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Setup

  1. Clone this repository
  2. Run git submodule update --init

Everytime you need to test a change in prysm or geth, run git submodule update --remote

Running the Devnet

  1. (Optional) Run make devnet-clean to start from a clean slate
  2. Run make devnet-up
  3. Visit http://127.0.0.1:16686 to visualize beacon and validator node traces

How to run tests

For prysm + geth combination

  1. make devnet-clean to clean old containers
  2. make blobtx-test el=prysm to run the test, checkout Makefile to find other tests to run

Adding new Clients

Interop uses ethereum-genesis-generator to generate the configuration. New clients can be added by create a docker compose service running the client. Recommend taking a look at the existing docker compose services to get an idea.

The genesis-generator docker service creates the genesis configuration your client will need to run a local testnet. The configs live in the config_data volume with the following layout:

/config_data
├── cl
│   └── jwtsecret
├── custom_config_data
│   ├── besu.json
│   ├── boot_enr.txt
│   ├── boot_enr.yaml
│   ├── bootstrap_nodes.txt
│   ├── chainspec.json
│   ├── config.yaml
│   ├── deploy_block.txt
│   ├── deposit_contract.txt
│   ├── deposit_contract_block.txt
│   ├── deposit_contract_block_hash.txt
│   ├── genesis.json
│   ├── genesis.ssz
│   ├── mnemonics.yaml
│   ├── parsedBeaconState.json
│   └── tranches
│       └── tranche_0000.txt
└── el
    └── jwtsecret

The generated CL configs contain the following noteworthy settings:

  • GENESIS_TIMESTAMP: this is set to the current time
  • GENESIS_DELAY: this is set to 60 seconds, giving clients a minute to build and run their nodes before genesis begins.
  • SECONDS_PER_SLOT: set to 3 to shorten test iteration.

Bootnode service

The bootnode docker service can be used by consensus clients to bootstrap their node. The ENR of the bootnode can be found at /config_data/custom_config_data/boot_enr.yaml.

Peering a new client with devnet

Once you've configured your client for interop, you can test it by connecting it with an EL client (like geth-2), the peering it with a known working validator (ex: prysm-validator-node). For example, to peer a hypothetically added teku-node:

docker compose run genesis-generator && \
    docker compose run prysm-validator-node teku-node -d

Once EIP4844 epoch has occurred, you can try sending a blob transaction locally to confirm that the blobs are sidecar'd to the beacon chain. This can be done with the following script:

go run ./upload ./eth.png