快速带你上手Hyperledger Fabric环境搭建+开发测试

这篇文章主要介绍了快速带你上手Hyperledger Fabric环境搭建+开发测试 ,文中通过代码以及文档配合进行讲解,很详细,它对在座的每个人的研究和工作具有很经典的参考价值。 如果需要,让我们与区块链资料网一起学习。

https://www.interchains.cc/17321.html

快速带你上手Hyperledger Fabric环境搭建+开发测试是很好的区块链资料,他说明了区块链当中的经典原理,可以给我们提供资料,快速带你上手Hyperledger Fabric环境搭建+开发测试学习起来其实是很简单的,

不多的几个较为抽象的概念也很容易理解,之所以很多人感觉快速带你上手Hyperledger Fabric环境搭建+开发测试比较复杂,一方面是因为大多数的文档没有做到由浅入深地讲解,概念上没有注意先后顺序,给读者的理解带来困难

快速带你上手Hyperledger Fabric环境搭建+开发测试

  • 链码开发
  • Fabric
  • 环境搭建

本文采用virtualbox+vagrant方式搭建Hyperledger Fabric环境,采用VSCode远程开发模式开发调试链码和客户端程序。

快速带你上手Hyperledger Fabric环境搭建+开发测试

jasonruan 2020.04.20

1 前言

本文采用virtualbox+vagrant方式搭建Hyperledger Fabric环境,采用VSCode远程开发模式开发调试链码和客户端程序。

2 环境搭建

2.1 搭建虚拟机环境

2.1.1 生成配置文件

使用版本:Ubuntu 18.04 LTS

执行以下命令后,将生成Vagrantfile配置文件

$ vagrant init ubuntu/bionic64

2.1.2 指定虚拟机名称

修改Vagrantfile配置文件,增加如下内容:

  config.vm.provider "virtualbox" do |v|       v.name = "js-fabric"   end

2.1.3 拉取镜像并启动

根据配置文件拉取镜像并创建Ubuntu18.04虚拟机

$ vagrant up

Virtualbox看到虚拟机已启动

快速带你上手Hyperledger Fabric环境搭建+开发测试

2.1.4 登录虚拟机

(2020-04-14 12:44:40) [jason@RUAN:~/Vagrant/js-fabric]$ vagrant ssh Welcome to Ubuntu 18.04.4 LTS (GNU/Linux 4.15.0-96-generic x86_64)  vagrant@ubuntu-bionic:~$ 

2.2 安装依赖工具

2.2.1 go

vagrant@ubuntu-bionic:~/Soft$ wget https://dl.google.com/go/go1.14.2.linux-amd64.tar.gz  vagrant@ubuntu-bionic:~/Soft$ sudo tar -zxvf go1.14.2.linux-amd64.tar.gz -C /opt  vagrant@ubuntu-bionic:~/Soft$ echo "export GOROOT=/opt/go" >> ~/.bashrc vagrant@ubuntu-bionic:~/Soft$ echo "export GOPATH=/opt/gopath" >> ~/.bashrc vagrant@ubuntu-bionic:~/Soft$ echo "export PATH=$GOROOT/bin:$GOPATH/bin:$PATH" >>  ~/.bashrc  vagrant@ubuntu-bionic:~/Soft$ . ~/.bashrc   vagrant@ubuntu-bionic:~/Soft$ go version go version go1.14.2 linux/amd64

2.2.2 docker

vagrant@ubuntu-bionic:~/Soft$ curl -fsSL https://get.docker.com -o get-docker.sh vagrant@ubuntu-bionic:~/Soft$ sudo sh get-docker.sh  vagrant@ubuntu-bionic:~/Soft$ sudo usermod -aG docker $USER vagrant@ubuntu-bionic:~/Soft$ sudo systemctl restart docker vagrant@ubuntu-bionic:~$ docker version Client: Docker Engine - Community  Version:           19.03.8  API version:       1.40  Go version:        go1.12.17  Git commit:        afacb8b7f0  Built:             Wed Mar 11 01:25:46 2020  OS/Arch:           linux/amd64  Experimental:      false  Server: Docker Engine - Community  Engine:   Version:          19.03.8   API version:      1.40 (minimum version 1.12)   Go version:       go1.12.17   Git commit:       afacb8b7f0   Built:            Wed Mar 11 01:24:19 2020   OS/Arch:          linux/amd64   Experimental:     false  containerd:   Version:          1.2.13   GitCommit:        7ad184331fa3e55e52b890ea95e65ba581ae3429  runc:   Version:          1.0.0-rc10   GitCommit:        dc9208a3303feef5b3839f4323d9beb36df0a9dd  docker-init:   Version:          0.18.0   GitCommit:        fec3683

2.2.3 docker-compose

vagrant@ubuntu-bionic:~$ sudo curl -L "https://github.com/docker/compose/releases/download/1.25.4/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose  vagrant@ubuntu-bionic:~$ sudo chmod 755 /usr/local/bin/docker-compose  vagrant@ubuntu-bionic:~$ docker-compose --version docker-compose version 1.25.4, build 8d51620a

2.3 官方样例部署

官方样例:https://github.com/hyperledger/fabric-samples

2.3.1 源码及镜像下载

  • 下载源码
vagrant@ubuntu-bionic:~$ mkdir -p $GOPATH/src/github.com/hyperledger vagrant@ubuntu-bionic:~$ cd $GOPATH/src/github.com/hyperledger vagrant@ubuntu-bionic:/opt/gopath/src/github.com/hyperledger$ git clone https://github.com/hyperledger/fabric-samples.git
  • 切换分支
[vagrant@RUAN:/opt/gopath/src/github.com/hyperledger/fabric-samples] (master)$ git checkout -b v1.4.6 v1.4.6 Switched to a new branch 'v1.4.6'
  • 下载引导脚本
[vagrant@RUAN:/opt/gopath/src/github.com/hyperledger/fabric-samples] (v1.4.6)$ curl -sS https://raw.githubusercontent.com/hyperledger/fabric/master/scripts/bootstrap.sh -o ./scripts/bootstrap.sh  [vagrant@RUAN:/opt/gopath/src/github.com/hyperledger/fabric-samples] (v1.4.6)$ chmod +x scripts/bootstrap.sh
  • 下载必备二进制文件和docker镜像
# ./scripts/bootstrap.sh [version] [ca version] [thirdparty_version] [vagrant@RUAN:/opt/gopath/src/github.com/hyperledger/fabric-samples] (v1.4.6)$ ./scripts/bootstrap.sh 1.4.6 1.4.6 0.4.18 -s

具体流程:

  • 下载Hyperledger Fabric二进制包:
===> Downloading version 1.4.6 platform specific fabric binaries ===> Downloading:  https://github.com/hyperledger/fabric/releases/download/v1.4.6/hyperledger-fabric-linux-amd64-1.4.6.tar.gz  ===> Downloading version 1.4.6 platform specific fabric-ca-client binary ===> Downloading:  https://github.com/hyperledger/fabric-ca/releases/download/v1.4.6/hyperledger-fabric-ca-linux-amd64-1.4.6.tar.gz
  • 拉取Hyperledger Fabric Docker镜像:
Pull Hyperledger Fabric docker images FABRIC_IMAGES: peer orderer ccenv tools javaenv ===> Pulling fabric Images  ====> hyperledger/fabric-peer:1.4.6 1.4.6: Pulling from hyperledger/fabric-peer  ====> hyperledger/fabric-orderer:1.4.6 1.4.6: Pulling from hyperledger/fabric-orderer  ====> hyperledger/fabric-ccenv:1.4.6 1.4.6: Pulling from hyperledger/fabric-ccenv  ====> hyperledger/fabric-tools:1.4.6 1.4.6: Pulling from hyperledger/fabric-tools  ====> hyperledger/fabric-javaenv:1.4.6 1.4.6: Pulling from hyperledger/fabric-javaenv  ====> hyperledger/fabric-ca:1.4.6 1.4.6: Pulling from hyperledger/fabric-ca  ===> Pulling thirdparty docker images ====> hyperledger/fabric-zookeeper:0.4.18 0.4.18: Pulling from hyperledger/fabric-zookeeper  ====> hyperledger/fabric-kafka:0.4.18 0.4.18: Pulling from hyperledger/fabric-kafka  ====> hyperledger/fabric-couchdb:0.4.18 0.4.18: Pulling from hyperledger/fabric-couchdb  ===> List out hyperledger docker images hyperledger/fabric-javaenv     1.4                 68914607b3a5        6 weeks ago         1.68GB hyperledger/fabric-javaenv     1.4.6               68914607b3a5        6 weeks ago         1.68GB hyperledger/fabric-javaenv     latest              68914607b3a5        6 weeks ago         1.68GB hyperledger/fabric-ca          1.4                 3b96a893c1e4        7 weeks ago         150MB hyperledger/fabric-ca          1.4.6               3b96a893c1e4        7 weeks ago         150MB hyperledger/fabric-ca          latest              3b96a893c1e4        7 weeks ago         150MB hyperledger/fabric-tools       1.4                 0f9743ac0662        7 weeks ago         1.49GB hyperledger/fabric-tools       1.4.6               0f9743ac0662        7 weeks ago         1.49GB hyperledger/fabric-tools       latest              0f9743ac0662        7 weeks ago         1.49GB hyperledger/fabric-ccenv       1.4                 191911f4454f        7 weeks ago         1.36GB hyperledger/fabric-ccenv       1.4.6               191911f4454f        7 weeks ago         1.36GB hyperledger/fabric-ccenv       latest              191911f4454f        7 weeks ago         1.36GB hyperledger/fabric-orderer     1.4                 84eaba5388e7        7 weeks ago         120MB hyperledger/fabric-orderer     1.4.6               84eaba5388e7        7 weeks ago         120MB hyperledger/fabric-orderer     latest              84eaba5388e7        7 weeks ago         120MB hyperledger/fabric-peer        1.4                 5a52faa5d8c2        7 weeks ago         128MB hyperledger/fabric-peer        1.4.6               5a52faa5d8c2        7 weeks ago         128MB hyperledger/fabric-peer        latest              5a52faa5d8c2        7 weeks ago         128MB hyperledger/fabric-zookeeper   0.4                 ede9389347db        5 months ago        276MB hyperledger/fabric-zookeeper   0.4.18              ede9389347db        5 months ago        276MB hyperledger/fabric-zookeeper   latest              ede9389347db        5 months ago        276MB hyperledger/fabric-kafka       0.4                 caaae0474ef2        5 months ago        270MB hyperledger/fabric-kafka       0.4.18              caaae0474ef2        5 months ago        270MB hyperledger/fabric-kafka       latest              caaae0474ef2        5 months ago        270MB hyperledger/fabric-couchdb     0.4                 d369d4eaa0fd        5 months ago        261MB hyperledger/fabric-couchdb     0.4.18              d369d4eaa0fd        5 months ago        261MB hyperledger/fabric-couchdb     latest              d369d4eaa0fd        5 months ago        261MB

2.3.2 官方first-network网络部署

  • 进入对应目录
[vagrant@RUAN:~]$ cd /opt/gopath/src/github.com/hyperledger/fabric-samples/first-network
  • 启动网络
[vagrant@RUAN:/opt/gopath/src/github.com/hyperledger/fabric-samples/first-network] (v1.4.6)$ ./byfn.sh up -c jschannel 。。。。。。 ========= All GOOD, BYFN execution completed =========== 

启动错误处理:

  • 如遇到错误:
2020-04-16 04:24:25.272 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 002 Using default vscc Error: could not assemble transaction, err proposal response was not successful, error code 500, msg error starting container: error starting container: Get https://registry-1.docker.io/v2/hyperledger/fabric-baseos/manifests/amd64-0.4.18: Get https://auth.docker.io/token?scope=repository%3Ahyperledger%2Ffabric-baseos%3Apull&service=registry.docker.io: net/http: TLS handshake timeout !!!!!!!!!!!!!!! Chaincode instantiation on peer0.org2 on channel 'jschannel' failed !!!!!!!!!!!!!!!! ========= ERROR !!! FAILED to execute End-2-End Scenario ===========
  • 添加docker国内镜像
$ cat /etc/docker/daemon.json  {   "registry-mirrors": ["https://registry.docker-cn.com"] }
  • 加载&重启
$ sudo systemctl daemon-reload $ sudo systemctl restart docker
  • 清理网络
[vagrant@RUAN:/opt/gopath/src/github.com/hyperledger/fabric-samples/first-network] (v1.4.6)$ ./byfn.sh down

3 开发测试

以下将使用VSCode远程开发模式,连接我们前面启动的Fabric网络进行远程开发。

为了可以找到完整依赖,还需要下载fabricfabric-sdk-go项目源码,并切换到恰当的分支:

[vagrant@RUAN:/opt/gopath/src/github.com/hyperledger]$ git clone https://github.com/hyperledger/fabric.git [vagrant@RUAN:/opt/gopath/src/github.com/hyperledger]$ git checkout -b v1.4.6 v1.4.6  [vagrant@RUAN:/opt/gopath/src/github.com/hyperledger/fabric] (master)$ git clone https://github.com/hyperledger/fabric-sdk-go.git

3.1 链码开发

3.1.1 功能说明

本链码实现了一个购物积分平台,拥有如下功能:

  • 初始化平台管理员拥有10000积分
  • 用户注册,将会得到100积分奖励
  • 用户之间可以互转积分

3.1.2 链码开发

3.1.2.1 工程创建

[vagrant@RUAN:/opt/gopath/src/github.com/hyperledger/fabric-samples/chaincode] (v1.4.6)$ cd ptcc/ [vagrant@RUAN:/opt/gopath/src/github.com/hyperledger/fabric-samples/chaincode/ptcc] (v1.4.6)$ go mod init ptcc [vagrant@RUAN:/opt/gopath/src/github.com/hyperledger/fabric-samples/chaincode/ptcc] (v1.4.6)$ go get github.com/hyperledger/fabric@v1.4.6

3.1.2.2 链码开发

package main  import (     "fmt"     "strconv"      "github.com/hyperledger/fabric/core/chaincode/shim"     pb "github.com/hyperledger/fabric/protos/peer" )  // PointsTransferChaincode => 声明积分转移智能合约结构体 type PointsTransferChaincode struct { }  // Init => 链码初始化接口 func (t *PointsTransferChaincode) Init(stub shim.ChaincodeStubInterface) pb.Response {     args := stub.GetStringArgs()     if len(args) != 2 {         return shim.Error("初始化参数个数不匹配")     }      err := stub.PutState(args[0], []byte(args[1]))     if err != nil {         return shim.Error("积分管理员初始化失败")     }      return shim.Success(nil) }  // Invoke => 链码调用接口 func (t *PointsTransferChaincode) Invoke(stub shim.ChaincodeStubInterface) pb.Response {     function, args := stub.GetFunctionAndParameters()     if function == "transfer" {         return t.transfer(stub, args)     } else if function == "query" {         return t.query(stub, args)     }      return shim.Error("无效交易方法,仅支持:transfer|query") }  func (t *PointsTransferChaincode) transfer(stub shim.ChaincodeStubInterface, args []string) pb.Response {     outUser := args[0]     inUser := args[1]     offsetVal, _ := strconv.Atoi(args[2])      outUserPointBalanceByte, _ := stub.GetState(outUser)     outUserPointBalance, _ := strconv.Atoi(string(outUserPointBalanceByte))      inUserPointBalanceByte, _ := stub.GetState(inUser)     inUserPointBalance, _ := strconv.Atoi(string(inUserPointBalanceByte))      outUserPointBalance = outUserPointBalance - offsetVal     inUserPointBalance = inUserPointBalance + offsetVal      err := stub.PutState(outUser, []byte(strconv.Itoa(outUserPointBalance)))     if err != nil {         return shim.Error(err.Error())     }      err = stub.PutState(inUser, []byte(strconv.Itoa(inUserPointBalance)))     if err != nil {         return shim.Error(err.Error())     }      return shim.Success(nil) }  func (t *PointsTransferChaincode) query(stub shim.ChaincodeStubInterface, args []string) pb.Response {     userPointsBalance, _ := stub.GetState(args[0])     if userPointsBalance == nil {         return shim.Error("查询账户余额失败")     }      return shim.Success(userPointsBalance) }  func main() {     err := shim.Start(new(PointsTransferChaincode))     if err != nil {         fmt.Printf("积分转移链码启动失败: %sn", err)     } }

3.1.2.3 编写测试用例

package main  import (     "fmt"     "testing"      "github.com/hyperledger/fabric/core/chaincode/shim" )  func checkInit(t *testing.T, stub *shim.MockStub) {     args := [][]byte{[]byte("Jason"), []byte("10000")}     res := stub.MockInit("初始化交易", args)     if res.Status == shim.OK {         fmt.Println("Init success :)")     } else {         fmt.Println("Init failed :(")         t.FailNow()     } }  func checkPointsTransfer(t *testing.T, stub *shim.MockStub, arg1, arg2, arg3 string) {     args := [][]byte{[]byte("transfer"), []byte(arg1), []byte(arg2), []byte(arg3)}     res := stub.MockInvoke("积分转移交易", args)     if res.Status == shim.OK {         fmt.Printf("%s转给%s %s积分交易成功:)n", arg1, arg2, arg3)     } else {         fmt.Printf("%s转给%s %s积分交易失败:(n", arg1, arg2, arg3)         t.FailNow()     } }  func checkQueryBalance(t *testing.T, stub *shim.MockStub, username string) {     args := [][]byte{[]byte("query"), []byte(username)}     res := stub.MockInvoke("用户积分查询", args)     if res.Status == shim.OK {         fmt.Printf("%s查询积分交易成功,积分为:%sn", username, res.GetPayload())     } else {         fmt.Printf("%s查询积分交易失败n", username)         t.FailNow()     } }  func Test_PTCC(t *testing.T) {     stub := shim.NewMockStub("ptcc", new(PointsTransferChaincode))     checkInit(t, stub)     checkPointsTransfer(t, stub, "Jason", "XX", "100")     checkPointsTransfer(t, stub, "Jason", "YY", "100")     checkPointsTransfer(t, stub, "XX", "YY", "10")     checkQueryBalance(t, stub, "Jason")     checkQueryBalance(t, stub, "XX")     checkQueryBalance(t, stub, "YY")      // === RUN   Test_PTCC     // Init success :)     // Jason转给XX 100积分交易成功:)     // Jason转给YY 100积分交易成功:)     // XX转给YY 10积分交易成功:)     // Jason查询积分交易成功,积分为:9800     // XX查询积分交易成功,积分为:90     // YY查询积分交易成功,积分为:110     // --- PASS: Test_PTCC (0.00s)     // PASS     // ok   ptcc    0.029s     // Success: Tests passed. }

TIPS:开启VSCode保存即测试是个不错的选择:

快速带你上手Hyperledger Fabric环境搭建+开发测试

3.1.3 链码部署

我们直接将其部署到前面启动的官方first-network网络。

3.1.3.1 安装链码

# 进入工具容器 $ docker exec -it cli bash  # 进入链码所在路径 root@ce34ec1e55ae:/opt/gopath/src/github.com/hyperledger/fabric/peer# cd /opt/gopath/src/github.com/chaincode/ptcc  # 执行安装链码命令 ## 组织1的peer节点安装 root@ce34ec1e55ae:/opt/gopath/src# peer chaincode install -n ptcc -v 2.0 -l golang -p github.com/chaincode/ptcc  2020-04-17 04:29:09.820 UTC [chaincodeCmd] install -> INFO 003 Installed remotely response:<status:200 payload:"OK" >   ## 组织2的peer节点安装 export CORE_PEER_LOCALMSPID=Org2MSP export CORE_PEER_TLS_ROOTCERT_FILE=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt export CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org2.example.com/users/Admin@org2.example.com/msp export CORE_PEER_ADDRESS=peer0.org2.example.com:9051 export CORE_PEER_TLS_KEY_FILE=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/server.key export CORE_PEER_TLS_CERT_FILE=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/server.crt export CORE_PEER_TLS_ENABLED=true export CORE_PEER_ID=cli root@ce34ec1e55ae:/opt/gopath/src# peer chaincode install -n ptcc -v 2.0 -l golang -p github.com/chaincode/ptcc  2020-04-17 06:46:16.719 UTC [chaincodeCmd] install -> INFO 003 Installed remotely response:<status:200 payload:"OK" > 

3.1.3.2 实例化链码

root@ce34ec1e55ae:/opt/gopath/src# peer chaincode instantiate -o orderer.example.com:7050 --tls true --cafile /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem -C jschannel -n ptcc -l golang -v 2.0 -c '{"Args":["Jason","10000"]}' -P 'AND ('''Org1MSP.peer''','''Org2MSP.peer''')' 2020-04-17 04:53:04.776 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 001 Using default escc 2020-04-17 04:53:04.777 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 002 Using default vscc

3.1.3.3 链码容器

链码实例化后,将会启动一个链码容器:

IMAGE:dev-peer0.org1.example.com-ptcc-2.0-e3487c2ca0e68959525d94a4bd69896f99c169db1e3d031d4650a9e74d568d4d  NAMES:dev-peer0.org1.example.com-ptcc-2.0

3.1.4 链码调用

  • 管理员余额查看
root@ce34ec1e55ae:/opt/gopath/src# peer chaincode query -C jschannel -n ptcc -c '{"Args":["query","Jason"]}' 10000
  • 管理员给XX用户发放100积分
root@ce34ec1e55ae:/opt/gopath/src# peer chaincode invoke -o orderer.example.com:7050 --tls true --cafile /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem -C jschannel -n ptcc --peerAddresses peer0.org1.example.com:7051 --tlsRootCertFiles /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt --peerAddresses peer0.org2.example.com:9051 --tlsRootCertFiles /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt -c '{"Args":["transfer","Jason","XX","100"]}'  2020-04-17 06:47:25.599 UTC [chaincodeCmd] chaincodeInvokeOrQuery -> INFO 001 Chaincode invoke successful. result: status:200 
  • 管理员给YY用户发放100积分
root@ce34ec1e55ae:/opt/gopath/src# peer chaincode invoke -o orderer.example.com:7050 --tls true --cafile /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem -C jschannel -n ptcc --peerAddresses peer0.org1.example.com:7051 --tlsRootCertFiles /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt --peerAddresses peer0.org2.example.com:9051 --tlsRootCertFiles /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt -c '{"Args":["transfer","Jason","YY","100"]}'  2020-04-17 06:48:18.142 UTC [chaincodeCmd] chaincodeInvokeOrQuery -> INFO 001 Chaincode invoke successful. result: status:200
  • 用户XX给用户YY转账10积分
root@ce34ec1e55ae:/opt/gopath/src# peer chaincode invoke -o orderer.example.com:7050 --tls true --cafile /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem -C jschannel -n ptcc --peerAddresses peer0.org1.example.com:7051 --tlsRootCertFiles /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt --peerAddresses peer0.org2.example.com:9051 --tlsRootCertFiles /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt -c '{"Args":["transfer","XX","YY","10"]}' 2020-04-17 06:49:15.393 UTC [chaincodeCmd] chaincodeInvokeOrQuery -> INFO 001 Chaincode invoke successful. result: status:200 
  • 分别查看用户当前积分情况
root@ce34ec1e55ae:/opt/gopath/src# peer chaincode query -C jschannel -n ptcc -c '{"Args":["query","Jason"]}' 9800 root@ce34ec1e55ae:/opt/gopath/src# peer chaincode query -C jschannel -n ptcc -c '{"Args":["query","XX"]}' 90 root@ce34ec1e55ae:/opt/gopath/src# peer chaincode query -C jschannel -n ptcc -c '{"Args":["query","YY"]}' 110

3.2 客户端SDK开发

3.2.1 功能说明

fabric提供Go、Java、Node的SDK,本节使用Go的SDK开发客户端程序调用前面部署好的链码。

3.2.2 模块开发

3.2.2.1 工程创建

[vagrant@RUAN:/opt/gopath/src/client]$ go mod init client go: creating new go.mod: module client  # 注:这里需要使用master,默认使用v1.0.0-beta1版本,没有所需的这个库:fabric-sdk-go/pkg/gateway [vagrant@RUAN:/opt/gopath/src/client]$ go get github.com/hyperledger/fabric-sdk-go@master go: github.com/hyperledger/fabric-sdk-go master => v1.0.0-beta1.0.20200416003947-f7729f181cbf go: downloading github.com/hyperledger/fabric-sdk-go v1.0.0-beta1.0.20200416003947-f7729f181cbf

3.2.2.2 模块开发

package client  import (     "log"      "github.com/hyperledger/fabric-sdk-go/pkg/core/config"     "github.com/hyperledger/fabric-sdk-go/pkg/fabsdk"     "github.com/hyperledger/fabric-sdk-go/pkg/gateway" )  // NewContract => 创建Fabric网络交互对象 func NewContract() *gateway.Contract {     // 需要修改该配置的channelName为jschannel     configPath := "/opt/gopath/src/github.com/hyperledger/fabric-sdk-go/pkg/gateway/testdata/connection-tls.json"     channelName := "jschannel"     chaincodeName := "ptcc"      // 创建SDK操作对象     sdk, err := fabsdk.New(config.FromFile(configPath))     if err != nil {         log.Fatalf("fabsdk new failed, %s", err.Error())     }     gw, err := gateway.Connect(gateway.WithSDK(sdk), gateway.WithUser("Admin"))     if err != nil {         log.Fatalf("gateway connect failed, %s", err.Error())     }     defer gw.Close()      network, err := gw.GetNetwork(channelName)     if err != nil {         log.Fatalf("gw get network failed, %s", err.Error())     }      return network.GetContract(chaincodeName) }  func transfer(contract *gateway.Contract) error {     _, err := contract.SubmitTransaction("transfer", "XX", "YY", "10")     if err != nil {         return err     }      return nil }  func query(contract *gateway.Contract, key string) string {     resp, err := contract.EvaluateTransaction("query", key)     if err != nil {         log.Fatalf("query failed, %s", err.Error())     }      return string(resp) }

3.2.2.3 测试用例编写

package client  import (     "fmt"     "testing"     "time" )  func Test_TransferAndQuery(t *testing.T) {     contract := NewContract()     valueA := query(contract, "XX")     valueB := query(contract, "YY")     fmt.Printf("转账前 XX=%s YY=%sn", valueA, valueB)      err := transfer(contract)     if err != nil {         fmt.Printf("转出接口测试失败, %sn", err.Error())         t.FailNow()     }      fmt.Println("a给b转账10元执行成功!")     time.Sleep(2 * time.Second)      valueA = query(contract, "XX")     valueB = query(contract, "YY")     fmt.Printf("转账前 XX=%s YY=%sn", valueA, valueB) }

3.2.3 链码调用

  • 导入客户端连接fabric所需证书
[vagrant@RUAN:/opt/gopath/src/github.com/hyperledger/fabric-sdk-go/test/fixtures/fabric/v1] (master)$ ln -s /opt/gopath/src/github.com/hyperledger/fabric-samples/first-network/crypto-config .
  • 配置hosts
127.0.0.1       peer0.org1.example.com  127.0.0.1       peer1.org1.example.com  127.0.0.1       peer0.org2.example.com  127.0.0.1       peer1.org2.example.com  127.0.0.1       orderer.example.com
  • 执行测试命令
[vagrant@RUAN:/opt/gopath/src/client]$ go test 转账前 XX=90 YY=110 a给b转账10元执行成功! 转账前 XX=80 YY=120 PASS ok      client  4.858s

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