func (ad *attacherDetacher) generateDetachVolumeFunc(
volumeToDetach cache.AttachedVolume,
actualStateOfWorld cache.ActualStateOfWorld) (func() error, error) {
// Get attacher plugin
attachableVolumePlugin, err := ad.volumePluginMgr.FindAttachablePluginBySpec(volumeToDetach.VolumeSpec)
if err != nil || attachableVolumePlugin == nil {
return nil, fmt.Errorf(
"failed to get AttachablePlugin from volumeSpec for volume %q err=%v",
volumeToDetach.VolumeSpec.Name(),
err)
}
deviceName, err := attachableVolumePlugin.GetDeviceName(volumeToDetach.VolumeSpec)
if err != nil {
return nil, fmt.Errorf(
"failed to GetDeviceName from AttachablePlugin for volumeSpec %q err=%v",
volumeToDetach.VolumeSpec.Name(),
err)
}
volumeDetacher, err := attachableVolumePlugin.NewDetacher()
if err != nil {
return nil, fmt.Errorf(
"failed to get NewDetacher from volumeSpec for volume %q err=%v",
volumeToDetach.VolumeSpec.Name(),
err)
}
return func() error {
// Execute detach
detachErr := volumeDetacher.Detach(deviceName, volumeToDetach.NodeName)
if detachErr != nil {
// On failure, just log and exit. The controller will retry
glog.Errorf(
"Detach operation for device %q from node %q failed with: %v",
volumeToDetach.VolumeName, volumeToDetach.NodeName, detachErr)
return detachErr
}
glog.Infof(
"Successfully detached device %q from node %q. Will update actual state of world.",
volumeToDetach.VolumeName, volumeToDetach.NodeName)
// Update actual state of world
actualStateOfWorld.DeleteVolumeNode(volumeToDetach.VolumeName, volumeToDetach.NodeName)
return nil
}, nil
}
func (ad *attacherDetacher) generateAttachVolumeFunc(
volumeToAttach cache.VolumeToAttach,
actualStateOfWorld cache.ActualStateOfWorld) (func() error, error) {
// Get attacher plugin
attachableVolumePlugin, err := ad.volumePluginMgr.FindAttachablePluginBySpec(volumeToAttach.VolumeSpec)
if err != nil || attachableVolumePlugin == nil {
return nil, fmt.Errorf(
"failed to get AttachablePlugin from volumeSpec for volume %q err=%v",
volumeToAttach.VolumeSpec.Name(),
err)
}
volumeAttacher, newAttacherErr := attachableVolumePlugin.NewAttacher()
if newAttacherErr != nil {
return nil, fmt.Errorf(
"failed to get NewAttacher from volumeSpec for volume %q err=%v",
volumeToAttach.VolumeSpec.Name(),
newAttacherErr)
}
return func() error {
// Execute attach
attachErr := volumeAttacher.Attach(volumeToAttach.VolumeSpec, volumeToAttach.NodeName)
if attachErr != nil {
// On failure, just log and exit. The controller will retry
glog.Errorf(
"Attach operation for device %q to node %q failed with: %v",
volumeToAttach.VolumeName, volumeToAttach.NodeName, attachErr)
return attachErr
}
glog.Infof(
"Successfully attached device %q to node %q. Will update actual state of world.",
volumeToAttach.VolumeName, volumeToAttach.NodeName)
// Update actual state of world
_, addVolumeNodeErr := actualStateOfWorld.AddVolumeNode(volumeToAttach.VolumeSpec, volumeToAttach.NodeName)
if addVolumeNodeErr != nil {
// On failure, just log and exit. The controller will retry
glog.Errorf(
"Attach operation for device %q to node %q succeeded, but updating actualStateOfWorld failed with: %v",
volumeToAttach.VolumeName, volumeToAttach.NodeName, addVolumeNodeErr)
return addVolumeNodeErr
}
return nil
}, nil
}