drive := endpoints.GetString(i)
		state := madmin.DriveStateCorrupt
		switch {
		case format != nil:
			state = madmin.DriveStateOk
		case sErrs[i] == errUnformattedDisk:
			state = madmin.DriveStateMissing
		case sErrs[i] == errDiskNotFound:
			state = madmin.DriveStateOffline
		}
		beforeDrives[i] = madmin.HealDriveInfo{
			UUID: func() string {
				if format != nil {

// countErrs - count a specific error.
func countErrs(errs []error, err error) int {
	i := 0
	for _, err1 := range errs {
		if err1 == err || errors.Is(err1, err) {
			i++
		}
	}
	return i
}

// Does all errors indicate we need to initialize all disks?.
func shouldInitErasureDisks(errs []error) bool {
	return countErrs(errs, errUnformattedDisk) == len(errs)
}

			errs = validation.AppendValidation(errs, fmt.Errorf("Envoy filter: missing applyTo")) // nolint: stylecheck
			continue
		}
		if cp.Patch == nil {
			errs = validation.AppendValidation(errs, fmt.Errorf("Envoy filter: missing patch")) // nolint: stylecheck
			continue
		}
		if cp.Patch.Operation == networking.EnvoyFilter_Patch_INVALID {

		errs = AppendErrors(errs, err)
	}
	if config.PathPrefix != "" {
		if _, err := url.Parse(config.PathPrefix); err != nil {
			errs = AppendErrors(errs, fmt.Errorf("invalid pathPrefix %s: %v", config.PathPrefix, err))
		}
		if !strings.HasPrefix(config.PathPrefix, "/") {
			errs = AppendErrors(errs, fmt.Errorf("pathPrefix should begin with `/` but found %q", config.PathPrefix))
		}
	}
	return
}

	var errs error
	if ls.GetAddress() == "" {
		errs = multierror.Append(errs, errors.New("address is required"))
	}
	if err := ValidateProxyAddress(ls.GetAddress()); err != nil {
		errs = multierror.Append(errs, multierror.Prefix(err, "invalid lightstep address:"))
	}
	if ls.GetAccessToken() == "" {
		errs = multierror.Append(errs, errors.New("access token is required"))
	}

	errs = AppendValidation(errs, validateHTTPDirectResponse(http.DirectResponse))
	errs = AppendValidation(errs, validateHTTPRetry(http.Retries))
	errs = AppendValidation(errs, validateHTTPRewrite(http.Rewrite))
	errs = AppendValidation(errs, validateAuthorityRewrite(http.Rewrite, http.Headers))
	errs = AppendValidation(errs, validateHTTPRouteDestinations(http.Route, gatewaySemantics))
	if http.Timeout != nil {

		}
		if err := agent.ValidatePort(port.Port); err != nil {
			errs = multierror.Append(errs,
				fmt.Errorf("invalid service port value %d for %q: %v", port.Port, port.Name, err))
		}
	}
	return errs
}

// Validate ensures that the service instance is well-defined
func (instance *ServiceInstance) Validate() error {
	var errs error
	if instance.Service == nil {

						errs = appendErrors(errs, check(len(src.Namespaces) != 0, "From.Namespaces"))
						errs = appendErrors(errs, check(len(src.NotNamespaces) != 0, "From.NotNamespaces"))
						errs = appendErrors(errs, check(len(src.Principals) != 0, "From.Principals"))
						errs = appendErrors(errs, check(len(src.NotPrincipals) != 0, "From.NotPrincipals"))

func IsConfigMapKey(value string) []string {
	var errs []string
	if len(value) > DNS1123SubdomainMaxLength {
		errs = append(errs, MaxLenError(DNS1123SubdomainMaxLength))
	}
	if !configMapKeyRegexp.MatchString(value) {
		errs = append(errs, RegexError(configMapKeyErrMsg, configMapKeyFmt, "key.name", "KEY_NAME", "key-name"))
	}
	errs = append(errs, hasChDirPrefix(value)...)
	return errs
}

	var errs []error
	if len(profile.SchedulerName) == 0 {
		errs = append(errs, field.Required(path.Child("schedulerName"), ""))
	}
	errs = append(errs, validatePercentageOfNodesToScore(path.Child("percentageOfNodesToScore"), profile.PercentageOfNodesToScore))
	errs = append(errs, validatePluginConfig(path, apiVersion, profile)...)
	return errs
}