/Hyperledger-Fabric

Primary LanguageShell

Hyperledger Fabric Test Network

N.B: Contents in this repository have been gained or taken from hyperledger fabric official documentation

Configuaration of Test-Net

  • It includes two peer organizations and an ordering organization.
  • For simplicity, a single node Raft ordering service is configured.
  • To reduce complexity, a TLS Certificate Authority (CA) is not deployed. All certificates are issued by the root CAs.
  • The sample network deploys a Fabric network with Docker Compose. Because the nodes are isolated within a Docker Compose network, the test network is not configured to connect to other running Fabric nodes.

Bring up the test network

Script - network.sh , PWD - fabric-samples/test-network

  • Up the test net using the command ./network.sh up
  • Down the test net using the command ./network.sh down

Key Notes

  • The network.sh script creates all of the cryptographic material that is required to deploy and operate the network before it creates the peer and ordering nodes.

  • By default, the script uses the cryptogen tool to create the certificates and keys. The tool is provided for development and testing.

  • For Production, its better to bring up the network using CA(Certificate authority)

Create a Channel

command - ./network.sh createChannel -c <Channel_Name>

  • Replace <Channel_Name> with the channel name.
  • Channel Name contains only lower case ASCII alphanumerics, dots ‘.’, and dashes ‘-‘
  • Channel Name is shorter than 250 characters
  • Channel Name starts with a letter

Start a ChainCode on the channel

command - ./network.sh deployCC -c <Channel_Name> -ccn <Chaincode_Name> -ccp <Chaincode_Path> -ccl <Chaincode_Language>

Interacting with the network

  • Make sure you're in fabric-samples/test-network directory

    Run these command for running the CLI as peer of org1

  • export PATH=${PWD}/../bin:$PATH (Redirecting to binaries folder of test-network)

  • export FABRIC_CFG_PATH=$PWD/../config/ (Use for configuring peer of org)

Make Peer CLI for org1

Environment Variables for org1

  • export CORE_PEER_TLS_ENABLED=true
  • export CORE_PEER_LOCALMSPID="Org1MSP"
  • export CORE_PEER_TLS_ROOTCERT_FILE=${PWD}/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt
  • export CORE_PEER_MSPCONFIGPATH=${PWD}/organizations/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp
  • export CORE_PEER_ADDRESS=localhost:7051

Make Peer CLI for org2

Environment Variables for org2

  • export CORE_PEER_TLS_ENABLED=true
  • export CORE_PEER_LOCALMSPID="Org2MSP"
  • export CORE_PEER_TLS_ROOTCERT_FILE=${PWD}/organizations/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt
  • export CORE_PEER_MSPCONFIGPATH=${PWD}/organizations/peerOrganizations/org2.example.com/users/Admin@org2.example.com/msp
  • export CORE_PEER_ADDRESS=localhost:9051

Initialize ledger

Here, peer0 of org1 initialize the ledger with initledger function decribed in asset-transfer-basic/chaincode/javasrcipt/lib/assetTransfer.js file

Initialize Chaincode

  • peer chaincode invoke -o localhost:7050 --ordererTLSHostnameOverride orderer.example.com --tls --cafile "${PWD}/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem" -C <Channel_Name> -n <Chaincode_Name> --peerAddresses localhost:7051 --tlsRootCertFiles "${PWD}/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt" --peerAddresses localhost:9051 --tlsRootCertFiles "${PWD}/organizations/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt" -c '{"function":"InitLedger","Args":[]}'

Get all the asset

  • peer chaincode query -C <Channel_Name> -n <Chaincode_Name> -c '{"Args":["GetAllAssets"]}'

Transfer Ownership of an asset

  • peer chaincode invoke -o localhost:7050 --ordererTLSHostnameOverride orderer.example.com --tls --cafile "${PWD}/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem" -C <Channel_Name> -n <Chaincode_Name> --peerAddresses localhost:7051 --tlsRootCertFiles "${PWD}/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt" --peerAddresses localhost:9051 --tlsRootCertFiles "${PWD}/organizations/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt" -c '{"function":"TransferAsset","Args":["asset6","Christopher"]}'

Read Data of an specific asset

  • peer chaincode query -C <Channel_Name> -n <Chaincode_Name> -c '{"Args":["ReadAsset","asset6"]}'