func joinMountOptions()

in pkg/csi_driver/utils.go [136:176]

32 lines of code
8 McCabe index (conditional complexity)


func joinMountOptions(existingOptions []string, newOptions []string) []string {
	overwritableOptions := map[string]string{
		"gid":       "",
		"file-mode": "",
		"dir-mode":  "",
	}

	allMountOptions := sets.NewString()

	process := func(mountOption string) {
		if len(mountOption) > 0 {
			optionPair := strings.SplitN(mountOption, "=", 2)

			if len(optionPair) == 2 {
				if _, ok := overwritableOptions[optionPair[0]]; ok {
					overwritableOptions[optionPair[0]] = optionPair[1]

					return
				}
			}

			allMountOptions.Insert(mountOption)
		}
	}

	for _, mountOption := range existingOptions {
		process(mountOption)
	}

	for _, mountOption := range newOptions {
		process(mountOption)
	}

	for k, v := range overwritableOptions {
		if v != "" {
			allMountOptions.Insert(k + "=" + v)
		}
	}

	return allMountOptions.List()
}