Markus Pesch
9705b468fa
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115 lines
3.2 KiB
Go
115 lines
3.2 KiB
Go
package cmd
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import (
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"fmt"
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"os"
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"path/filepath"
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"git.cryptic.systems/volker.raschek/dcmerge/pkg/domain/dockerCompose"
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"git.cryptic.systems/volker.raschek/dcmerge/pkg/fetcher"
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"github.com/spf13/cobra"
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"gopkg.in/yaml.v3"
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)
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func Execute(version string) error {
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completionCmd := &cobra.Command{
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Use: "completion [bash|zsh|fish|powershell]",
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Short: "Generate completion script",
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Long: "To load completions",
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DisableFlagsInUseLine: true,
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ValidArgs: []string{"bash", "zsh", "fish", "powershell"},
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Args: cobra.MatchAll(cobra.ExactArgs(1)),
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RunE: func(cmd *cobra.Command, args []string) error {
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switch args[0] {
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case "bash":
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return cmd.Root().GenBashCompletion(os.Stdout)
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case "zsh":
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return cmd.Root().GenZshCompletion(os.Stdout)
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case "fish":
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return cmd.Root().GenFishCompletion(os.Stdout, true)
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case "powershell":
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return cmd.Root().GenPowerShellCompletionWithDesc(os.Stdout)
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default:
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return fmt.Errorf("unknown shell: %v", args[0])
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}
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},
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}
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rootCmd := &cobra.Command{
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Use: "dcmerge",
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Args: cobra.MinimumNArgs(1),
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Short: "Merge docker-compose files from multiple resources",
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Example: `dcmerge docker-compose.yml ./integration-test/docker-compose.yml
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dcmerge docker-compose.yml https://git.example.local/user/repo/docker-compose.yml`,
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RunE: run,
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Version: version,
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}
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rootCmd.Flags().BoolP("existing-win", "f", false, "Protect existing attributes")
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rootCmd.Flags().BoolP("last-win", "l", false, "Overwrite existing attributes")
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rootCmd.Flags().StringP("output-file", "o", "", "Write instead on stdout into a file")
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rootCmd.AddCommand(completionCmd)
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return rootCmd.Execute()
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}
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func run(cmd *cobra.Command, args []string) error {
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mergeExisting, err := cmd.Flags().GetBool("existing-win")
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if err != nil {
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return fmt.Errorf("failed to parse flag last-win: %s", err)
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}
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mergeLastWin, err := cmd.Flags().GetBool("last-win")
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if err != nil {
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return fmt.Errorf("failed to parse flag last-win: %s", err)
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}
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outputFile, err := cmd.Flags().GetString("output-file")
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if err != nil {
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return fmt.Errorf("failed to parse flag output-file: %s", err)
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}
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dockerComposeConfig := dockerCompose.NewConfig()
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dockerComposeConfigs, err := fetcher.Fetch(args...)
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if err != nil {
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return err
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}
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for _, config := range dockerComposeConfigs {
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switch {
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case mergeExisting && mergeLastWin:
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return fmt.Errorf("neither --first-win or --last-win can be specified - not booth")
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case mergeExisting && !mergeLastWin:
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dockerComposeConfig.MergeExistingWin(config)
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case !mergeExisting && mergeLastWin:
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dockerComposeConfig.MergeLastWin(config)
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default:
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dockerComposeConfig.Merge(config)
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}
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}
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switch {
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case len(outputFile) > 0:
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err = os.MkdirAll(filepath.Dir(outputFile), 0755)
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if err != nil {
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return err
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}
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f, err := os.Create(outputFile)
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if err != nil {
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return err
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}
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defer func() { _ = f.Close() }()
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yamlEncoder := yaml.NewEncoder(f)
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yamlEncoder.SetIndent(2)
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return yamlEncoder.Encode(dockerComposeConfig)
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default:
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yamlEncoder := yaml.NewEncoder(os.Stdout)
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yamlEncoder.SetIndent(2)
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return yamlEncoder.Encode(dockerComposeConfig)
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}
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}
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