PART of a Online Course:

Mastering Fabric Chaincode Development using GoLang

Checkout : http://bcmentors.com/courses

HLFGO-Token

Multiple versions of the chaincode

Cloning

Clone it under gocc/src/token git clone https://github.com/acloudfan/HLFGO-Token.git token

Versions

Setting up the environment

. set-env.sh acme OR > . set-env.sh budget set-chain-env.sh -l golang -p token/v1 -n token -v 1.0 -c '{"Args":["init"]}' -C airlinechannel

{v1} Both query & invoke execute the invoke function in chaincode

set-chain-env.sh -q '{"Args":["get"]}' set-chain-env.sh -i '{"Args":["set"]}'

{v2} Using the Logger API to log messages

{v3} Getting the information in chaincode

• Transaction ID
• Timestamp
• Channel ID

{v4} Getting the arguments in a chaincode

set-chain-env.sh -q '{"Args":["FunctionName","Arg-1", "Arg-2"]}' chain.sh query

{v5} Shows the use of GetState | PutState | DelState

set-chain-env.sh -q '{"Args":["get"]}' set-chain-env.sh -i '{"Args":["set"]}' set-chain-env.sh -i '{"Args":["delete"]}'

Shows the use of EP

{v6} Shows the use of InvokeFunction

{v7} #Not needed-Solution to the exercise. Create a new function - call it AddState Solution for v7 - management of multiple tokens

{v8} Shows the use of events

{v9}

ERC20

. set-env.sh acme OR > . set-env.sh budget

Init

export CONSTRUCTOR='{"Args":["init","ACFT","A Cloud Fan Token!!!","raj"]}'

set-chain-env.sh -l golang -p token/ERC20 -n erc20 -v 1.0 -c '{"Args":["init","ACFT","1000","A Cloud Fan Token!!!","raj"]}' -C airlinechannel

set-chain-env.sh -c '$CONSTRUCTOR'

set-chain-env.sh -c '{"Args":["init","100","ACFT","A Cloud Fan Token!!!","raj"]}'

Queries

set-chain-env.sh -q '{"Args":["totalSupply"]}' set-chain-env.sh -q '{"Args":["balanceOf","sam"]}'

Invoke

set-chain-env.sh -i '{"Args":["transfer","raj","sam","100"]}' set-chain-env.sh -i '{"Args":["transfer","sam","peter","50"]}'

Links to Bookmark

• Interfaces https://github.com/hyperledger/fabric/blob/release-1.3/protos/peer/proposal.pb.go
• Peer Proto Definition https://godoc.org/github.com/hyperledger/fabric/protos/peer
• Common Proto Definitions https://godoc.org/github.com/hyperledger/fabric/protos/common