sharding

package
v1.4.1 Latest Latest
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 Go to latest Published: Jan 18, 2023 License: GPL-3.0 Imports: 11 Imported by: 11

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var ErrCouldNotParseAddress = errors.New("could not parse node's address")

ErrCouldNotParseAddress signals that a given address could not be parsed

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var ErrCouldNotParsePubKey = errors.New("could not parse node's public key")

ErrCouldNotParsePubKey signals that a given public key could not be parsed

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var ErrInvalidMaximumNumberOfShards = errors.New("trying to set an invalid maximum number of shards")

ErrInvalidMaximumNumberOfShards signals that an invalid maximum number of shards has been provided

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var ErrMinNodesPerShardSmallerThanConsensusSize = errors.New("minimum nodes per shard is smaller than consensus group size")

ErrMinNodesPerShardSmallerThanConsensusSize signals that an invalid min nodes per shard has been provided

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var ErrNegativeOrZeroConsensusGroupSize = errors.New("negative or zero consensus group size")

ErrNegativeOrZeroConsensusGroupSize signals that an invalid consensus group size has been provided

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var ErrNilEndOfProcessingHandler = errors.New("nil end of processing handler")

ErrNilEndOfProcessingHandler signals that a nil end of processing handler has been provided

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var ErrNilOwnPublicKey = errors.New("nil own public key")

ErrNilOwnPublicKey signals that a nil own public key has been provided

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var ErrNilPubkeyConverter = errors.New("trying to set nil pubkey converter")

ErrNilPubkeyConverter signals that a nil public key converter has been provided

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var ErrNoPubKeys = errors.New("no public keys defined")

ErrNoPubKeys signals an error when public keys are missing

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var ErrNodesSizeSmallerThanMinNoOfNodes = errors.New("length of nodes defined is smaller than min nodes per shard required")

ErrNodesSizeSmallerThanMinNoOfNodes signals that there are not enough nodes defined in genesis file

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var ErrPublicKeyNotFoundInGenesis = errors.New("public key is not valid, it is missing from genesis file")

ErrPublicKeyNotFoundInGenesis signals an error when the public key is not in genesis file

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var ErrShardIdOutOfRange = errors.New("shard id out of range")

ErrShardIdOutOfRange signals an error when shard id is out of range

Functions

func NewMultiShardCoordinator 

func NewMultiShardCoordinator(numberOfShards, selfId uint32) (*multiShardCoordinator, error)

NewMultiShardCoordinator returns a new multiShardCoordinator and initializes the masks

func NewShuffledOutTrigger 

func NewShuffledOutTrigger(
	ownPubKey []byte,
	currentShardID uint32,
	endProcessHandler func(argument endProcess.ArgEndProcess) error,
) (*shuffledOutTrigger, error)

NewShuffledOutTrigger returns a new instance of shuffledOutTrigger

Types

type Coordinator 

type Coordinator interface {
	NumberOfShards() uint32
	ComputeId(address []byte) uint32
	SelfId() uint32
	SameShard(firstAddress, secondAddress []byte) bool
	CommunicationIdentifier(destShardID uint32) string
	IsInterfaceNil() bool
}

Coordinator defines what a shard state coordinator should hold

type EpochHandler 

type EpochHandler interface {
	MetaEpoch() uint32
	IsInterfaceNil() bool
}

EpochHandler defines what a component which handles current epoch should be able to do

type GenesisNodesSetupHandler 

type GenesisNodesSetupHandler interface {
	AllInitialNodes() []nodesCoordinator.GenesisNodeInfoHandler
	InitialNodesPubKeys() map[uint32][]string
	GetShardIDForPubKey(pubkey []byte) (uint32, error)
	InitialEligibleNodesPubKeysForShard(shardId uint32) ([]string, error)
	InitialNodesInfoForShard(shardId uint32) ([]nodesCoordinator.GenesisNodeInfoHandler, []nodesCoordinator.GenesisNodeInfoHandler, error)
	InitialNodesInfo() (map[uint32][]nodesCoordinator.GenesisNodeInfoHandler, map[uint32][]nodesCoordinator.GenesisNodeInfoHandler)
	GetStartTime() int64
	GetRoundDuration() uint64
	GetShardConsensusGroupSize() uint32
	GetMetaConsensusGroupSize() uint32
	NumberOfShards() uint32
	MinNumberOfNodes() uint32
	MinNumberOfShardNodes() uint32
	MinNumberOfMetaNodes() uint32
	GetHysteresis() float32
	GetAdaptivity() bool
	MinNumberOfNodesWithHysteresis() uint32
	IsInterfaceNil() bool
}

GenesisNodesSetupHandler returns the genesis nodes info

type InitialNode 

type InitialNode struct {
	PubKey        string `json:"pubkey"`
	Address       string `json:"address"`
	InitialRating uint32 `json:"initialRating"`
	// contains filtered or unexported fields
}

InitialNode holds data from json

func (*InitialNode) AddressBytes 

func (ni *InitialNode) AddressBytes() []byte

AddressBytes gets the node address as bytes

func (*InitialNode) AssignedShard 

func (ni *InitialNode) AssignedShard() uint32

AssignedShard gets the node assigned shard

func (*InitialNode) GetInitialRating 

func (ni *InitialNode) GetInitialRating() uint32

GetInitialRating gets the initial rating for a node

func (*InitialNode) IsInterfaceNil 

func (ni *InitialNode) IsInterfaceNil() bool

IsInterfaceNil returns true if underlying object is nil

func (*InitialNode) PubKeyBytes 

func (ni *InitialNode) PubKeyBytes() []byte

PubKeyBytes gets the node public key as bytes

type NodesSetup 

type NodesSetup struct {
	StartTime          int64  `json:"startTime"`
	RoundDuration      uint64 `json:"roundDuration"`
	ConsensusGroupSize uint32 `json:"consensusGroupSize"`
	MinNodesPerShard   uint32 `json:"minNodesPerShard"`

	MetaChainConsensusGroupSize uint32  `json:"metaChainConsensusGroupSize"`
	MetaChainMinNodes           uint32  `json:"metaChainMinNodes"`
	Hysteresis                  float32 `json:"hysteresis"`
	Adaptivity                  bool    `json:"adaptivity"`

	InitialNodes []*InitialNode `json:"initialNodes"`
	// contains filtered or unexported fields
}

NodesSetup hold data for decoded data from json file

func NewNodesSetup 

func NewNodesSetup(
	nodesFilePath string,
	addressPubkeyConverter core.PubkeyConverter,
	validatorPubkeyConverter core.PubkeyConverter,
	genesisMaxNumShards uint32,
) (*NodesSetup, error)

NewNodesSetup creates a new decoded nodes structure from json config file

func (*NodesSetup) AllInitialNodes 

func (ns *NodesSetup) AllInitialNodes() []nodesCoordinator.GenesisNodeInfoHandler

AllInitialNodes returns all initial nodes loaded

func (*NodesSetup) GetAdaptivity 

func (ns *NodesSetup) GetAdaptivity() bool

GetAdaptivity returns the value of the adaptivity boolean flag

func (*NodesSetup) GetHysteresis 

func (ns *NodesSetup) GetHysteresis() float32

GetHysteresis returns the hysteresis value

func (*NodesSetup) GetMetaConsensusGroupSize 

func (ns *NodesSetup) GetMetaConsensusGroupSize() uint32

GetMetaConsensusGroupSize returns the metachain consensus group size

func (*NodesSetup) GetRoundDuration 

func (ns *NodesSetup) GetRoundDuration() uint64

GetRoundDuration returns the round duration

func (*NodesSetup) GetShardConsensusGroupSize 

func (ns *NodesSetup) GetShardConsensusGroupSize() uint32

GetShardConsensusGroupSize returns the shard consensus group size

func (*NodesSetup) GetShardIDForPubKey 

func (ns *NodesSetup) GetShardIDForPubKey(pubKey []byte) (uint32, error)

GetShardIDForPubKey returns the allocated shard ID from public key

func (*NodesSetup) GetStartTime 

func (ns *NodesSetup) GetStartTime() int64

GetStartTime returns the start time

func (*NodesSetup) InitialEligibleNodesPubKeysForShard 

func (ns *NodesSetup) InitialEligibleNodesPubKeysForShard(shardId uint32) ([]string, error)

InitialEligibleNodesPubKeysForShard - gets initial nodes public keys for shard

func (*NodesSetup) InitialNodesInfo 

func (ns *NodesSetup) InitialNodesInfo() (map[uint32][]nodesCoordinator.GenesisNodeInfoHandler, map[uint32][]nodesCoordinator.GenesisNodeInfoHandler)

InitialNodesInfo - gets initial nodes info

func (*NodesSetup) InitialNodesInfoForShard 

func (ns *NodesSetup) InitialNodesInfoForShard(shardId uint32) ([]nodesCoordinator.GenesisNodeInfoHandler, []nodesCoordinator.GenesisNodeInfoHandler, error)

InitialNodesInfoForShard - gets initial nodes info for shard

func (*NodesSetup) InitialNodesPubKeys 

func (ns *NodesSetup) InitialNodesPubKeys() map[uint32][]string

InitialNodesPubKeys - gets initial nodes public keys

func (*NodesSetup) IsInterfaceNil 

func (ns *NodesSetup) IsInterfaceNil() bool

IsInterfaceNil returns true if underlying object is nil

func (*NodesSetup) MinMetaHysteresisNodes 

func (ns *NodesSetup) MinMetaHysteresisNodes() uint32

MinMetaHysteresisNodes returns the minimum number of hysteresis nodes in metachain

func (*NodesSetup) MinNumberOfMetaNodes 

func (ns *NodesSetup) MinNumberOfMetaNodes() uint32

MinNumberOfMetaNodes returns the minimum number of nodes in metachain

func (*NodesSetup) MinNumberOfNodes 

func (ns *NodesSetup) MinNumberOfNodes() uint32

MinNumberOfNodes returns the minimum number of nodes

func (*NodesSetup) MinNumberOfNodesWithHysteresis 

func (ns *NodesSetup) MinNumberOfNodesWithHysteresis() uint32

MinNumberOfNodesWithHysteresis returns the minimum number of nodes with hysteresis

func (*NodesSetup) MinNumberOfShardNodes 

func (ns *NodesSetup) MinNumberOfShardNodes() uint32

MinNumberOfShardNodes returns the minimum number of nodes per shard

func (*NodesSetup) MinShardHysteresisNodes 

func (ns *NodesSetup) MinShardHysteresisNodes() uint32

MinShardHysteresisNodes returns the minimum number of hysteresis nodes per shard

func (*NodesSetup) NumberOfShards 

func (ns *NodesSetup) NumberOfShards() uint32

NumberOfShards returns the calculated number of shards

type OneShardCoordinator 

type OneShardCoordinator struct{}

OneShardCoordinator creates a shard coordinator object

func (*OneShardCoordinator) CommunicationIdentifier 

func (osc *OneShardCoordinator) CommunicationIdentifier(destShardID uint32) string

CommunicationIdentifier returns the identifier between current shard ID and destination shard ID for this implementation, it will always return "_0" as there is a single shard

func (*OneShardCoordinator) ComputeId 

func (osc *OneShardCoordinator) ComputeId(_ []byte) uint32

ComputeId gets shard for the given address

func (*OneShardCoordinator) IsInterfaceNil 

func (osc *OneShardCoordinator) IsInterfaceNil() bool

IsInterfaceNil returns true if there is no value under the interface

func (*OneShardCoordinator) NumberOfShards 

func (osc *OneShardCoordinator) NumberOfShards() uint32

NumberOfShards gets number of shards

func (*OneShardCoordinator) SameShard 

func (osc *OneShardCoordinator) SameShard(_, _ []byte) bool

SameShard returns weather two addresses belong to the same shard

func (*OneShardCoordinator) SelfId 

func (osc *OneShardCoordinator) SelfId() uint32

SelfId gets shard of the current node

type PeerAccountListAndRatingHandler 

type PeerAccountListAndRatingHandler interface {
	// GetChance returns the chances for the rating
	GetChance(uint32) uint32
	// GetStartRating gets the start rating values
	GetStartRating() uint32
	// GetSignedBlocksThreshold gets the threshold for the minimum signed blocks
	GetSignedBlocksThreshold() float32
	// ComputeIncreaseProposer computes the new rating for the increaseLeader
	ComputeIncreaseProposer(shardId uint32, currentRating uint32) uint32
	// ComputeDecreaseProposer computes the new rating for the decreaseLeader
	ComputeDecreaseProposer(shardId uint32, currentRating uint32, consecutiveMisses uint32) uint32
	// RevertIncreaseValidator computes the new rating if a revert for increaseProposer should be done
	RevertIncreaseValidator(shardId uint32, currentRating uint32, nrReverts uint32) uint32
	// ComputeIncreaseValidator computes the new rating for the increaseValidator
	ComputeIncreaseValidator(shardId uint32, currentRating uint32) uint32
	// ComputeDecreaseValidator computes the new rating for the decreaseValidator
	ComputeDecreaseValidator(shardId uint32, currentRating uint32) uint32
	// IsInterfaceNil verifies if the interface is nil
	IsInterfaceNil() bool
}

PeerAccountListAndRatingHandler provides Rating Computation Capabilites for the Nodes Coordinator and ValidatorStatistics

Source Files

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