Hildr

Hildr is an OP Stack rollup client written in the Java 20 with GraalVM native.

Follow the spec

• Rust
• Go

Build

Prerequisites

• Install GraalVM latest version

Build jar

./gradlew build

Build native

# use graalvm native plugin
./gradlew nativeCompile

# use native-image directly
./gradlew buildBinary

# build static binary
./gradlew buildBinaryStatic

Javadoc

For the latest javadocs for the main branch, run ./gradlew javadoc and open the document under the hildr-node/build/docs/javadoc/index.html in your browser.

Testing

./gradlew test

Running

Next copy .env.default to .env

cd docker/
cp .env.default .env

In the .env file, modify the L1_RPC_URL field to contain a valid Ethereum RPC. For the Optimism and Base testnets, this must be a Goerli RPC URL. This RPC can either be from a local node, or a provider such as Alchemy or Infura.

By default, the NETWORK field in .env is optimism-goerli, however base-goerli is also supported.

Start the docker containers

docker compose up -d

The docker setup contains a Grafana dashboard. To view sync progress, you can check the dashboard at http://localhost:3000 with the username hildr and password passw0rd. Alternatively, you can view Hildr's logs by running docker logs hildr-node --follow.

Contribution

To help hildr grow, follow Contributing to hildr.