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kubelet/rkt: Add volumeGetter to rkt.
This enable rkt to fetch the volume mounts by the kubelet.
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@ -42,7 +42,6 @@ import (
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"github.com/GoogleCloudPlatform/kubernetes/pkg/securitycontext"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/types"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/util"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/volume"
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appcschema "github.com/appc/spec/schema"
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appctypes "github.com/appc/spec/schema/types"
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"github.com/coreos/go-systemd/dbus"
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@ -102,10 +101,16 @@ type runtime struct {
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recorder record.EventRecorder
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prober prober.Prober
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readinessManager *kubecontainer.ReadinessManager
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volumeGetter volumeGetter
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}
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var _ kubecontainer.Runtime = &runtime{}
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// TODO(yifan): Remove this when volumeManager is moved to separate package.
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type volumeGetter interface {
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GetVolumes(podUID types.UID) (kubecontainer.VolumeMap, bool)
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}
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// New creates the rkt container runtime which implements the container runtime interface.
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// It will test if the rkt binary is in the $PATH, and whether we can get the
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// version of it. If so, creates the rkt container runtime, otherwise returns an error.
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@ -113,7 +118,8 @@ func New(config *Config,
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generator kubecontainer.RunContainerOptionsGenerator,
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recorder record.EventRecorder,
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containerRefManager *kubecontainer.RefManager,
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readinessManager *kubecontainer.ReadinessManager) (kubecontainer.Runtime, error) {
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readinessManager *kubecontainer.ReadinessManager,
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volumeGetter volumeGetter) (kubecontainer.Runtime, error) {
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systemdVersion, err := getSystemdVersion()
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if err != nil {
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@ -353,7 +359,7 @@ func setApp(app *appctypes.App, c *api.Container) error {
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// makePodManifest transforms a kubelet pod spec to the rkt pod manifest.
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// TODO(yifan): Use the RunContainerOptions generated by GenerateRunContainerOptions().
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func (r *runtime) makePodManifest(pod *api.Pod, volumeMap map[string]volume.Volume) (*appcschema.PodManifest, error) {
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func (r *runtime) makePodManifest(pod *api.Pod) (*appcschema.PodManifest, error) {
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manifest := appcschema.BlankPodManifest()
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// Get the image manifests, assume they are already in the cas,
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@ -396,6 +402,11 @@ func (r *runtime) makePodManifest(pod *api.Pod, volumeMap map[string]volume.Volu
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})
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}
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volumeMap, ok := r.volumeGetter.GetVolumes(pod.UID)
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if !ok {
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return nil, fmt.Errorf("cannot get the volumes for pod %q", kubecontainer.GetPodFullName(pod))
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}
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// Set global volumes.
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for name, volume := range volumeMap {
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volName, err := appctypes.NewACName(name)
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@ -486,11 +497,11 @@ func (r *runtime) apiPodToruntimePod(uuid string, pod *api.Pod) *kubecontainer.P
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// On success, it will return a string that represents name of the unit file
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// and a boolean that indicates if the unit file needs to be reloaded (whether
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// the file is already existed).
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func (r *runtime) preparePod(pod *api.Pod, volumeMap map[string]volume.Volume) (string, bool, error) {
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func (r *runtime) preparePod(pod *api.Pod) (string, bool, error) {
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cmds := []string{"prepare", "--quiet", "--pod-manifest"}
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// Generate the pod manifest from the pod spec.
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manifest, err := r.makePodManifest(pod, volumeMap)
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manifest, err := r.makePodManifest(pod)
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if err != nil {
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return "", false, err
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}
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@ -561,10 +572,10 @@ func (r *runtime) preparePod(pod *api.Pod, volumeMap map[string]volume.Volume) (
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// RunPod first creates the unit file for a pod, and then calls
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// StartUnit over d-bus.
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func (r *runtime) RunPod(pod *api.Pod, volumeMap map[string]volume.Volume) error {
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func (r *runtime) RunPod(pod *api.Pod) error {
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glog.V(4).Infof("Rkt starts to run pod: name %q.", pod.Name)
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name, needReload, err := r.preparePod(pod, volumeMap)
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name, needReload, err := r.preparePod(pod)
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if err != nil {
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return err
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}
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@ -812,7 +823,7 @@ func (r *runtime) SyncPod(pod *api.Pod, runningPod kubecontainer.Pod, podStatus
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if len(runningPod.Containers) == 0 {
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glog.V(4).Infof("Pod %q is not running, will start it", podFullName)
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// TODO(yifan): Use RunContainerOptionsGeneratior to get volumeMaps, etc.
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return r.RunPod(pod, nil)
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return r.RunPod(pod)
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}
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// Add references to all containers.
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@ -869,7 +880,7 @@ func (r *runtime) SyncPod(pod *api.Pod, runningPod kubecontainer.Pod, podStatus
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if err := r.KillPod(runningPod); err != nil {
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return err
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}
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if err := r.RunPod(pod, nil); err != nil {
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if err := r.RunPod(pod); err != nil {
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return err
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}
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}
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@ -38,7 +38,8 @@ func New(config *Config,
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generator kubecontainer.RunContainerOptionsGenerator,
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recorder record.EventRecorder,
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containerRefManager *kubecontainer.RefManager,
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readinessManager *kubecontainer.ReadinessManager) (kubecontainer.Runtime, error) {
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readinessManager *kubecontainer.ReadinessManager,
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volumeGetter volumeGetter) (kubecontainer.Runtime, error) {
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return nil, unsupportedError
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}
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