FreeBSD startup script

Fixes bensheldon#214

lib/support/rc.d/goodjob

@@ -0,0 +1,211 @@
+#!/bin/sh
+#
+# GoodJob background runner
+# Authors: Jesper Grann Laursen <[email protected]>
+#
+# Project: https://github.com/bensheldon/good_job
+#
+# PROVIDE: goodjob
+# REQUIRE: NETWORKING SERVERS DAEMON LOGIN
+# KEYWORD: shutdown
+#
+# Requirements:
+#
+# This file should be placed to: /usr/local/etc/rc.d/goodjob
+#
+# Add the following lines to /etc/rc.conf to enable goodjob:
+#
+# Required:
+# goodjob_enable="YES"
+#
+# Optional:
+# goodjob_dir
+# goodjob_user
+# goodjob_env
+# goodjob_poll_interval
+
+. /etc/rc.subr
+
+name=goodjob
+rcvar=goodjob_enable
+extra_commands="status restart"
+
+load_rc_config $name
+
+###############################################################################
+# Set default values (overrides should be placed in /etc/rc.conf )
+###############################################################################
+
+: ${goodjob_enable:=NO}
+: ${goodjob_dir:=/opt/www/goodjob}
+: ${goodjob_user:=deployment}
+: ${goodjob_env:=production}
+: ${goodjob_poll_interval:=5}
+
+required_dirs="${goodjob_dir}"
+
+_grep=`command -v grep 2>&1 >/dev/null && command -v grep`
+_pgrep=`command -v pgrep 2>&1 >/dev/null && command -v pgrep`
+_sh=`command -v sh 2>&1 >/dev/null && command -v sh`
+_ps=`command -v ps 2>&1 >/dev/null && command -v ps`
+_wc=`command -v wc 2>&1 >/dev/null && command -v wc`
+_printf=`command -v printf 2>&1 >/dev/null && command -v printf`
+_mkdir=`command -v mkdir 2>&1 >/dev/null && command -v mkdir`
+_rm=`command -v rm 2>&1 >/dev/null && command -v rm`
+
+PID_PATH="${goodjob_dir}/tmp/pids"
+GOODJOB_PID="${PID_PATH}/${name}.pid"
+DAEMON_OPTS=" --daemonize --pidfile=${GOODJOB_PID} --poll-interval=${goodjob_poll_interval}"
+
+start_cmd="${name}_start"
+stop_cmd="${name}_stop"
+restart_cmd="${name}_restart"
+status_cmd="${name}_status"
+
+###############################################################################
+# Helper functions
+###############################################################################
+
+__pid=0
+__status=0
+
+_bundle=/usr/local/bin/bundle
+
+goodjob_find_bundler(){
+
+  # Try to check of rbenv is activated
+  __rbenv_root=$(goodjob_execute 'echo $RBENV_ROOT')
+  if [ x"${__rbenv_root}" != x ]; then
+    _bundle=${__rbenv_root}/shims/bundle
+  fi
+
+  if [ ! -f $_bundle ]; then
+    # clearing any custom path
+    __oldpath=$PATH
+    unset PATH
+    export PATH=$__path
+
+    _bundle=`command -v bundle 2>&1 >/dev/null && command -v bundle`
+    unset PATH
+    export PATH=$__oldpath
+  fi
+
+  if [ x"${_bundle}" = x ]; then
+    $_printf 'Unable to find %s command\n' 'bundle'
+    exit 1
+  fi
+}
+
+goodjob_execute(){
+  su -l ${goodjob_user} -c "cd ${goodjob_dir} && $1"
+}
+
+goodjob_execute_start() {
+  goodjob_execute "RAILS_ENV=${goodjob_env} ${_bundle} exec good_job $DAEMON_OPTS"
+}
+
+
+goodjob_check_if_root(){
+  if [ `id -u` -ne 0 ]; then
+    ${_printf} 'Must be a root user (current is %s)\n' `whoami`
+    exit 1
+  fi
+}
+
+goodjob_check_if_running(){
+
+  # checking if bundle gem is installed before doing anything
+  goodjob_find_bundler
+
+  # check if process is already running
+  if [ -f $GOODJOB_PID ]; then
+    __pid=`${_pgrep} -F $GOODJOB_PID`
+
+    if [ x"${__pid}" != x ]; then
+      __status=`${_ps} aux | ${_grep} ${__pid} | ${_grep} -v "grep" | ${_wc} -l`
+    else
+      __pid=0
+    fi
+  fi
+}
+
+###############################################################################
+# Public functions
+###############################################################################
+
+goodjob_prestart_check(){
+  goodjob_check_if_running
+
+  # if process is already running, exit with code 1
+  if [ ${__pid} -ne 0 ] && [ ${__status} -ne 0 ]; then
+    ${_printf} '%s is already running...pid is %s\n' ${name} ${__pid}
+    exit 1
+  fi
+
+  goodjob_execute "${_mkdir} -p $PID_PATH"
+
+  goodjob_check_if_root
+}
+
+goodjob_prestop_check(){
+  goodjob_check_if_running
+
+  # if process is not running, exit with code 1
+  if [ ${__pid} -eq 0 ] && [ ${__status} -eq 0 ]; then
+    ${_printf} '%s not started\n' ${name}
+    exit 1
+  fi
+
+  goodjob_check_if_root
+}
+
+goodjob_start(){
+  goodjob_prestart_check
+
+  goodjob_execute_start
+
+  if [ $? -eq 0 ]; then
+    ${_printf} '%s started\n' ${name}
+  fi
+}
+
+goodjob_stop(){
+  goodjob_prestop_check
+
+  kill -QUIT `${_pgrep} -F ${GOODJOB_PID}`
+  ${_printf} '%s stopped\n' ${name}
+}
+
+goodjob_restart(){
+  goodjob_check_if_root
+
+  ${_printf} 'Restarting %s service...\n' ${name}
+
+  goodjob_check_if_running
+
+  # check if goodjob service is running, if not then don't kill it
+  if [ ${__pid} -ne 0 ] && [ ${__status} -ne 0 ]; then
+    kill -QUIT `${_pgrep} -F ${GOODJOB_PID}`
+  fi
+  # start services normally
+  goodjob_execute_start
+  if [ $? -eq 0 ]; then
+    ${_printf} 'Service %s restarted.\n' ${name}
+  fi
+}
+
+
+goodjob_status(){
+
+  goodjob_check_if_running
+
+  # checking if goodjob is running
+  if [ ${__pid} -ne 0 ] && [ ${__status} -ne 0 ]; then
+    ${_printf} '%s service is running with pid %s\n' ${name} ${__pid}
+  else
+    ${_printf} '%s service is not running\n' ${name}
+  fi
+}
+
+PATH="${PATH}:/usr/local/bin"
+run_rc_command "$1"