Function updatePlacementPreferences

cli/command/service/update.go:643–669

(flags *pflag.FlagSet, placement *swarm.Placement)

}

func updatePlacementPreferences(flags *pflag.FlagSet, placement *swarm.Placement) {
	var newPrefs []swarm.PlacementPreference

	if flags.Changed(flagPlacementPrefRemove) {
		for _, existing := range placement.Preferences {
			removed := false
			for _, removal := range flags.Lookup(flagPlacementPrefRemove).Value.(*placementPrefOpts).prefs {
				if removal.Spread != nil && existing.Spread != nil && removal.Spread.SpreadDescriptor == existing.Spread.SpreadDescriptor {
					removed = true
					break
				}
			}
			if !removed {
				newPrefs = append(newPrefs, existing)
			}
		}
	} else {
		newPrefs = placement.Preferences
	}

	if flags.Changed(flagPlacementPrefAdd) {
		newPrefs = append(newPrefs,
			flags.Lookup(flagPlacementPrefAdd).Value.(*placementPrefOpts).prefs...)
	}

	placement.Preferences = newPrefs
}

func updateContainerLabels(flags *pflag.FlagSet, field *map[string]string) {
	if *field != nil && flags.Changed(flagContainerLabelRemove) {