Fabric 超级账本学习【2】Fabric2.4网络环境下部署自己编写的go语言链码并实例化测试（手把手教学，步骤超详细）

启动Fabric2.4网络

搭建部署 Fabric2.4网络的具体教程可见我写的这篇博客：

Fabric 超级账本学习【4】Ububtu环境下部署搭建 Hyperledger Fabric2.4 (2.X）区块链网络

1、前提是搭建好了Fabric 2.4（Fabric2.x）版本的区块链网络，并在以此环境下部署自己编写的链码，如下图先进入 test-network 文件夹目录下

2、假如你之前开启过网络，先关闭网络，以免节点信息冲突，部署错误

./network.sh down

3、正式启动网络，部署网络命令以及成功截图如下

./network.sh up

如果想要同时启动CA服务器和couchdb，执行这条指令：

./network.sh up createChannel -ca -s couchdb

！！！！！！！！！假如启动失败如下，可能之前测试网络时出现重复或者已经存在的镜像，删除即可

docker ps -qa | xargs docker stop

docker ps -qa | xargs docker rm

4、接着在测试网络加入通道：

./network.sh createChannel

5、接下来就是部署自己的链码了

前期准备：先配置Go代理

go env -w GO111MODULE=on
go env -w GOPROXY=https://goproxy.cn,direct

执行 go env 查看配置代理后的环境变量，方便后续部署链码时下载相应的go环境

然后我们再 test-network 文件夹目录下 创建单独放置自己链码的 mychaincode 文件夹

把自己编写的 链码放进去 此目录下的 asset 文件夹下

！！！！！！！！！！！依次执行如下命令

go mod init

go mod tidy 

go mod vendor

执行如上命令后成功截图以及生成文件如下：

此时，我们的链码环境才算完成了！接下来就是链码的安装：回到test-network目录下：

如上学习部署链码指令，我们可以执行自己的链码命令进行部署如下：

./network.sh deployCC -ccn asseth -ccp ./mychaincode/asset -ccl go

可以看得到链码成功部署！！！！

在fabric2.x版本中默认是不需要实例化链码了，所以直接调用invoke即可,首先配置一下环境变量

export PATH=${
    
    PWD}/../bin:$PATH
export FABRIC_CFG_PATH=$PWD/../config/
export CORE_PEER_TLS_ENABLED=true
export CORE_PEER_LOCALMSPID="Org1MSP" 
export CORE_PEER_TLS_ROOTCERT_FILE=${
    
    PWD}/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt
export CORE_PEER_MSPCONFIGPATH=${
    
    PWD}/organizations/peerOrganizations/org1.example.com/users/[email protected]/msp
export CORE_PEER_ADDRESS=localhost:7051

调用Go编写的链码

1、根据链码写执行初始化链码的脚本，可见初始化可以传入三个参数

编写执行初始化链码的脚本

peer chaincode invoke -o localhost:7050 --ordererTLSHostnameOverride orderer.example.com --tls --cafile "${
     
     PWD}/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem" -C mychannel -n asseth --peerAddresses localhost:7051 --tlsRootCertFiles "${
     
     PWD}/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt" --peerAddresses localhost:9051 --tlsRootCertFiles "${
     
     PWD}/organizations/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt" -c '{"function":"initLedger","Args":["asseth","hp","666"]}'

2、查询区块链中所有资产信息

peer chaincode invoke -o localhost:7050 --ordererTLSHostnameOverride orderer.example.com --tls --cafile "${
     
     PWD}/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem" -C mychannel -n asseth --peerAddresses localhost:7051 --tlsRootCertFiles "${
     
     PWD}/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt" --peerAddresses localhost:9051 --tlsRootCertFiles "${
     
     PWD}/organizations/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt" -c '{"Args":["getAllAssets"]}'

3、查询区块链中单个资产 asset1 信息

peer chaincode invoke -o localhost:7050 --ordererTLSHostnameOverride orderer.example.com --tls --cafile "${
     
     PWD}/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem" -C mychannel -n asseth --peerAddresses localhost:7051 --tlsRootCertFiles "${
     
     PWD}/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt" --peerAddresses localhost:9051 --tlsRootCertFiles "${
     
     PWD}/organizations/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt" -c '{"function":"ReadAsset","Args":["asset1"]}'

成功查询单个资产 asset1 全部信息

4、向区块链中写入新的资产信息

peer chaincode invoke -o localhost:7050 --ordererTLSHostnameOverride orderer.example.com --tls --cafile "${
     
     PWD}/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem" -C mychannel -n asseth --peerAddresses localhost:7051 --tlsRootCertFiles "${
     
     PWD}/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt" --peerAddresses localhost:9051 --tlsRootCertFiles "${
     
     PWD}/organizations/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt" -c '{"function":"CreateAsset","Args":["asset666","金智秀","66666"]}'

成功写入新的资产！！！！

再次查询所有资产信息可以看到之前新写入的资产信息均存在

5、判断资产是否存在

peer chaincode invoke -o localhost:7050 --ordererTLSHostnameOverride orderer.example.com --tls --cafile "${
     
     PWD}/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem" -C mychannel -n asseth --peerAddresses localhost:7051 --tlsRootCertFiles "${
     
     PWD}/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt" --peerAddresses localhost:9051 --tlsRootCertFiles "${
     
     PWD}/organizations/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt" -c '{"function":"AssetExists","Args":["asset888666"]}'

可以判断 资产 ID 为 asset888666 的资产存在！！！！

访问couchdb 查询区块数据

localhost:5984/_utils   

资产信息已存在 CouchDB 中

PS 同一通道可以部署多个链码

部署如下链码

./network.sh deployCC -ccn lianma -ccp ./mychaincode/lianma -ccl go

实例化链码

peer chaincode invoke -o localhost:7050 --ordererTLSHostnameOverride orderer.example.com --tls --cafile "${
     
     PWD}/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem" -C mychannel -n lianma --peerAddresses localhost:7051 --tlsRootCertFiles "${
     
     PWD}/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt" --peerAddresses localhost:9051 --tlsRootCertFiles "${
     
     PWD}/organizations/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt" -c '{"function":"InitLedger","Args":[]}'

可以看到之前两条链码的数据都上链了