mirror of
https://github.com/edgelesssys/constellation.git
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278 lines
11 KiB
Go
278 lines
11 KiB
Go
/*
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Copyright (c) Edgeless Systems GmbH
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SPDX-License-Identifier: AGPL-3.0-only
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*/
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package cmd
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import (
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"errors"
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"fmt"
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"io/fs"
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"github.com/edgelesssys/constellation/v2/cli/internal/cloudcmd"
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"github.com/edgelesssys/constellation/v2/cli/internal/cmd/pathprefix"
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"github.com/edgelesssys/constellation/v2/cli/internal/state"
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"github.com/edgelesssys/constellation/v2/cli/internal/terraform"
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"github.com/edgelesssys/constellation/v2/internal/api/attestationconfigapi"
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"github.com/edgelesssys/constellation/v2/internal/api/versionsapi"
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"github.com/edgelesssys/constellation/v2/internal/attestation/variant"
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"github.com/edgelesssys/constellation/v2/internal/config"
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"github.com/edgelesssys/constellation/v2/internal/constants"
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"github.com/edgelesssys/constellation/v2/internal/file"
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"github.com/edgelesssys/constellation/v2/internal/semver"
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"github.com/spf13/afero"
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"github.com/spf13/cobra"
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"github.com/spf13/pflag"
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)
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// NewCreateCmd returns a new cobra.Command for the create command.
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func NewCreateCmd() *cobra.Command {
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cmd := &cobra.Command{
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Use: "create",
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Short: "Create instances on a cloud platform for your Constellation cluster",
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Long: "Create instances on a cloud platform for your Constellation cluster.",
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Args: cobra.ExactArgs(0),
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RunE: runCreate,
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}
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cmd.Flags().BoolP("yes", "y", false, "create the cluster without further confirmation")
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return cmd
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}
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// createFlags contains the parsed flags of the create command.
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type createFlags struct {
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rootFlags
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yes bool
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}
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// parse parses the flags of the create command.
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func (f *createFlags) parse(flags *pflag.FlagSet) error {
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if err := f.rootFlags.parse(flags); err != nil {
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return err
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}
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yes, err := flags.GetBool("yes")
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if err != nil {
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return fmt.Errorf("getting 'yes' flag: %w", err)
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}
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f.yes = yes
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return nil
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}
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type createCmd struct {
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log debugLog
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flags createFlags
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}
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func runCreate(cmd *cobra.Command, _ []string) error {
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log, err := newCLILogger(cmd)
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if err != nil {
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return fmt.Errorf("creating logger: %w", err)
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}
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defer log.Sync()
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spinner, err := newSpinnerOrStderr(cmd)
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if err != nil {
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return fmt.Errorf("creating spinner: %w", err)
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}
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defer spinner.Stop()
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fileHandler := file.NewHandler(afero.NewOsFs())
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creator := cloudcmd.NewCreator(spinner)
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c := &createCmd{log: log}
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if err := c.flags.parse(cmd.Flags()); err != nil {
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return err
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}
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c.log.Debugf("Using flags: %+v", c.flags)
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fetcher := attestationconfigapi.NewFetcher()
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return c.create(cmd, creator, fileHandler, spinner, fetcher)
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}
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func (c *createCmd) create(cmd *cobra.Command, creator cloudCreator, fileHandler file.Handler, spinner spinnerInterf, fetcher attestationconfigapi.Fetcher) (retErr error) {
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if err := c.checkDirClean(fileHandler); err != nil {
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return err
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}
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c.log.Debugf("Loading configuration file from %q", c.flags.pathPrefixer.PrefixPrintablePath(constants.ConfigFilename))
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conf, err := config.New(fileHandler, constants.ConfigFilename, fetcher, c.flags.force)
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c.log.Debugf("Configuration file loaded: %+v", conf)
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var configValidationErr *config.ValidationError
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if errors.As(err, &configValidationErr) {
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cmd.PrintErrln(configValidationErr.LongMessage())
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}
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if err != nil {
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return err
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}
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if !c.flags.force {
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if err := validateCLIandConstellationVersionAreEqual(constants.BinaryVersion(), conf.Image, conf.MicroserviceVersion); err != nil {
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return err
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}
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}
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c.log.Debugf("Checking configuration for warnings")
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var printedAWarning bool
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if !conf.IsReleaseImage() {
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cmd.PrintErrln("Configured image doesn't look like a released production image. Double check image before deploying to production.")
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printedAWarning = true
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}
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if conf.IsNamedLikeDebugImage() && !conf.IsDebugCluster() {
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cmd.PrintErrln("WARNING: A debug image is used but debugCluster is false.")
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printedAWarning = true
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}
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if conf.IsDebugCluster() {
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cmd.PrintErrln("WARNING: Creating a debug cluster. This cluster is not secure and should only be used for debugging purposes.")
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cmd.PrintErrln("DO NOT USE THIS CLUSTER IN PRODUCTION.")
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printedAWarning = true
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}
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if conf.GetAttestationConfig().GetVariant().Equal(variant.AzureTrustedLaunch{}) {
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cmd.PrintErrln("Disabling Confidential VMs is insecure. Use only for evaluation purposes.")
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printedAWarning = true
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}
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// Print an extra new line later to separate warnings from the prompt message of the create command
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if printedAWarning {
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cmd.PrintErrln("")
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}
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provider := conf.GetProvider()
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controlPlaneGroup, ok := conf.NodeGroups[constants.DefaultControlPlaneGroupName]
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if !ok {
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return fmt.Errorf("default control-plane node group %q not found in configuration", constants.DefaultControlPlaneGroupName)
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}
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workerGroup, ok := conf.NodeGroups[constants.DefaultWorkerGroupName]
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if !ok {
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return fmt.Errorf("default worker node group %q not found in configuration", constants.DefaultWorkerGroupName)
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}
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otherGroupNames := make([]string, 0, len(conf.NodeGroups)-2)
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for groupName := range conf.NodeGroups {
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if groupName != constants.DefaultControlPlaneGroupName && groupName != constants.DefaultWorkerGroupName {
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otherGroupNames = append(otherGroupNames, groupName)
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}
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}
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if len(otherGroupNames) > 0 {
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c.log.Debugf("Creating %d additional node groups: %v", len(otherGroupNames), otherGroupNames)
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}
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if !c.flags.yes {
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// Ask user to confirm action.
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cmd.Printf("The following Constellation cluster will be created:\n")
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cmd.Printf(" %d control-plane node%s of type %s will be created.\n", controlPlaneGroup.InitialCount, isPlural(controlPlaneGroup.InitialCount), controlPlaneGroup.InstanceType)
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cmd.Printf(" %d worker node%s of type %s will be created.\n", workerGroup.InitialCount, isPlural(workerGroup.InitialCount), workerGroup.InstanceType)
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for _, groupName := range otherGroupNames {
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group := conf.NodeGroups[groupName]
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cmd.Printf(" group %s with %d node%s of type %s will be created.\n", groupName, group.InitialCount, isPlural(group.InitialCount), group.InstanceType)
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}
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ok, err := askToConfirm(cmd, "Do you want to create this cluster?")
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if err != nil {
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return err
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}
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if !ok {
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cmd.Println("The creation of the cluster was aborted.")
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return nil
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}
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}
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spinner.Start("Creating", false)
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opts := cloudcmd.CreateOptions{
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Provider: provider,
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Config: conf,
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TFLogLevel: c.flags.tfLogLevel,
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TFWorkspace: constants.TerraformWorkingDir,
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}
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infraState, err := creator.Create(cmd.Context(), opts)
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spinner.Stop()
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if err != nil {
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return translateCreateErrors(cmd, c.flags.pathPrefixer, err)
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}
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c.log.Debugf("Successfully created the cloud resources for the cluster")
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state := state.New().SetInfrastructure(infraState)
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if err := state.WriteToFile(fileHandler, constants.StateFilename); err != nil {
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return fmt.Errorf("writing state file: %w", err)
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}
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cmd.Println("Your Constellation cluster was created successfully.")
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return nil
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}
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// checkDirClean checks if files of a previous Constellation are left in the current working dir.
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func (c *createCmd) checkDirClean(fileHandler file.Handler) error {
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c.log.Debugf("Checking admin configuration file")
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if _, err := fileHandler.Stat(constants.AdminConfFilename); !errors.Is(err, fs.ErrNotExist) {
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return fmt.Errorf(
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"file '%s' already exists in working directory, run 'constellation terminate' before creating a new one",
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c.flags.pathPrefixer.PrefixPrintablePath(constants.AdminConfFilename),
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)
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}
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c.log.Debugf("Checking master secrets file")
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if _, err := fileHandler.Stat(constants.MasterSecretFilename); !errors.Is(err, fs.ErrNotExist) {
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return fmt.Errorf(
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"file '%s' already exists in working directory. Constellation won't overwrite previous master secrets. Move it somewhere or delete it before creating a new cluster",
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c.flags.pathPrefixer.PrefixPrintablePath(constants.MasterSecretFilename),
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)
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}
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c.log.Debugf("Checking state file")
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if _, err := fileHandler.Stat(constants.StateFilename); !errors.Is(err, fs.ErrNotExist) {
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return fmt.Errorf(
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"file '%s' already exists in working directory. Constellation won't overwrite previous cluster state. Move it somewhere or delete it before creating a new cluster",
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c.flags.pathPrefixer.PrefixPrintablePath(constants.StateFilename),
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)
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}
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return nil
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}
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func translateCreateErrors(cmd *cobra.Command, pf pathprefix.PathPrefixer, err error) error {
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switch {
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case errors.Is(err, terraform.ErrTerraformWorkspaceDifferentFiles):
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cmd.PrintErrln("\nYour current working directory contains an existing Terraform workspace which does not match the expected state.")
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cmd.PrintErrln("This can be due to a mix up between providers, versions or an otherwise corrupted workspace.")
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cmd.PrintErrln("Before creating a new cluster, try \"constellation terminate\".")
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cmd.PrintErrf("If this does not work, either move or delete the directory %q.\n", pf.PrefixPrintablePath(constants.TerraformWorkingDir))
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cmd.PrintErrln("Please only delete the directory if you made sure that all created cloud resources have been terminated.")
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return err
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case errors.Is(err, terraform.ErrTerraformWorkspaceExistsWithDifferentVariables):
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cmd.PrintErrln("\nYour current working directory contains an existing Terraform workspace which was initiated with different input variables.")
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cmd.PrintErrln("This can be the case if you have tried to create a cluster before with different options which did not complete, or the workspace is corrupted.")
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cmd.PrintErrln("Before creating a new cluster, try \"constellation terminate\".")
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cmd.PrintErrf("If this does not work, either move or delete the directory %q.\n", pf.PrefixPrintablePath(constants.TerraformWorkingDir))
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cmd.PrintErrln("Please only delete the directory if you made sure that all created cloud resources have been terminated.")
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return err
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default:
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return err
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}
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}
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func isPlural(count int) string {
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if count == 1 {
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return ""
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}
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return "s"
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}
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// validateCLIandConstellationVersionAreEqual checks if the image and microservice version are equal (down to patch level) to the CLI version.
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func validateCLIandConstellationVersionAreEqual(cliVersion semver.Semver, imageVersion string, microserviceVersion semver.Semver) error {
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parsedImageVersion, err := versionsapi.NewVersionFromShortPath(imageVersion, versionsapi.VersionKindImage)
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if err != nil {
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return fmt.Errorf("parsing image version: %w", err)
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}
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semImage, err := semver.New(parsedImageVersion.Version())
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if err != nil {
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return fmt.Errorf("parsing image semantical version: %w", err)
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}
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if !cliVersion.MajorMinorEqual(semImage) {
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return fmt.Errorf("image version %q does not match the major and minor version of the cli version %q", semImage.String(), cliVersion.String())
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}
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if cliVersion.Compare(microserviceVersion) != 0 {
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return fmt.Errorf("cli version %q does not match microservice version %q", cliVersion.String(), microserviceVersion.String())
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}
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return nil
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}
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