stethoscope-clients

A process runner in python for Eth 2.0 clients. Designed for use with stethoscope.

Background

For both simulation and testing, it's valuable to be able to programmatically start and stop each Eth 2.0 client. This repo provides a python interface for doing just that.

To be platform independent, clients are run via Docker.

To connect with and drive clients, we use rumor, specifically the python interface.

Installation

pip install stethoscope-clients

Usage

The key methods in this library are start_instance, stop_instance, and connect_rumor. See below for a full sample usage:

import trio
from pyrum import SubprocessConn, Rumor

from sclients import start_instance, stop_instance, connect_rumor, InstanceConfig, ENR

enr_str = ...
client_config = InstanceConfig(
	client='lighthouse',
	beacon_state_path='./genesis.ssz',
	enr= ENR(
		private_key=...,
    	tcp=9001,
    	udp=9002,
	   	id='v4'
	   	ip: '127.0.0.1'
	   	enr: enr_str,
	   	attnets: ...
	  	eth2: ...
	)
)


try:
	start_instance(client_config)

	# This block will eventually be encapsulated in `connect_rumor`
	async with SubprocessConn(cmd='rumor bare') as conn:
		async with trio.open_nursery() as nursery:
       			rumor = Rumor(conn, nursery)
       			client_peer_id = await connect_rumor(rumor, enr_str)

		       	# Insert your rumor interactions with client_peer_id

       			nursery.cancel_scope.cancel()

 finally:
 	stop_instance('lighthouse')

Client progress