placement

Documentation

Index

• func BuildObjectPlacement(nm *netmapSDK.Netmap, cnrNodes netmapSDK.ContainerNodes, id *object.ID) ([]netmapSDK.Nodes, error)
• func FlattenNodes(ns []netmapSDK.Nodes) netmapSDK.Nodes
• type Builder
  • func NewNetworkMapBuilder(nm *netmapSDK.Netmap) Builder
  • func NewNetworkMapSourceBuilder(nmSrc netmap.Source) Builder
• type Option
  • func ForContainer(cnr *container.Container) Option
  • func ForObject(id *object.ID) Option
  • func SuccessAfter(v uint32) Option
  • func UseBuilder(b Builder) Option
  • func WithoutSuccessTracking() Option
• type Traverser
  • func NewTraverser(opts ...Option) (*Traverser, error)
  • func (t *Traverser) Next() []*network.Address
  • func (t *Traverser) SubmitSuccess()
  • func (t *Traverser) Success() bool

Functions

func BuildObjectPlacement

func BuildObjectPlacement(nm *netmapSDK.Netmap, cnrNodes netmapSDK.ContainerNodes, id *object.ID) ([]netmapSDK.Nodes, error)

func FlattenNodes

func FlattenNodes(ns []netmapSDK.Nodes) netmapSDK.Nodes

FlattenNodes appends each row to the flat list.

Types

type Builder

type Builder interface {
	// BuildPlacement returns the list of placement vectors
	// for object according to the placement policy.
	//
	// Must return all container nodes if object identifier
	// is nil.
	BuildPlacement(*object.Address, *netmap.PlacementPolicy) ([]netmap.Nodes, error)
}

Builder is an interface of the object placement vector builder.

func NewNetworkMapBuilder

func NewNetworkMapBuilder(nm *netmapSDK.Netmap) Builder

func NewNetworkMapSourceBuilder

func NewNetworkMapSourceBuilder(nmSrc netmap.Source) Builder

type Option

type Option func(*cfg)

Option represents placement traverser option.

func ForContainer

func ForContainer(cnr *container.Container) Option

ForContainer is a traversal container setting option.

func ForObject

func ForObject(id *object.ID) Option

ForObject is a processing object setting option.

func SuccessAfter

func SuccessAfter(v uint32) Option

SuccessAfter is a flat success number setting option.

Option has no effect if the number is not positive.

func UseBuilder

func UseBuilder(b Builder) Option

UseBuilder is a placement builder setting option.

Overlaps UseNetworkMap option.

func WithoutSuccessTracking

func WithoutSuccessTracking() Option

WithoutSuccessTracking disables success tracking in traversal.

type Traverser

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

Traverser represents utility for controlling traversal of object placement vectors.

func NewTraverser

func NewTraverser(opts ...Option) (*Traverser, error)

NewTraverser creates, initializes with options and returns Traverser instance.

func (*Traverser) Next

func (t *Traverser) Next() []*network.Address

Next returns next unprocessed address of the object placement.

Returns nil if no nodes left or traversal operation succeeded.

func (*Traverser) SubmitSuccess

func (t *Traverser) SubmitSuccess()

SubmitSuccess writes single succeeded node operation.

func (*Traverser) Success

func (t *Traverser) Success() bool

Success returns true if traversal operation succeeded.