fabric tendermint cross demo

This is an example application for an atomic swap through Cross-chain transaction using Cross Framework between Hyperledger Fabric and Tendermint.

As Atomic commit protocol, Simple commit protocol is used.

Requirements

• Go 1.16+
• Docker
• jq

Install required tools

The below command installs Relayer, Fabric tools, Fabric CLI, Tendermint CLI

# install fabric tools and build Fabric/Tendermint CLI, Relayer
make -C demo build -j5

Chains

Chain	Node	Role	Application
Tendermint	1 Node	Coordinator/Participant	ERC-20 based on CDT Module
Fabric	1 Orderer, 3 Peers	Participant	ERC-20 based on CDT Module

• Refer to CDT

Directory structure

• cmds
  • alpha ... Tendermint CLI
  • beta ... Fabric CLI
• contracts
  • erc20 ... contract modules for Tendermint/Fabric
• demo ... demo environment including
  • chains
    • fabric ... fabric-related files including docker-compose.yaml for network
      • chaincode
        • fabibc ... fabric chaincode application
    • tendermint ... tendermint simapp working as CLI and tendermint application including docker-compose.yaml for network
  • configs ... config files for alpha cli, beta cli, fabric app, relayer
  • scripts ... shell scripts for alpha cli, beta cli, relayer, scenario
• relayer ... Relayer CLI

How tools work

• Relayer
  • relaying packets between different chains
• Fabric tools
  • genesis block generation
  • configuration of a channel
  • cryptographic generation
  • deployment of chaincode
• Fabric CLI
  • creating tx, submitting tx, querying tx on Fabric node
• Tendermint CLI
  • creating tx, submitting tx, querying tx on Tendermint node

Startup fabric and tendermint network

# prepare fabric network and tendermint network using docker containers
make -C demo network

Testing the demo

# initialize relayer, fabric CLI, tendermint CLI, and run handshake for IBC between fabric and tendermint by creating transactions.
make -C demo run-init
# run ./scripts/scenario/sample-scenario. See the `About sample-scenario` section for more detail.
make -C demo run

End network

# down related containers, remove volumes
make -C demo network-down
# remove any generated data
make -C demo clean

Restart network if needed

make -C demo network-down
make -C demo clean
make -C demo network

About sample-scenario

See About sample-scenario

READMEs

Additional information can be found below.

• Alpha CLI for Tendermint
• Beta CLI for Fabric
• ERC20 Contract
• Demo
• Fabric
• Fabibc Application
• Tendermint Application