Hyperledger Fabric 1.2系列fabcar：

简介

fabcar事例可以让我们了解到，如何使用fabric-ca来生成证书、通过node-sdk调用fabric网络、启用couchdb作为状态数据库等相关内容

启动网络

启动网络之前，一定要把之前的网络内容清理干净。

安装客户端并启动网络

1. 进入fabric-samples/fabcar目录, 执行ls我们会看到如下内容。

enrollAdmin.js  invoke.js   package.json   query.js  registerUser.js  startFabric.sh

执行npm install

npm install

该命令会安装fabric-ca-client、fabric-client以及grpc

如果npm install安装的特别慢，可以执行npm config set registry https://registry.npm.taobao.org。之后再重新执行

2. 启动fabric网络
   我们通过startFabric.sh脚本来启动网络，并调用go语言的fabcar智能合约

./startFabric.sh

注册管理员用户

我们把ca的日志打印一下。

docker logs -f ca.example.com

然后打开另一个终端执行:

node enrollAdmin.js

注册user1

node registerUser.js

我们为两个用户提供了不同的身份证书。并保存在了fabcar/hfc-key-store目录下。

查询内容

node query.js

会返回如下内容：

root@JDu4e00u53f7:~/gowork/src/fabric-samples/fabcar# node query.js
Store path:/root/gowork/src/fabric-samples/fabcar/hfc-key-store
Successfully loaded user1 from persistence
Query has completed, checking results
Response is  [{"Key":"CAR0", "Record":{"colour":"blue","make":"Toyota","model":"Prius","owner":"Tomoko"}},{"Key":"CAR1", "Record":{"colour":"red","make":"Ford","model":"Mustang","owner":"Brad"}},{"Key":"CAR2", "Record":{"colour":"green","make":"Hyundai","model":"Tucson","owner":"Jin Soo"}},{"Key":"CAR3", "Record":{"colour":"yellow","make":"Volkswagen","model":"Passat","owner":"Max"}},{"Key":"CAR4", "Record":{"colour":"black","make":"Tesla","model":"S","owner":"Adriana"}},{"Key":"CAR5", "Record":{"colour":"purple","make":"Peugeot","model":"205","owner":"Michel"}},{"Key":"CAR6", "Record":{"colour":"white","make":"Chery","model":"S22L","owner":"Aarav"}},{"Key":"CAR7", "Record":{"colour":"violet","make":"Fiat","model":"Punto","owner":"Pari"}},{"Key":"CAR8", "Record":{"colour":"indigo","make":"Tata","model":"Nano","owner":"Valeria"}},{"Key":"CAR9", "Record":{"colour":"brown","make":"Holden","model":"Barina","owner":"Shotaro"}}]

调用

node invoke.js      //没有指定函数名称，暂时不能调用