一.检查配置环境
检查虚拟机环境,确保有正在运行的Hyperledger Fabric区块链,并且其中chaincode_basic、credit_chaincode链码可以正常调用
查看chaincode_basic、credit_chaincode链码调用
二.开发征信链码代码
基于现有征信链码,++开发征信链码的升级版++,使用chaincode-init文件夹中的基础链码模板,创建完善其中lib目录以及index.js内容,在lib中创建CreditPlusContract对象,在对象中添加createCreditSubjectPlus功能,实现征信主体的保存,定义subject变量属性包括(key:征信主体主键, organizationName:征信主体评价机构名, type:评价类型,score:征信积分,creator:创建人,datetime:评价时间),其中属性除score外其余都为string类型。将subject内容上链保存
在链码中添加征信主体查询功能(queryCreditSubjectPlus),要求能够查询所有主体内容(包括:key:征信主体主键, organizationName:征信主体评价机构名, type:评价类型,score:征信积分,creator:创建人,datetime:评价时间)
javascript
'use strict';
const { Contract } = require("fabric-contract-api");
class CreditPlusContract extends Contract {
async createCreditSubjectPlus(ctx, key, organizationName, type, creator, datetime) {
console.info('=== START:创建征信主体 ===');
const subject = {
key: key,
organizationName: organizationName,
type: type,
score: 0,
creator: creator,
datetime: datetime
};
await ctx.stub.putState(key, Buffer.from(JSON.stringify(subject)));
console.info('=== END:创建征信主体 ===');
return subject;
}
// 查询征信主体
async queryCreditSubjectPlus(ctx, subjectKey) {
console.info('=== START : 查询征信主体 ===');
const bytes = await ctx.stub.getState(subjectKey);
if (!bytes || bytes.length === 0) {
const msg = `${subjectKey} 征信主体不存在`;
console.warn(msg);
throw new Error(msg);
}
const subject = JSON.parse(bytes.toString());
console.info('=== END : 查询征信主体 ===');
return subject;
}
}
module.exports = CreditPlusContract;
在链码结构中test目录中添加对于createCreditSubjectPlus以及QueryCreditSubjectPlus功能的单元测试,提交测试代码和验证结果。
javascript
'use strict';
const sinon = require('sinon');
const chai = require('chai');
const sinonChai = require('sinon-chai');
const expect = chai.expect;
chai.use(sinonChai);
let assert = sinon.assert;
const { Context } = require('fabric-contract-api');
const { ChaincodeStub, ClientIdentity } = require('fabric-shim');
const CreditPlusContract = require('../lib/creditContract');
describe('Credit Chaincode Test', () => {
let stub, ctx, ClientId;
beforeEach(() => {
ctx = new Context();
stub = sinon.createStubInstance(ChaincodeStub);
stub.getMspID.returns('Org1');
ctx.setChaincodeStub(stub);
ClientId = sinon.createStubInstance(ClientIdentity);
stub.putState.callsFake((key, value) => {
if (!stub.states) {
stub.states = {};
}
stub.states[key] = value;
});
stub.getState.callsFake(async (key) => {
let ret;
if (stub.states) {
ret = stub.states[key];
}
return Promise.resolve(ret);
});
stub.deleteState.callsFake(async (key) => {
if (stub.states) {
delete stub.states[key];
}
});
});
describe('Test CreditSubject function', () => {
it('should return success on createCreditSubject', async () => {
let creditContract = new CreditPlusContract();
let creditSubject = await creditContract.createCreditSubjectPlus(ctx, "A001", "My Company", "Company","Admin","2024-05-28 14:35:00");
let scroe = creditSubject.score;
expect(scroe).to.equals(0);
});
it('should return success on queryCreditSubject', async () => {
let creditContract = new CreditPlusContract();
await creditContract.createCreditSubjectPlus(ctx, "A001", "My Company", "Company", "Admin", "2024-05-28 14:35:00");
let creditSubject = await creditContract.queryCreditSubjectPlus(ctx, "A001");
let name = creditSubject.organizationName;
expect(name).to.equals("My Company");
});
});
})
测试代码:
三.部署征信链码
在虚拟机指定Hyperledger Fabric中实现对应链码的部署并验证部署情况。
将链码名修改切credit_chaincode_plus,删除node_modules目录以及对应package-lock.json文件,上传至服务器chaincode目录下:
打包测试:
javascript
export FABRIC_CFG_PATH=${PWD}/config
peer lifecycle chaincode package ./chaincode/credit_chaincode_plus.tar.gz --path ./chaincode/credit_chaincode_plus --lang node --label credit_chaincode_plus_1.0
查看打包结果:
安装链码:运行以下进入fabric-cli容器:
javascript
docker exec -it fabric-cli bash
- 在org1中安装:运行以下链码安装:
javascript
. scripts/set-env.sh 1 0 7051
peer lifecycle chaincode install chaincode/credit_chaincode_plus.tar.gz
- 在org2中安装,运行以下链码安装:
javascript
. scripts/set-env.sh 2 0 9051
peer lifecycle chaincode install chaincode/credit_chaincode_plus.tar.gz
- 查看安装情况
javascript
peer lifecycle chaincode queryinstalled
批准链码
org1批准链码
- 设置链码环境变量
javascript
export CC_PACKAGE_ID=credit_chaincode_plus_1.0:9415a0be8812a91c2e510619a4d2a6a5cd06a8cf8f9cef96ee4eec2f456ab7ec
- 设置Org1环境变量
javascript
. scripts/set-env.sh 1 0 7051
3.批准链码
javascript
peer lifecycle chaincode approveformyorg -o orderer.example.com:7050 --ordererTLSHostnameOverride orderer.example.com --channelID $CHANNEL_NAME --name credit_chaincode_plus --version 1.0 --package-id $CC_PACKAGE_ID --sequence 1 --tls --cafile $ORDERER_CA
- 设置Org2环境变量
javascript
. scripts/set-env.sh 2 0 9051
2.批准链码
javascript
peer lifecycle chaincode approveformyorg -o orderer.example.com:7050 --ordererTLSHostnameOverride orderer.example.com --channelID $CHANNEL_NAME --name credit_chaincode_plus --version 1.0 --package-id $CC_PACKAGE_ID --sequence 1 --tls --cafile $ORDERER_CA
检查提交准备
javascript
peer lifecycle chaincode checkcommitreadiness --channelID $CHANNEL_NAME --name credit_chaincode_plus --version 1.0 --sequence 1 --tls --cafile $ORDERER_CA --output json
提交链码
javascript
peer lifecycle chaincode commit -o orderer.example.com:7050 --ordererTLSHostnameOverride orderer.example.com --channelID $CHANNEL_NAME --name credit_chaincode_plus --version 1.0 --sequence 1 --tls --cafile $ORDERER_CA --peerAddresses peer0.org1.example.com:7051 --tlsRootCertFiles $PEER0_ORG1_CA --peerAddresses peer0.org2.example.com:9051 --tlsRootCertFiles $PEER0_ORG2_CA
查询提交的链码
javascript
peer lifecycle chaincode querycommitted --channelID $CHANNEL_NAME --name credit_chaincode_plus --tls --cafile $ORDERER_CA
查看运行镜像形成容器情况
javascript
docker logs -f b1ddd21303a5
调用createCreditSubject功能
javascript
peer chaincode invoke -o orderer.example.com:7050 --tls --cafile $ORDERER_CA --channelID $CHANNEL_NAME --name credit_chaincode_plus --peerAddresses peer0.org1.example.com:7051 --tlsRootCertFiles $PEER0_ORG1_CA --peerAddresses peer0.org2.example.com:9051 --tlsRootCertFiles $PEER0_ORG2_CA -c '{"function":"createCreditSubjectPlus", "Args":["A001", "My Company", "Company","Admin","2024-05-28 14:35:00"]}'
调用queryCreditSubject功能
javascript
peer chaincode query -C $CHANNEL_NAME --name credit_chaincode_plus -c '{"function":"queryCreditSubjectPlus","Args":["A001"]}'
四.部署删除和更新代码
在链码中添加DeleteCreditSubject,实现按subject变量的key属性删除数据功能
在链码中添加UpdateSubjectScore功能,实现按key更新subject,更新subject变量中的score
javascript
'use strict';
const { Contract } = require("fabric-contract-api");
class CreditPlusContract extends Contract {
async createCreditSubjectPlus(ctx, key, organizationName, type, creator, datetime) {
console.info('=== START:创建征信主体 ===');
const subject = {
key: key,
organizationName: organizationName,
type: type,
score: 0,
creator: creator,
datetime: datetime
};
await ctx.stub.putState(key, Buffer.from(JSON.stringify(subject)));
console.info('=== END:创建征信主体 ===');
return subject;
}
// 查询征信主体
async queryCreditSubjectPlus(ctx, subjectKey) {
console.info('=== START : 查询征信主体 ===');
const bytes = await ctx.stub.getState(subjectKey);
if (!bytes || bytes.length === 0) {
const msg = `${subjectKey} 征信主体不存在`;
console.warn(msg);
throw new Error(msg);
}
const subject = JSON.parse(bytes.toString());
console.info('=== END : 查询征信主体 ===');
return subject;
}
async deleteCreditSubject(ctx, id) {
const exists = await this.creditSubjectExists(ctx, id);
if (!exists) {
throw new Error(`The asset ${id} does not exist`);
}
return ctx.stub.deleteState(id);
}
async creditSubjectExists(ctx, id) {
const assetJSON = await ctx.stub.getState(id);
return assetJSON && assetJSON.length > 0;
}
async updateSubjectScore(ctx,subjectKey,inputScore) {
const exists = await this.creditSubjectExists(ctx,subjectKey);
if (!exists) {
throw new Error(`The credit subject ${subjectKey} does not exist`);
}
const bytes = await ctx.stub.getState(subjectKey);
if (!bytes || bytes.length ===0){
const msg = `${subjectKey} 征信主体不存在`;
console.warn(msg)
throw new Error (msg);
}
var subject = JSON.parse(bytes.toString());
subject.score=inputScore;
return ctx.stub.putState(subjectKey, Buffer.from(JSON.stringify(subject)));
}
}
module.exports = CreditPlusContract;
在链码结构中test目录中添加对于DeleteCreditSubject以及UpdateSubjectScore功能的单元测试
javascript
'use strict';
const sinon = require('sinon');
const chai = require('chai');
const sinonChai = require('sinon-chai');
const expect = chai.expect;
chai.use(sinonChai);
let assert = sinon.assert;
const { Context } = require('fabric-contract-api');
const { ChaincodeStub, ClientIdentity } = require('fabric-shim');
const CreditPlusContract = require('../lib/creditContract');
describe('Credit Chaincode Test', () => {
let stub, ctx, ClientId;
beforeEach(() => {
ctx = new Context();
stub = sinon.createStubInstance(ChaincodeStub);
stub.getMspID.returns('Org1');
ctx.setChaincodeStub(stub);
ClientId = sinon.createStubInstance(ClientIdentity);
stub.putState.callsFake((key, value) => {
if (!stub.states) {
stub.states = {};
}
stub.states[key] = value;
});
stub.getState.callsFake(async (key) => {
let ret;
if (stub.states) {
ret = stub.states[key];
}
return Promise.resolve(ret);
});
stub.deleteState.callsFake(async (key) => {
if (stub.states) {
delete stub.states[key];
}
});
});
describe('Test CreditSubject function', () => {
it('should return success on createCreditSubject', async () => {
let creditContract = new CreditPlusContract();
let creditSubject = await creditContract.createCreditSubjectPlus(ctx, "A001", "My Company", "Company","Admin","2024-05-28 14:35:00");
let scroe = creditSubject.score;
expect(scroe).to.equals(0);
});
it('should return success on queryCreditSubject', async () => {
let creditContract = new CreditPlusContract();
await creditContract.createCreditSubjectPlus(ctx, "A001", "My Company", "Company", "Admin", "2024-05-28 14:35:00");
let creditSubject = await creditContract.queryCreditSubjectPlus(ctx, "A001");
let name = creditSubject.organizationName;
expect(name).to.equals("My Company");
});
it('should return sucess on DeleteCreditSubject', async () => {
let creditContract = new CreditPlusContract();
await creditContract.createCreditSubjectPlus(ctx, "A001", "My Company", "Company", "Admin", "2024-05-28 14:35:00");
await creditContract.deleteCreditSubject(ctx,"A001");
let ret = await stub.getState('A001');
expect(ret).to.equal(undefined);
});
it('should return sucess on updateSubjectScore', async () => {
let creditContract = new CreditPlusContract();
await creditContract.createCreditSubjectPlus(ctx, "A001", "My Company", "Company", "Admin", "2024-05-28 14:35:00");
await creditContract.updateSubjectScore(ctx, "A001",10);
let ret = JSON.parse(await stub.getState('A001'));
expect(ret.score).to.eql(10);
});
});
})
测试代码:
五.更新部署征信链码
在链码中重新部署开发链码,实现链码更新(要求version、sequence有迭代痕迹)
打包测试:
javascript
export FABRIC_CFG_PATH=${PWD}/config
peer lifecycle chaincode package ./chaincode/credit_chaincode_plus.tar.gz --path ./chaincode/credit_chaincode_plus --lang node --label credit_chaincode_plus_1.1
安装链码
运行以下进入fabric-cli容器:
javascript
docker exec -it fabric-cli bash
- 在org1中安装 | 运行以下链码安装:
javascript
. scripts/set-env.sh 1 0 7051
javascript
peer lifecycle chaincode install chaincode/credit_chaincode_plus.tar.gz
- 在org2中安装
运行以下链码安装:
javascript
. scripts/set-env.sh 2 0 9051
javascript
peer lifecycle chaincode install chaincode/credit_chaincode_plus.tar.gz
- 查看安装情况
javascript
peer lifecycle chaincode queryinstalled
三.批准链码
org1批准链码
设置链码环境变量
javascript
export CC_PACKAGE_ID=credit_chaincode_plus_1.1:a7d65de21f706c25029b84cbbf7de2163d06d9b8e9fc33fd20a5a59cc3a18b01
- 设置Org1环境变量
javascript
. scripts/set-env.sh 1 0 7051
3.批准链码
javascript
peer lifecycle chaincode approveformyorg -o orderer.example.com:7050 --ordererTLSHostnameOverride orderer.example.com --channelID $CHANNEL_NAME --name credit_chaincode_plus --version 1.1 --package-id $CC_PACKAGE_ID --sequence 2 --tls --cafile $ORDERER_CA
- 设置Org2环境变量
javascript
. scripts/set-env.sh 2 0 9051
2.批准链码
javascript
peer lifecycle chaincode approveformyorg -o orderer.example.com:7050 --ordererTLSHostnameOverride orderer.example.com --channelID $CHANNEL_NAME --name credit_chaincode_plus --version 1.1 --package-id $CC_PACKAGE_ID --sequence 2 --tls --cafile $ORDERER_CA
检查提交准备
javascript
peer lifecycle chaincode checkcommitreadiness --channelID $CHANNEL_NAME --name credit_chaincode_plus --version 1.1 --sequence 2 --tls --cafile $ORDERER_CA --output json
提交链码
javascript
peer lifecycle chaincode commit -o orderer.example.com:7050 --ordererTLSHostnameOverride orderer.example.com --channelID $CHANNEL_NAME --name credit_chaincode_plus --version 1.1 --sequence 2 --tls --cafile $ORDERER_CA --peerAddresses peer0.org1.example.com:7051 --tlsRootCertFiles $PEER0_ORG1_CA --peerAddresses peer0.org2.example.com:9051 --tlsRootCertFiles $PEER0_ORG2_CA
查询提交的链码
javascript
peer lifecycle chaincode querycommitted --channelID $CHANNEL_NAME --name credit_chaincode_plus --tls --cafile $ORDERER_CA
查看运行镜像形成容器情况
javascript
docker logs -f b1ddd21303a5
调用createCreditSubject功能
javascript
peer chaincode invoke -o orderer.example.com:7050 --tls --cafile $ORDERER_CA --channelID $CHANNEL_NAME --name credit_chaincode_plus --peerAddresses peer0.org1.example.com:7051 --tlsRootCertFiles $PEER0_ORG1_CA --peerAddresses peer0.org2.example.com:9051 --tlsRootCertFiles $PEER0_ORG2_CA -c '{"function":"createCreditSubjectPlus", "Args":["A001", "My Company", "Company","Admin","2024-05-28 14:35:00"]}'
调用queryCreditSubject功能
javascript
peer chaincode query -C $CHANNEL_NAME --name credit_chaincode_plus -c '{"function":"queryCreditSubjectPlus","Args":["A001"]}'
调用deleteCreditSubject功能
javascript
peer chaincode invoke -o orderer.example.com:7050 --tls --cafile $ORDERER_CA --channelID $CHANNEL_NAME --name credit_chaincode_plus --peerAddresses peer0.org1.example.com:7051 --tlsRootCertFiles $PEER0_ORG1_CA --peerAddresses peer0.org2.example.com:9051 --tlsRootCertFiles $PEER0_ORG2_CA -c '{"function":"deleteCreditSubject", "Args":["A001"]}'
调用updateSubjectScore功能(这边如果嫌麻烦的话可以更新功能之后再调用删除功能)
javascript
peer chaincode invoke -o orderer.example.com:7050 --tls --cafile $ORDERER_CA --channelID $CHANNEL_NAME --name credit_chaincode_plus --peerAddresses peer0.org1.example.com:7051 --tlsRootCertFiles $PEER0_ORG1_CA --peerAddresses peer0.org2.example.com:9051 --tlsRootCertFiles $PEER0_ORG2_CA -c '{"function":"updateSubjectScore", "Args":["A002","10"]}'