eth-private-net

#!/bin/bash

IDENTITIES=(alice bob lily)
FLAGS='--networkid=8888 --preload=identities.js'
DEV_FLAGS='--nodiscover --verbosity=4'

BASE_PORT=40300
BASE_RPC_PORT=8100

SCRIPT=$(basename "$0")

USAGE="Name:
    $SCRIPT - Command line utility for creating and running a three node Ethereum private net

    Network comes with three identities at the following addresses:

        alice: 0xdda6ef2ff259928c561b2d30f0cad2c2736ce8b6 (initialized with 1 Ether)
        bob:   0x8691bf25ce4a56b15c1f99c944dc948269031801 (initialized with 1 Ether)
        lily:  0xb1b6a66a410edc72473d92decb3772bad863e243

Usage:
    $SCRIPT command [command options]

Commands:
    init       Initialize private network from genesis block in genesis.json
    clean      Destroy all blockchain history, resetting to pristine state
    start      Start a running ethereum node on the network (example: 'start alice')
    connect    Connect two running nodes as peers (example: 'connect alice bob')
    help       Print this help message

Author:
    Vincent Chu (@vincentchu), Initialized Capital
    https://github.com/vincentchu/eth-private-net
"

function exec_on_node() {
  geth --exec="$2" attach ./$1/geth.ipc
}

CMD=$1
case $CMD in
  init)
    for IDENTITY in ${IDENTITIES[@]}; do
      echo "Initializing genesis block for $IDENTITY"
      geth --datadir=./$IDENTITY $FLAGS init genesis.json
    done
    ;;

  clean)
    for IDENTITY in ${IDENTITIES[@]}; do
      echo "Cleaning geth/ directory from $IDENTITY"
      rm -r ./$IDENTITY/geth
    done
    ;;

  start)
    IDENTITY=$2
    if [ -z $IDENTITY ]
    then
      echo "No identity specified. Identity must be one of: ${IDENTITIES[*]}"
      exit -1
    fi

    case $IDENTITY in
      alice)
        OFFSET=1
        ;;

      bob)
        OFFSET=2
        ;;

      lily)
        OFFSET=3
        ;;
    esac

    PORT=$((BASE_PORT + OFFSET))
    RPC_PORT=$((BASE_RPC_PORT + OFFSET))

    echo "Starting node for $IDENTITY on port: $PORT, RPC port: $RPC_PORT. Console logs sent to ./$IDENTITY/console.log"
    geth --datadir=./$IDENTITY --port=$PORT --rpcport=$RPC_PORT $FLAGS $DEV_FLAGS console 2>> ./$IDENTITY/console.log
    ;;

  connect)
    IDENTITY1=$2
    IDENTITY2=$3

    ENODE=$(exec_on_node $IDENTITY1 'admin.nodeInfo.enode')
    CONNECT_JS="admin.addPeer($ENODE)"

    exec_on_node $IDENTITY2 $CONNECT_JS
    ;;

  help)
    echo "$USAGE"
    ;;

  *)
    echo "Command '$CMD' not recognized!"
    echo "$USAGE"
    exit -1
  ;;
esac