farm-chain POC with Fabric v1.4

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Setting up Hyperledger Fabric and Dependencies

Remove any pre-existing containers and images:

$ docker rm -f $(docker -q)
$ docker rmi -f $(docker ps -aq)

If you have not used docker previously on the same machine follow the step 1.

1. Docker - Guide (https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-on-ubuntu-18-04)
2. NodeJS - Guide (https://www.digitalocean.com/community/tutorials/how-to-install-node-js-on-ubuntu-18-04)
3. Hyperledger Fabric v1.4 and above

Setup Golang language:

curl -O https://storage.googleapis.com/golang/go1.11.1.linux-amd64.tar.gz
sha256sum go1.11.1.linux-amd64.tar.gz
tar -xvf go1.11.1.linux-amd64.tar.gz
sudo mv go /usr/local

Add the following paths to the bashrc file

export GOPATH=$HOME/go
export PATH=$PATH:/usr/local/go/bin:$GOPATH/bin

Re-source the bash script

source ~/.bashrc
source ~/.bashrc

Get fabric-samples and install

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

From the root level of the fabric-samples directory:

$ ./scripts/bootstrap.h 

Start the Hyperledger Fabric network for the POC

From the root level of this project

$ ./startFabric.sh >&logs/startup_logs.txt

On first run of the project: install the required node js libraries, register the Admin and User components of our network, and start the server:

$ npm install

If this throws some errors, try running $ npm update and then $npm install

Enroll the admin user:

$ node enrollAdmin.js 

Expected output:

Store path:/home/sakya/.hfc-key-store
Successfully loaded admin from persistence
Assigned the admin user to the fabric client ::{"name":"admin","mspid":"Org1MSP","roles":null,"affiliation":"","enrollmentSecret":"","enrollment":{"signingIdentity":"091d15d647a3053a769faf8f4122e7ac577323b919d00413d6f4e2208337eee9","identity":{"certificate":"-----BEGIN CERTIFICATE-----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\nWCE/AiBdDgWhzztwAtdsV7/y6NXkmvCcJQvgtmz/ga+7gcolIQ==\n-----END CERTIFICATE-----\n"}}}

Enroll the normal user:

$ node enrollUser.js  

If you received the following error: Failed to register: Error: fabric-ca request register failed with errors [[{"code":20,"message":"Authentication failure"}]]

remove the keys from hfc-key-store: rm -rf ~/.hfc-key-store/* After this, re-enroll the admin and normal user. Successful completion of $node enrollUser.js should give the following output:

Successfully loaded admin from persistence
Successfully registered user1 - secret:MPGQrXnJyxjc
Successfully enrolled member user "user1" 
User1 was successfully registered and enrolled and is ready to intreact with the fabric network

Start the server and browse to localhost:8000 in order to interact with the POC network and ledger

$ node server.js >&logs/server_logs.txt

NOTE: All console logs will be stored in the ``logs`` directory. 

Transaction flow in the network

Stakeholders in the network

1. Farmer -> invokes - recordProduce()
2. Buyer -> invokes - queryProduce() / changeProduceOwner()
3. Regulator -> invokes - queryProduce() / queryAllProduce()