區塊鏈100講：Hyperledger Fabric實踐-基於ubuntu系統部署網絡

Hyperledger Composer 網絡要素

Business Network Definition

在咱們動手執行代碼以前，先來了解一下Business Network Definition的概念。由於這個概念貫穿在這個網絡系統中。BND爲區塊鏈定義了 數據模型， 交易邏輯 和 訪問控制規則 。咱們能夠部署bna包到Fabric網絡，爲了生成bna，咱們須要提早生成：

• a set of model files

• a set of JavaScript files

• an Access Control file

全部的這些文件，均可以理解是對咱們的網絡的描述文件。網絡根據咱們的描述，來執行。

BusinessNetworkFiles

那咱們就動手搭建，而且部署一個網絡。 下面的代碼執行於ubuntu系統。

1

Setp 1 建立一個business network應用

（1）從命令行，建立一個新的dir，而且cd到該dir

amy@amy-wu:~/pg/sandbox/bnd$ yo hyperledger-composer:businessnetwork

Welcome to the business network generator

? Business network name: tutorial-network

? Description: Here is a hello world example

? Author name:  Amy Wu

? Author email: AmyWu@123abc.com

? License: Apache-2.0

? Namespace: org.example.biznet

? Do you want to generate an empty template network

? No: generate a populated sample network

   create package.json

   create README.md

   create models/org.example.biznet.cto

   create permissions.acl

   create .eslintrc.yml

   create features/sample.feature

   create features/support/index.js

   create test/logic.js

   create lib/logic.js

amy@amy-wu:~/pg/sandbox/bnd$

（2）查看剛剛的指令爲了建立的文件

amy@amy-wu:~/pg/sandbox/bnd$ tree

.

└── tutorial-network

    ├── features

    │   ├── sample.feature

    │   └── support

    │       └── index.js

    ├── lib

    │   └── logic.js

    ├── models

    │   └── org.example.biznet.cto

    ├── package.json

    ├── permissions.acl

    ├── README.md

    └── test

        └── logic.js

6 directories, 8 files

amy@amy-wu:~/pg/sandbox/bnd$

2

Setp 2** 查看 org.example.biznet.cto 和 permission.acl**

org.example.biznet.cto 定義了網絡裏面的參與方，資產等信息

permission.acl 定義了訪問權限

3

Setp 3 打包生成bna包

（1）cd到 /tutorial-network 目錄下

須要提早安裝composer環境

升級Fabric Composer版本

• 錯誤提示

Cannot use v0.16.6 version of composer with fabric 1.1, v0.19 or higher is required

• 確認版本

composer -vv0.19.10

• 卸載現有版本

npm uninstall -g composer-cli
npm uninstall -g composer-rest-server
npm uninstall -g generator-hyperledger-composer

• 從新安裝最新版本版本

npm install -g composer-cli
npm install -g composer-rest-server
npm install -g generator-hyperledger-composer

amy@amy-wu:~/pg/sandbox/bnd/tutorial-network$ composer archive create -t dir -n .

Creating Business Network Archive

Looking for package.json of Business Network Definition

    Input directory: /home/amy/pg/sandbox/bnd/tutorial-network

Found:

    Description: Here is a hello world example

    Name: tutorial-network

    Identifier: tutorial-network@0.0.1

Written Business Network Definition Archive file to

     Output file: tutorial-network@0.0.1.bna

Command succeeded

（2）查看生成的bna文件

amy@amy-wu:~/pg/sandbox/bnd$ tree.

└── tutorial-network

    ├── features

    │   ├── sample.feature

    │   └── support

    │       └── index.js

    ├── lib

    │   └── logic.js

    ├── models

    │   └── org.example.biznet.cto

    ├── package.json

    ├── permissions.acl

    ├── README.md

    ├── test

    │   └── logic.js

    └── tutorial-network@0.0.1.bna 新生成的文件

6 directories, 9 files

4

Setp 4 部署business network

在作部署以前，先要啓動一個Fabric網絡。

（1）下載fabric-dev-servers.zip

mkdir fabric-dev-servers && cd fabric-dev-servers

curl -O https://raw.githubusercontent.com/hyperledger/composer-tools/master/packages/fabric-dev-servers/fabric-dev-servers.zip

unzip fabric-dev-servers.zip

（2）第一次啓動Fabric網絡的時候

cd fabric-dev-servers

./downloadFabric.sh
./startFabric.sh
./createPeerAdminCard.sh

（3）結束的時候

./stopFabric.sh 
./teardownFabric.sh 

（4）初始化網路

amy@amy-wu:~/pg/sandbox/bnd/tutorial-network$ composer network install --card PeerAdmin@hlfv1 --archiveFile tutorial-network@0.0.1.bna

✔ Installing business network. This may take a minute...Successfully installed business network tutorial-network, version 0.0.1

Command succeeded

amy@amy-wu:~/pg/sandbox/bnd/tutorial-network$

（5）查看docker containers

docker container ls

CONTAINER ID        IMAGE                                     COMMAND                  CREATED             STATUS              PORTS                                            NAMES

27b30f42cc5e        hyperledger/fabric-peer:x86_64-1.1.0

      "peer node start"        5 minutes ago       Up 5 minutes

        0.0.0.0:7051->7051/tcp, 0.0.0.0:7053->7053/tcp   peer0.org1.example.com

2f62650005f4        hyperledger/fabric-orderer:x86_64-1.1.0 

  "orderer"                5 minutes ago       Up 5 minutes

        0.0.0.0:7050->7050/tcp                           orderer.example.com96ec8b462e0e

        hyperledger/fabric-couchdb:x86_64-0.4.6   "tini -- /docker-ent…"   5 minutes ago       Up 5 minutes        4369/tcp, 9100/tcp, 0.0.0.0:5984->5984/tcp       couchdb

ecd55c74cb76        hyperledger/fabric-ca:x86_64-1.1.0 

       "sh -c 'fabric-ca-se…"   5 minutes ago       Up 5 minutes 

       0.0.0.0:7054->7054/tcp  

                         ca.org1.example.com

（6）啓動網絡

amy@amy-wu:~/pg/sandbox/bnd/tutorial-network$ composer network start --networkName tutorial-network --networkVersion 0.0.1 --networkAdmin admin --networkAdminEnrollSecret adminpw --card PeerAdmin@hlfv1 --file networkadmin.card

Starting business network tutorial-network at version 0.0.1

Processing these Network Admins:

     userName: admin

✔ Starting business network definition. This may take a minute...

Successfully created business network card:

    Filename: networkadmin.card

Command succeeded

（7）導入網絡管理員身份

amy@amy-wu:~/pg/sandbox/bnd/tutorial-network$ composer card import --file networkadmin.card

Successfully imported business network card

    Card file: networkadmin.card

    Card name: admin@tutorial-network

Command succeeded

（8）測試

amy@amy-wu:~/pg/sandbox/bnd/tutorial-network$ composer network ping --card admin@tutorial-network

The connection to the network was successfully tested: tutorial-network

    Business network version: 0.0.1

    Composer runtime version: 0.19.10

    participant: org.hyperledger.composer.system.NetworkAdmin#admin 

   identity: org.hyperledger.composer.system.Identity#d9e43201ca1bcc328e0e81ceaf96caf4f113019f41d26d292699151a50d0a3ac

Command succeeded

5

Setp 5 生成REST server

amy@amy-wu:~$ composer-rest-server

? Enter the name of the business network card to use: admin@tutorial-network

? Specify if you want namespaces in the generated REST API: never use namespaces

? Specify if you want to use an API key to secure the REST API: No

? Specify if you want to enable authentication for the REST API using Passport: Yes

? Specify if you want to enable multiple user and identity management using wallets: No

? Specify if you want to enable event publication over WebSockets: Yes

? Specify if you want to enable TLS security for the REST API: No

To restart the REST server using the same options, issue the following command:

   composer-rest-server -c admin@tutorial-network -n never -a true -w true

Discovering types from business network definition ...

Discovered types from business network definition

Generating schemas for all types in business network definition ...

Generated schemas for all types in business network definition

Adding schemas for all types to Loopback ...

Added schemas for all types to Loopback

Web server listening at: http://localhost:3000

Browse your REST API at http://localhost:3000/explorer

查看API：http://localhost:3000/explorer

6

Setp 6 生成應用

amy@amy-wu:~/pg/sandbox/bnd/tutorial-network$ yo hyperledger-composer:angular

Welcome to the Hyperledger Composer Angular project generator

? Do you want to connect to a running Business Network? Yes

? Project name: angular-app

? Description: Hyperledger Composer Angular project

? Author name: Amy WU

? Author email: 123@gmail.com

? License: Apache-2.0? Name of the Business Network card: admin@tutorial-network

? Do you want to generate a new REST API or connect to an existing REST API

?  Connect to an existing REST API

? REST server address: http://localhost

? REST server port: 3000? Should namespaces be used in the generated REST API? Namespaces are not used

Created application!

Completed generation process

   create app.js

Binary found at /home/amy/pg/sandbox/bnd/tutorial-network/angular-app/node_modules/node-sass/vendor/linux-x64-59/binding.node

Testing binary

Binary is fine

npm notice created a lockfile as package-lock.json. You should commit this file.

npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.4 (node_modules/fsevents):

npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.4: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})

added 1162 packages in 145.973s

Application generated

（1）啓動應用

amy@amy-wu:~/pg/sandbox/bnd/tutorial-network/angular-app$ npm start

> angular-app@0.0.1 start /home/amy/pg/sandbox/bnd/tutorial-network/angular-app

> ng serve --proxy-config proxy.conf.js --host 0.0.0.0

** NG Live Development Server is running on http://0.0.0.0:4200 **

 10% building modules 4/4 modules 0 active[HPM] Proxy created: [ '/auth', '/api' ]  ->  http://localhost:3000

[HPM] Proxy created: /  ->  http://localhost:3000

Hash: a0d3dc89fcbecd8aa802 

Time: 12249ms

chunk    {0} polyfills.bundle.js, polyfills.bundle.js.map (polyfills) 270 kB {5} [initial] [rendered]

chunk    {1} main.bundle.js, main.bundle.js.map (main) 101 kB {4} [initial] [rendered]

chunk    {2} styles.bundle.js, styles.bundle.js.map (styles) 184 kB {5} [initial] [rendered]

chunk    {3} scripts.bundle.js, scripts.bundle.js.map (scripts) 439 kB {5} [initial] [rendered]

chunk    {4} vendor.bundle.js, vendor.bundle.js.map (vendor) 4.12 MB [initial] [rendered]

chunk    {5} inline.bundle.js, inline.bundle.js.map (inline) 0 bytes [entry] [rendered]

webpack: Compiled successfully.

（2）查看應用

http://0.0.0.0:4200

本文做者：HiBlock區塊鏈技術佈道羣-AmyWu

原文發佈於簡書

原文連接：https://www.jianshu.com/p/bec173e6cf73

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