}

// isKlogVerbose returns true if klog verbosity is non-zero.
func klogVerbose() bool {
	gf := klogVerboseFlag()
	return gf.Value.String() != "0"
}

var (
	klogFlagSet     = &goflag.FlagSet{}
	klogFlagSetOnce = sync.Once{}
)

// KlogVerboseFlag returns verbose flag from the klog library.
// After parsing it contains the parsed verbosity value.
func klogVerboseFlag() *goflag.Flag {

        outputDoesNotContain("DEBUG message")
        outputDoesNotContain("VERBOSE message")
    }

    @ToBeFixedForConfigurationCache(skip = INVESTIGATE)
    def "can increase verbosity of Ant logging" () {
        buildFile << """
            ant.lifecycleLogLevel = "INFO"
        """

        when:
        succeeds("antTest")

        then:
        outputContains("[ant:echo] INFO message")

// logging is based on Verbosity levels, where 0 is the most important. We treat
// levels 0-3 as info level and 4+ as debug; there are no warnings. This
// threshold is fairly arbitrary based on inspection of Kubernetes usage and
// https://kubernetes.io/docs/reference/kubectl/cheatsheet/#kubectl-output-verbosity-and-debugging.
// Errors are passed through as errors.

// the default value for int, zero.
//
// Second, we wanted to make it easy to use levels to specify logger verbosity.
// Since a larger level means a more severe event, a logger that accepts events
// with smaller (or more negative) level means a more verbose logger. Logger
// verbosity is thus the negation of event severity, and the default verbosity
// of 0 accepts all events at least as severe as INFO.
//

func checkErr(err error, handleErr func(string, int)) {
	if err == nil {
		return
	}

	msg := fmt.Sprintf("%s\nTo see the stack trace of this error execute with --v=5 or higher", err.Error())
	// check if the verbosity level in klog is high enough and print a stack trace.
	f := flag.CommandLine.Lookup("v")
	if f != nil {
		// assume that the "v" flag contains a parseable Int32 as per klog's "Level" type alias,

  format: json
  flushFrequency: 1s
  verbosity: 10
  vmodule:
  - filePattern: foo.go
    verbosity: 6
  - filePattern: bar.go
    verbosity: 8
`
	expectedLoggingConfig := logsapi.LoggingConfiguration{
		Format:         "json",
		FlushFrequency: logsapi.TimeOrMetaDuration{Duration: metav1.Duration{Duration: time.Second}, SerializeAsString: true},
		Verbosity:      10,
		VModule: []logsapi.VModuleItem{
			{

  tcpTimeout: 0s
  udpTimeout: 0s
kind: KubeProxyConfiguration
logging:
  flushFrequency: 5s
  format: text
  options:
    json:
      infoBufferSize: "0"
    text:
      infoBufferSize: "0"
  verbosity: 0
metricsBindAddress: 127.0.0.1:10249
mode: ""
nftables:
  masqueradeAll: false
  masqueradeBit: 14
  minSyncPeriod: 1s
  syncPeriod: 30s
nodePortAddresses: null
oomScoreAdj: -999
portRange: ""

  tcpTimeout: 0s
  udpTimeout: 0s
kind: KubeProxyConfiguration
logging:
  flushFrequency: 5s
  format: text
  options:
    json:
      infoBufferSize: "0"
    text:
      infoBufferSize: "0"
  verbosity: 0
metricsBindAddress: 127.0.0.1:10249
mode: ""
nftables:
  masqueradeAll: false
  masqueradeBit: 14
  minSyncPeriod: 1s
  syncPeriod: 30s
nodePortAddresses: null
oomScoreAdj: -999
portRange: ""

kubeAPIBurst: 100
kubeAPIQPS: 50
localStorageCapacityIsolation: true
logging:
  flushFrequency: 5s
  format: text
  options:
    json:
      infoBufferSize: "0"
    text:
      infoBufferSize: "0"
  verbosity: 0
makeIPTablesUtilChains: true
maxOpenFiles: 1000000
maxPods: 110
memoryManagerPolicy: None
memorySwap: {}
memoryThrottlingFactor: 0.9
nodeLeaseDurationSeconds: 40
nodeStatusMaxImages: 50

			l.Info("msg")
			l.Error(errors.New("some error"), "msg")
		})
		mustMatchLength(t, 1, lines)
		mustRegexMatchString(t, lines[0], "some error.*msg")
	})

	t.Run("info shows correct verbosity", func(t *testing.T) {
		lines := runLogrTest(t, func(l logr.Logger) {
			l.V(0).Info("0")
			l.V(1).Info("1")
			l.V(2).Info("2")
			l.V(3).Info("3")
			l.V(4).Info("4")