Example #1
0
File: run.go Project: matomesc/rkt
// generatePodManifest creates the pod manifest from the command line input.
// It returns the pod manifest as []byte on success.
// This is invoked if no pod manifest is specified at the command line.
func generatePodManifest(cfg PrepareConfig, dir string) ([]byte, error) {
	pm := schema.PodManifest{
		ACKind: "PodManifest",
		Apps:   make(schema.AppList, 0),
	}

	v, err := types.NewSemVer(version.Version)
	if err != nil {
		return nil, fmt.Errorf("error creating version: %v", err)
	}
	pm.ACVersion = *v

	if err := cfg.Apps.Walk(func(app *apps.App) error {
		img := app.ImageID

		am, err := cfg.Store.GetImageManifest(img.String())
		if err != nil {
			return fmt.Errorf("error getting the manifest: %v", err)
		}
		appName, err := imageNameToAppName(am.Name)
		if err != nil {
			return fmt.Errorf("error converting image name to app name: %v", err)
		}
		if err := prepareAppImage(cfg, *appName, img, dir, cfg.UseOverlay); err != nil {
			return fmt.Errorf("error setting up image %s: %v", img, err)
		}
		if pm.Apps.Get(*appName) != nil {
			return fmt.Errorf("error: multiple apps with name %s", am.Name)
		}
		if am.App == nil && app.Exec == "" {
			return fmt.Errorf("error: image %s has no app section and --exec argument is not provided", img)
		}
		ra := schema.RuntimeApp{
			// TODO(vc): leverage RuntimeApp.Name for disambiguating the apps
			Name: *appName,
			App:  am.App,
			Image: schema.RuntimeImage{
				Name:   &am.Name,
				ID:     img,
				Labels: am.Labels,
			},
			Annotations: am.Annotations,
			Mounts:      MergeMounts(cfg.Apps.Mounts, app.Mounts),
		}

		if execOverride := app.Exec; execOverride != "" {
			// Create a minimal App section if not present
			if am.App == nil {
				ra.App = &types.App{
					User:  strconv.Itoa(os.Getuid()),
					Group: strconv.Itoa(os.Getgid()),
				}
			}
			ra.App.Exec = []string{execOverride}
		}

		if execAppends := app.Args; execAppends != nil {
			ra.App.Exec = append(ra.App.Exec, execAppends...)
		}

		if memoryOverride := app.MemoryLimit; memoryOverride != nil {
			isolator := memoryOverride.AsIsolator()
			ra.App.Isolators = append(ra.App.Isolators, isolator)
		}

		if cpuOverride := app.CPULimit; cpuOverride != nil {
			isolator := cpuOverride.AsIsolator()
			ra.App.Isolators = append(ra.App.Isolators, isolator)
		}

		if cfg.InheritEnv || len(cfg.ExplicitEnv) > 0 {
			MergeEnvs(&ra.App.Environment, cfg.InheritEnv, cfg.ExplicitEnv)
		}
		pm.Apps = append(pm.Apps, ra)
		return nil
	}); err != nil {
		return nil, err
	}

	// TODO(jonboulle): check that app mountpoint expectations are
	// satisfied here, rather than waiting for stage1
	pm.Volumes = cfg.Apps.Volumes
	pm.Ports = cfg.Ports

	pmb, err := json.Marshal(pm)
	if err != nil {
		return nil, fmt.Errorf("error marshalling pod manifest: %v", err)
	}
	return pmb, nil
}
Example #2
0
// generatePodManifest creates the pod manifest from the command line input.
// It returns the pod manifest as []byte on success.
// This is invoked if no pod manifest is specified at the command line.
func generatePodManifest(cfg PrepareConfig, dir string) ([]byte, error) {
	pm := schema.PodManifest{
		ACKind: "PodManifest",
		Apps:   make(schema.AppList, 0),
	}

	v, err := types.NewSemVer(version.Version)
	if err != nil {
		return nil, fmt.Errorf("error creating version: %v", err)
	}
	pm.ACVersion = *v

	if err := cfg.Apps.Walk(func(app *apps.App) error {
		img := app.ImageID
		am, err := prepareAppImage(cfg, img, dir, cfg.UseOverlay)
		if err != nil {
			return fmt.Errorf("error setting up image %s: %v", img, err)
		}
		if pm.Apps.Get(am.Name) != nil {
			return fmt.Errorf("error: multiple apps with name %s", am.Name)
		}
		if am.App == nil {
			return fmt.Errorf("error: image %s has no app section", img)
		}
		ra := schema.RuntimeApp{
			// TODO(vc): leverage RuntimeApp.Name for disambiguating the apps
			Name: am.Name,
			Image: schema.RuntimeImage{
				Name: &am.Name,
				ID:   img,
			},
			Annotations: am.Annotations,
		}

		if execAppends := app.Args; execAppends != nil {
			ra.App = am.App
			ra.App.Exec = append(ra.App.Exec, execAppends...)
		}

		if cfg.InheritEnv || len(cfg.ExplicitEnv) > 0 {
			if ra.App == nil {
				ra.App = am.App
			}
			MergeEnvs(&ra.App.Environment, cfg.InheritEnv, cfg.ExplicitEnv)
		}
		pm.Apps = append(pm.Apps, ra)
		return nil
	}); err != nil {
		return nil, err
	}

	// TODO(jonboulle): check that app mountpoint expectations are
	// satisfied here, rather than waiting for stage1
	pm.Volumes = cfg.Volumes
	pm.Ports = cfg.Ports

	pmb, err := json.Marshal(pm)
	if err != nil {
		return nil, fmt.Errorf("error marshalling pod manifest: %v", err)
	}
	return pmb, nil
}