mirror of
https://github.com/edgelesssys/constellation.git
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124 lines
3.5 KiB
Go
124 lines
3.5 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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"fmt"
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"github.com/edgelesssys/constellation/v2/internal/cloud/cloudprovider"
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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/siderolabs/talos/pkg/machinery/config/encoder"
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"github.com/spf13/afero"
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"github.com/spf13/cobra"
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)
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func newConfigGenerateCmd() *cobra.Command {
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cmd := &cobra.Command{
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Use: "generate {aws|azure|gcp|qemu}",
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Short: "Generate a default configuration file",
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Long: "Generate a default configuration file for your selected cloud provider.",
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Args: cobra.MatchAll(
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cobra.ExactArgs(1),
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isCloudProvider(0),
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),
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ValidArgsFunction: generateCompletion,
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RunE: runConfigGenerate,
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}
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cmd.Flags().StringP("file", "f", constants.ConfigFilename, "path to output file, or '-' for stdout")
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return cmd
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}
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type generateFlags struct {
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file string
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}
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type configGenerateCmd struct {
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log debugLog
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}
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func runConfigGenerate(cmd *cobra.Command, args []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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fileHandler := file.NewHandler(afero.NewOsFs())
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provider := cloudprovider.FromString(args[0])
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cg := &configGenerateCmd{log: log}
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return cg.configGenerate(cmd, fileHandler, provider)
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}
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func (cg *configGenerateCmd) configGenerate(cmd *cobra.Command, fileHandler file.Handler, provider cloudprovider.Provider) error {
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flags, err := parseGenerateFlags(cmd)
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if err != nil {
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return err
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}
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cg.log.Debugf("Parsed flags as %v", flags)
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cg.log.Debugf("Using cloud provider %s", provider.String())
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conf := createConfig(provider)
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if flags.file == "-" {
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content, err := encoder.NewEncoder(conf).Encode()
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if err != nil {
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return fmt.Errorf("encoding config content: %w", err)
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}
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cg.log.Debugf("Writing YAML data to stdout")
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_, err = cmd.OutOrStdout().Write(content)
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return err
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}
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cg.log.Debugf("Writing YAML data to configuration file")
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if err := fileHandler.WriteYAML(flags.file, conf, file.OptMkdirAll); err != nil {
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return err
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}
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cmd.Println("Config file written to", flags.file)
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cmd.Println("Please fill in your CSP-specific configuration before proceeding.")
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cmd.Println("For more information refer to the documentation:")
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cmd.Println("\thttps://docs.edgeless.systems/constellation/getting-started/first-steps")
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return nil
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}
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// createConfig creates a config file for the given provider.
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func createConfig(provider cloudprovider.Provider) *config.Config {
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conf := config.Default()
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conf.RemoveProviderExcept(provider)
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// set a lower default for QEMU's state disk
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if provider == cloudprovider.QEMU {
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conf.StateDiskSizeGB = 10
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}
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return conf
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}
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func parseGenerateFlags(cmd *cobra.Command) (generateFlags, error) {
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file, err := cmd.Flags().GetString("file")
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if err != nil {
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return generateFlags{}, fmt.Errorf("parsing config generate flags: %w", err)
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}
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return generateFlags{
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file: file,
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}, nil
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}
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// createCompletion handles the completion of the create command. It is frequently called
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// while the user types arguments of the command to suggest completion.
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func generateCompletion(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
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switch len(args) {
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case 0:
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return []string{"aws", "gcp", "azure", "qemu"}, cobra.ShellCompDirectiveNoFileComp
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default:
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return []string{}, cobra.ShellCompDirectiveError
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}
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}
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