This application was developed during my master's thesis. It is a design science artifact to solve problems in the domain of SLAs of digital services.

Information (sequence diagrams, architecture, class diagrams) can be found in the diagrams folder for more information on this application.

• make (gcc) (sudo apt-get install build-essential)
• MetaMask browser extension
• Windows: MS Visual C++ build tools
• python 2.7

• ubuntu only: sudo apt-get install build-essential
• windows only (as admin): npm install --global --production windows-build-tools
• npm install
• sudo npm install -g truffle
• MetaMask mnemonic: candy maple cake sugar pudding cream honey rich smooth crumble sweet treat

In project root execute:

1. truffle develop (Windows: truffle.cmd develop)
2. npm run migrate
3. node ./src/utils/SetMockData.js (optional, adds fake data, e.g., service offerings and contracts)
4. npm run start (starts dev webserver which server's react app)
5. Open http://localhost:3000 in browser
6. Use MetaMask in Browser to interact with truffle Blockchain

As a customer, you're able to buy services in the "Store" view of the web app. The public key input is only for decoration with no functionality.

The billing view shows active service contracts, their achieved service performance and payment information.

Provider Contract: 0x345ca3e014aaf5dca488057592ee47305d9b3e10
Provider Account: (0) 0x627306090abab3a6e1400e9345bc60c78a8bef57
Customer Account: (1) 0xf17f52151ebef6c7334fad080c5704d77216b732

├- contracts # Smart Contract files (.sol)
├- migrations # necessary for truffle
├- public # static content of website
├- src #

├- components # React components that are used in views
├- contracts # copy of ./contracts (for import in web app)
├- css # style sheets
├- heartbeatOracle # Node.js-based Oracle to send heartbeats to Blockchain
├- layout # contains views for react web app
└- utils # contains utilities for support (e.g., web3js, test data)

├- test # contains tests for distributed application
├- README.md # this file
├- package.json # required for npm
├- truffle-config.js # Truffle configuration file for Windows
└- truffle.js # Truffle configuration file