blockchain

package

v0.0.0-...-bb32285 Latest Latest Go to latest Published: Jul 6, 2021 License: MIT Imports: 10 Imported by: 0

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Repository

github.com/quarterblue/parsec

Links

Open Source Insights

Documentation ¶

Index ¶

Constants
type Block
type Blockchain
- func CreateBlockchain() *Blockchain
- func (chain *Blockchain) AddBlock(data string)
- func (chain *Blockchain) Iterator() *ChainIterator
type ChainIterator
- func (i *ChainIterator) Next() *Block
type ProofOfWork
- func CreatePow(b *Block) *ProofOfWork
- func (pow *ProofOfWork) ComputeHash() (int, []byte)

Constants ¶

View Source

const InitDifficulty = 12

Variables ¶

This section is empty.

Functions ¶

This section is empty.

Types ¶

type Block ¶

type Block struct {
	Timestamp  int64  `json:"timestamp"`
	Data       []byte `json:"data"`
	Hash       []byte `json:"hash"`
	LastHash   []byte `json:"lasthash"`
	Nonce      int    `json:"nonce"`
	Difficulty int    `json:"difficulty"`
}

func CreateBlock ¶

func CreateBlock(data string, lastBlock []byte, difficulty int) *Block

func Deserialize ¶

func Deserialize(data []byte) *Block

Deserializes bytestring into block when loading from persistance storage

func Genesis ¶

func Genesis() *Block

Generates the first hardcoded Gensis block. The data used for the hash is NYTimes headline title from August 7, 2020.

func (*Block) AdjustDiff ¶

func (block *Block) AdjustDiff(timestamp int64)

Utility function to adjust the difficulty of the proof of work algorithm. Difficulty is adjusted based on mineRate set at top line

func (*Block) PrintBlock ¶

func (block *Block) PrintBlock()

Prints block information for debugging purposes

func (*Block) Serialize ¶

func (b *Block) Serialize() []byte

Serializes a block into bytestring for persistance storage

type Blockchain ¶

type Blockchain struct {
	Database *bolt.DB
	// contains filtered or unexported fields
}

func CreateBlockchain ¶

func CreateBlockchain() *Blockchain

Creates a new blockchain if there is no existing blockchain and store Gensis block inside. If there is an existing blockchain, set the head of the blockchain instance to the last block block hash stored in the database

func (*Blockchain) AddBlock ¶

func (chain *Blockchain) AddBlock(data string)

func (*Blockchain) Iterator ¶

func (chain *Blockchain) Iterator() *ChainIterator

type ChainIterator ¶

type ChainIterator struct {
	Database *bolt.DB
	// contains filtered or unexported fields
}

func (*ChainIterator) Next ¶

func (i *ChainIterator) Next() *Block

type ProofOfWork ¶

type ProofOfWork struct {
	Block  *Block
	Target *big.Int
}

func CreatePow ¶

func CreatePow(b *Block) *ProofOfWork

func (*ProofOfWork) ComputeHash ¶

func (pow *ProofOfWork) ComputeHash() (int, []byte)

Source Files ¶

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