Golang Time.IsZero方法代码示例

func printImageStream(stream *imageapi.ImageStream, w io.Writer, withNamespace, wide bool, columnLabels []string) error {
	tags := ""
	set := util.NewStringSet()
	var latest util.Time
	for tag, list := range stream.Status.Tags {
		set.Insert(tag)
		if len(list.Items) > 0 {
			if list.Items[0].Created.After(latest.Time) {
				latest = list.Items[0].Created
			}
		}
	}
	latestTime := ""
	if !latest.IsZero() {
		latestTime = fmt.Sprintf("%s ago", formatRelativeTime(latest.Time))
	}
	tags = strings.Join(set.List(), ",")
	if withNamespace {
		if _, err := fmt.Fprintf(w, "%s\t", stream.Namespace); err != nil {
			return err
		}
	}
	_, err := fmt.Fprintf(w, "%s\t%s\t%s\t%s\n", stream.Name, stream.Status.DockerImageRepository, tags, latestTime)
	return err
}

func printImageStream(stream *imageapi.ImageStream, w io.Writer, withNamespace, wide bool, columnLabels []string) error {
	tags := ""
	const numOfTagsShown = 3

	var latest util.Time
	for _, list := range stream.Status.Tags {
		if len(list.Items) > 0 {
			if list.Items[0].Created.After(latest.Time) {
				latest = list.Items[0].Created
			}
		}
	}
	latestTime := ""
	if !latest.IsZero() {
		latestTime = fmt.Sprintf("%s ago", formatRelativeTime(latest.Time))
	}
	list := imageapi.SortStatusTags(stream.Status.Tags)
	more := false
	if len(list) > numOfTagsShown {
		list = list[:numOfTagsShown]
		more = true
	}
	tags = strings.Join(list, ",")
	if more {
		tags = fmt.Sprintf("%s + %d more...", tags, len(stream.Status.Tags)-numOfTagsShown)
	}
	if withNamespace {
		if _, err := fmt.Fprintf(w, "%s\t", stream.Namespace); err != nil {
			return err
		}
	}
	_, err := fmt.Fprintf(w, "%s\t%s\t%s\t%s\n", stream.Name, stream.Status.DockerImageRepository, tags, latestTime)
	return err
}

func describeBuildPhase(build *buildapi.Build, t *util.Time, parentName string, pushTargetResolved bool) string {
	imageStreamFailure := ""
	// if we're using an image stream and that image stream is the internal registry and that registry doesn't exist
	if (build.Spec.Output.To != nil) && !pushTargetResolved {
		imageStreamFailure = " (can't push to image)"
	}

	if t == nil {
		ts := buildTimestamp(build)
		t = &ts
	}
	var time string
	if t.IsZero() {
		time = "<unknown>"
	} else {
		time = strings.ToLower(formatRelativeTime(t.Time))
	}
	buildIdentification := fmt.Sprintf("build/%s", build.Name)
	prefix := parentName + "-"
	if strings.HasPrefix(build.Name, prefix) {
		suffix := build.Name[len(prefix):]

		if buildNumber, err := strconv.Atoi(suffix); err == nil {
			buildIdentification = fmt.Sprintf("#%d build", buildNumber)
		}
	}

	revision := describeSourceRevision(build.Spec.Revision)
	if len(revision) != 0 {
		revision = fmt.Sprintf(" - %s", revision)
	}
	switch build.Status.Phase {
	case buildapi.BuildPhaseComplete:
		return fmt.Sprintf("%s succeeded %s ago%s%s", buildIdentification, time, revision, imageStreamFailure)
	case buildapi.BuildPhaseError:
		return fmt.Sprintf("%s stopped with an error %s ago%s%s", buildIdentification, time, revision, imageStreamFailure)
	case buildapi.BuildPhaseFailed:
		return fmt.Sprintf("%s failed %s ago%s%s", buildIdentification, time, revision, imageStreamFailure)
	default:
		status := strings.ToLower(string(build.Status.Phase))
		return fmt.Sprintf("%s %s for %s%s%s", buildIdentification, status, time, revision, imageStreamFailure)
	}
}

// translateTimestamp returns the elapsed time since timestamp in
// human-readable approximation.
func translateTimestamp(timestamp util.Time) string {
	if timestamp.IsZero() {
		return "<unknown>"
	}
	return shortHumanDuration(time.Now().Sub(timestamp.Time))
}