Create contract modules

This part explains how to develop Contract Module.
In the demo, ERC20 functionalities are additional. First, read about ERC20 Contract of fabric-tendermint-cross-demo.

Contract Module

In general, modules need to satisfy specific interfaces as explained by ERC20 Contract.

As Cross Framework, modules need to satisfy ContractModule interface.

type ContractModule interface {
    OnContractCall(ctx context.Context, signers []authtypes.Account, callInfo txtypes.ContractCallInfo) (*txtypes.ContractCallResult, error)
}

Implementation in demo is here.