The current mono-repo is a simple project to showcase the ease and power of Convector by creating a basic Drug Supply Chain fullstack application example.

Some of the challenges on the field are:

• Public health risks due to counterfeit or diluted drugs.
• Complex value chains.
• Speed.
• Global distribution and manufacturing.

A somewhat typical value chain in this industry looks like:

Took from: http://www.rmtminc.com/page/product-solutions/supply-chain-integrity.html

A few high level reasons on why Blockchain may help here, are the following (for a real application, further analysis is required):

• Who keeps the data?
• How to certify each participant's information.
• How to assure integrity and durability of the data.
• How to make it cost-effective.
• Public health data should be public?

The end result:

• You get a drug at the hospital or any drug store and are able to trace it back through the whole value chain. Sort of like tokenizing the drugs through a value chain.

• Lerna
• Docker

• NodeJS
  • Convector

• NodeJS
  • ExpressJS
  • Convector

• Angular 7
  • Vanilla CSS
  • Convector
  • Mobx

npm i
node ./update-paths.js

Wake up the environment and install the components.

# Start the development blockchain and install chaincodes
# *An expected error will be shown* since the script will try to make a first call
# to start the chaincode containers.
npm run start

# Seed some participants in the Blockchain
npm run seed

Run the project (Servers will auto-enroll with the participant chaincode).

# Start the server
npx lerna run start:dev --scope @worldsibu/convector-example-dsc-server --stream
# Start the ui project
npx lerna run start --scope @worldsibu/convector-example-dsc-ui --stream

Go to localhost:4200 and use the application!

Access the CouchDB here: http://localhost:5084/_utils/#database/ch1_drug/_all_docs

To have multiple users registered in the network you need to start the server with each user (certificate/wallet) that will be available with these example scripts 👇

A new server will start but it will use a different identity to communicate with the blockchain network. Beware that the server always talks with 10010 port therefore the same front end will be used but it will call a different instance of the server source code.

The options available are:

[
  {
    "certId": "user1",
    "certOrg": "org1",
    "id": "aa001"
  },
  {
    "certId": "user2",
    "certOrg": "org1",
    "id": "aa002"
  },
  {
    "certId": "user3",
    "certOrg": "org1",
    "id": "aa003"
  },
  {
    "certId": "user1",
    "certOrg": "org2",
    "id": "aa004"
  },
  {
    "certId": "user2",
    "certOrg": "org2",
    "id": "aa005"
  },
  {
    "certId": "user3",
    "certOrg": "org2",
    "id": "aa006"
  },
]

Run the server:

# Stop the current server and run
# Start the server as the second user "aa002"
IDENTITY=aa002 npx lerna run start:dev --scope @worldsibu/convector-example-dsc-server --stream

# Stop the current server and run
# Start the server as the second user "aa003"
IDENTITY=aa003 npx lerna run start:dev --scope @worldsibu/convector-example-dsc-server --stream

• When you create a drug, the owner will be set to the current identity of the server.
• If you transfer a drug you won't be able to transfer it again with the same identity (as it will change ownership).
• When a transfer happens, the target's transport needs to be associated to the target identity of the transfer (or it will throw an error).

1. Do docker ps in your terminal.
2. Find the container named docker logs -f dev-peer0.org2.hurley.lab-drug-1.0 (or if you upgraded the version at the end may vary).