Install/Configure and run a demo app on HLF

Install HLF 1.3/1.4 on Ubuntu 16.0.4/18.0.4

curl -sSL http://bit.ly/2ysbOFE | bash -s <fabric> <fabric-ca> <thirdparty>
curl -sSL http://bit.ly/2ysbOFE | bash -s 1.3.0 1.3.0 0.4.13
curl -sSL http://bit.ly/2ysbOFE | bash -s 1.4.0-rc2 1.4.0-rc2 0.4.14

Links

• Fabric Master
• Fabric Repo
• Bal Transfer
• Commercial Paper Tutorial
• Edx Repo
• yeasy Repo
• More Readme
• IBM - Blockchain on Kubernetes
• Blockchain
• AWS Template

This is a sample app on HLF to store property records

You will be provisioning a local network with the following docker container configuration:

• 1 CA
• A SOLO orderer
• 1 Org (1 Peer per Org)

Artifacts

• Crypto material has been generated using the cryptogen tool from Hyperledger Fabric and mounted to all peers, the orderering node and CA containers. More details regarding the cryptogen tool are available here.
• An Orderer genesis block (genesis.block) and channel configuration transaction (mychannel.tx) has been pre generated using the configtxgen tool from Hyperledger Fabric and placed within the artifacts folder. More details regarding the configtxgen tool are available here.

This example makes use of configtxgen and is for development ONLY. Make use of Fabric-CA for production environments

cd /usr/local/hyperledger/fabric-samples/basic-network
cd /usr/local/hyperledger/fabric-samples/demo-app

Setup:

• Build Your First Network

• Define/Change crypto-config.yaml

  • Make sure you set EnableNodeOUs: true

• Network Topology

  • OrdererOrgs
    • Name
    • Domain
    • Hostname
  • PeerOrgs
    • Name
  • Domain Users
    • Count 1 in addition to Admin

• Define/Change docker-compose.yml

  • FABRIC_CA_SERVER_CA_KEYFILE

• Define/Change ./generate.sh (Based on Profiles defined in configtx.yaml)

• Define/Change ./start.sh (Change channel name)

• Run startFabric.sh, and replace the new key by inspecting docker logs ca.example.com

  • Everytime you generate new crypto material, make sure you update "FABRIC_CA_SERVER_CA_KEYFILE" in the "docker-compose.yml" file

• Bring up the n/w by running startFabric.sh

  • launch network; create channel and join peer to channel
  • launch CLI container in order to install, instantiate chaincode
  • bootstrap/ledger with property

• Install node

npm install

• Enroll Admin and Register the User
  • node registerAdmin.js
  • node registerUser.js
• Start server
  • node server.js http://localhost:8000
• Project Fauxton
  • Couchdb - http://localhost:5984/_utils (replace 5984 based on docker-compose.yml file)
• Enter the CLI container

  docker exec -it cli bash
  

• Query History for a Property

  peer chaincode query -C ppchannel -n demo-app -c '{"Args":["getHistoryForProperty", "2"]}'
  

• Rich Query Support (CouchDB)

  peer chaincode query -C ppchannel -n demo-app -c '{"Args":["queryPropertyByHolder", "Vettel"]}'
  

• Delete State

  peer chaincode invoke -C ppchannel -n demo-app -c '{"Args":["delete","1"]}'
  

To Do/Findings:

• Investigate the certificates generated by cryptogen using openssl x509 -in ./path/to/cert.pem -text -noout
• msp/config.yaml should NOT be placed into both the orderer and peers' MSP directory. It must ONLY go into the peers
• REST APIs - HLF Fabric SDK for node.js
  • Channel
    • queryByChaincode
    • queryBlock
    • queryBlockByHash
    • queryTransaction
    • queryInfo
  • Client
    • queryInstalledChaincodes
    • queryChannels

Clean the network

Clean the containers and artifacts

--Docker Housekeeping
docker rm -f $(docker ps -aq)
--docker rmi -f $(docker images -q)

--remove chaincode images from prior runs
docker rmi -f $(docker images | grep peer[0-9]-peer[0-9] | awk '{print $3}')

--Clear any cached networks
docker network prune

--Clear out your previous key value stores that may have cached user enrollment certificates
rm -rf /tmp/hfc-*
rm -rf ~/.hfc-key-store)

--Delete docker log files
find /var/lib/docker/containers/ -type f -name "*.log" -delete

Discover IP Address

To retrieve the IP Address for one of your network entities, issue the following command:

# this will return the IP Address for peer0
docker inspect peer0 | grep IPAddress

Fabric Examples

• Commercial Paper
• Interest Rate Swaps

git clone --branch master https://github.com/hyperledger/fabric-samples