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Local development

Running against a Local Node

If you want to develop against the Boson protocol smart contracts, you will need to deploy contracts to a local node that you can execute transactions against with scripts or a locally served instance of your dapp.

Prerequisites

To follow the manual and to get your local environment running you'll need to have the following tools installed:

  • Git
  • Node v16.14.x
  • NPM v8.4.x

Clone the repo

Start by cloning this repository.

git clone git@github.com:bosonprotocol/boson-protocol-contracts.git

Install required Node modules

All NPM resources are project local. No global installs required.

cd boson-protocol-contracts
npm install

Configure Environment

  • Copy .env.example to .env and edit to suit.
  • For local development, only the values in section # Local node env specific are important
    • DEPLOYER_LOCAL_TXNODE is the URL of locally run node. In this example we will be using hardhat node, which has the default URL endpoint http://127.0.0.1:8545. If you are using default configuration, you can leave DEPLOYER_LOCAL_TXNODE empty. If you are using hardhat (or any other) node with custom configuration, you need to specify its endpoint here.
    • DEPLOYER_LOCAL_KEY: If you are using hardhat node as in this example, it will use the mnemonic defined in DEPLOYER_HARDHAT_MNEMONIC and ignore the value of DEPLOYER_LOCAL_KEY However, if you are using custom node with different key management, you need to provide the private key of the account that will be deploying the contracts. It is necessary that the corresponding address has high enough balance to execute the transactions on your custom node.
    • ADMIN_ADDRESS_LOCAL: Boson protocol implements role based access management. Admin is the most important role since it can manage other roles and perform virtually all protocol management, including approving dispute resolvers. Admin is set during the deployment process, so you need to provide the address that will be granted this role.
    • AUTH_TOKEN_OWNERS_LOCAL: Boson protocol allows sellers to authenticate with an ENS name or LENS profile if they have one. Both are represented by NFTs. To simulate this, we prepared a script that deploys mock ENS and LENS NFT contracts on the local node and issues the ENS and LENS NFT authentication tokens to the addresses specified in AUTH_TOKEN_OWNERS_LOCAL. You can specify multiple addresses, separated with ", " (comma and space).
  • All other values can be kept as they are, since they are needed only for deploying to other networks.

Configure Protocol Parameters

Boson protocol has variety of different parameters, for protocol fees to various limits. They are initially set during the deployment, but they can be later changed by the admin. For testing purposes, default values are generally okay to work with. However, if you'd like to adjust them before the deployment, edit configuration file scripts/config/protocol-parameters.js with desired values.

Start the local node

To run the local node, execute the command in a separate terminal.

npx hardhat node

This will start the node and output all the actions that are happening on it (e.g. incoming trasactions or other calls). At the begining it outputs 20 addresses with initial balance of 10000 ETH. You can use any of this addreses as the admin account of the protocol (refer to the explanation of ADMIN_ADDRESS_LOCAL in section Configure Environment).

Deploy authentication token contract mocks

Boson protocol currently uses two NFT contracts (ENS and LENS), that can be optionally used as the authentication mechanism for seller. On public networks, these contracts are already deployed and you would just use their actual addresses. However, on the test network you need to deploy it yourself to enable full protocol functionality.

The script that deploys the authentication token mock contract also mints the authentication tokens to the addresses specified in .env. (refer to the explanation of AUTH_TOKEN_OWNERS_LOCAL in section Configure Environment. These cannot be zero addresses, so you need to populate it with your values or supply an empty value if you don't want authentication tokens to be minted to any addresses.

To deploy the authentication token mocks, then run

npm run deploy-mocks:local

This script outputs the addresses of the deployed mock NFT contracts. Save them, as you will need them for the deployment of the protocol contracts.

NOTE: if you do not plan to use this authentication at all you can skip the deployment of the mocks. However, since the deployment of the protocol contract needs the addresses of ENS and LENS to be non-zero value, you'd still need to provide some address in configuration file scripts/config/auth-token-addresses.js.

Deploy the protocol contracts

Before the deployment, you need to configure the addresses of authentication token contracts that you deployed in previous step. Edit the file scripts/config/auth-token-addresses.js and replace the values for LENS.localhost and ENS.localhost. If you don't do it, the deployment will still succeed, however you won't be able to use the tokens as authentication mechanism out of the box.

To deploy the whole suite of the Boson protocol contract, execute

npm run deploy-suite:local

This deploys all contract on the local node and prints out all the information about the deployment. Besides that, ABIs of the contracts are generated and all contract addresses are stored so you can later use them if needed. You will find them in folders:

  • artifacts/contracts/interfaces
  • addresses/31337-localhost.json

[Optional] Manage roles

If you want to perform any of the following:

  • change any of protocol configuration parameters
  • use dispute resolver, which needs to be activated by the admin
  • set up other roles, needed for some functionalities of the protocol (e.g. PAUSE, FEE_COLLECTOR)

you need to set up the admin account. To do it

  • specify admin's address in the .env file (refer to the explanation of ADMIN_ADDRESS_LOCAL in section Configure Environment))
  • optionally, edit scripts/config/role-assignments.js. The defaults will suffice for enabling the above-mentioned functionality.
  • run npm run manage-roles:local. This grants the ADMIN and UPGRADER roles to the admin address specified in .env and the PROTOCOL role to the ProtocolDiamond contract The output of this command is saved to logs/localhost.manage.roles.txt

To get the examples how to use the admin to perform actions, refer to unit test in files:

  • test/protocol/ConfigHandlerTest.js
  • test/protocol/DisputeResolverHandlerTest.js
  • PAUSER role: test/protocol/PauseHandlerTest.js
  • FEE_COLLECTOR role: test/protocol/FundsHandlerTest.js

Using the protocol

You can find the examples how to use all functions of the protocol in our test files in folder test/protocol.

Using other npm scripts

We provide some scripts to perform other tasks in this repo (e.g. just building the contracts, testing, sizing etc.). You can find more info about it on separate page Tasks.