func ValidateLoggingConfiguration()

in logs/validate.go [30:70]
34 lines of code
13 McCabe index (conditional complexity)

func ValidateLoggingConfiguration(c *config.LoggingConfiguration, fldPath *field.Path) field.ErrorList {
	errs := field.ErrorList{}
	if c.Format != DefaultLogFormat {
		// WordSepNormalizeFunc is just a guess. Commands should use it,
		// but we cannot know for sure.
		allFlags := UnsupportedLoggingFlags(cliflag.WordSepNormalizeFunc)
		for _, f := range allFlags {
			if f.DefValue != f.Value.String() {
				errs = append(errs, field.Invalid(fldPath.Child("format"), c.Format, fmt.Sprintf("Non-default format doesn't honor flag: %s", f.Name)))
			}
		}
	}
	_, err := registry.LogRegistry.Get(c.Format)
	if err != nil {
		errs = append(errs, field.Invalid(fldPath.Child("format"), c.Format, "Unsupported log format"))
	}

	// The type in our struct is uint32, but klog only accepts positive int32.
	if c.Verbosity > math.MaxInt32 {
		errs = append(errs, field.Invalid(fldPath.Child("verbosity"), c.Verbosity, fmt.Sprintf("Must be <= %d", math.MaxInt32)))
	}
	vmoduleFldPath := fldPath.Child("vmodule")
	if len(c.VModule) > 0 && c.Format != "" && c.Format != "text" {
		errs = append(errs, field.Forbidden(vmoduleFldPath, "Only supported for text log format"))
	}
	for i, item := range c.VModule {
		if item.FilePattern == "" {
			errs = append(errs, field.Required(vmoduleFldPath.Index(i), "File pattern must not be empty"))
		}
		if strings.ContainsAny(item.FilePattern, "=,") {
			errs = append(errs, field.Invalid(vmoduleFldPath.Index(i), item.FilePattern, "File pattern must not contain equal sign or comma"))
		}
		if item.Verbosity > math.MaxInt32 {
			errs = append(errs, field.Invalid(vmoduleFldPath.Index(i), item.Verbosity, fmt.Sprintf("Must be <= %d", math.MaxInt32)))
		}
	}

	// Currently nothing to validate for c.Options.

	return errs
}