warkanum
91811b4fa1
- install/uninstall/start/stop/enable take <name> or --all; *all kept as shortcuts - add enable (enable at boot + start); startall no longer enables - order/delay resolved by config.ResolveOrder and written into systemd, OpenRC and runit service files (After=/sleep), so they apply at boot - install --all stops and disables units before removing their files - update regenerates all installed, enabled units and removes disabled ones - edit creates the config dir; docs and man page updated - tests: fake Init for cmd, ResolveOrder, backend ordering output
113 lines
2.8 KiB
Go
113 lines
2.8 KiB
Go
package cmd
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import (
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"errors"
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"fmt"
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"io"
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"os"
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"github.com/spf13/cobra"
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"github.com/warkanum/unitdore/config"
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"github.com/warkanum/unitdore/initsys"
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)
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var (
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updateOrder int
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updateEnable bool
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updateDisable bool
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)
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var updateCmd = &cobra.Command{
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Use: "update <name>",
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Short: "Update a unit's config and recreate its service file",
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Args: cobra.ExactArgs(1),
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RunE: runUpdate,
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}
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func init() {
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updateCmd.Flags().IntVar(&updateOrder, "order", 0, "set startup order")
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updateCmd.Flags().BoolVar(&updateEnable, "enable", false, "enable the unit")
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updateCmd.Flags().BoolVar(&updateDisable, "disable", false, "disable the unit")
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rootCmd.AddCommand(updateCmd)
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}
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func runUpdate(cmd *cobra.Command, args []string) error {
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if updateEnable && updateDisable {
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return errors.New("--enable and --disable are mutually exclusive")
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}
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cfg, err := config.Load(configPath)
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if err != nil {
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return err
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}
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ini, err := initsys.New(cfg)
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if err != nil {
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return err
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}
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var order *int
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if cmd.Flags().Changed("order") {
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order = &updateOrder
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}
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return applyUpdate(cfg, ini, args[0], order, updateEnable, updateDisable, configPath, os.Stdout)
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}
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// applyUpdate changes a unit's config, saves it and brings the installed
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// service file in line: re-created if enabled, stopped and removed if disabled.
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func applyUpdate(cfg *config.Config, ini initsys.Init, name string, order *int, enable, disable bool, path string, w io.Writer) error {
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u := cfg.FindUnit(name)
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if u == nil {
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return fmt.Errorf("unit %q not found", name)
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}
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if order != nil {
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u.Order = *order
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fmt.Fprintf(w, " order → %d\n", u.Order)
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}
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if enable {
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u.Enabled = true
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u.DisabledReason = ""
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fmt.Fprintf(w, " enabled\n")
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}
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if disable {
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u.Enabled = false
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fmt.Fprintf(w, " disabled\n")
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}
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if err := cfg.ResolveOrder(); err != nil {
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return err
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}
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if err := cfg.Save(path); err != nil {
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return err
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}
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prefix, suffix := cfg.Prefix, cfg.Suffix
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// The target is stopped and removed if now disabled
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if ini.IsInstalled(*u, prefix, suffix) && !u.Enabled {
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svcPath, _ := ini.UnitPath(*u, prefix, suffix)
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if err := ini.Disable(*u, prefix, suffix); err != nil {
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return fmt.Errorf("disabling unit: %w", err)
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}
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if err := ini.Uninstall(*u, prefix, suffix); err != nil {
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return fmt.Errorf("removing service file: %w", err)
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}
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fmt.Fprintf(w, " ✓ service stopped and removed: %s\n", svcPath)
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}
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// Order and enabled state change the After=/delay of other units too, so
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// every installed, enabled unit is regenerated
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for i := range cfg.Units {
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o := cfg.Units[i]
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if !o.Enabled || !ini.IsInstalled(o, prefix, suffix) {
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continue
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}
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if err := ini.Install(o, prefix, suffix); err != nil {
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return fmt.Errorf("recreating service file for %s: %w", o.Name, err)
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}
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svcPath, _ := ini.UnitPath(o, prefix, suffix)
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fmt.Fprintf(w, " ✓ service file recreated: %s\n", svcPath)
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}
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return nil
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}
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