Masters Thesis in Informatics

Trusted Data Aggregation in Distributed Ledger Technology

Setup

Prerequisites

• NodeJS
• Docker

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Ganache Docker

1. Download image

# docker pull trufflesuite/ganache-cli

2. Run image with mnemonic

# docker run --detach --publish 8545:8545 trufflesuite ganache-cli:latest -l 10000000 --quiet --accounts 20 --networkId 5711 --db /home/db --acctKeys /home/accounts --mnemonic "<your mnemonic phrase>"

example mnemonic: "mimic dune forward party defy island absorb insane deputy obvious brother immense"

3. Copy accounts from docker container to data folder

# docker cp <container hash>:/home/accounts data/ && mv data/accounts data/accounts.json

Ganache will be available under ws://0.0.0.0:8545

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MongoDB Docker

1. Download image

# docker pull mongo:4.0-xenial

2. Run docker container with mongodb replica

# docker run --name mongo -d mongo:4.0-xenial --replSet rs0

3. Log into docker container

# docker exec -it <container hash> bash

4. Open mongo shell in container

# mongo

5. Initialize replica

> rs.initiate()

6. Exit mongo shell. Get the IP address of the docker container

# docker inspect <container hash> | grep IPAddress

7. Open servers/demo/env.js and update variable dbUri with the IPAddress

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Configuring the Project

Current project uses the network interface wlp2s0, adjust interface name in files servers/demo/init.js, servers/demo/examples/fail.js and servers/demo/examples/util.js if necessary.

1. Get the network IP-address

# ifconfig

2. Change the IPs of environment variables (.env) in front-ends

REACT_APP_WEB3=ws://192.168.178.24:8545
REACT_APP_BROKER=http://192.168.178.24:8787

Running the Project (in local network)

1. Install packages. Run install.sh script in root folder

# ./install.sh

2. Compile and deploy smart contracts in /dlt folder

# truffle migrate

3. Start Servers in /servers folder

# npm start

4. Start Front-ends in /front-ends folder

# npm start

5. Run init.sh script

# node servers/demo/init.js