@hyperledger/cactus-plugin-htlc-coordinator-besu N

`@hyperledger/cactus-plugin-htlc-coordinator-besu`

Allows Cactus nodes to interact beetwen diferent networks. Using this we can perform:

Instantiate an existing HTLC plugin, also the own HTLC and the counterparty HTLC.
Interact with the HTLC, deploying, checking and withdrawing the funds.

Summary

Usage

To use this import public-api and create new *PluginFactoryHTLCCoordinatorBesu. Then use it to create a HTLC Coordinator.

    const factoryHTLC = new PluginFactoryHTLCCoordinatorBesu({
        pluginImportType: PluginImportType.Local,
    });
    const pluginHTLCCoordinatorBesu = await factoryHTLC.create(pluginOptions);

You can make calls through the htlc coordinator to the plugin API:

async ownHTLC(ownHTLCRequest: OwnHTLCRequest): Promise<InvokeContractV1Response>; 
async counterpartyHTLC(counterpartyHTLCRequest: CounterpartyHTLCRequest): Promise<InvokeContractV1Response>;
async withdrawCounterparty(withdrawCounterpartyRequest: WithdrawCounterpartyRequest): Promise<InvokeContractV1Response>;

Call example to create an ownHTLC and instantiate a HTLC contract:

    const ownHTLCRequest: OwnHTLCRequest = {
        htlcPackage: HtlcPackage.BesuErc20,
        connectorInstanceId,
        keychainId,
        constructorArgs: [],
        web3SigningCredential,
        inputAmount: 10,
        outputAmount: 1,
        expiration,
        hashLock,
        tokenAddress,
        receiver,
        outputNetwork: "BTC",
        outputAddress: "1AcVYm7M3kkJQH28FXAvyBFQzFRL6xPKu8",
        gas: estimatedGas,
    };
    const response = await coordinator.ownCoordinator(ownHTLCRequest);
});

The field "htlcPackage" can have the following values:

    enum HtlcPackage {
        Besu = 'BESU',
        BesuErc20 = 'BESU_ERC20'
    }

Development

Getting Started

Clone the git repository on your local machine. Follow these instructions that will get you a copy of the project up and running on your local machine for development and testing purposes.

Prerequisites

In the root of the project to install the dependencies execute the command:

yarn run configure

Compiling

In the project root folder, run this command to compile the plugin and create the dist directory:

yarn run watch

Flow

Alice flow

The Alice diagram shows the sequence diagram of a complete flow for a participant who wants exchange funds with another participant. She doesn't start the withdraw flow becuase she doesn't know the secret to withdraw them.

Bob flow

The next Bob diagram shows the sequence diagram of a complete flow for a participant who wants exchange funds with another participant, but he knows the secret and starts the flow to withdraw the funds.