RACK App on Gentoo

conf.d.sh

rc_ulimit="-n 65535"
rc_need="nginx"

RACK_DIR="/var/lib/rack/versions/current"
RACK_BUNDLE_EXEC="/usr/local/bin/bundle"
RACK_RB="/var/lib/rack/versions/current/config/unicorn.rb"

init.d.sh

#!/sbin/runscript
# Copyright 1999-2014 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

description="A RACK daemon"

RACK_ENVIRONMENT="${RACK_ENVIRONMENT:-production}"
RACK_USER="${RACK_USER:-rack}"
RACK_GROUP="${RACK_GROUP:-rack}"
RACK_NAME="${SVCNAME##*.}"
if [ -n "${RACK_NAME}" -a "${SVCNAME}" != "rack" ]; then
  description="${description} for ${RACK_NAME}"
  RACK_PID_FILE="/var/run/rack.${RACK_NAME}.pid"
  RACK_RB_DEFAULT="/etc/rack/${RACK_NAME}.rb"
else
  RACK_PID_FILE="/var/run/rack.pid"
  RACK_RB_DEFAULT="/etc/rack/unicorn.rb"
fi
RACK_DIR="${RACK_DIR:-/var/lib/rack}"
RACK_RB="${RACK_RB:-${RACK_RB_DEFAULT}}"
RACK_WORKER_PROCESSES="${RACK_WORKER_PROCESSES:-4}"
RACK_BUNDLE_EXEC="${RACK_BUNDLE_EXEC:-/usr/local/bin/bundle}"
LD_PRELOAD_OPTS=""
if [ -f "/usr/lib64/libjemalloc.so" ]; then
  LD_PRELOAD_OPTS="/usr/lib64/libjemalloc.so"
fi

depend() {
  need net
}

start() {
  ebegin "Starting ${SVCNAME}"
  start-stop-daemon \
    --start \
    --chdir "${RACK_DIR}" \
    --user "${RACK_USER}" \
    --background \
    --make-pidfile --pidfile "${RACK_PID_FILE}" \
    --env PATH="${PATH}:$(dirname ${RACK_BUNDLE_EXEC})" \
    --env LD_PRELOAD="${LD_PRELOAD_OPTS}" \
    --env RACK_PID_FILE="${RACK_PID_FILE}" \
    --exec "${RACK_BUNDLE_EXEC}" \
    -- exec unicorn_rails -c "${RACK_RB}" -E "${RACK_ENVIRONMENT}"
  eend $?
}

stop() {
  ebegin "Stopping ${SVCNAME}"
  start-stop-daemon --stop --pidfile "${RACK_PID_FILE}"
  eend $?
}

# groupadd -r sinatra
# useradd -r -m -d /var/lib/sinatra -g sinatra sinatra