com/hashicorp/terraform-svchost/disco" "github.com/hashicorp/terraform/addrs" "github.com/hashicorp/terraform/httpclient" "github.com/hashicorp/terraform/internal/depsfile" "github.com/hashicorp/terraform/internal/getproviders" "github.com/hashicorp/terraform/internal/providercache" discovery "github.com/hashicorp/terraform/plugin/discovery" "github.com/hashicorp/terraform/tfdiags" "github.com/hashicorp/terraform/version" "github.com/mitchellh/cli" ) var releaseHost = "https://releases.hashicorp.com" var pluginDir = ".plugins" type PackageCommand struct { ui cli.Ui } func (c *PackageCommand) Run(args []string) int { flags := flag.NewFlagSet("package", flag.ExitOnError) osPtr := flags.String("os", "", "Target operating system") archPtr := flags.String("arch", "", "Target CPU architecture") pluginDirPtr := flags.String("plugin-dir", "", "Path to custom plugins directory") err := flags.Parse(args) if err != nil { c.ui.Error(err.Error()) return 1 } osName := runtime.GOOS archName := runtime.GOARCH if *osPtr != "" { osName = *osPtr } if *archPtr != "" { archName = *archPtr } if *pluginDirPtr != "" { pluginDir = *pluginDirPtr } if flags.NArg() != 1 { c.ui.Error("Configuration filename is required") return 1 } configFn := flags.Arg(0) config, err := LoadConfigFile(configFn) if err != nil { c.ui.Error(fmt.Sprintf("Failed to read config: %s", err)) return 1 } tmpDir, err := ioutil.TempDir("", "terraform-bundle") if err != nil { c.ui.Error(fmt.Sprintf("Could not create temporary dir: %s", err)) return 1 } // symlinked tmp directories can cause odd behaviors. workDir, err := filepath.EvalSymlinks(tmpDir) if err != nil { c.ui.Error(fmt.Sprintf("Error evaulating symlinks: %s", err)) return 1 } defer os.RemoveAll(workDir) c.ui.Info(fmt.Sprintf("Fetching Terraform %s core package...", config.Terraform.Version)) coreZipURL := c.coreURL(config.Terraform.Version, osName, archName) err = getter.Get(workDir, coreZipURL) if err != nil { c.ui.Error(fmt.Sprintf("Failed to fetch core package from %s: %s", coreZipURL, err)) return 1 } // get the list of required providers from the config reqs := make(map[addrs.Provider][]string) for name, provider := range config.Providers { var fqn addrs.Provider var diags tfdiags.Diagnostics if provider.Source != "" { fqn, diags = addrs.ParseProviderSourceString(provider.Source) if diags.HasErrors() { c.ui.Error(fmt.Sprintf("Invalid provider source string: %s", provider.Source)) return 1 } } else { fqn = addrs.NewDefaultProvider(name) } reqs[fqn] = provider.Versions } // set up the provider installer platform := getproviders.Platform{ OS: osName, Arch: archName, } installdir := providercache.NewDirWithPlatform(filepath.Join(workDir, "plugins"), platform) services := disco.New() services.SetUserAgent(httpclient.TerraformUserAgent(version.String())) var sources []getproviders.MultiSourceSelector // Find any local providers first so we can exclude these from the registry // install. We'll just silently ignore any errors and assume it would fail // real installation later too. foundLocally := map[addrs.Provider]struct{}{} if absPluginDir, err := filepath.Abs(pluginDir); err == nil { c.ui.Info(fmt.Sprintf("Local plugin directory %q found; scanning for provider binaries.", pluginDir)) if _, err := os.Stat(absPluginDir); err == nil { localSource := getproviders.NewFilesystemMirrorSource(absPluginDir) if available, err := localSource.AllAvailablePackages(); err == nil { for found := range available { c.ui.Info(fmt.Sprintf("Found provider %q in %q. p", found.String(), pluginDir)) foundLocally[found] = struct{}{} } } sources = append(sources, getproviders.MultiSourceSelector{ Source: localSource, }) if len(foundLocally) == 0 { c.ui.Info(fmt.Sprintf("No local providers found in %q.", pluginDir)) } } else { c.ui.Info(fmt.Sprintf("No %q directory found, skipping local provider discovery.", pluginDir)) } } // Anything we found in local directories above is excluded from being // looked up via the registry source we're about to construct. var directExcluded getproviders.MultiSourceMatchingPatterns for addr := range foundLocally { directExcluded = append(directExcluded, addr) } // Add the registry source, minus any providers found in the local pluginDir. sources = append(sources, getproviders.MultiSourceSelector{ Source: getproviders.NewMemoizeSource(getproviders.NewRegistrySource(services)), Exclude: directExcluded, }) installer := providercache.NewInstaller(installdir, getproviders.MultiSource(sources)) err = c.ensureProviderVersions(installer, reqs) if err != nil { c.ui.Error(err.Error()) return 1 } // remove the selections.json file created by the provider installer os.Remove(filepath.Join(workDir, "plugins", "selections.json")) // If we get this far then our workDir now contains the union of the // contents of all the zip files we downloaded above. We can now create // our output file. outFn := c.bundleFilename(config.Terraform.Version, time.Now(), osName, archName) c.ui.Info(fmt.Sprintf("Creating %s ...", outFn)) outF, err := os.OpenFile(outFn, os.O_TRUNC|os.O_CREATE|os.O_WRONLY, os.ModePerm) if err != nil { c.ui.Error(fmt.Sprintf("Failed to create %s: %s", outFn, err)) return 1 } outZ := zip.NewWriter(outF) defer func() { err := outZ.Close() if err != nil { c.ui.Error(fmt.Sprintf("Failed to close %s: %s", outFn, err)) os.Exit(1) } err = outF.Close() if err != nil { c.ui.Error(fmt.Sprintf("Failed to close %s: %s", outFn, err)) os.Exit(1) } }() // recursively walk the workDir to get a list of all binary filepaths err = filepath.Walk(workDir, func(path string, info os.FileInfo, err error) error { if err != nil { return err } if info.IsDir() { return nil } // maybe symlinks linkPath, err := filepath.EvalSymlinks(path) if err != nil { return err } linkInfo, err := os.Stat(linkPath) if err != nil { return err } if linkInfo.IsDir() { // The only time we should encounter a symlink directory is when we // have a locally-installed provider, so we will grab the provider // binary from that file. files, err := ioutil.ReadDir(linkPath) if err != nil { return err } for _, file := range files { if strings.Contains(file.Name(), "terraform-provider") { relPath, _ := filepath.Rel(workDir, path) return addZipFile( filepath.Join(linkPath, file.Name()), // the link to this provider binary filepath.Join(relPath, file.Name()), // the expected directory for the binary file, outZ, ) } } // This shouldn't happen - we should always find a provider // binary and exit the loop - but on the chance it does not, // just continue. return nil } // provider plugins need to be created in the same relative directory structure absPath, err := filepath.Abs(linkPath) if err != nil { return err } relPath, err := filepath.Rel(workDir, absPath) if err != nil { return err } return addZipFile(path, relPath, info, outZ) }) if err != nil { c.ui.Error(err.Error()) return 1 } c.ui.Info("All done!") return 0 } // addZipFile is a helper function intneded to simplify customizing the file // path when adding a file to the zip archive. The relPath is specified for // provider binaries, which need to be zipped into the full directory hierarchy. func addZipFile(fn, relPath string, info os.FileInfo, outZ *zip.Writer) error { hdr, err := zip.FileInfoHeader(info) if err != nil { return fmt.Errorf("Failed to add zip entry for %s: %s", fn, err) } hdr.Method = zip.Deflate // be sure to compress files hdr.Name = relPath // we need the full, relative path to the provider binary w, err := outZ.CreateHeader(hdr) if err != nil { return fmt.Errorf("Failed to add zip entry for %s: %s", fn, err) } r, err := os.Open(fn) if err != nil { return fmt.Errorf("Failed to open %s: %s", fn, err) } _, err = io.Copy(w, r) if err != nil { return fmt.Errorf("Failed to write %s to bundle: %s", fn, err) } return nil } func (c *PackageCommand) bundleFilename(version discovery.VersionStr, time time.Time, osName, archName string) string { time = time.UTC() return fmt.Sprintf( "terraform_%s-bundle%04d%02d%02d%02d_%s_%s.zip", version, time.Year(), time.Month(), time.Day(), time.Hour(), osName, archName, ) } func (c *PackageCommand) coreURL(version discovery.VersionStr, osName, archName string) string { return fmt.Sprintf( "%s/terraform/%s/terraform_%s_%s_%s.zip", releaseHost, version, version, osName, archName, ) } func (c *PackageCommand) Synopsis() string { return "Produces a bundle archive" } func (c *PackageCommand) Help() string { return `Usage: terraform-bundle package [options] Uses the given bundle configuration file to produce a zip file in the current working directory containing a Terraform binary along with zero or more provider plugin binaries. Options: -os=name Target operating system the archive will be built for. Defaults to that of the system where the command is being run. -arch=name Target CPU architecture the archive will be built for. Defaults to that of the system where the command is being run. -plugin-dir=path The path to the custom plugins directory. Defaults to "./plugins". The resulting zip file can be used to more easily install Terraform and a fixed set of providers together on a server, so that Terraform's provider auto-installation mechanism can be avoided. To build an archive for Terraform Enterprise, use: -os=linux -arch=amd64 Note that the given configuration file is a format specific to this command, not a normal Terraform configuration file. The file format looks like this: terraform { # Version of Terraform to include in the bundle. An exact version number # is required. version = "0.13.0" } # Define which provider plugins are to be included providers { # Include the newest "aws" provider version in the 1.0 series. aws = { versions = ["~> 1.0"] } # Include both the newest 1.0 and 2.0 versions of the "google" provider. # Each item in these lists allows a distinct version to be added. If the # two expressions match different versions then _both_ are included in # the bundle archive. google = { versions = ["~> 1.0", "~> 2.0"] } # Include a custom plugin to the bundle. Will search for the plugin in the # plugins directory, and package it with the bundle archive. Plugin must # have a name of the form: terraform-provider-*, and must be built with # the operating system and architecture that terraform enterprise is running, # e.g. linux and amd64. # See the README for more information on the source attribute and plugin # directory layout. customplugin = { versions = ["0.1"] source = "example.com/myorg/customplugin" } } ` } // ensureProviderVersions is a wrapper around // providercache.EnsureProviderVersions which allows installing multiple // versions of a given provider. func (c *PackageCommand) ensureProviderVersions(installer *providercache.Installer, reqs map[addrs.Provider][]string) error { mode := providercache.InstallNewProvidersOnly evts := &providercache.InstallerEvents{ ProviderAlreadyInstalled: func(provider addrs.Provider, selectedVersion getproviders.Version) { c.ui.Info(fmt.Sprintf("- Using previously-installed %s v%s", provider.ForDisplay(), selectedVersion)) }, QueryPackagesBegin: func(provider addrs.Provider, versionConstraints getproviders.VersionConstraints, locked bool) { if len(versionConstraints) > 0 { c.ui.Info(fmt.Sprintf("- Finding %s versions matching %q...", provider.ForDisplay(), getproviders.VersionConstraintsString(versionConstraints))) } else { c.ui.Info(fmt.Sprintf("- Finding latest version of %s...", provider.ForDisplay())) } }, FetchPackageBegin: func(provider addrs.Provider, version getproviders.Version, location getproviders.PackageLocation) { c.ui.Info(fmt.Sprintf("- Installing %s v%s...", provider.ForDisplay(), version)) }, QueryPackagesFailure: func(provider addrs.Provider, err error) { c.ui.Error(fmt.Sprintf("Could not retrieve the list of available versions for provider %s: %s.", provider.ForDisplay(), err)) }, FetchPackageFailure: func(provider addrs.Provider, version getproviders.Version, err error) { c.ui.Error(fmt.Sprintf("Error while installing %s v%s: %s.", provider.ForDisplay(), version, err)) }, } ctx := evts.OnContext(context.TODO()) for provider, versions := range reqs { for _, constraint := range versions { req := make(getproviders.Requirements, 1) cstr, err := getproviders.ParseVersionConstraints(constraint) if err != nil { return err } req[provider] = cstr // We always start with no locks here, because we want to take // the newest version matching the given version constraint, and // never consider anything that might've been selected before. locks := depsfile.NewLocks() _, err = installer.EnsureProviderVersions(ctx, locks, req, mode) if err != nil { return err } } } return nil }