package stack import ( "fmt" "github.com/docker/cli/cli" "github.com/docker/cli/cli/command" "github.com/docker/cli/cli/command/completion" "github.com/docker/cli/cli/command/stack/loader" "github.com/docker/cli/cli/command/stack/options" composeLoader "github.com/docker/cli/cli/compose/loader" composetypes "github.com/docker/cli/cli/compose/types" "github.com/spf13/cobra" yaml "gopkg.in/yaml.v2" ) func newConfigCommand(dockerCli command.Cli) *cobra.Command { var opts options.Config cmd := &cobra.Command{ Use: "config [OPTIONS]", Short: "Outputs the final config file, after doing merges and interpolations", Args: cli.NoArgs, RunE: func(cmd *cobra.Command, args []string) error { configDetails, err := loader.GetConfigDetails(opts.Composefiles, dockerCli.In()) if err != nil { return err } cfg, err := outputConfig(configDetails, opts.SkipInterpolation) if err != nil { return err } _, err = fmt.Fprintf(dockerCli.Out(), "%s", cfg) return err }, ValidArgsFunction: completion.NoComplete, } flags := cmd.Flags() flags.StringSliceVarP(&opts.Composefiles, "compose-file", "c", []string{}, `Path to a Compose file, or "-" to read from stdin`) flags.BoolVar(&opts.SkipInterpolation, "skip-interpolation", false, "Skip interpolation and output only merged config") return cmd } // outputConfig returns the merged and interpolated config file func outputConfig(configFiles composetypes.ConfigDetails, skipInterpolation bool) (string, error) { optsFunc := func(options *composeLoader.Options) { options.SkipInterpolation = skipInterpolation } config, err := composeLoader.Load(configFiles, optsFunc) if err != nil { return "", err } d, err := yaml.Marshal(&config) if err != nil { return "", err } return string(d), nil }