从零到壹构建基于fabric-sdk-node的项目开发实战之五

运行示例程序

一切就绪，现在可以开始测试我们的应用程序了。

终端窗口 1

• 进入项目根目录：

  $ cd $HOME/kevin-fabric-sdk-node
  

• 使用 docker-compose 命令启动网络

  $ docker-compose -f artifacts/docker-compose.yaml up
  

终端窗口 2

• 进入项目根目录，安装 gulp：

  $ cd $HOME/kevin-fabric-sdk-node
  $ npm install -g gulp
  

• 安装 fabric-client 与 fabric-ca-client 模块

  $ npm install
  

  执行成功如下信息：

  

• 启动 node app 指定 PORT 为 4000

  $ PORT=4000 node app
  

  启动成功如下图所示：

  

终端窗口 3

• 执行 REST APIs 参见 REST APIs 调用请求

REST APIs 调用请求

登录请求

在终端窗口3中执行：

$ cd $HOME/kevin-fabric-sdk-node

• 在 Org1 组织中注册并登记一个新的用户:

$ curl -s -X POST \
	http://localhost:4000/users \
	-H "content-type: application/x-www-form-urlencoded" \
	-d 'username=Jim&orgName=Org1'

如果出现502错误，那么使用 unset http_proxy 取消/关闭代理即可。

终端输出如下响应信息:

{
    
  "success": true,
  "secret": "RaxhMgevgJcm",
  "message": "Jim enrolled Successfully",
  "token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE1NDExNTc2OTUsInVzZXJuYW1lIjoiSmltIiwib3JnTmFtZSI6Ik9yZzEiLCJpYXQiOjE1NDExMjE2OTV9.TqN-T3xQOCkPf_HYAxd21RbmZ7FAOjcPyXadzVrfWYs"
}

注意：响应信息包含成功/失败的状态，注册密钥和JSON Web令牌（JWT），它是后续请求的请求标头中的所必需字符串

创建通道请求

$ curl -s -X POST \
  http://localhost:4000/channels \
  -H "authorization: Bearer <put JSON Web Token here>" \
  -H "content-type: application/json" \
  -d '{
	"channelName":"kevinkongyixueyuan",
	"channelConfigPath":"../artifacts/channel/mychannel.tx"
}'

请注意，Header 授权必须包含POST /users通话中返回的 JWT

执行成功终端输出如下响应信息：

{
    
	"success":true,
	"message":"Channel 'kevinkongyixueyuan' created Successfully"
}

加入通道请求

$ curl -s -X POST \
  http://localhost:4000/channels/kevinkongyixueyuan/peers \
  -H "authorization: Bearer <put JSON Web Token here>" \
  -H "content-type: application/json" \
  -d '{
	"peers": ["peer0.org1.kevin.kongyixueyuan.com","peer1.org1.kevin.kongyixueyuan.com"]
}'

执行成功终端输出如下响应信息：

{
    
	"success":true,
	"message":"Successfully joined peers in organization Org1 to the channel:kevinkongyixueyuan"
}

安装链码

$ curl -s -X POST \
  http://localhost:4000/chaincodes \
  -H "authorization: Bearer <put JSON Web Token here>" \
  -H "content-type: application/json" \
  -d '{
	"peers": ["peer0.org1.kevin.kongyixueyuan.com","peer1.org1.kevin.kongyixueyuan.com"],
	"chaincodeName":"mycc",
	"chaincodePath":"github.com/example_cc",
	"chaincodeType": "golang",
	"chaincodeVersion":"v0"
}'

注意： 当使用node.js链代码时，必须将chaincodeType设置为node，并且必须将chaincodePath设置为node.js chaincode的位置。也加入了$PWD

如下:
$ curl -s -X POST \
http://localhost:4000/chaincodes \
-H "authorization: Bearer <put JSON Web Token here>" \
-H "content-type: application/json" \
-d '{
"peers": ["peer0.org1.kevin.kongyixueyuan.com","peer1.org1.kevin.kongyixueyuan.com"],
"chaincodeName":"mycc",
"chaincodePath":"$PWD/artifacts/src/github.com/example_cc/node",
"chaincodeType": "node",
"chaincodeVersion":"v0"
}'

执行成功终端输出如下响应信息：

{
    
	"success":true,
	"message":"Successfully install chaincode"
}

实例化链码

$ curl -s -X POST \
  http://localhost:4000/channels/kevinkongyixueyuan/chaincodes \
  -H "authorization: Bearer <put JSON Web Token here>" \
  -H "content-type: application/json" \
  -d '{
    "peers": ["peer0.org1.kevin.kongyixueyuan.com","peer1.org1.kevin.kongyixueyuan.com"],
	"chaincodeName":"mycc",
	"chaincodeVersion":"v0",
	"chaincodeType": "golang",
	"args":["a","100","b","200"]
}'

执行成功终端输出如下：

{
    
	"success":true,
	"message":"Successfully instantiate chaingcode in organization Org1 to the channel 'kevinkongyixueyuan'"
}

调用链码请求

$ curl -s -X POST \
  http://localhost:4000/channels/kevinkongyixueyuan/chaincodes/mycc \
  -H "authorization: Bearer <put JSON Web Token here>" \
  -H "content-type: application/json" \
  -d '{
	"peers": ["peer0.org1.kevin.kongyixueyuan.com","peer1.org1.kevin.kongyixueyuan.com"],
	"fcn":"move",
	"args":["a","b","10"]
}'

注意： 当使用node.js链代码时，必须将chaincodeType设置为node

执行成功终端中输出响应的事务ID

fad37683c5e716a9102cd15a1bd6555440374cd39d9464e3ee805802c7be3d58

**注意：**请保存响应信息的事务ID，在后续查询事务中会使用到此字符串。

查询链码

$ curl -s -X GET \
  "http://localhost:4000/channels/kevinkongyixueyuan/chaincodes/mycc?peer=peer0.org1.kevin.kongyixueyuan.com&fcn=query&args=%5B%22a%22%5D" \
  -H "authorization: Bearer <put JSON Web Token here>" \
  -H "content-type: application/json"  

执行成功终端中输出如下响应信息：

a now has 90 after the move

根据块号查询块

$ curl -s -X GET \
  "http://localhost:4000/channels/kevinkongyixueyuan/blocks/1?peer=peer0.org1.kevin.kongyixueyuan.com" \
  -H "authorization: Bearer <put JSON Web Token here>" \
  -H "content-type: application/json"  

根据 TransactionID 查询事务

$ curl -s -X GET http://localhost:4000/channels/kevinkongyixueyuan/transactions/$TRX_ID?peer=peer0.org1.kevin.kongyixueyuan.com \
  -H "authorization: Bearer <put JSON Web Token here>" \
  -H "content-type: application/json"

注意：事务ID来自于之前的事务调用

查询 ChainInfo

$ curl -s -X GET \
  "http://localhost:4000/channels/kevinkongyixueyuan?peer=peer0.org1.kevin.kongyixueyuan.com" \
  -H "authorization: Bearer <put JSON Web Token here>" \
  -H "content-type: application/json"  

执行成功终端中输出如下响应信息：

{
    "height":{
    "low":3,"high":0,"unsigned":true},"currentBlockHash":{
    "buffer":{
    "type":"Buffer","data":[8,3,18,32,90,58,37,82,74,234,234,178,22,93,187,246,79,177,37,66,84,226,156,100,61,35,120,220,166,146,193,20,143,34,221,57,26,32,137,149,94,253,17,79,72,43,212,158,153,70,25,218,146,32,22,125,198,104,249,102,21,157,183,90,12,28,111,246,17,66]},"offset":4,"markedOffset":-1,"limit":36,"littleEndian":true,"noAssert":false},"previousBlockHash":{
    "buffer":{
    "type":"Buffer","data":[8,3,18,32,90,58,37,82,74,234,234,178,22,93,187,246,79,177,37,66,84,226,156,100,61,35,120,220,166,146,193,20,143,34,221,57,26,32,137,149,94,253,17,79,72,43,212,158,153,70,25,218,146,32,22,125,198,104,249,102,21,157,183,90,12,28,111,246,17,66]},"offset":38,"markedOffset":-1,"limit":70,"littleEndian":true,"noAssert":false}}

查询已安装的链代码

$ curl -s -X GET \
  "http://localhost:4000/chaincodes?peer=peer0.org1.kevin.kongyixueyuan.com" \
  -H "authorization: Bearer <put JSON Web Token here>" \
  -H "content-type: application/json"  

执行成功终端中输出如下响应信息：

["name: mycc, version: v0, path: github.com/example_cc"]

查询实例化链代码

$ curl -s -X GET \
  "http://localhost:4000/channels/kevinkongyixueyuan/chaincodes?peer=peer0.org1.kevin.kongyixueyuan.com" \
  -H "authorization: Bearer <put JSON Web Token here>" \
  -H "content-type: application/json"  

执行成功终端中输出如下响应信息：

["name: mycc, version: v0, path: github.com/example_cc"]

查询通道

$ curl -s -X GET \
  "http://localhost:4000/channels?peer=peer0.org1.kevin.kongyixueyuan.com" \
  -H "authorization: Bearer <put JSON Web Token here>" \
  -H "content-type: application/json"  

执行成功终端中输出如下响应信息：

{
    "channels":[{
    "channel_id":"kevinkongyixueyuan"}]}

发现IP地址

要检索某个网络实体的IP地址，请使用如下命令：

# this will return the IP Address for peer0
$ docker inspect peer0 | grep IPAddress

关闭并清理网络

创建清理网络的脚本文件：

$ cd $HOME/kevin-fabric-sdk-node
$ vim shutdownnetwork.sh

文件中添加如下内容：

echo "shutdown fabric-network"
echo
docker-compose -f artifacts/docker-compose.yaml down
echo

echo "docker rm -f $(docker ps -aq)"
echo
docker rm -f $(docker ps -aq)
echo

echo "docker rmi -f $(docker images | grep dev | awk '{print $3}')"
echo
docker rmi -f $(docker images | grep dev | awk '{print $3}')
echo

echo "Delete current dir org-kv"
echo
rm -rf fabric-client-kv-org[1-2]
echo

echo "Delete tmp dir org-kv"
echo
rm -rf /tmp/fabric-client-kv-org[1-2]
echo

echo "shutdown and clear OK"

添加可执行权限并执行：

$ chmod 777 ./shutdownnetwork.sh
$ ./shutdownnetwork.sh

应用完整源代码下载地址，请点击此处