blockchain

package
v0.0.0-...-214c9eb Latest Latest
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 Go to latest Published: Oct 7, 2019 License: MIT Imports: 24 Imported by: 2

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func DashBlockTransactions 

func DashBlockTransactions() func() float64

func DashMempoolTransactions 

func DashMempoolTransactions() func() float64

func GenerateMerkleTree 

func GenerateMerkleTree(transactions []*protobufs.Transaction, receiptsContract []*protobufs.Receipt) ([]byte, error)

GenerateMerkleTree generate a merkletree and return its root

func OpenService 

func OpenService(CurrentBlock uint64)

OpenService open a service in 3142 port where you can find all the balance and nonce of everyone in the network

Types

type BeaconChain 

type BeaconChain struct {
	MerkleRootsDb map[uint32]*leveldb.DB
	Validators    *ValidatorsBook

	CurrentBlock map[uint32]uint64
}

BeaconChain is an internal representation of a beacon chain

func NewBeaconChain 

func NewBeaconChain(dbPath string) (*BeaconChain, error)

NewBeaconChain create a new beacon chain

func (*BeaconChain) GetBlockBeacon 

func (beaconChain *BeaconChain) GetBlockBeacon(index int64, shard uint32) ([]byte, error)

GetBlockBeacon returns the array of blocks at an index and at a specific shard

func (*BeaconChain) GetMerkleRoots 

func (beaconChain *BeaconChain) GetMerkleRoots(index uint64, shard uint32) ([]byte, error)

func (*BeaconChain) SaveMerkleRoots 

func (beaconChain *BeaconChain) SaveMerkleRoots(mr *protobufs.MerkleRootsSigned) error

type Blockchain 

type Blockchain struct {
	BlockDb       *leveldb.DB
	ContractDb    *leveldb.DB
	StateDb       *leveldb.DB
	CasperVotesDb *leveldb.DB

	Mempool *mempool

	Schnorr         map[string][]byte
	MTReceipt       [][]byte
	RSchnorr        [][]byte
	PSchnorr        [][]byte
	MessagesReceipt [][]byte

	GenesisTimestamp uint64

	CurrentBlock      uint64
	CurrentVote       uint64
	CurrentCheckpoint uint64

	CurrentValidator map[uint64]string

	PriorityBlocks pq.PriorityQueue
	MissingBlock   map[string]MissingBlockStruct
	HashBlocks     map[string]uint64
	// contains filtered or unexported fields
}

Blockchain is an internal representation of a blockchain

func NewBlockchain 

func NewBlockchain(dbPath string, index uint64) (*Blockchain, error)

NewBlockchain creates a database db

func (*Blockchain) AddMempoolTransaction 

func (bc *Blockchain) AddMempoolTransaction(pb *protobufs.Transaction, transaction []byte) error

AddMempoolTransaction adds a transaction to the mempool

func (*Blockchain) AddMissingBlock 

func (bc *Blockchain) AddMissingBlock(key string, arrivalOrder float64, hightestBlock string)

func (*Blockchain) GenerateBlock 

func (bc *Blockchain) GenerateBlock(miner string, shard uint32, validators *ValidatorsBook) (*protobufs.Block, error)

GenerateBlock generates a valid unsigned block with transactions from the mempool

func (*Blockchain) GetBlock 

func (bc *Blockchain) GetBlock(index uint64) ([]byte, error)

GetBlock returns the array of blocks at an index

func (*Blockchain) GetContractCode 

func (bc *Blockchain) GetContractCode(address []byte) ([]byte, error)

GetContractCode returns the code of a contract at an address. Used as a wrapper so when we add diffed contracts in the future it's easier to change without breaking everything

func (*Blockchain) GetNetworkIndex 

func (bc *Blockchain) GetNetworkIndex() int64

GetNetworkIndex returns the current block index of the network

func (*Blockchain) GetWalletState 

func (bc *Blockchain) GetWalletState(wallet string) (protobufs.AccountState, error)

GetWalletState returns the state of a wallet in the current block

func (*Blockchain) ModifyMissingBlock 

func (bc *Blockchain) ModifyMissingBlock(key string, mb MissingBlockStruct, hashCurrentBlock string)

func (*Blockchain) SetState 

func (bc *Blockchain) SetState(wallet string, newState *protobufs.AccountState) error

func (*Blockchain) ValidateBlock 

func (bc *Blockchain) ValidateBlock(block *protobufs.Block) (bool, error)

ValidateBlock checks the validity of a block. It uses the current blockchain state so the passed block might become valid in the future.

func (*Blockchain) ValidateTransaction 

func (bc *Blockchain) ValidateTransaction(t *protobufs.Transaction) error

ValidateTransaction validates a transaction with the current state. Different from ValidateBlock because that has to verify for double spends inside the same block.

type Contract 

type Contract struct {
	ContractDb  *leveldb.DB
	StateDb     *leveldb.DB
	Code        []byte
	Address     []byte
	State       *bp.ContractState
	Block       *bp.Block
	Chain       *Blockchain
	Transaction *bp.Transaction
	Return      *ReturnState
	Sender      string

	TempDB      map[string][]byte
	TempBalance uint64

	Module *wasm.Module
	VM     *exec.VM
}

Contract is the struct that saves the state of a contract

func GetContract 

func GetContract(address string, bc *Blockchain, tr *bp.Transaction, balance uint64) (*Contract, error)

GetContract loads the code and state from the DB and returns an error if there is no code. In case there is no state an empty one will be generated

func (*Contract) ExecuteContract 

func (c *Contract) ExecuteContract(exportName string, arguments []uint64) *ReturnState

ExecuteContract runs the function with the passed arguments

func (*Contract) SaveState 

func (c *Contract) SaveState() error

SaveState saves the contract state to the database TODO Save tempdb

type MissingBlockStruct 

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

func (MissingBlockStruct) GetMBArrivalOrder 

func (mb MissingBlockStruct) GetMBArrivalOrder() float64

func (MissingBlockStruct) GetMBHightestBlock 

func (mb MissingBlockStruct) GetMBHightestBlock() string

func (MissingBlockStruct) GetMBSequenceBlock 

func (mb MissingBlockStruct) GetMBSequenceBlock() uint64

func (MissingBlockStruct) GetMBbBlocksToRecalculate 

func (mb MissingBlockStruct) GetMBbBlocksToRecalculate() []string

type ReturnState 

type ReturnState struct {
	Reverted bool
	GasLeft  int
	Outputs  []*bp.Receipt
}

ReturnState tells the block generator what the contract outputed

type Validator 

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

Validator is a representation of a validator node

type ValidatorsBook 

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

ValidatorsBook is a structure that keeps record of every validator and its stake

func NewValidatorsBook 

func NewValidatorsBook() (v *ValidatorsBook)

NewValidatorsBook creates an empty ValidatorsBook object

func (*ValidatorsBook) AddValidator 

func (v *ValidatorsBook) AddValidator(wallet string, dynasty int64, pubSchnorrKey []byte, transaction *protobufs.Transaction, shard uint32) bool

AddValidator adds a new validator to the book. If the validator is already registered, overwrites its stake with the new one Return if the validator already exist or not

func (*ValidatorsBook) CheckDynasty 

func (v *ValidatorsBook) CheckDynasty(wallet string, currentBlock uint64) bool

CheckDynasty check if the dynasty of wallet are correct

func (*ValidatorsBook) CheckIsValidator 

func (v *ValidatorsBook) CheckIsValidator(wallet string) bool

CheckIsValidator check if wallet is inside the valsArray

func (*ValidatorsBook) CheckWithdraw 

func (v *ValidatorsBook) CheckWithdraw(wallet string, bc *Blockchain) bool

CheckWithdraw remove the validator and give it back him cash

func (*ValidatorsBook) ChooseShard 

func (v *ValidatorsBook) ChooseShard(seed int64, wallet string, bc *Blockchain) (uint32, error)

ChooseShard calulate the shard for every validators return the shard for a specific wallet

func (*ValidatorsBook) ChooseValidator 

func (v *ValidatorsBook) ChooseValidator(currentBlock int64, currentShard uint32, bc *Blockchain) (string, error)

ChooseValidator returns a validator's wallet, chosen randomly and proportionally to the stake

func (*ValidatorsBook) GetSchnorrPublicKey 

func (v *ValidatorsBook) GetSchnorrPublicKey(wallet string) (kyber.Point, error)

GetSchnorrPublicKey returns the schnorrPublicKey for a given wallet.

func (*ValidatorsBook) GetShard 

func (v *ValidatorsBook) GetShard(wallet string) (uint32, error)

GetShard is used to get the validator's shard

func (*ValidatorsBook) LenValidators 

func (v *ValidatorsBook) LenValidators(currentShard uint32) int

func (*ValidatorsBook) RemoveValidator 

func (v *ValidatorsBook) RemoveValidator(wallet string) error

RemoveValidator must be called in case a validator leaves its job

func (*ValidatorsBook) SetShard 

func (v *ValidatorsBook) SetShard(wallet string, shard uint32) error

SetShard is used to update the validator's shard when it changes.

func (*ValidatorsBook) WithdrawValidator 

func (v *ValidatorsBook) WithdrawValidator(wallet string, currentBlock int64) error

WithdrawValidator when a withdraw message arrive change the enddynasy of the wallet

Source Files

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