ghost-node/scripts/two-node-local-net.sh

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#!/usr/bin/env bash
# Run two node local net.
# Unlike the docker-compose script in the /docker folder, this version builds
# the nodes based on the current state of the code, instead of depending in a
# published version.
set -e
# chainspec defaults to ghost-local if no arguments are passed to this script;
# if arguments are passed in, the first is the chainspec
chainspec="${1:-ghost-local}"
# PROJECT_ROOT=$(git rev-parse --show-toplevel)
source "$(dirname "$0")"/common.sh
# cd "$PROJECT_ROOT"
last_modified_rust_file=$(
find . -path ./target -prune -o -type f -name '*.rs' -printf '%T@ %p\n' |
sort -nr |
head -1 |
cut -d' ' -f2-
)
ghost="target/release/ghost"
# ensure the ghost binary exists and is up to date
if [ ! -x "$ghost" ] || [ "$ghost" -ot "$last_modified_rust_file" ]; then
# cargo build --release
echo "[+] Build needed"
fi
# setup variables
node_offset=0
declare -a node_pids
declare -a node_pipes
# create a sed expression which injects the node name and stream type into
# each line
function make_sed_expr() {
name="$1"
type="$2"
printf "s/^/%8s %s: /" "$name" "$type"
}
# turn a string into a flag
function flagify() {
printf -- '--%s' "$(tr '[:upper:]' '[:lower:]' <<< "$1")"
}
# start a node and label its output
#
# this function takes a single argument, the node name.
# the name must be one of those which can be passed to the ghost binary, in
# un-flagged form, one of:
# alice, bob, charlie, dave, eve, ferdie, one, two
function run_node() {
name="$1"
# create a named pipe so we can get the node's PID while also sedding
# its output
local stdout
local stderr
stdout=$(mktemp --dry-run --tmpdir)
stderr=$(mktemp --dry-run --tmpdir)
mkfifo "$stdout"
mkfifo "$stderr"
node_pipes+=("$stdout")
node_pipes+=("$stderr")
# compute ports from offset
local port=$((30333+node_offset))
local rpc_port=$((9933+node_offset))
local ws_port=$((9944+node_offset))
node_offset=$((node_offset+1))
echo "$(flagify "$name")"
echo "--node-key 000000000000000000000000000000000000000000000000000000000000000${node_offset}"
# start the node
# "$ghost" \
# --chain "$chainspec" \
# --tmp \
# --port "$port" \
# --rpc-port "$rpc_port" \
# --rpc-cors all \
# --node-key 0000000000000000000000000000000000000000000000000000000000000001 \
# "$(flagify "$name")" \
# > "$stdout" \
# 2> "$stderr" \
# &
# local pid=$!
# node_pids+=("$pid")
#
# # send output from the stdout pipe to stdout, prepending the node name
# sed -e "$(make_sed_expr "$name" "OUT")" "$stdout" >&1 &
# # send output from the stderr pipe to stderr, prepending the none name
# sed -e "$(make_sed_expr "$name" "ERR")" "$stderr" >&2 &
}
# clean up the nodes when the script exits
function finish {
for node_pid in "${node_pids[@]}"; do
kill -9 "$node_pid"
done
for node_pipe in "${node_pipes[@]}"; do
rm "$node_pipe"
done
}
trap finish EXIT
# start the nodes
run_node Alice
run_node Bob
# now wait; this will exit on its own only if both subprocess exit
# the practical implication, as both subprocesses are supposed to run
# forever, is that this script will also run forever, until killed, ath which
# point the exit trap should kill the subprocesses
wait