简介
Hyperledger是Linux 基金会主导的一个开源的区块链(BlockChain)项目. 本文介绍了一个简单的Hyperledger智能合约的开发过程.
开发环境
本文使用Docker作为Hyperledger智能合约的本地开发环境.
第一步
从Docker官网http://www.docker.com/下载其安装包，并安装Docker.
第二步
启动Docker QuickStarter Terminal并运行如下命令在Docker中安装Hyperledger Fabric.
docker pull hyperledger/fabric-peer:latest docker pull hyperledger/fabric-membersrvc:latest
第三步
在工作目录下创建如下的docker-compose.yml
membersrvc: image: hyperledger/fabric-membersrvc ports: - "7054:7054" command: membersrvc vp0: image: hyperledger/fabric-peer ports: - "7050:7050" - "7051:7051" - "7053:7053" environment: - CORE_PEER_ADDRESSAUTODETECT=true - CORE_VM_ENDPOINT=unix:///var/run/docker.sock - CORE_LOGGING_LEVEL=DEBUG - CORE_PEER_ID=vp0 - CORE_PEER_PKI_ECA_PADDR=membersrvc:7054 - CORE_PEER_PKI_TCA_PADDR=membersrvc:7054 - CORE_PEER_PKI_TLSCA_PADDR=membersrvc:7054 - CORE_SECURITY_ENABLED=true - CORE_SECURITY_ENROLLID=test_vp0 - CORE_SECURITY_ENROLLSECRET=MwYpmSRjupbT links: - membersrvc command: sh -c "sleep 5; peer node start --peer-chaincodedev"然后在Docker QuickStarter Terminal中运行以下命令以启动Hyperledger Fabric
docker-compose up
第四步
安装并运行SSH客户端，例如putty或mRemoteNG, 使用以下信息连接Docker
host : 192.168.99.100 user name : docker password : tcuser
第五步
运行如下命令以确认Hyperledger Fabric的进程
docker ps运行如下命令以进入Hyperledger Fabric环境
docker exec -it hyperledger_vp0_1 bash
第六步
运行如下命令从git下载Hyperledger Fabric源代码
mkdir -p $GOPATH/src/github.com/hyperledger cd $GOPATH/src/github.com/hyperledger git clone http://gerrit.hyperledger.org/r/fabric第七步
运行如下命令创建HelloWorld目录
mkdir -p $GOPATH/src/github.com/HelloWorld/ cd $GOPATH/src/github.com/HelloWorld/创建如下HelloWorld.go文件
package main import ( "errors" "fmt" "strconv" "github.com/hyperledger/fabric/core/chaincode/shim" ) type HelloWorldChaincode struct { } func (t *HelloWorldChaincode) Init(stub shim.ChaincodeStubInterface, function string, args []string) ([]byte, error) { fmt.Printf("HelloWorld - Init called with function %s!\n", function) return nil, nil } func (t *HelloWorldChaincode) Invoke(stub shim.ChaincodeStubInterface, function string, args []string) ([]byte, error) { fmt.Printf("HelloWorld - Invoke called with function %s!\n", function) return nil, nil } func (t *HelloWorldChaincode) Query(stub shim.ChaincodeStubInterface, function string, args []string) ([]byte, error) { fmt.Printf("HelloWorld - Query called with function %s!\n", function) message := "Hello World" return []byte(message), nil; } func main() { err := shim.Start(new(HelloWorldChaincode)) if err != nil { fmt.Printf("Error starting Hello World chaincode: %s", err) } }使用如下命令编译代码
go build ./ 第八步
使用如下命令运行HelloWorld
export CORE_CHAINCODE_ID_NAME=mycc export CORE_PEER_ADDRESS=0.0.0.0:7051 ./HelloWorld &
第九步
向Hyperledger服务接口http://192.168.99.100:7050/registrar 发送如下REST请求，使用内置的jim用户登录系统
{ "enrollId": "jim", "enrollSecret": "6avZQLwcUe9b" }第十步
向Hyperledger服务接口http://192.168.99.100:7050/chaincode 发送如下初始化HelloWorld的REST请求
{ "jsonrpc": "2.0", "method": "deploy", "params": { "type": 1, "chaincodeID":{ "name": "mycc" }, "ctorMsg": { "function":"init", "args":[] }, "secureContext": "jim" }, "id": 1 }调用HelloWorld的REST请求
{ "jsonrpc": "2.0", "method": "invoke", "params": { "type": 1, "chaincodeID":{ "name":"mycc" }, "ctorMsg": { "function":"invoke", "args":[] }, "secureContext": "jim" }, "id": 3 } 以及查询HelloWorld的REST请求
{ "jsonrpc": "2.0", "method": "query", "params": { "type": 1, "chaincodeID":{ "name":"mycc" }, "ctorMsg": { "function":"query", "args":[] }, "secureContext": "jim" }, "id": 5 }
总结
本文介绍了一个简单的Hyperledger智能合约在本地Docker环境下的开发过程.
http://www.cnblogs.com/huyouhengbc/p/5934683.html#3545114
