version

Documentation

Index

• Variables
• type VersionControl
  • func NewVersionControl(log zerolog.Logger, versionBeacons storage.VersionBeacons, ...) (*VersionControl, error)
  • func (v *VersionControl) AddVersionUpdatesConsumer(consumer VersionControlConsumer)
  • func (v *VersionControl) BlockFinalized(h *flow.Header)
  • func (v *VersionControl) CompatibleAtBlock(height uint64) (bool, error)
  • func (v *VersionControl) EndHeight() uint64
  • func (v *VersionControl) StartHeight() uint64
• type VersionControlConsumer

Variables

var ErrOutOfRange = errors.New("height is out of range")

ErrOutOfRange indicates that height is higher than last handled block height

var NoHeight = uint64(0)

NoHeight represents the maximum possible height for blocks.

Types

type VersionControl

type VersionControl struct {
	// Noop implements the protocol.Consumer interface with no operations.
	psEvents.Noop
	sync.Mutex
	component.Component
	// contains filtered or unexported fields
}

VersionControl manages the version control system for the node. It consumes BlockFinalized events and updates the node's version control based on the latest version beacon.

VersionControl implements the protocol.Consumer and component.Component interfaces.

func NewVersionControl

func NewVersionControl(
	log zerolog.Logger,
	versionBeacons storage.VersionBeacons,
	nodeVersion *semver.Version,
	sealedRootBlockHeight uint64,
	latestFinalizedBlockHeight uint64,
) (*VersionControl, error)

NewVersionControl creates a new VersionControl instance.

We currently have no strong guarantee that the node version is a valid semver. See build.SemverV2 for more details. That is why nil is a valid input for node version.

func (*VersionControl) AddVersionUpdatesConsumer

func (v *VersionControl) AddVersionUpdatesConsumer(consumer VersionControlConsumer)

AddVersionUpdatesConsumer adds a consumer for version update events.

func (*VersionControl) BlockFinalized

func (v *VersionControl) BlockFinalized(h *flow.Header)

BlockFinalized is called when a block is finalized. It implements the protocol.Consumer interface.

func (*VersionControl) CompatibleAtBlock

func (v *VersionControl) CompatibleAtBlock(height uint64) (bool, error)

CompatibleAtBlock checks if the node's version is compatible at a given block height. It returns true if the node's version is compatible within the specified height range. Returns expected errors: - ErrOutOfRange if incoming block height is higher that last handled block height

func (*VersionControl) EndHeight

func (v *VersionControl) EndHeight() uint64

EndHeight return the last block that the version supports. End height is the last processed height if there is no end boundary in the current spork.

func (*VersionControl) StartHeight

func (v *VersionControl) StartHeight() uint64

StartHeight return the first block that the version supports. Start height is the sealed root block if there is no start boundary in the current spork.

type VersionControlConsumer

type VersionControlConsumer func(height uint64, version *semver.Version)

VersionControlConsumer defines a function type that consumes version control updates. It is called with the block height and the corresponding semantic version. There are two possible notifications options: - A new or updated version will have a height and a semantic version at that height. - A deleted version will have the previous height and nil semantic version, indicating that the update was deleted.