README
¶
Blockchain
A simple blockchain implementation.
Install
Fist, use go get to install the latest version of the library:
go get -u github.com/lynn9388/blockchain
Next, include this package in your application:
import "github.com/lynn9388/blockchain"
Example
genesis := GenesisBlock()
bc := NewBlockchain(genesis)
bc.AddBlock(genesis.Header.NewBlock(StringData("lynn9388")))
Documentation
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Overview ¶
Package blockchain provides a simple blockchain implementation.
Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type Block ¶
type Block struct {
Header *BlockHeader `json:"header"`
Data [][]byte `json:"data"`
}
Block holds batches of valid data/transactions.
type BlockHeader ¶
type BlockHeader struct {
Index int `json:"index"`
Time int64 `json:"time"`
PrevHash []byte `json:"prevHash"`
MerkleRoot []byte `json:"merkleRoot"`
Extra []byte `json:"extra"`
}
BlockHeader holds the metadata of a block
func (*BlockHeader) Hash ¶
func (bh *BlockHeader) Hash() []byte
Hash returns the SHA256 hash of the block header.
func (*BlockHeader) ToByte ¶
func (bh *BlockHeader) ToByte() []byte
ToByte converts the block header to bytes.
type Blockchain ¶
type Blockchain struct {
DB *bolt.DB // DB stored the blockchain
Tips []*Block // last block of all branches
BestTip *Block // last block of longest branch
}
Blockchain implements interactions with a DB.
func NewBlockchain ¶
func NewBlockchain(dbFile string, genesis *Block) *Blockchain
NewBlockchain creates a blockchain from DB file. If the file does not exist then it will be created and initialize a new blockchain with genesis block.
type Iterator ¶
type Iterator struct {
// contains filtered or unexported fields
}
Iterator is used to iterate over blockchain's blocks.
func NewIterator ¶
func NewIterator(bc *Blockchain, blockHash []byte) *Iterator
NewIterator returns a iterator with a start block.
Source Files
Directories