FlightSurety

FlightSurety is a sample application project for Udacity’s Blockchain course.

Versions

• Truffle v5.1.61
• Solidity – 0.6.12
• Node v15.5.1
• Web3.js v1.2.9
• Ganache v1.2.3

Install

This repository contains Smart Contract code in Solidity (using Truffle), tests (also using Truffle), dApp scaffolding (using React, Chakra-U ) and server app scaffolding.

To install, download or clone the repo, then:

1. npm install
2. npm --prefix ./src/dapp install ./src/dapp

truffle compile

Develop Client

To run truffle tests:

1. ./start-ganache.sh
2. In another Terminal :
   • truffle test ./test/flightSurety.js
   • truffle test ./test/oracles.js
   • truffle test ./test/oracleLate.js
   • truffle test ./test/oraclesOnTime.js

To use the server and dapp :

1. ./start-ganache.sh
2. truffle migrate --reset ( another Terminal)
3. npm run server
4. ./start-dapp.sh

The server is used for 3 purposes :

• Register oracles
• Reigstering a list of Airlines in the FlightSurety contract (in the startup)
• Serve an API, to retrieve flights list and to manage the flight status returned by the oracles ( for simulation purpose)

To view dapp:

http://localhost:8000

Dapp Snappshots

Info Tab

• All the registered Airlines, retrieved by calling the FlightSuretyApp (smart contract )

• The flights list is retrieved from the backend server

• The passenger accounts ( from the truffle config)

Management Tab

• It is used to disable or enable the FlightSuretyApp smart contract

• And to set the flight status that will be retrieved by the registered oracles

• After disabling the contract, the airlines list could not be fetched anymore

Insurance Tab

• From this tab the user can buy the insurance , open request to check the flight status and pay out the insurance

• Case :The flight is late

• Case : The flight is on time

• Withdraw the insurance : pay out the passenger

Resources

• How does Ethereum work anyway?
• BIP39 Mnemonic Generator
• Truffle Framework
• Ganache Local Blockchain
• Remix Solidity IDE
• Solidity Language Reference
• Ethereum Blockchain Explorer
• Web3Js Reference

安装

FlightSurety是Udacity区块链blockchain课程的一个示例应用项目。

开发客户端

• Truffle v5.1.61
• Solidity-0.6.12
• 节点v15.5.1
• Ganache v1.2.3
• npm安装

Dapp快照

此存储库包含可靠的智能合约代码（使用Truffle）、测试（也使用Truffle）、dApp支架（使用React、Chakra-U）和服务器应用程序支架。

安装、下载或克隆repo，然后：

1. npm–前缀./src/dapp安装。/src/dapp
2. /start-加纳什.sh

truffle compile

信息选项卡

运行truffle测试：

1. 在另一个终端：块菌测试。/test/飞行保证.js松露试验/神谕.js松露试验/oracleLate.js松露试验/oraclesOnTime.js松露试验/飞行保证.js松露试验/神谕.js松露测试/测试/oracleLate.js松露试验/oraclesOnTime.js
2. /开始-加纳什.sh

使用服务器和dapp:

1. 在飞行担保合同中重新提供航空公司名单（在初创期）
2. 提供一个API，用于检索航班列表和管理oracles返回的航班状态（用于模拟目的）
3. 通过调用FlightSuretyApp（智能合约）检索的所有注册航空公司
4. 航班列表从后端服务器

服务器用于3个目的：

• 乘客帐户（从truffle）检索config）
• 它用于禁用或启用FlightSuretyApp智能合约，并设置在禁用合约后由注册的oracle检索的航班状态，无法再获取航空公司列表
• 用户可以从该选项卡购买保险，打开请求检查航班状态并支付保险金案例：航班晚点案例：航班准时退保以太坊eth如何工作？BIP39助记符生成器

查看dapp:

http://localhost：8000所有注册航空公司，通过调用FlightSuretyApp（智能合约）检索航班列表从后端服务器检索乘客帐户（从truffle配置）并设置注册oracle检索的航班状态禁用合同后，将无法再获取航空公司列表，例如：航班准点，取消保险，为乘客支付保险

安装

开发客户端

Dapp快照

信息选项卡

管理选项卡

保险选项卡

资源

它用于禁用或启用FlightSuretyApp智能合约，并设置在禁用合约后由注册的oracle检索的航班状态，无法再获取航空公司列表

管理选项卡

保险选项卡

• All the registered Airlines, retrieved by calling the FlightSuretyApp (smart contract )

• The flights list is retrieved from the backend server

• The passenger accounts ( from the truffle config)

资源

• It is used to disable or enable the FlightSuretyApp smart contract

• And to set the flight status that will be retrieved by the registered oracles

• After disabling the contract, the airlines list could not be fetched anymore

Insurance Tab

• From this tab the user can buy the insurance , open request to check the flight status and pay out the insurance

• Case :The flight is late

• Case : The flight is on time

• Withdraw the insurance : pay out the passenger

Resources

• How does Ethereum work anyway?
• BIP39 Mnemonic Generator
• Truffle Framework
• Ganache Local Blockchain
• Remix Solidity IDE
• Solidity Language Reference
• Ethereum Blockchain Explorer
• Web3Js Reference