func OpenShiftConsoleDownloadLink()

in pkg/install/openshift.go [59:150]
77 lines of code
15 McCabe index (conditional complexity)

func OpenShiftConsoleDownloadLink(ctx context.Context, c client.Client) error {
	// Check the ConsoleCLIDownload CRD is present, which should be starting OpenShift version 4.2.
	// That check is also enough to exclude Kubernetes clusters.
	ok, err := kubernetes.IsAPIResourceInstalled(c, "console.openshift.io/v1", reflect.TypeOf(console.ConsoleCLIDownload{}).Name())
	if err != nil {
		return err
	} else if !ok {
		return nil
	}

	// Check for permission to create the ConsoleCLIDownload resource
	ok, err = kubernetes.CheckPermission(ctx, c, console.GroupName, "consoleclidownloads", "", KamelCLIDownloadName, "create")
	if err != nil {
		return err
	}
	if !ok {
		// Let's just skip the ConsoleCLIDownload resource creation
		return nil
	}

	// Check for an existing ConsoleCLIDownload resource
	existing := &console.ConsoleCLIDownload{}
	err = c.Get(ctx, types.NamespacedName{Name: KamelCLIDownloadName}, existing)
	if err != nil {
		if k8serrors.IsNotFound(err) {
			existing = nil
		} else {
			return err
		}
	}

	if existing != nil {
		if version, ok := existing.Annotations[kamelVersionAnnotation]; ok {
			current, err := semver.NewVersion(version)
			if err != nil {
				return err
			}
			this, err := semver.NewVersion(defaults.Version)
			if err != nil {
				return err
			}
			if this.LessThan(current) {
				// Keep the most recent version
				return nil
			}
			// Else delete the older version
			err = c.Delete(ctx, existing)
			if err != nil {
				if k8serrors.IsForbidden(err) {
					// Let's just skip the ConsoleCLIDownload resource creation
					return nil
				}
				return err
			}
		}
	}

	// Create the ConsoleCLIDownload for Kamel CLI
	link := console.ConsoleCLIDownload{
		ObjectMeta: metav1.ObjectMeta{
			Annotations: map[string]string{
				kamelVersionAnnotation: defaults.Version,
			},
			Name: KamelCLIDownloadName,
		},
		Spec: console.ConsoleCLIDownloadSpec{
			DisplayName: KamelCLIDownloadDisplayName,
			Description: KamelCLIDownloadDescription,
			Links: []console.Link{
				{
					Text: "Download the kamel binary for Linux",
					Href: fmt.Sprintf(KamelCLIDownloadURLTemplate, defaults.Version, defaults.Version, "linux"),
				},
				{
					Text: "Download the kamel binary for Mac",
					Href: fmt.Sprintf(KamelCLIDownloadURLTemplate, defaults.Version, defaults.Version, "mac"),
				},
				{
					Text: "Download the kamel binary for Windows",
					Href: fmt.Sprintf(KamelCLIDownloadURLTemplate, defaults.Version, defaults.Version, "windows"),
				},
			},
		},
	}

	err = c.Create(ctx, &link)
	if err != nil {
		return err
	}

	return nil
}