Fabric 2.0 install guide（安装指引）

sudo yum install -y git

go

wget -c https://studygolang.com/dl/golang/go1.14.linux-amd64.tar.gz tar -C /usr/local/ -zxvf go1.14.linux-amd64.tar.gz vi /etc/profile # 新增 export PATH=$PATH:/usr/local/go/bin export GOROOT=/usr/local/go export GOPATH=/root/go/  source /etc/profile #验证  go version

下载文件及 docker 镜像

一键脚本

curl -sSL https://bit.ly/2ysbOFE | bash -s -- 2.0.0 1.4.4 0.4.18

• 2.0.0：表示Hyperledger Fabric的版本号
• 1.4.4：表示Fabric CA的版本号
• 0.4.18：表示第三方引用的版本号

加速技巧

首先自己整个科学上网, 设置好 http 代理端口(如 1087)

然后在docker 偏好设置中设置代理, 如下图

设置完成后点击 Apply & Restart 重启生效.

若没有科学上网, 则可以手动执行 docker pull 命令, 单个执行不容易卡住

docker pull hyperledger/fabric-peer:2.0.0 docker pull hyperledger/fabric-orderer:2.0.0 docker pull hyperledger/fabric-ccenv:2.0.0 docker pull hyperledger/fabric-tools:2.0.0 docker pull hyperledger/fabric-nodeenv:2.0.0 docker pull hyperledger/fabric-baseos:2.0.0 docker pull hyperledger/fabric-javaenv:2.0.0 docker pull hyperledger/fabric-ca:1.4.4 docker pull hyperledger/fabric-zookeeper:0.4.18 docker pull hyperledger/fabric-kafka:0.4.18 docker pull hyperledger/fabric-couchdb:0.4.18

最后检查

cd fabric-samples/bin ls -l export PATH=$PATH:$(pwd) orderer version

1.存在 bin 目录

2.bin 下存在 orderer 等可执行文件

3.将 bin 添加到 PATH 下

4.检查 orderer 版本是否正确

测试网络

cd fabric-samples/test-network #注意会删除全部容器 docker stop $(docker ps -q)  docker rm $(docker ps -aq) ./network.sh up

1.进入测试网络目录

2.停止并删除之前的容器防止命名冲突

3.运行测试网络(通过 docker-compose)

链码入门示例(智能合约)

启动环境及安装 npm

cd fabric-samples/fabcar #将启动 first-network 环境, 然后将早已存在镜像中的链码代码打包, 安装, 验证, 提交, 使其可执行 ./startFabric.sh javascript cd javascript # 自行安装cnpm cnpm i

测试链码

官方提示

JavaScript:    Start by changing into the "javascript" directory:     cd javascript    Next, install all required packages:     npm install    Then run the following applications to enroll the admin user, and register a new user   called user1 which will be used by the other applications to interact with the deployed   FabCar contract:     node enrollAdmin     node registerUser    You can run the invoke application as follows. By default, the invoke application will   create a new car, but you can update the application to submit other transactions:     node invoke    You can run the query application as follows. By default, the query application will   return all cars, but you can update the application to evaluate other transactions:     node query

通过SDK(js) 调用合约

#添加 admin 用户和普通用户 user1 node enrollAdmin.js node registerUser.js # 执行合约的 queryAll 方法 node query.js # 执行合约的 createCar 方法 node invoke.js # 重新查询 node query.js

实际合约(js 代码)

fabric-samples/chaincode/fabcar/javascript/lib/fabcar.js

/*  * SPDX-License-Identifier: Apache-2.0  */  'use strict';  const { Contract } = require('fabric-contract-api');  class FabCar extends Contract {      async initLedger(ctx) {         console.info('============= START : Initialize Ledger ===========');         const cars = [             {                 color: 'blue',                 make: 'Toyota',                 model: 'Prius',                 owner: 'Tomoko',             },             {                 color: 'red',                 make: 'Ford',                 model: 'Mustang',                 owner: 'Brad',             },             {                 color: 'green',                 make: 'Hyundai',                 model: 'Tucson',                 owner: 'Jin Soo',             },             {                 color: 'yellow',                 make: 'Volkswagen',                 model: 'Passat',                 owner: 'Max',             },             {                 color: 'black',                 make: 'Tesla',                 model: 'S',                 owner: 'Adriana',             },             {                 color: 'purple',                 make: 'Peugeot',                 model: '205',                 owner: 'Michel',             },             {                 color: 'white',                 make: 'Chery',                 model: 'S22L',                 owner: 'Aarav',             },             {                 color: 'violet',                 make: 'Fiat',                 model: 'Punto',                 owner: 'Pari',             },             {                 color: 'indigo',                 make: 'Tata',                 model: 'Nano',                 owner: 'Valeria',             },             {                 color: 'brown',                 make: 'Holden',                 model: 'Barina',                 owner: 'Shotaro',             },         ];          for (let i = 0; i < cars.length; i++) {             cars[i].docType = 'car';             await ctx.stub.putState('CAR' + i, Buffer.from(JSON.stringify(cars[i])));             console.info('Added <--> ', cars[i]);         }         console.info('============= END : Initialize Ledger ===========');     }      async queryCar(ctx, carNumber) {         const carAsBytes = await ctx.stub.getState(carNumber); // get the car from chaincode state         if (!carAsBytes || carAsBytes.length === 0) {             throw new Error(`${carNumber} does not exist`);         }         console.log(carAsBytes.toString());         return carAsBytes.toString();     }      async createCar(ctx, carNumber, make, model, color, owner) {         console.info('============= START : Create Car ===========');          const car = {             color,             docType: 'car',             make,             model,             owner,         };          await ctx.stub.putState(carNumber, Buffer.from(JSON.stringify(car)));         console.info('============= END : Create Car ===========');     }      async queryAllCars(ctx) {         const startKey = 'CAR0';         const endKey = 'CAR999';         const allResults = [];         for await (const {key, value} of ctx.stub.getStateByRange(startKey, endKey)) {             const strValue = Buffer.from(value).toString('utf8');             let record;             try {                 record = JSON.parse(strValue);             } catch (err) {                 console.log(err);                 record = strValue;             }             allResults.push({ Key: key, Record: record });         }         console.info(allResults);         return JSON.stringify(allResults);     }      async changeCarOwner(ctx, carNumber, newOwner) {         console.info('============= START : changeCarOwner ===========');          const carAsBytes = await ctx.stub.getState(carNumber); // get the car from chaincode state         if (!carAsBytes || carAsBytes.length === 0) {             throw new Error(`${carNumber} does not exist`);         }         const car = JSON.parse(carAsBytes.toString());         car.owner = newOwner;          await ctx.stub.putState(carNumber, Buffer.from(JSON.stringify(car)));         console.info('============= END : changeCarOwner ===========');     }  }  module.exports = FabCar;