drivers

type MetricDriver interface {
	//Any initialization the metric driver does while starting.
	Setup() error
	//Any operation the metric driver does while stopping.
	Teardown() error

	CollectMetrics(metricList []string, instanceID string) ([]*model.MetricSpec, error)
	ValidateMetricsSupportList(metricList []string, resourceType string) ([]string, error)
}

type ReplicationDriver interface {
	// Any initialization the replication driver does while starting.
	Setup() error
	// Any operation the replication driver does while stopping.
	Unset() error

	CreateReplication(opt *pb.CreateReplicationOpts) (*model.ReplicationSpec, error)
	DeleteReplication(opt *pb.DeleteReplicationOpts) error
	EnableReplication(opt *pb.EnableReplicationOpts) error
	DisableReplication(opt *pb.DisableReplicationOpts) error
	FailoverReplication(opt *pb.FailoverReplicationOpts) error
}

type VolumeDriver interface {
	//Any initialization the volume driver does while starting.
	Setup() error
	//Any operation the volume driver does while stopping.
	Unset() error

	CreateVolume(opt *pb.CreateVolumeOpts) (*model.VolumeSpec, error)

	PullVolume(volIdentifier string) (*model.VolumeSpec, error)

	DeleteVolume(opt *pb.DeleteVolumeOpts) error

	ExtendVolume(opt *pb.ExtendVolumeOpts) (*model.VolumeSpec, error)

	InitializeConnection(opt *pb.CreateVolumeAttachmentOpts) (*model.ConnectionInfo, error)

	TerminateConnection(opt *pb.DeleteVolumeAttachmentOpts) error

	CreateSnapshot(opt *pb.CreateVolumeSnapshotOpts) (*model.VolumeSnapshotSpec, error)

	PullSnapshot(snapIdentifier string) (*model.VolumeSnapshotSpec, error)

	DeleteSnapshot(opt *pb.DeleteVolumeSnapshotOpts) error

	InitializeSnapshotConnection(opt *pb.CreateSnapshotAttachmentOpts) (*model.ConnectionInfo, error)

	TerminateSnapshotConnection(opt *pb.DeleteSnapshotAttachmentOpts) error

	// NOTE Parameter vg means complete volume group information, because driver
	// may use it to do something and return volume group status.
	CreateVolumeGroup(opt *pb.CreateVolumeGroupOpts) (*model.VolumeGroupSpec, error)

	// NOTE Parameter addVolumesRef or removeVolumesRef means complete volume
	// information that will be added or removed from group. Driver may use
	// them to do some related operations and return their status.
	UpdateVolumeGroup(opt *pb.UpdateVolumeGroupOpts) (*model.VolumeGroupSpec, error)

	// NOTE Parameter volumes means volumes deleted from group, driver may use
	// their compelete information to do some related operations and return
	// their status.
	DeleteVolumeGroup(opt *pb.DeleteVolumeGroupOpts) error

	ListPools() ([]*model.StoragePoolSpec, error)
}