EigenLayer Sidecar

The EigenLayer Sidecar is an open source, permissionless, verified indexer enabling anyone (AVS, operator, etc) to access EigenLayer’s protocol rewards in real-time.

A core responsibility of the Sidecar is facilitating the calculations of rewards distributed to stakers and operators by AVSs.

Helpful Links

• Rewards overview
• RewardsCoordinator contract technical documentation
• EigenLayer Rewards Calculation Process

Development

Dependencies

• Go 1.22
• PostgreSQL >= 15.x
• Homebrew (if on MacOS)

Supported build environments

• MacOS
• Linux (Ubuntu/Debian)

Environment setup

If you have basic build tools like make already installed, you can run:

make deps

If you are starting from a fresh linux install with nothing, run:

./scripts/installDeps.sh

make deps

Testing

First run:

make build

This will build everything you need, including the sqlite extensions if they have not yet been built.

Entire suite

make test

One off tests

goTest.sh is a convenience script that sets up all relevant environment variables and runs the tests.

./scripts/goTest.sh -v ./internal/types/numbers -v -p 1 -run '^Test_Numbers$' 

Long-running Rewards tests

The rewards tests are time and resource intensive and are not enabled to run by default.

Download the test data

./scripts/downloadTestData.sh testnet-reduced

Run the rewards tests

REWARDS_TEST_CONTEXT=testnet-reduced TEST_REWARDS=true ./scripts/goTest.sh -timeout 0 ./pkg/rewards -v -p 1 -run '^Test_Rewards$'

Options:

• REWARDS_TEST_CONTEXT determines which test data to use.
• TEST_REWARDS enables the rewards tests.

Build

This will build the go binary and the associated sqlite3 extensions:

make deps

make build

Running

Commands

Available Commands:
  completion  Generate the autocompletion script for the specified shell
  help        Help about any command
  run         Run the sidecar

run options

Run the sidecar

Usage:
  sidecar run [flags]

Flags:
  -h, --help   help for run

Global Flags:
  -c, --chain string               The chain to use (mainnet, holesky, preprod (default "mainnet")
      --database.db_name string    Defaults to 'sidecar' (default "sidecar")
      --database.host string       Defaults to 'localhost'. Set to something else if you are running PostgreSQL on your own (default "localhost")
      --database.password string   
      --database.port int          Defaults to '5432' (default 5432)
      --database.user string       Defaults to 'sidecar' (default "sidecar")
      --debug                      "true" or "false"
      --ethereum.rpc-url string    e.g. "http://34.229.43.36:8545"
      --ethereum.ws-url string     e.g. "ws://34.229.43.36:8546"
      --rpc.grpc-port int          e.g. 7100 (default 7100)
      --rpc.http-port int          e.g. 7101 (default 7101)
      --statsd.url string          e.g. "localhost:8125"

Bring Your Own PostgreSQL database

See PostgreSQL Setup for instructions on setting up a PostgreSQL database.

Directly using Go

Assumes you have PosgresSQL running locally already

make build
./bin/sidecar run \
    --ethereum.rpc-url="http://34.229.43.36:8545" \
    --chain="holesky" \
    --statsd.url="localhost:8125" \
    --database.host="localhost" \
    --database.port="5432" \
    --database.user="sidecar" \
    --database.password="..." \
    --database.db_name="sidecar"

# OR with go run
go run main.go run \
    --ethereum.rpc-url="http://34.229.43.36:8545" \
    --chain="holesky" \
    --statsd.url="localhost:8125" \
    --database.host="localhost" \
    --database.port="5432" \
    --database.user="sidecar" \
    --database.password="..." \
    --database.db_name="sidecar"

Using the public Docker container

Assumes you have PosgresSQL running locally already

docker run -it --rm \
  -e SIDECAR_DEBUG=false \
  -e SIDECAR_ETHEREUM_RPC_URL="http://34.229.43.36:8545" \
  -e SIDECAR_CHAIN="holesky" \
  -e SIDECAR_STATSD_URL="localhost:8125" \
  -e SIDECAR_DATABASE_HOST="localhost" \
  -e SIDECAR_DATABASE_PORT="5432" \
  -e SIDECAR_DATABASE_USER="sidecar" \
  -e SIDECAR_DATABASE_PASSWORD="..." \
  -e SIDECAR_DATABASE_DB_NAME="sidecar" \
  --tty -i \
  public.ecr.aws/z6g0f8n7/go-sidecar:latest run

Build and run a container locally

Assumes you have PosgresSQL running locally already

make docker-buildx-self

docker run \
  -e "SIDECAR_DEBUG=false" \
  -e "SIDECAR_ETHEREUM_RPC_URL=http://34.229.43.36:8545" \
  -e "SIDECAR_CHAIN=holesky" \
  -e "SIDECAR_STATSD_URL=localhost:8125" \
  -e SIDECAR_DATABASE_HOST="localhost" \
  -e SIDECAR_DATABASE_PORT="5432" \
  -e SIDECAR_DATABASE_USER="sidecar" \
  -e SIDECAR_DATABASE_PASSWORD="..." \
  -e SIDECAR_DATABASE_DB_NAME="sidecar" \
  --tty -i \
  go-sidecar:latest run

Running with docker-compose

By default, this will build the sidecar locally with Docker and run it.

If you wish to use the pre-built image, uncomment the image property in the sidecar service in docker-compose.yml and remove the build section

services:
  sidecar:
    image: public.ecr.aws/z6g0f8n7/sidecar:latest run
    #build:
    #  context: .
    #  dockerfile: Dockerfile

POSTGRES_DATA_PATH=<path to store postgres data> docker-compose up

RPC Routes

Get current block height

grpcurl -plaintext -d '{}'  localhost:7100 eigenlayer.sidecar.api.v1.Rpc/GetBlockHeight

Get the stateroot at a block height

grpcurl -plaintext -d '{ "blockNumber": 1140438 }'  localhost:7100 eigenlayer.sidecar.api.v1.Rpc/GetStateRoot