volume

type Builder interface {
	// Uses Interface to provide the path for Docker binds.
	Volume
	// SetUp prepares and mounts/unpacks the volume to a self-determined
	// directory path.  This may be called more than once, so
	// implementations must be idempotent.
	SetUp() error
	// SetUpAt prepares and mounts/unpacks the volume to the specified
	// directory path, which may or may not exist yet.  This may be called
	// more than once, so implementations must be idempotent.
	SetUpAt(dir string) error
	// IsReadOnly is a flag that gives the builder's ReadOnly attribute.
	// All persistent volumes have a private readOnly flag in their builders.
	IsReadOnly() bool
}

type Cleaner interface {
	Volume
	// TearDown unmounts the volume from a self-determined directory and
	// removes traces of the SetUp procedure.
	TearDown() error
	// TearDown unmounts the volume from the specified directory and
	// removes traces of the SetUp procedure.
	TearDownAt(dir string) error
}

type CreatableVolumePlugin interface {
	VolumePlugin
	// NewCreater creates a new volume.Creater which knows how to create PersistentVolumes in accordance with
	// the plugin's underlying storage provider
	NewCreater(options VolumeOptions) (Creater, error)
}

type Creater interface {
	Create() (*api.PersistentVolume, error)
}

type DeletableVolumePlugin interface {
	VolumePlugin
	// NewDeleter creates a new volume.Deleter which knows how to delete this resource
	// in accordance with the underlying storage provider after the volume's release from a claim
	NewDeleter(spec *Spec) (Deleter, error)
}

type Deleter interface {
	Volume
	Delete() error
}

type FakeDeleter struct {
	// contains filtered or unexported fields
}

type FakeVolume struct {
	PodUID  types.UID
	VolName string
	Plugin  *FakeVolumePlugin
}

type FakeVolumePlugin struct {
	PluginName string
	Host       VolumeHost
}

type PersistentVolumePlugin interface {
	VolumePlugin
	// GetAccessModes describes the ways a given volume can be accessed/mounted.
	GetAccessModes() []api.PersistentVolumeAccessMode
}

type RecyclableVolumePlugin interface {
	VolumePlugin
	// NewRecycler creates a new volume.Recycler which knows how to reclaim this resource
	// after the volume's release from a PersistentVolumeClaim
	NewRecycler(spec *Spec) (Recycler, error)
}

type Recycler interface {
	Volume
	// Recycle reclaims the resource.  Calls to this method should block until the recycling task is complete.
	// Any error returned indicates the volume has failed to be reclaimed.  A nil return indicates success.
	Recycle() error
}

type Spec struct {
	Volume           *api.Volume
	PersistentVolume *api.PersistentVolume
	ReadOnly         bool
}

type Volume interface {
	// GetPath returns the directory path the volume is mounted to.
	GetPath() string
}

type VolumeConfig struct {
	// RecyclerPodTemplate is pod template that understands how to scrub clean a persistent volume after its release.
	// The template is used by plugins which override specific properties of the pod in accordance with that plugin.
	// See NewPersistentVolumeRecyclerPodTemplate for the properties that are expected to be overridden.
	RecyclerPodTemplate *api.Pod

	// RecyclerMinimumTimeout is the minimum amount of time in seconds for the recycler pod's ActiveDeadlineSeconds attribute.
	// Added to the minimum timeout is the increment per Gi of capacity.
	RecyclerMinimumTimeout int

	// RecyclerTimeoutIncrement is the number of seconds added to the recycler pod's ActiveDeadlineSeconds for each
	// Gi of capacity in the persistent volume.
	// Example: 5Gi volume x 30s increment = 150s + 30s minimum = 180s ActiveDeadlineSeconds for recycler pod
	RecyclerTimeoutIncrement int

	// OtherAttributes stores config as strings.  These strings are opaque to the system and only understood by the binary
	// hosting the plugin and the plugin itself.
	OtherAttributes map[string]string
}

type VolumeHost interface {
	// GetPluginDir returns the absolute path to a directory under which
	// a given plugin may store data.  This directory might not actually
	// exist on disk yet.  For plugin data that is per-pod, see
	// GetPodPluginDir().
	GetPluginDir(pluginName string) string

	// GetPodVolumeDir returns the absolute path a directory which
	// represents the named volume under the named plugin for the given
	// pod.  If the specified pod does not exist, the result of this call
	// might not exist.
	GetPodVolumeDir(podUID types.UID, pluginName string, volumeName string) string

	// GetPodPluginDir returns the absolute path to a directory under which
	// a given plugin may store data for a given pod.  If the specified pod
	// does not exist, the result of this call might not exist.  This
	// directory might not actually exist on disk yet.
	GetPodPluginDir(podUID types.UID, pluginName string) string

	// GetKubeClient returns a client interface
	GetKubeClient() client.Interface

	// NewWrapperBuilder finds an appropriate plugin with which to handle
	// the provided spec.  This is used to implement volume plugins which
	// "wrap" other plugins.  For example, the "secret" volume is
	// implemented in terms of the "emptyDir" volume.
	NewWrapperBuilder(spec *Spec, pod *api.Pod, opts VolumeOptions) (Builder, error)

	// NewWrapperCleaner finds an appropriate plugin with which to handle
	// the provided spec.  See comments on NewWrapperBuilder for more
	// context.
	NewWrapperCleaner(spec *Spec, podUID types.UID) (Cleaner, error)

	// Get cloud provider from kubelet.
	GetCloudProvider() cloudprovider.Interface

	// Get mounter interface.
	GetMounter() mount.Interface

	// Get writer interface for writing data to disk.
	GetWriter() io.Writer
}

type VolumeOptions struct {
	// The rootcontext to use when performing mounts for a volume.
	// This is a temporary measure in order to set the rootContext of tmpfs mounts correctly.
	// it will be replaced and expanded on by future SecurityContext work.
	RootContext string

	// CapacityMB is the size in MB of a volume.
	CapacityMB int
	// AccessModes of a volume
	AccessModes []api.PersistentVolumeAccessMode
	// Reclamation policy for a persistent volume
	PersistentVolumeReclaimPolicy api.PersistentVolumeReclaimPolicy
}

type VolumePlugin interface {
	// Init initializes the plugin.  This will be called exactly once
	// before any New* calls are made - implementations of plugins may
	// depend on this.
	Init(host VolumeHost)

	// Name returns the plugin's name.  Plugins should use namespaced names
	// such as "example.com/volume".  The "kubernetes.io" namespace is
	// reserved for plugins which are bundled with kubernetes.
	Name() string

	// CanSupport tests whether the plugin supports a given volume
	// specification from the API.  The spec pointer should be considered
	// const.
	CanSupport(spec *Spec) bool

	// NewBuilder creates a new volume.Builder from an API specification.
	// Ownership of the spec pointer in *not* transferred.
	// - spec: The api.Volume spec
	// - pod: The enclosing pod
	NewBuilder(spec *Spec, podRef *api.Pod, opts VolumeOptions) (Builder, error)

	// NewCleaner creates a new volume.Cleaner from recoverable state.
	// - name: The volume name, as per the api.Volume spec.
	// - podUID: The UID of the enclosing pod
	NewCleaner(name string, podUID types.UID) (Cleaner, error)
}

type VolumePluginMgr struct {
	// contains filtered or unexported fields
}