kfsoftware/hlf-cc-nodejs-template

HLF node chaincode template

Start tunnel

ngrok tcp 9999

Install, approve and commit chaincode

CHAINCODE_NAME=template_node
API_URL="http://localhost:8080/graphql"
SIGNATURE_POLICY="OR('Org1MSP.member', 'Org2MSP.member')"
CHAINCODE_ADDRESS_TUNNEL="4.tcp.eu.ngrok.io:13438" # the forwarding URL you get from opening an ngrok tunnel
# localChaincode port must be the same as the port you use to connect for ngrok
hlf-cc-dev start --localChaincode="localhost:9999" \
  --chaincodeAddress="${CHAINCODE_ADDRESS_TUNNEL}" \
  --chaincode="${CHAINCODE_NAME}" \
  --signaturePolicy="${SIGNATURE_POLICY}" \
  --env-file="${PWD}/.env" \
  --apiUrl="${API_URL}"

Start chaincode

npm i # install dependencies
npm run build:w # in another terminal
npm run start:dev

You can also use any IDE like vscode or WebStorm to debug the chaincode.

Every time you start the tunnel, you must restart the chaincode as the certificates and package id will change.

Test chaincode

You can go to the playground(instead of /graphql, use /playground) and use the following mutation and query to test the chaincode:

mutation invoke {
  invokeChaincode(input:{
    chaincodeName:"template_node"
    function: "InitLedger"
    args: []
    transientMap: []
  }){
    response
    transactionID
    chaincodeStatus
  }
}

mutation query {
  queryChaincode(input:{
    chaincodeName:"template_node"
    function: "GetAllAssets"
    args: []
    transientMap: []
  }){
    response
    chaincodeStatus
  }
}