Godwoken Examples

This demo shows of how to use Godwoken.

The demo provides the following functionalities:

• Deposit from a MetaMask powered address into Godwoken.
• Deploy an Ethereum Smart Contract to Polyjuice running on Godwoken, we use SimpleStorage.
• Submit a polyjuice transaction to set the value in SimpleStorage smart contract.
• Execute (but do not submit) a transaction to fetch the current stored value in SimpleStorage smart contract.
• Query the balance of a Godwoken account.
• Make transfers between Godwoken accounts.
• Withdraw from Godwoken back to a layer 1 CKB address.

Install dependencies

yarn run bootstrap

Update Demo Configs

Firstly copy config files.

cp <your godwoken `scripts-deploy-result.json`> packages/demo/src/configs/scripts-deploy-result.json
cp <your godwoken `config.toml`> packages/demo/src/configs/godwoken-config.json (convert config.toml to json format)
cp packages/demo/src/configs/config.json.sample packages/demo/src/configs/config.json
# then update `config.json` with your own config.

Deposit By CLI

Deposit CLI both support testnet and dev chain.

Build typescripts

yarn workspace @godwoken-examples/godwoken tsc 
yarn workspace @godwoken-examples/demo clean-cli && yarn workspace @godwoken-examples/demo build-cli

Deposit

Run deposit.js --help to see how to use this command.

LUMOS_CONFIG_FILE=<your lumos config json file> node ./packages/demo/build-cli/cli/deposit.js --help

Or Deposit SUDT

LUMOS_CONFIG_FILE=<your lumos config json file> node ./packages/demo/build-cli/cli/deposit_sudt.js --help

Deposit By Demo Page

Deposit and Deposit SUDT module only support testnet, other parts support both testnet and dev chain

Build typescripts

yarn workspace @godwoken-examples/godwoken tsc
yarn workspace @godwoken-examples/demo clean && yarn workspace @godwoken-examples/demo build

Start Server

yarn workspace @godwoken-examples/demo start

Open in browser

Open http://localhost:9000/html/index.html

Godwoken utils

Unlock Withdrawal

Run godwoken-cli.js --help to see how to use this command.

yarn workspace @godwoken-examples/godwoken tsc 
yarn workspace @godwoken-examples/tools tsc 

LUMOS_CONFIG_FILE=<your lumos config json file> node ./packages/tools/lib/godwoken-cli.js unlockWithdraw --help

Polyjuice

Create Creator account

Build typescripts

yarn workspace @godwoken-examples/godwoken tsc 
yarn workspace @godwoken-examples/polyjuice tsc 
yarn workspace @godwoken-examples/tools tsc 

Create creator account for polyjuice

Create account id for create polyjuice contract account (the creator_account_id config)

$ node packages/tools/lib/polyjuice-cli.js createCreatorAccount <from_id> <sudt_id> <rollup_type_hash> <privkey>

You can see <rollup_type_hash> when godwoken started.

<sudt_id> given 1 is for CKB Token.

<privkey> is a 0x prefixed hex string.

<from_id> is your user account, you can get the account id by:

$ node packages/tools/lib/godwoken-cli.js getAccountIdByScriptHash <script_hash>

You can get the script hash when deposition finished.

Update creator account config

polyjuice-cli.js createCreatorAccount will return an creator_account_id and write this to packages/demo/src/configs/config.json creator_account_ids.

And recompile demo

yarn workspace @godwoken-examples/demo clean && yarn workspace @godwoken-examples/demo build

Deploy an Ethereum contract

Also supported by Demo Page.

$ node packages/tools/lib/polyjuice-cli.js deploy <creator_account_id> <init_code> <rollup_type_hash> <privkey>

This will output the account id.

The <init_code> sample, please see SimpleStorage.bin .

Call an ethereum contract

Also supported by Demo Page.

$ node packages/tools/lib/polyjuice-cli.js call <to_id> <input_data> <rollup_type_hash> <privkey>

<to_id> is the account created in deploy step.

The <input_data> is generated by ethabi , please see SimpleStorage.calls.md .