// 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, errwrap.Wrap(errors.New("error creating version"), 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 errwrap.Wrap(errors.New("error getting the manifest"), err)
}
appName, err := imageNameToAppName(am.Name)
if err != nil {
return errwrap.Wrap(errors.New("error converting image name to app name"), err)
}
if err := prepareAppImage(cfg, *appName, img, dir, cfg.UseOverlay); err != nil {
return errwrap.Wrap(fmt.Errorf("error setting up image %s", 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, errwrap.Wrap(errors.New("error marshalling pod manifest"), err)
}
return pmb, nil
}
// 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, errwrap.Wrap(errors.New("error creating version"), 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 errwrap.Wrap(errors.New("error getting the manifest"), err)
}
appName, err := imageNameToAppName(am.Name)
if err != nil {
return errwrap.Wrap(errors.New("error converting image name to app name"), err)
}
if err := prepareAppImage(cfg, *appName, img, dir, cfg.UseOverlay); err != nil {
return errwrap.Wrap(fmt.Errorf("error setting up image %s", 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 app.CapsRetain != nil && app.CapsRemove != nil {
return fmt.Errorf("error: cannot use both --cap-retain and --cap-remove on the same image")
}
// Delete existing caps isolators if the user wants to override
// them with either --cap-retain or --cap-remove
if app.CapsRetain != nil || app.CapsRemove != nil {
for i := len(ra.App.Isolators) - 1; i >= 0; i-- {
isolator := ra.App.Isolators[i]
if _, ok := isolator.Value().(types.LinuxCapabilitiesSet); ok {
ra.App.Isolators = append(ra.App.Isolators[:i],
ra.App.Isolators[i+1:]...)
}
}
}
if capsRetain := app.CapsRetain; capsRetain != nil {
isolator, err := capsRetain.AsIsolator()
if err != nil {
return err
}
ra.App.Isolators = append(ra.App.Isolators, *isolator)
} else if capsRemove := app.CapsRemove; capsRemove != nil {
isolator, err := capsRemove.AsIsolator()
if err != nil {
return err
}
ra.App.Isolators = append(ra.App.Isolators, *isolator)
}
if user := app.User; user != "" {
ra.App.User = user
}
if group := app.Group; group != "" {
ra.App.Group = group
}
// loading the environment from the lowest priority to highest
if cfg.InheritEnv {
// Inherit environment does not override app image environment
mergeEnvs(&ra.App.Environment, os.Environ(), false)
}
mergeEnvs(&ra.App.Environment, cfg.EnvFromFile, true)
mergeEnvs(&ra.App.Environment, cfg.ExplicitEnv, true)
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, errwrap.Wrap(errors.New("error marshalling pod manifest"), err)
}
return pmb, nil
}
// 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, errwrap.Wrap(errors.New("error creating version"), 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 errwrap.Wrap(errors.New("error getting the manifest"), err)
}
var appName *types.ACName
if app.Name != "" {
appName, err = types.NewACName(app.Name)
if err != nil {
return errwrap.Wrap(errors.New("invalid app name format"), err)
}
} else {
appName, err = imageNameToAppName(am.Name)
if err != nil {
return errwrap.Wrap(errors.New("error converting image name to app name"), err)
}
}
if _, err := prepareAppImage(cfg, *appName, img, dir, cfg.UseOverlay); err != nil {
return errwrap.Wrap(fmt.Errorf("error preparing image %s", 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,
},
Mounts: MergeMounts(cfg.Apps.Mounts, app.Mounts),
ReadOnlyRootFS: app.ReadOnlyRootFS,
}
if app.Exec != "" {
// 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{app.Exec}
}
if app.Args != nil {
ra.App.Exec = append(ra.App.Exec, app.Args...)
}
if app.WorkingDir != "" {
ra.App.WorkingDirectory = app.WorkingDir
}
if err := prepareIsolators(app, ra.App); err != nil {
return err
}
if app.User != "" {
ra.App.User = app.User
}
if app.Group != "" {
ra.App.Group = app.Group
}
if app.SupplementaryGIDs != nil {
ra.App.SupplementaryGIDs = app.SupplementaryGIDs
}
if app.UserAnnotations != nil {
ra.App.UserAnnotations = app.UserAnnotations
}
if app.UserLabels != nil {
ra.App.UserLabels = app.UserLabels
}
// loading the environment from the lowest priority to highest
if cfg.InheritEnv {
// Inherit environment does not override app image environment
mergeEnvs(&ra.App.Environment, os.Environ(), false)
}
mergeEnvs(&ra.App.Environment, cfg.EnvFromFile, true)
mergeEnvs(&ra.App.Environment, cfg.ExplicitEnv, true)
if app.Environments != nil {
envs := make([]string, 0, len(app.Environments))
for name, value := range app.Environments {
envs = append(envs, fmt.Sprintf("%s=%s", name, value))
}
mergeEnvs(&ra.App.Environment, envs, true)
}
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
// Check to see if ports have any errors
pm.Ports = cfg.Ports
if _, err := commonnet.ForwardedPorts(&pm); err != nil {
return nil, err
}
pm.Annotations = append(pm.Annotations, types.Annotation{
Name: "coreos.com/rkt/stage1/mutable",
Value: strconv.FormatBool(cfg.Mutable),
})
pm.UserAnnotations = cfg.UserAnnotations
pm.UserLabels = cfg.UserLabels
pmb, err := json.Marshal(pm)
if err != nil {
return nil, errwrap.Wrap(errors.New("error marshalling pod manifest"), err)
}
return pmb, nil
}
func AddApp(cfg AddConfig) error {
// there should be only one app in the config
app := cfg.Apps.Last()
if app == nil {
return errors.New("no image specified")
}
am, err := cfg.Store.GetImageManifest(cfg.Image.String())
if err != nil {
return err
}
var appName *types.ACName
if app.Name != "" {
appName, err = types.NewACName(app.Name)
if err != nil {
return err
}
} else {
appName, err = imageNameToAppName(am.Name)
if err != nil {
return err
}
}
pod, err := pkgPod.PodFromUUIDString(cfg.DataDir, cfg.UUID.String())
if err != nil {
return errwrap.Wrap(errors.New("error loading pod"), err)
}
defer pod.Close()
debug("locking pod manifest")
if err := pod.ExclusiveLockManifest(); err != nil {
return errwrap.Wrap(errors.New("failed to lock pod manifest"), err)
}
defer pod.UnlockManifest()
pm, err := pod.SandboxManifest()
if err != nil {
return errwrap.Wrap(errors.New("cannot add application"), err)
}
if pm.Apps.Get(*appName) != nil {
return fmt.Errorf("error: multiple apps with name %s", *appName)
}
if am.App == nil && app.Exec == "" {
return fmt.Errorf("error: image %s has no app section and --exec argument is not provided", cfg.Image)
}
appInfoDir := common.AppInfoPath(cfg.PodPath, *appName)
if err := os.MkdirAll(appInfoDir, common.DefaultRegularDirPerm); err != nil {
return errwrap.Wrap(errors.New("error creating apps info directory"), err)
}
pcfg := PrepareConfig{
CommonConfig: cfg.CommonConfig,
PrivateUsers: user.NewBlankUidRange(),
}
if cfg.UsesOverlay {
privateUsers, err := preparedWithPrivateUsers(cfg.PodPath)
if err != nil {
log.FatalE("error reading user namespace information", err)
}
if err := pcfg.PrivateUsers.Deserialize([]byte(privateUsers)); err != nil {
return err
}
}
treeStoreID, err := prepareAppImage(pcfg, *appName, cfg.Image, cfg.PodPath, cfg.UsesOverlay)
if err != nil {
return errwrap.Wrap(fmt.Errorf("error preparing image %s", cfg.Image), err)
}
rcfg := RunConfig{
CommonConfig: cfg.CommonConfig,
UseOverlay: cfg.UsesOverlay,
RktGid: cfg.RktGid,
}
if err := setupAppImage(rcfg, *appName, cfg.Image, cfg.PodPath, cfg.UsesOverlay); err != nil {
return fmt.Errorf("error setting up app image: %v", err)
}
if cfg.UsesOverlay {
imgDir := filepath.Join(cfg.PodPath, "overlay", treeStoreID)
if err := os.Chown(imgDir, -1, cfg.RktGid); err != nil {
return err
}
}
ra := schema.RuntimeApp{
Name: *appName,
App: am.App,
Image: schema.RuntimeImage{
Name: &am.Name,
ID: cfg.Image,
Labels: am.Labels,
},
Mounts: MergeMounts(cfg.Apps.Mounts, app.Mounts),
ReadOnlyRootFS: app.ReadOnlyRootFS,
}
if app.Exec != "" {
// 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{app.Exec}
}
if app.Args != nil {
ra.App.Exec = append(ra.App.Exec, app.Args...)
}
if app.WorkingDir != "" {
ra.App.WorkingDirectory = app.WorkingDir
}
if err := prepareIsolators(app, ra.App); err != nil {
return err
}
if app.User != "" {
ra.App.User = app.User
}
if app.Group != "" {
ra.App.Group = app.Group
}
if app.SupplementaryGIDs != nil {
ra.App.SupplementaryGIDs = app.SupplementaryGIDs
}
if app.UserAnnotations != nil {
ra.App.UserAnnotations = app.UserAnnotations
}
if app.UserLabels != nil {
ra.App.UserLabels = app.UserLabels
}
if app.Environments != nil {
envs := make([]string, 0, len(app.Environments))
for name, value := range app.Environments {
envs = append(envs, fmt.Sprintf("%s=%s", name, value))
}
// Let the app level environment override the environment variables.
mergeEnvs(&ra.App.Environment, envs, true)
}
env := ra.App.Environment
env.Set("AC_APP_NAME", appName.String())
envFilePath := filepath.Join(common.Stage1RootfsPath(cfg.PodPath), "rkt", "env", appName.String())
if err := common.WriteEnvFile(env, pcfg.PrivateUsers, envFilePath); err != nil {
return err
}
debug("adding app to sandbox")
pm.Apps = append(pm.Apps, ra)
if err := pod.UpdateManifest(pm, cfg.PodPath); err != nil {
return err
}
args := []string{
fmt.Sprintf("--debug=%t", cfg.Debug),
fmt.Sprintf("--uuid=%s", cfg.UUID),
fmt.Sprintf("--app=%s", appName),
}
if _, err := os.Create(common.AppCreatedPath(pod.Path(), appName.String())); err != nil {
return err
}
ce := CrossingEntrypoint{
PodPath: cfg.PodPath,
PodPID: cfg.PodPID,
AppName: appName.String(),
EntrypointName: appAddEntrypoint,
EntrypointArgs: args,
Interactive: false,
}
if err := ce.Run(); err != nil {
return err
}
return nil
}
// 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, errwrap.Wrap(errors.New("error creating version"), 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 errwrap.Wrap(errors.New("error getting the manifest"), err)
}
appName, err := imageNameToAppName(am.Name)
if err != nil {
return errwrap.Wrap(errors.New("error converting image name to app name"), err)
}
if err := prepareAppImage(cfg, *appName, img, dir, cfg.UseOverlay); err != nil {
return errwrap.Wrap(fmt.Errorf("error setting up image %s", 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,
},
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 err := prepareIsolators(app, ra.App); err != nil {
return err
}
if user := app.User; user != "" {
ra.App.User = user
}
if group := app.Group; group != "" {
ra.App.Group = group
}
// loading the environment from the lowest priority to highest
if cfg.InheritEnv {
// Inherit environment does not override app image environment
mergeEnvs(&ra.App.Environment, os.Environ(), false)
}
mergeEnvs(&ra.App.Environment, cfg.EnvFromFile, true)
mergeEnvs(&ra.App.Environment, cfg.ExplicitEnv, true)
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
// TODO(sur): add to stage1-implementors-guide and to the spec
pm.Annotations = append(pm.Annotations, types.Annotation{
Name: "coreos.com/rkt/stage1/mutable",
Value: strconv.FormatBool(cfg.Mutable),
})
pmb, err := json.Marshal(pm)
if err != nil {
return nil, errwrap.Wrap(errors.New("error marshalling pod manifest"), err)
}
return pmb, nil
}