本篇文章为大家展示了Go实现原理的示例分析，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。
前言：
简单原理代码描述
core: 块、 区块实现 main: example 运行
BlockMain 执行目录：
计算
安全
数据库
网络和加速
企业服务
package main
import "Chains/core"
func main() {
sc := core.NewBlockChain()
sc.SendData("send 1 btc to jacky")
sc.SendData("send 1 eos to jack")
sc.Print()
}Block 区块：
package core
import (
"crypto/sha256"
"encoding/hex"
"time"
)
type Block struct {
Index int64 //区块编号
Timestamp int64 //区块时间戳
PreBlockHash string //上一个区哈希值
Hash string //当前区块哈希值
Data string //区块数据
}
func calculateHash(b Block) string{
blockData := string(b.Index) + string(b.Timestamp) + b.PreBlockHash
hashInBytes := sha256.Sum256([]byte(blockData))
return hex.EncodeToString(hashInBytes[:])
}
func GenerateNewBlock(preBlock Block,data string) Block{
newBlock := Block{}
newBlock.Index = preBlock.Index + 1
newBlock.PreBlockHash = preBlock.Hash
newBlock.Timestamp = time.Now().Unix()
newBlock.Hash = calculateHash(newBlock)
return newBlock
}
func GenerateGenesisBlock() Block {
preBlock := Block{}
preBlock.Index = 1
preBlock.Hash = ""
return GenerateNewBlock(preBlock,"Genesies Block")
}
BlockChain 区块链如何实现
package core
import (
"log"
"fmt"
)
type BlockChain struct {
Blocks []*Block
}
func NewBlockChain() *BlockChain {
genesisBlock := GenerateGenesisBlock()
blockchain := BlockChain{}
blockchain.ApendBlock(&genesisBlock)
return &blockchain
}
func (bc *BlockChain) SendData(data string){
preBlock := bc.Blocks[len(bc.Blocks)-1 ]
newBlock := GenerateNewBlock(*preBlock,data)
bc.ApendBlock(&newBlock)
}
func (bc *BlockChain) ApendBlock(newBlock *Block){
if len(bc.Blocks) == 0{
bc.Blocks = append(bc.Blocks,newBlock)
return
}
if isValid(*newBlock,*bc.Blocks[len(bc.Blocks)-1]){
bc.Blocks = append(bc.Blocks,newBlock)
}else{
log.Fatal("invalid block")
}
}
func (bc *BlockChain) Print(){
for _,block := range bc.Blocks{
fmt.Printf("Index:%d\n",block.Index)
fmt.Printf("Pre.Hash:%s\n",block.PreBlockHash)
fmt.Printf("Curr.Hash:%s\n",block.Hash)
fmt.Printf("Data:%s\n",block.Data)
fmt.Printf("TimeStamp:%d\n",block.Timestamp)
}
}
func isValid(newBlock Block,oldBlack Block) bool{
if newBlock.Index - 1 != oldBlack.Index {
return false
}
if newBlock.PreBlockHash != oldBlack.Hash{
return false
}
if calculateHash(newBlock) != newBlock.Hash{
return false
}
return true
}上述内容就是Go实现原理的示例分析，你们学到知识或技能了吗？如果还想学到更多技能或者丰富自己的知识储备，欢迎关注亿速云行业资讯频道。
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原文链接：https://my.oschina.net/u/4143667/blog/3058149
