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Chopsticks

Create parallel reality of your Substrate network.

Quick Start

Fork Acala mainnet: npx @acala-network/chopsticks@latest --endpoint=wss://acala-rpc-2.aca-api.network/ws

It is recommended to use config file. You can check configs for examples.

Run node using config file

# npx @acala-network/chopsticks@latest --config= url | path | config_file_name
# i.e: using configs/acala.yml

npx @acala-network/chopsticks@latest -c acala

Environment Variables

  • PORT: Set port for Chopsticks to listen on, default is 8000
  • LOG_LEVEL: Set log level, default is info. Available options: trace, debug, info, warn, error
  • VERBOSE_LOG: If set, do not truncating log messages

Example configs can be found here

Install

Make sure you have setup Rust environment (>= 1.64).

  • Clone repository with submodules (smoldot)
    • git clone --recurse-submodules https://github.com/AcalaNetwork/chopsticks.git && cd chopsticks
  • Install deps
    • yarn
  • Build wasm. Please do not use IDE's built-in tools to build wasm.
    • yarn build-wasm

Run

  • Replay latest block
    • npx @acala-network/chopsticks@latest run-block --endpoint=wss://acala-rpc-2.aca-api.network/ws
    • This will replay the last block and print out the changed storages
    • Use option -b|--block to replay certain block hash
    • Use option --output-path=<file_path> to print out JSON file
    • Use option --html to generate storage diff preview (add --open to automatically open file)

Dry-run

  • Dry run hep:
npx @acala-network/chopsticks@latest dry-run --help
  • Dry run extrinsic, same as run-block, example:
npx @acala-network/chopsticks@latest dry-run --config=configs/mandala.yml --html --open --extrinsic=0x39028400d43593c715fdd31c61141abd04a99fd6822c8558854ccde39a5684e7a56da27d01183abac17ff331f8b65dbeddd27f014dedd892020cfdc6c40b574f6930f8cf391bde95997ae2edc5b1192a4036ea97804956c4b5497175c8d68b630301685889450200000a00008eaf04151687736326c9fea17e25fc5287613693c912909cb226aa4794f26a480284d717
  • Dry run call, make sure mock-signature-host: true to fake caller's signature:
npx @acala-network/chopsticks@latest dry-run --config=configs/mandala.yml --html --open --extrinsic=0xff00000080969800 --address=5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY --at=<block_hash_optional>
  • Dry run a preimage:
npx @acala-network/chopsticks@latest dry-run --endpoint=wss://rpc.polkadot.io --preimage=<preimage> --open
  • Dry run a preimage and execute an extrinsic after that:
npx @acala-network/chopsticks@latest dry-run --endpoint=wss://rpc.polkadot.io --preimage=<preimage> --extrinsic=<extrinsic> --open
  • Dry run a preimage and execute a call after that, make sure mock-signature-host: true to fake caller's signature:
npx @acala-network/chopsticks@latest dry-run --config=configs/mandala.yml --preimage=<preimage> --extrinsic=<call> --address=<who> --open
  • Run a test node

    • npx @acala-network/chopsticks@latest --endpoint=wss://acala-rpc-2.aca-api.network/ws
    • You have a test node running at ws://localhost:8000
    • You can use Polkadot.js Apps to connect to this node
    • Submit any transaction to produce a new block in the in parallel reality
    • (Optional) Pre-define/override storage using option -s|--import-storage=storage.[json/yaml]. See example storage below.
    {
      "Sudo": {
        "Key": "5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY"
      },
      "TechnicalCommittee": {
        "Members": ["5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY"]
      },
      "Tokens": {
        "Accounts": [
          [
            ["5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY", { "token": "KAR" }],
            {
              "free": 1000000000000000,
            }
          ]
        ]
      }
    }
  • Run Kusama fork

    • Edit configs/kusama.yml if needed. (e.g. update the block number)
    • npx @acala-network/chopsticks@latest --config=configs/kusama.yml
  • Setup XCM multichain NOTE: You can also connect multiple parachains without a relaychain

npx @acala-network/chopsticks@latest xcm -r kusama -p karura -p statemine

Proxy

Chopsticks respect http_proxy and https_proxy environment variables. Export ROARR_LOG=true environment variable to enable log printing to stdout. To learn more, see https://www.npmjs.com/package/global-agent?activeTab=readme

Documentation

External documentation on Chopsticks can be found at the following links: