#!/usr/bin/env bash
# Start a real RabbitMQ broker with no Docker and no root.
#
# RabbitMQ is an Erlang application, so it needs an Erlang runtime and epmd on the path - that
# is the whole dependency. Point ERL_ROOT at an Erlang installation and RABBITMQ_HOME at an
# unpacked rabbitmq-server-generic-unix tarball, and it starts in about fifteen seconds.
#
# If you have Docker, use Testcontainers instead: see src/test/java/.../TestcontainersConfiguration.java
set -eu
: "${ERL_ROOT:?set ERL_ROOT to an Erlang installation directory}"
: "${RABBITMQ_HOME:?set RABBITMQ_HOME to an unpacked rabbitmq-server-generic-unix directory}"

export PATH="$ERL_ROOT/bin:$ERL_ROOT/erts-"*/bin":$PATH"
export RABBITMQ_MNESIA_BASE="${RABBITMQ_MNESIA_BASE:-/tmp/rmq/data}"
export RABBITMQ_LOG_BASE="${RABBITMQ_LOG_BASE:-/tmp/rmq/log}"
export RABBITMQ_NODENAME="${RABBITMQ_NODENAME:-rabbit@localhost}"
export HOME="${HOME:-/tmp/rmq}"
mkdir -p "$RABBITMQ_MNESIA_BASE" "$RABBITMQ_LOG_BASE"

epmd -daemon 2>/dev/null || true
sleep 1
setsid nohup "$RABBITMQ_HOME/sbin/rabbitmq-server" > /tmp/rmq/boot.log 2>&1 < /dev/null &
for _ in $(seq 1 60); do
  if (echo > /dev/tcp/127.0.0.1/5672) 2>/dev/null; then echo "broker ready on 5672"; exit 0; fi
  sleep 1
done
echo "broker did not start; see /tmp/rmq/boot.log" >&2
exit 1