README
¶
About Project
This is sample Hyperledger Fabric blockahain Application. Which contains two organizations as
- Doctor
- Generalpublic(Patient)
This will be containing the project upto building a frontend using ReactJs and Nodejs.
Getting Start
Clone this repository by Issuing following command In terminal
git clone https://github.com/Tharinducs/Hyperledger_Fabric_Sample.git
Creating channel artifacts and crypto-materials
Then go inside Hyperledger_Fabric_Sample folder
cd Hyperledger_Fabric_Sample
Open this folder in your text editor I prefer #Visual Studio code.
Then open a terminal inside Hyperledger_Fabric_Sample/pmschainsolo.
Then create two folders inside pmschainsolo folder as following
- channel-artifacts
- crypto-config
Then Run generate.sh file using this command.
./generate.sh
Now You will have all the binaries inside channel-artifacts and cryto-config folders.
If you need to increse the ammount of organizations you have to edit the crypto-config.yaml, configtx.yaml file according to your requirements.If you increse the ammout of organizations you have to change generate.sh file accordingly.I will have some articles on Medium how we can do this and complete explanation about commands in generate.sh file.You can follow me on Medium to get in touch with those. Tharindu Sandaruwan
Creting the network
For that open this file pmschainsolo/docker-compose-cli.yaml.
Then edit folowing areas.
- FABRIC_CA_SERVER_TLS_KEYFILE=/etc/hyperledger/fabric-ca-server-config/ce9da2b3c37d18b04361afdfb2f65dd892157cdabacd4fb86dc7dd0cd488fa98_sk
command: sh -c 'fabric-ca-server start --ca.certfile /etc/hyperledger/fabric-ca-server-config/ca.generalpublic.pms.com-cert.pem --ca.keyfile /etc/hyperledger/fabric-ca-server-config/ce9da2b3c37d18b04361afdfb2f65dd892157cdabacd4fb86dc7dd0cd488fa98_sk -b admin:adminpw -d'
This file name ends with _sk should rename accroding to the genearted ca-cerver-congigurations keys generated in previous step for both organizations.
The ca-sever-config file path for both organization is here.
pmschainsolo/crypto-config/peerOrganizations/doctor.pms.com/ca/......_sk
pmschainsolo/crypto-config/peerOrganizations/generalpublic.pms.com/ca/......_sk
If you have increse the number of peers then you have to change following files accordingly.
- pmschainsolo/base/docker-compose-base.yaml
- pmschainsolo/docker-compose-cli.yaml
- pmschainsolo/docker-compose-couch.yaml
Now you setup all your configuration for your blockhain network.
Running your Network
Now run startNetwork.sh file by issuing this command on terminal.
./startNetwork.sh
If you have anything running on docker other than Hyperledger Fabric please be carefull when running this command.If somthing running remove volumes and containers only related to hyperledger fabric and remove following lines from Hyperledger Fabric
`#removing all the containers echo "" echo "##### Removing all the containers #####" echo "" echo "" docker rm -f $(docker ps -aq) echo "" echo ""
#prune the volumes echo "#### Prune the network #####" echo "" echo "" docker volume prune echo "" echo ""
#down the previously build networks echo "##### Removing networks #####" echo "" echo "" docker network prune echo "" echo ""
#down the previously build networks echo "##### Clearing the System #####" echo "" echo "" docker system prune echo "" echo ""`
After suucessfully running that file Issue commands in clicommandreference file one by one.
Now you Have run a sample network using Hyperledgr Fabric.
Now we can install chaincode. For that I will install chaincode on one of peer in each organization to do that issue commnds in the clicommandreference file inside pmschainsolo folder which comes under title of installing chaincode.
After Installing the chaincode you have to instantiate the chaincode.
To do that issue the commands in clicommandreference files which comes under title of instantiate chaincode it only should done one one peer per channel.
Now we can do transactions.
Commands are in the clicommandreference file.
Now remove all the docker containers and volumes.
Then write your own chaincode and put it into the chaincode folder.
Then start the network again.
Then install your new chaincode and instantiate it on the channel.
Do transactions through cli.
Directories