ブロックチェーン IoT シナリオにおける Golang 言語の応用の探求

// 定义智能合约
contract SupplyChain {
    // 商品结构体
    type Product struct {
        Name      string
        Origin    string
        Timestamp uint64
    }

    // 记录商品信息
    mapping(string) Product

    // 添加商品
    func addProduct(name string, origin string) {
        timestamp := uint64(time.Now().Unix())
        product := Product{name, origin, timestamp}
        products[name] = product
    }
}

// 定义资产管理应用程序
package main

import (
    "fmt"
    "github.com/hyperledger/fabric-sdk-go/pkg/client/channel"
)

func main() {
    // 连接到区块链网络
    client, err := channel.New(channel.WithUser("user"), channel.WithOrderer("orderer"))
    if err != nil {
        fmt.Println("Error connecting to the channel:", err)
        return
    }

    // 创建资产
    tx, err := client.Execute(channel.Request{
        ChaincodeID: "asset",
        Fcn:         "createAsset",
        Args:        []string{"asset1", "John Doe"},
    })
    if err != nil {
        fmt.Println("Error creating asset:", err)
        return
    }

    fmt.Println("Asset created:", tx.TransactionID)
}