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Added PersistentVolumeController

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This commit is contained in:
markturansky
2015-10-12 14:27:49 -04:00
parent d3243b8778
commit 4fc1bf1f23
20 changed files with 1195 additions and 129 deletions
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23
pkg/volume/plugins.go
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@@ -23,6 +23,7 @@ import (
"github.com/golang/glog"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/resource"
client "k8s.io/kubernetes/pkg/client/unversioned"
"k8s.io/kubernetes/pkg/cloudprovider"
"k8s.io/kubernetes/pkg/types"
@@ -39,11 +40,11 @@ type VolumeOptions struct {
// it will be replaced and expanded on by future SecurityContext work.
RootContext string
// The attributes below are required by volume.Creater
// perhaps CreaterVolumeOptions struct?
// The attributes below are required by volume.Provisioner
// TODO: refactor all of this out of volumes when an admin can configure many kinds of provisioners.
// CapacityMB is the size in MB of a volume.
CapacityMB int
// Capacity is the size of a volume.
Capacity resource.Quantity
// AccessModes of a volume
AccessModes []api.PersistentVolumeAccessMode
// Reclamation policy for a persistent volume
@@ -106,12 +107,12 @@ type DeletableVolumePlugin interface {
NewDeleter(spec *Spec) (Deleter, error)
}
// CreatableVolumePlugin is an extended interface of VolumePlugin and is used to create volumes for the cluster.
type CreatableVolumePlugin interface {
// ProvisionableVolumePlugin is an extended interface of VolumePlugin and is used to create volumes for the cluster.
type ProvisionableVolumePlugin interface {
VolumePlugin
// NewCreater creates a new volume.Creater which knows how to create PersistentVolumes in accordance with
// NewProvisioner creates a new volume.Provisioner which knows how to create PersistentVolumes in accordance with
// the plugin's underlying storage provider
NewCreater(options VolumeOptions) (Creater, error)
NewProvisioner(options VolumeOptions) (Provisioner, error)
}
// VolumeHost is an interface that plugins can use to access the kubelet.
@@ -365,13 +366,13 @@ func (pm *VolumePluginMgr) FindDeletablePluginBySpec(spec *Spec) (DeletableVolum
// FindCreatablePluginBySpec fetches a persistent volume plugin by name. If no plugin
// is found, returns error.
func (pm *VolumePluginMgr) FindCreatablePluginBySpec(spec *Spec) (CreatableVolumePlugin, error) {
func (pm *VolumePluginMgr) FindCreatablePluginBySpec(spec *Spec) (ProvisionableVolumePlugin, error) {
volumePlugin, err := pm.FindPluginBySpec(spec)
if err != nil {
return nil, err
}
if creatableVolumePlugin, ok := volumePlugin.(CreatableVolumePlugin); ok {
return creatableVolumePlugin, nil
if provisionableVolumePlugin, ok := volumePlugin.(ProvisionableVolumePlugin); ok {
return provisionableVolumePlugin, nil
}
return nil, fmt.Errorf("no creatable volume plugin matched")
}