Setting Up the Hyperledger Network

Generate cryto material for different organizations

Configuration is defined in crypto-config.yaml present in property-network folder

Note: There must me a bin folder in the root directory which is platform dependent refer to hyperledger documentation to know how to generate that.

cd property-network
../bin/cryptogen generate --config crypto-config.yaml 

Generate channel artifacts and genesis block

channel configuration is defined in the file configtx.yaml which is present in property-network directory. Let's first generate our genesis block

../bin/configtxgen -profile FourOrgsOrdererGenesis -outputBlock ./channel-artifacts/genesis.block

Now we will generate channel block for all our channels namely

• bank
• gda
• advocate
• builder

export CHANNEL_NAME=gda  
../bin/configtxgen -profile FourOrgsChannel -outputCreateChannelTx ./channel-artifacts/$CHANNEL_NAME.tx -channelID $CHANNEL_NAME

export CHANNEL_NAME=advocate  
../bin/configtxgen -profile FourOrgsChannel -outputCreateChannelTx ./channel-artifacts/$CHANNEL_NAME.tx -channelID $CHANNEL_NAME

export CHANNEL_NAME=bank  
../bin/configtxgen -profile FourOrgsChannel -outputCreateChannelTx ./channel-artifacts/$CHANNEL_NAME.tx -channelID $CHANNEL_NAME

export CHANNEL_NAME=builder  
../bin/configtxgen -profile FourOrgsChannel -outputCreateChannelTx ./channel-artifacts/$CHANNEL_NAME.tx -channelID $CHANNEL_NAME

Getting the network up

After everything setup we will get the network up with the following command

docker-compose -f docker-compose-cli.yaml up -d

The configuration of network is defined in docker-compose-cli file

Now Let's join the nodes to channels

We have defined a cli node into our channel in which all the tools are preinstalled so we will access other nodes through this node so let's get inside our cli node first

docker exec -e COLUMNS="`tput cols`" -e LINES="`tput lines`" -ti cli bash

After that to execute a command on a particular node we have to set the enviroment variables for that node so before running commands here are the list of enviroment variables for our nodes

GDA

CORE_PEER_ADDRESS=peer0.gda.example.com:7051
CORE_PEER_LOCALMSPID="gda"
CORE_PEER_TLS_ROOTCERT_FILE=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/gda.example.com/peers/peer0.gda.example.com/tls/ca.crt
CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/gda.example.com/users/[email protected]/msp 
export CHANNEL_NAME=gda

Builder

CORE_PEER_ADDRESS=peer0.builder.example.com:7051
CORE_PEER_LOCALMSPID="builder"
CORE_PEER_TLS_ROOTCERT_FILE=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/builder.example.com/peers/peer0.builder.example.com/tls/ca.crt
CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/builder.example.com/users/[email protected]/msp 
export CHANNEL_NAME=builder

Advocate

CORE_PEER_ADDRESS=peer0.advocate.example.com:7051
CORE_PEER_LOCALMSPID="advocate"
CORE_PEER_TLS_ROOTCERT_FILE=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/advocate.example.com/peers/peer0.advocate.example.com/tls/ca.crt
CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/advocate.example.com/users/[email protected]/msp 
export CHANNEL_NAME=advocate

Bank

CORE_PEER_ADDRESS=peer0.bank.example.com:7051
CORE_PEER_LOCALMSPID="bank"
CORE_PEER_TLS_ROOTCERT_FILE=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/bank.example.com/peers/peer0.bank.example.com/tls/ca.crt
CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/bank.example.com/users/[email protected]/msp 
export CHANNEL_NAME=bank

Now let's get into the builder node first and then create the channel block

peer channel create -o orderer.example.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/$CHANNEL_NAME.tx 

This will produce a channel block just keep this block safe it will be needed if any other node will need to join the channel

peer channel join -b $CHANNEL_NAME.block

Now install the builder chaincode into this node

 peer chaincode install -n builder -v 1.0 -p github.com/chaincode/property

Now instantiate the installed chaincode

peer chaincode instantiate -o orderer.example.com:7050 -n builder -v 1.0 -c '{"Args":["init"]}' -C $CHANNEL_NAME

Now let's get into the Advocate node first and then create the channel block

peer channel create -o orderer.example.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/$CHANNEL_NAME.tx 

This will produce a channel block just keep this block safe it will be needed if any other node will need to join the channel

peer channel join -b $CHANNEL_NAME.block

Now install the builder chaincode into this node

 peer chaincode install -n advocate -v 1.0 -p github.com/chaincode/advocate

Now instantiate the installed chaincode

peer chaincode instantiate -o orderer.example.com:7050 -n advocate -v 1.0 -c '{"Args":["init"]}' -C $CHANNEL_NAME

Now let's get into the Bank node first and then create the channel block

peer channel create -o orderer.example.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/$CHANNEL_NAME.tx 

This will produce a channel block just keep this block safe it will be needed if any other node will need to join the channel

peer channel join -b $CHANNEL_NAME.block

Now install the builder chaincode into this node

 peer chaincode install -n bank -v 1.0 -p github.com/chaincode/bank

Now instantiate the installed chaincode

peer chaincode instantiate -o orderer.example.com:7050 -n bank -v 1.0 -c '{"Args":["init"]}' -C $CHANNEL_NAME

Now let's get into the GDA node first and then create the channel block

peer channel create -o orderer.example.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/$CHANNEL_NAME.tx 

This will produce a channel block just keep this block safe it will be needed if any other node will need to join the channel

peer channel join -b $CHANNEL_NAME.block

Now install the builder chaincode into this node

 peer chaincode install -n gda -v 1.0 -p github.com/chaincode/gda

Now instantiate the installed chaincode

peer chaincode instantiate -o orderer.example.com:7050 -n gda -v 1.0 -c '{"Args":["init"]}' -C $CHANNEL_NAME

Additional steps for GDA node

We want GDA to join all the channels so that it can monitor all organizations involved in the transaction let's set the gda enviroment variables and let it join the channel

joining all the channels

peer channel join -b gda.block
peer channel join -b builder.block
peer channel join -b advocate.block
peer channel join -b bank.block

Now hyperldger also needs chaincode to be installed in all nodes which are part of same channel so let's install all the chaincodes in gda as well

Installing chaincode

peer chaincode install -n builder -v 1.0 -p github.com/chaincode/property
peer chaincode install -n bank -v 1.0 -p github.com/chaincode/bank
peer chaincode install -n advocate -v 1.0 -p github.com/chaincode/advocate

note: we do not need to instantiate the chaincode on this node as they are already instantiated on other nodes.

so with this we are finished with our network setup

Generating keystore artifacts for organizations

we have to generate the artifacts so that node js can can access our network basically if we have CA in our node js we can skip this section and directly obtain the certificate from our CA but we don't currently have CA in our network -

so have created a node js script which can be used to convert cryptogen generated certificate into node js format the script is named as sample js you have to copy the public and private certificate from the cryto-config directory for the respective peer organization and edit the sample.js accordingly i'm not explaining this section in detail because its a temporary workaround in future we will be having a CA .

Now Let's get our Api server up

• Go to Express-api directory and use the followring command

• npm install

• node start  

This will bring our api server up

Now let's get our Angular ui up

• Go to angular-ui directory

• npm install

• ng serve --open