Property Registration

Smart Contract Solution Document

Author: Saikumar K

Document contains step by step guide to user who would like to understand different methods available implemented in the smart contracts and execute to understand the output.

  Introduction There are two smart contracts, 1) for User and 2) Registrar. NodeJS is used to write these smart contracts.

Pre-requisites These smart contracts were developed using the VM provided by Upgrad which contains necessary software for deploying and executing smart contracts.

Users • Seller – Saikumar1, [email protected], 1234123412341231 • Buyer – Saikumar2, [email protected], 1234123412341232

Step 1: Bootstrap the network Command

1. Go to the ‘network’ folder of the project
2. Execute the command ./fabricNetwork.sh up, which will prompt for the confirmation to boot the network. Enter ‘Y’ in the terminal to bring up the network. Terminal Screenshot:

Step 2: Chaincode Installation and Instantiation Command:

1. Once Step1 is complete, execute below command which will install & instantiate the smart contracts in chaincode container and allow us to invoke different methods listed below.
2. ./fabricNetwork.sh install Terminal

  Step 3: Start the chaincode node application This is a must have step before proceeding to Step 4 Command:

1. Enter into docker container for chaincode using command docker exec -it chaincode /bin/bash
2. Install node modules using ‘npm install’ command which will install all necessary Node modules inside chaincode container.
3. Start the node application: npm run start-dev Terminal:

  Step 4: Invoke Smart Contract Methods Method 1: requestNewUser Commands:

1. Enter into Peer0 of users org: docker exec -it peer0.users.property-registration-network.com /bin/bash
2. Execute command: peer chaincode invoke -o orderer.property-registration-network.com:7050 -C registrationchannel -n regnet -c'{"Args":["org.property-registration-network.regnet.users:requestNewUser","Saikumar1","[email protected]","1234567890","1234123412341231"]}' Terminal:

  Method 2: approveNewUser Commands:

1. Enter into Peer0 of registrar org: docker exec -it peer0.registrar.property-registration-network.com /bin/bash
2. Execute command: peer chaincode invoke -o orderer.property-registration-network.com:7050 -C registrationchannel -n regnet -c'{"Args":["org.property-registration-network.regnet.registrar:approveNewUser","Saikumar1","1234123412341231"]}' Terminal:

  Method 3: rechargeAccount Commands:

1. Enter into Peer0 of users org: docker exec -it peer0.users.property-registration-network.com /bin/bash
2. Execute command: a. Success: peer chaincode invoke -o orderer.property-registration-network.com:7050 -C registrationchannel -n regnet -c'{"Args":["org.property-registration-network.regnet.users:rechargeAccount","Saikumar1","1234123412341231","upg500"]}' b. Failure: peer chaincode invoke -o orderer.property-registration-network.com:7050 -C registrationchannel -n regnet -c'{"Args":["org.property-registration-network.regnet.users:rechargeAccount","Saikumar1","1234123412341231","upgr500"]}' Terminal for Success & Failure:

  Method 4: viewUser Commands for Users Org:

1. Enter into Peer0 of users org: docker exec -it peer0.users.property-registration-network.com /bin/bash
2. Execute command: peer chaincode invoke -o orderer.property-registration-network.com:7050 -C registrationchannel -n regnet -c'{"Args":["org.property-registration-network.regnet.users:viewUser","Saikumar1","1234123412341231"]}' Commands for Registrar Org:
3. Enter into Peer0 of registrar org: docker exec -it peer0.registrar.property-registration-network.com /bin/bash
4. Execute command: peer chaincode invoke -o orderer.property-registration-network.com:7050 -C registrationchannel -n regnet -c'{"Args":["org.property-registration-network.regnet.registrar:viewUser","Saikumar1","1234123412341231"]}'   Terminal for User:

Terminal for Registrar:

  Method 5: propertyRegistrationRequest Commands:

1. Enter into Peer0 of users org: docker exec -it peer0.users.property-registration-network.com /bin/bash
2. Execute command: peer chaincode invoke -o orderer.property-registration-network.com:7050 -C registrationchannel -n regnet -c'{"Args":["org.property-registration-network.regnet.users:propertyRegistrationRequest","001","200","Saikumar1","1234123412341231"]}' Terminal:

  Method 6: approvePropertyRegistration Commands:

1. Enter into Peer0 of registrar org: docker exec -it peer0.registrar.property-registration-network.com /bin/bash
2. Execute command: peer chaincode invoke -o orderer.property-registration-network.com:7050 -C registrationchannel -n regnet -c'{"Args":["org.property-registration-network.regnet.registrar:approvePropertyRegistration","001"]}' Terminal:

  Method 7: viewProperty Commands for Users Org:

1. Enter into Peer0 of users org: docker exec -it peer0.users.property-registration-network.com /bin/bash
2. Execute command: peer chaincode invoke -o orderer.property-registration-network.com:7050 -C registrationchannel -n regnet -c'{"Args":["org.property-registration-network.regnet.users:viewProperty","001"]}' Commands for Registrar Org:
3. Enter into Peer0 of registrar org: docker exec -it peer0.registrar.property-registration-network.com /bin/bash
4. Execute command: peer chaincode invoke -o orderer.property-registration-network.com:7050 -C registrationchannel -n regnet -c'{"Args":["org.property-registration-network.regnet.registrar:viewProperty","001"]}'   Terminal for Users:

Terminal for Registrar:

  Method 8: updateProperty Commands:

1. Enter into Peer0 of users org: docker exec -it peer0.users.property-registration-network.com /bin/bash
2. Execute command: peer chaincode invoke -o orderer.property-registration-network.com:7050 -C registrationchannel -n regnet -c'{"Args":["org.property-registration-network.regnet.users:updateProperty","001","Saikumar1","1234123412341231","onSale"]}' Terminal:

  Method 9: purchaseProperty Pre-requisite: In order to purchase property, we need to register new user as mentioned below before proceeding with purchase of the property. Steps to register new user (Saikumar2) in the network and request property purchase

1. requestNewUser: peer chaincode invoke -o orderer.property-registration-network.com:7050 -C registrationchannel -n regnet -c'{"Args":["org.property-registration-network.regnet.users:requestNewUser","Saikumar2","[email protected]","1234567892","1234123412341232"]}'

2. approveNewUser: peer chaincode invoke -o orderer.property-registration-network.com:7050 -C registrationchannel -n regnet -c'{"Args":["org.property-registration-network.regnet.registrar:approveNewUser","Saikumar2","1234123412341232"]}'

3. rechargeAccount: peer chaincode invoke -o orderer.property-registration-network.com:7050 -C registrationchannel -n regnet -c'{"Args":["org.property-registration-network.regnet.users:rechargeAccount","Saikumar2","1234123412341232","upg500"]}'

4. purchaseProperty: peer chaincode invoke -o orderer.property-registration-network.com:7050 -C registrationchannel -n regnet -c'{"Args":["org.property-registration-network.regnet.users:purchaseProperty","001","Saikumar2","1234123412341232"]}'